What can be made from tires. Production of crumb rubber from tires: technologies and methods

The problem of recycling used tires is acute in many countries. In this matter, not only the environmental aspect is important, but also the economic one, because the material obtained during processing is a good raw material for the chemical industry. We will find out what processing methods are currently used in the world, how effective and safe they are.

Types of recycling of used tires can be divided into two groups:

electromechanical grinding;
processing that changes the chemical structure.

The processing of tires by these methods is different in terms of the principle of operation and the raw materials obtained. Each of them has its own advantages and disadvantages, which are worth discussing in more detail.

Mechanical shredding of tires

This method is considered relatively safe from an environmental point of view and is widely used throughout the world. Tires are subjected to the following processing:

Old tires are washed, bead rings are removed and cut into large pieces.
Raw material is cleaned from metal cord by means of magnetic separation.
The pieces are then heated (for processing at elevated temperatures) or cooled (for the cryogenic method).
Rubber is crushed by cutting, impact, explosion, compression or abrasion.
The resulting raw material is ground to obtain a crumb of the desired size.

The disadvantage of this method is the high cost of the final product, since tire grinding requires special equipment and is considered an expensive way of processing. The cost of electricity is also high - up to 1000 kWh per 1 ton of processed raw materials.

At the same time, shredding has significant advantages over chemical tire recycling methods: technical simplicity, no toxic emissions (unlike incineration or pyrolysis). Recycling rubber by grinding preserves the technological parameters of the material.

The rubber crumb obtained by grinding is widely used in industry and construction: for the manufacture of household products, additives in mortar, when laying roads.

About how tires are processed into crumb rubber and what equipment is used, the following video

Other tire shredding methods

There are other methods for shredding old tires, but for various reasons, many of them are not widely used. The most famous processing methods:

using a rotary disperser;
ozone knife method;
barodestruction method;
shock-wave grinding (explosive circular).

For a rotary disperser, the tire is crushed into small pieces. Then the rubber is compressed in the sleeve and passes through a hole with a diameter of about 1 mm. The result is a fine rubber dust with a highly developed surface that can effectively react with other components of the mixture. Such dust is used to make sorbents, new tires, roofing materials, etc.

Recycling tires using the ozone knife method includes the effect of ozone on worn rubber in a special chamber and subsequent mechanical grinding. Ozone contributes to the destruction of the rubber structure, facilitating further grinding of the tire by mechanical methods. As a result, clean crumb rubber and metal are obtained from the old tire, and there is no need for separation, since metal and rubber separate from each other when exposed to ozone.

When processing by the baro-destruction method, the tires are first cut and crushed, and then in a special chamber under the influence of high pressure and temperatures bring the rubber to fluidity, separating it from the metal cord. The result is a small rubber crumb with a granule size of about 0.8 cm.

Processing methods that change the chemical structure

Recycling car tires, which changes the structure, is also not very profitable. The rubber component disappears after processing, and the resulting product has a lower cost than in the case of mechanical processing. At the same time, the cost of the final raw material is quite high.

Among chemical methods tire recycling the most common are the following:

pyrolysis;
thermal destruction (burning);
dissolution.

Pyrolysis is called thermal decomposition, which occurs in a special chamber without air access. This method is most often used to obtain thermal energy. The processing of rubber by combustion and pyrolysis has a number of limitations, they are associated with the release of carbon dioxide and toxic substances. This method requires more attention from an environmental point of view.

When burned in cement kilns, tires replace combustible materials such as coal and fuel oil. Applies this way in the cement industry and for heat generation.

The dissolution of old tires is considered by many experts to be promising and very effective method although it has not yet been widely used. Under the action of the solvent, a raw material is obtained that can be successfully used in metallurgy and the chemical industry.

It is expected that this technology in the future will help to efficiently dispose of tires of all types and sizes.

Tire recycling in Russia and Europe

European countries boast recycling levels of old tires reaching 90%. About 20% of them are restored and reused, 40% goes to heat, and more than 30% turns into crumbs.

Unfortunately, global averages are not that high - less than 40% of tires are recycled and 60% of unrecycled rubber ends up in landfills.

Important! Every year, about 10 million tons of new waste from old car tires appear in the world, which makes the ecological situation simply catastrophic. It is very important to pay close attention to this problem and introduce recycling methods in countries where it is not developed.

In Russia, the situation is quite sad, although it is gradually improving from year to year. Now the volume of tire recycling is about 10%, and over the past few years it has grown by a quarter. Tire recycling organizations in Russia are not yet very active, in our country people are not used to investing in secondary production, recycling and recycling.

One of the additional problems is that it is more difficult to recycle domestic tires, common in Russia, Belarus and other countries of the near abroad, than European ones. Our old tires are additionally reinforced with a radial synthetic cord, and a large admixture of textiles makes it very difficult to process. As a result, the processing of domestic tires is much more expensive and more difficult than Western-made tires with an all-metal cord type.

Additional Information! The most common processing methods in Russia are crushing and pyrolysis. It should be noted that pyrolysis is prohibited in some developed countries ah because of the harmful effects on the environment. However, domestic entrepreneurs consider more expensive processing methods to be too expensive, so they are used much less frequently.

Selling tires for recycling

However, there is still reason for optimism - over the past few years, new environmentally friendly and safe complexes for the production of crumb rubber have appeared in Russia. In particular, such complexes operate in Samara, Kursk, Tver, Vyazma. A processing center was built in Primorye, many enterprises operating in this industry were helped to launch production by franchising.

Almost every major car service center in Russia accepts old tires from motorists. Often you have to pay extra for the delivery of tires, although some services accept them for free. Companies are increasingly entering into agreements with recycling companies, handing over significant volumes of old rubber for recycling.

You can hand over tires for recycling at factories and complexes that are engaged in obtaining secondary raw materials, as well as in car services. At the same time, it should be taken into account that large enterprises usually do not accept tires from the population due to the small volume of the delivered product, so citizens have to track stocks in car services in order to get rid of one or two sets of rubber.

Economy and ecology

The economic benefits of tire recycling are undeniable. In a number of countries, combustible gas that is released during the heat treatment of tires is used to heat rooms, and also generate electricity with it. Liquid pyrolysis products are used in the production of plastics, and crushed rubber particles are an excellent raw material for asphalt bitumen.

Note! The decomposition of tires in the ground continues for more than 100 years, all this time dangerous and toxic compounds, such as phenanthrene, diphenylamine and many others, are constantly washed out of old tires. All of them remain in the soil, and then are washed out by groundwater and rainfall, falling into drinking water sources and agricultural facilities.

Thus, in the coming years, tire recycling methods will improve, and rubber recycling volumes will increase. This is especially true for developed countries, where environmental issues and the recycling of materials have long been under the close attention of both the citizens themselves and the authorities.

The situation in Russia is still reminiscent of the state of affairs in African countries, but the principles of responsible consumption are gradually penetrating the consciousness of our citizens as well. In a few decades, both motorists themselves and business representatives will know exactly what and how to do with old tires in order to get the maximum benefit from them for themselves and the environment.

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It has long been known that worn-out tires that are out of service are a potential source of environmental pollution and environmental damage. Recycling tires into crumbs at home is the same popular method, along with factory ones. Rubber waste from used tires is virtually non-biodegradable, taking hundreds of years to decompose.

It should be noted that this rubber waste is a flammable material, and if a huge number of tires ignite, they can pose a threat of poisoning to everyone nearby, since rubber, when burned, releases carcinogenic toxins, such as benzpyrene. Storage in landfills leads to the reproduction of rodents and insects, which are sources of dangerous infections. To avoid the deterioration of the environmental situation in Russia and abroad, proper disposal is required, namely, waste processing. Without constant recycling, an environmental crisis could set in very soon.

Recycling

Recycling is also beneficial in economic terms. From car tires, you can get various types of valuable recyclable materials, as well as produce a huge amount of finished products. From the waste of powder rubber of a very fine fraction (about 0.2 mm), new car tires and rubber shoes are produced, this secondary resource is popular in Russia and the CIS countries.

Powder from waste of larger fractions is used in the production of composite roofing materials, rubber-bitumen mastic, waterproofing materials, and rubber coatings. Scrap metal is obtained from a metal cord, which is also used by Russian entrepreneurs. Also, textiles and rubber are obtained from tires.

Recycling at home

Especially active and advanced people have the opportunity to process rubber with their own hands. What is needed for this? Spent chambers, tires, tires and a little ingenuity. Recycling tires into crumbs at home is a rather complicated undertaking. According to their properties, cameras from old tires are more suitable. They are softer and more easily amenable to external influences.

According to one of the scenarios, the rubber should be cooled to a temperature of approximately -75°C. Agree, not everyone has such an opportunity. So let's use the traditional scenario:

Take the cameras
Remove all unnecessary elements from them
Cut them into thin strips
Grind those stripes

The rubber grinder in this case is an ax or scissors.

Mechanical processing method

The most professional way. The technological line is a sequence of installed working devices, overcoming which the material becomes a finished product.

Processing into crumb rubber goes through three stages:

Tire preparation. Initially, they are washed and cleaned of impurities, after which they are transported by a conveyor to the primary crushing unit, where they are ground with knife crushers to large pieces (30-50 mm).
At the second stage of the technological process, the primary processed raw material is fed by means of a belt conveyor to a hammer crusher, where it is crushed again to smaller sizes (10-20 mm). It is at this stage of processing that the metal and textile cord, bead wire is separated from the rubber. Textiles are separated by a special textile removal system, and metal is separated by a magnetic separator. The collected metal waste is then briquetted.
At the final stage, processing into crumbs is already underway. As equipment for processing tires into crumbs, an extruder is used - a grinder, in which the rubber mass is ground into a fine powder. At this stage of tire processing, additional cleaning of crumbs from textiles and metal is also carried out using a gravity separator. After that, the crushed rubber crumb is divided into fractions and packed in polyethylene bags of 20 kg or in big bags (soft containers) with a carrying capacity of up to 1000 kg.

Today, there are a sufficient number of manufacturers of this equipment on the Russian market.

Chemical processing method

With the chemical method of processing, automobile tires are subjected to pyrolysis. With this processing method, the thermal decomposition of rubber into its constituent elements occurs. Tires are pre-crushed into a homogeneous mass and sent to an oven, where they decompose at a temperature of 500 - 800 ° C. This procedure lasts 10 - 20 minutes. During the thermal decomposition of rubber, about 50% hydrogen and 26% methane are formed, as well as solid pyrolysis products, which are then used in cleaning. Wastewater on the treatment facilities Russia.

There is also an effective, but expensive physical and chemical method for processing tires into crumb rubber - cryogenic grinding of car tires. Crushing of rubber is carried out in a special cooling chamber at extremely low temperatures (up to - 120 ° C). A refrigerant (liquid nitrogen) is supplied to this chamber, cooling to ultra-low temperatures. In conditions of strong cooling, the rubber acquires a glassy state. Crushing of rubber occurs when struck with a special hammer. After grinding, textiles and metal are removed from crumb rubber.

V modern time There are many mini tire recycling plants. The business plan for recycling car tires is quite simple. Its implementation will require modern tire recycling equipment, warehouse equipment, fuel tanks, tools and overalls for workers, as well as equipment installation costs. It is necessary to register an enterprise and a license that will allow you to engage in this type of activity. Starting this business will require significant start-up capital.

In this material:

A business plan for recycling tires into crumbs will help determine the initial investment for renting or buying premises, and purchasing equipment. Market monitoring will minimize risks and downtime, competition in this area is low. The launch of the line quickly pays off, the ability to purchase raw materials at very low prices (and even earn money on it!) Makes the business economically profitable.

Crumb rubber production

Recycling car tires with further production of crumb rubber is a profitable business, but this niche is still relatively free. If there are funds to buy equipment, the mini-factory will not be idle due to lack of raw materials: used tires are not so easy to dispose of, many enterprises and individual entrepreneurs face a real problem. A well-organized business will also make it possible to earn money collecting and exporting tires.

Business Description

Waste tires are waste of the 4th hazard class. Legislative relaxations have simplified their disposal, which often comes down to either long-term storage or tire burning. In both cases, the damage environment, there is a danger of reproduction of rodents and the spread of infectious diseases.

Environmental services pay close attention to the storage of used tires. The materials that were used to make them take decades to decompose, and the tire recycling business is a modern solution to the problem. In addition, the recycling of rubber reduces oil consumption. The problem of tire recycling is acute all over the world, and Russia is no exception. Penalties for improper storage of used tires are high for both enterprises and individual entrepreneurs.

Competition analysis

Paradoxically, in small towns, city authorities are faced with the need to organize landfills, look for ways to solve the storage and destruction of tires with minimal damage to nature. An individual entrepreneur who solves an urgent problem by organizing a mini-factory for tire recycling will most likely receive support from the authorities, both legal and material.

Competition in business today is low, small enterprises operating on the basis of factories of the Soviet period are rarely equipped with modern equipment. The problem of recycling is often solved with the help of fire, and you can make money on this garbage that no one needs. The problem is in the mentality (the idea that it is possible and necessary to benefit from the separate collection of garbage that has not fully fit into the minds) and in the start-up capital.

Activity registration

Tires can be recycled by an individual entrepreneur who has received permits:

fire service;
Rospotrebnadzor;
environmental inspection;
body for labor protection;
regional authorities.

In addition, contracts with suppliers and buyers of finished products, employment contracts with staff and medical books with a medical examination will be required.

As a taxation system, the USN is preferable.

Room selection

The choice of a suitable room rests primarily on its location: the territory of the city industrial zone is suitable for such purposes, far from residential buildings, but within the city. The closer the enterprise is located and the more convenient the entrance to it, the higher the probability of delivering tires to the site by those who are interested in this.

In other cases, you will have to pick up the tires yourself, and these are additional costs for fuel and vehicle maintenance.

It must be said that processing plants may well be located in close proximity to residential areas, but in this case they must comply with all sanitary standards and not cause any trouble to residents. Otherwise, complaints and “showdowns” from the inspection services will follow, which in one way or another will negatively affect business development.

The size of the room depends on the choice of equipment, you will also need a room for staff, a shower room and a bathroom, a warehouse for storing finished products. Tires can be stored under open sky, under a canopy or without it, provided that the territory allows.

Buying a property or limiting yourself to rent is a voluntary choice for everyone. Own premises can be converted "for yourself" with the expectation of long-term use, on the other hand, if there is no confidence in the prospective development of the business, you can limit yourself to renting (for example, subsequent purchase).

The question of price is relevant, but very individual: the rent and purchase of a building, even within the same locality, varies greatly, not to mention the spread in prices in a metropolis and a small town. Before making a choice, it is worthwhile to thoroughly study this issue, not limited to official announcements in the media, not shunning word of mouth and reviews from acquaintances or business partners.

Necessary equipment

To start production, you will need to install and adjust an automatic line, the processed products will be:

rubber crumb of several fractions;
metal cord;
textile cord;
pyrolysis carbon black;
synthetic fuel (liquid phase) and gas.

Necessary equipment:

Tire shredders. Machine tools for removing steel cord and its separation, cutting rubber, grinding it.
Separators. Vibrating screens of various types of cleaning.
Transporters. Belt, bucket, screw.

A set of machines for grinding tires will cost, on average, 1,250,000 rubles.

The cost of the line depends on the performance and power, as well as on the "brand name" of the manufacturer. The simplest equipment will cost from 2 million rubles. Modern high-performance equipment allows processing up to 1.5 tons of raw materials per hour.

Recruitment

To determine the number of employees, you need to decide what schedule the enterprise will work on: shift production of crumbs around the clock without days off, or work only on a day shift with a five-day work week.

In the first case, you will need workers for 3 shifts (2 people each), a foreman for each shift, a technician for servicing (adjusting, repairing) equipment, a tire receiver (he is also a raw material warehouse manager), a manager who combines the position of a purchase and sales manager crumbs.

Daytime work involves recruiting one shift - 2 workers, 1 foreman, otherwise everything is the same. Immediately or over time, you can open your own tire shop (a source of used tires), but it will justify itself only if the processing plant is located within the city.

Workers and foremen are specially trained to work with the equipment. Such services can be provided by the manufacturer.

Business promotion

Given the specifics of the business, it is worth taking care of advertising for your services in advance. In addition to working directly with stakeholders (enterprises, tire shops, individual entrepreneurs), it is worth paying attention to advertising in the media, opening your own website and posting information on third-party portals. It may seem that an information campaign is an unnecessarily costly side of things, but the faster the general public learns about the work of the workshop, the greater the likelihood of a quick return on investment.

Financial plan and profitability

Based on approximate calculations, then at first the main costs will be (per month):

rent of premises - 15 thousand rubles;
payment for electricity, water supply, sewerage - 20 thousand rubles;
payroll fund - 100 thousand rubles;
advertising campaign - 5 thousand rubles;
maintenance / repair - 2 thousand rubles.

In addition, you need to add the purchase of machine tools - 10-15 million rubles; taxes and loan payments.

When recycling tires, the crumb yield is about 70% of the mass, the rest is textile and metal cord, they also go into business, the prices for the purchase of recyclables and, especially, scrap metal are quite high.

The cost of a kilogram of rubber crumb, on average, is 20 rubles; textile and metal cord with rubber content up to 5% - 2-3 rubles.

The tire recycling business has its pros and cons, whoever wisely takes the risk and takes the relatively free market space will reap their profits. Provided that the business plan is thought out and calculated to the smallest detail. First of all, the question concerns the supply of raw materials (will not powerful, promising high profitability through turnover, expensive equipment be idle?) And the sales market (rubber crumb is widely used in various sectors of the economy, but you need to be able to interest consumers in the price, quality of goods and services ).

In European countries, the process of eradicating such concepts as "waste" and "garbage" has been going on for quite a long time. Almost anything can be recycled into useful materials - from plastic bottles to used car tires. Rubber crumb, which is obtained by grinding tires, is a fairly useful material that can be used in a variety of industries. A tire recycling business plan with calculations will be an excellent guide for aspiring entrepreneurs in this specific but profitable endeavor.

To open your own small enterprise for the disposal and recycling of old tires in a provincial town, you will need to initially invest at least 2 million rubles. Given the not entirely stable economic situation in Russia, it is better to use personal savings to start a business, refusing loans and other types of loans.

Brief description of the concept

In order for a businessman to open a private tire recycling plant, you must first visit the local branch of the Federal Tax Service. An example of this business plan involves registering an IP. A limited liability company in this case is not entirely suitable. The optimal taxation system for this business is the simplified tax system of 15% (income minus expenses). If the entrepreneur has basic knowledge in accounting, then the appropriate specialist may not be hired. As a last resort, outsource the filling of tax returns. When registering, it is very important to choose the appropriate OKVED codes, namely the following:

38.32 "Utilization of sorted materials".
38.32.54 "Treatment of rubber waste".

Until 2012, a license was required to organize a line for processing tires into crumb rubber. V this moment there is no such need.

How much to invest in opening

The costs that are inevitable at the initial stage of organizing a private plant for the processing and disposal of automobile tires are as follows:

From the table above, it can be seen that the equipment for processing tires into crumbs is the main cost item at the start-up stage of this business. Also, do not save on preparing the premises for the start of production, so that later the relevant authorities do not have unnecessary questions.

Marketing plan

Tire recycling is a rather specific business that does not require significant investments in advertising and promotion. The only thing that should be given increased attention is the search for distribution channels and the establishment of a system for accepting old automobile tires from individuals and enterprises.

The company's income will consist of the sale of crumb rubber and metal cord. The wholesale cost of one kilogram of crumbs for 2017 is 20 rubles. From one ton of tires, approximately 700 kilograms of crumbs are obtained. The capacity of the production line will allow the free processing of approximately 1 ton of tires in one working day. Accordingly, the monthly income from the sale of rubber crumb will be about 280,000 rubles, and the annual income will be 3,360,000 rubles.

Production plan

To install a tire recycling line, you should rent a production facility with an area of at least 80 square meters on the outskirts of the city. meters. The area adjacent to the workshop should also be large enough to equip it with places to store tires after they have been received from the public. Naturally, the premises of the workshop must fully comply with the established standards of SanPiN and fire safety. Also, the safety regulations must be impeccably observed in the workplace.

The optimal schedule for the workshop for the processing of tires is as follows:

Monday - Friday: from 09:00 to 17:00.
Saturday - Sunday: non-working days.
One day a month - preventive work.

The list of workers in the workshop for the production of rubber crumb from tires is given in the following table, as well as the approximate salary figures that should be assigned to them:

№	Position	Number of people	Salary, rub.	Monthly payment fund, rub.	Payment per year, rub.
1	Production master	1	25 000	25 000	300 000
2	production line worker	2	15 000	30 000	360 000
3	Equipment fitter	1	15 000	15 000	180 000
4	Tire Receiver	1	10 000	10 000	120 000
5	Sales Manager	1	15 000	15 000	180 000
TOTAL				95 000	1 140 000

Below is a list of equipment that will need to be purchased to organize a production line:

Device for cutting landing rings.
Device for cutting tires into strips.
Device for cutting blanks from tapes.
Apparatus for abrasion and formation of crumb rubber.
Vibrating sieve for the initial cleaning of crumbs.
Two magnetic separators and one air.
Conveyor devices in the amount of three pieces.
Electrical panel.
Vibrating sieve through which the material is finely cleaned.
The device for squeezing out the landing ring.

Calculations of income and expenses

The current costs of ensuring the functionality of the workshop for the processing of automobile tires are as follows:

No. p / p	Expenditure	Amount per month, rub.	Amount per year, rub.
1		15 000	180 000
2		20 000	240 000
3	Salary of workers in the workshop	95 000	1 140 000
4	Deductions for personnel in the FSS	28 500	342 000
5	Marketing expenses	5000	60 000
6		2000	24 000
7		3000	36 000
TOTAL		168 500	2 022 000

The profitability of a tire recycling shop organized in a small town is shown in this table:

No. p / p	Indicators	Amount for this year activities, rub.
1	Planned income from car tire recycling	3 360 000
2	Cost of expenses for disposal and recycling of tires (sum of lines 2.1-2.7)	2 022 000
2.1	Monthly plant rental fees	180 000
2.2	Utilities (mainly electricity)	240 000
2.3	Salary of workers in the workshop	1 140 000
2.4	Deductions for personnel in the FSS	342 000
2.5	Marketing expenses	60 000
2.6	Scheduled maintenance and possible repair of equipment production shop	24 000
2.7	Possible additional costs	36 000
3	Gross income (before taxes)	1 338 000
4	Tax payments	200 700
5	net income	1 137 300

Recycling car tires into rubber crumb will bring a fairly decent annual profit of 1.1 million rubles, that is, about 100 thousand rubles will “drip” into the entrepreneur’s account per month. And this is when the production line is not fully loaded! The profitability of the business will be 34% - an excellent indicator. The initial investment in the organization of the production shop will pay off in less than two years.

Possible risks

Tire recycling and recycling is a business that can either “shoot” with huge profits from the first months of operation, or fail in the same period. The reason for the failure can be very unpleasant risk factors that do not need to be discounted when working out the business concept. These negative factors include:

Problems with finding quality equipment for recycling car tires.
An increase in electricity prices, which can lead to an increase in the cost of the production process.
The risk associated with a drop in demand for crumb rubber, which is obtained during the processing of tires.
The risk of a serious increase in the payback period of this business due to the low load on the tire recycling line.

A far-sighted entrepreneur will always calculate the likelihood of such risks to the smallest detail and will try to protect his business from their occurrence as much as possible. So be careful, do not make hasty decisions, and then your business will always be accompanied by good luck and high profits!

Every year, thousands of tires go to landfills and landfills, despite the fact that for an enterprising person they are free resource from which crumb rubber can be produced.

If it was needed only once, you can buy it in the right amount from manufacturers.

But where can you get crumb rubber if you need it on an ongoing basis and in large quantities?

It is worth thinking about buying your own.

but full installation is not affordable for everyone, and not everyone will be profitable such an investment. The way out is to create equipment with your own hands, and use it to produce crumb rubber from tires at home.

If you need very little raw materials, you can do without equipment at all.

This will only require scissors and cutter.

The metal cord is first removed from the tire, then it is divided into ribbons and crushed into smaller fractions to the required size.

At this point, the process is considered complete.

Material for the design of paths, flower beds or a separate playground is ready to use.

But to get more raw materials or have an income from tire recycling at home, you need the right equipment.

Tire crusher construction

Three main methods of crumb production are used:

Tire crushing after cooling with liquid nitrogen to -190 degrees.
Obtaining crumbs on industrial equipment of a full cycle with the removal and subsequent grinding of rubber.
Recycling using universal crushers, which you can do yourself at home.

The first two methods require large investments. Third option available to everyone who has the ability and desire to make a crusher at home.

Required units can be make it yourself in the workshop or on the production site- where there are metal-cutting machines (turning, milling) and a welding machine for the manufacture of component parts.

If it is impossible to perform the machining of blanks on your own and you have to order them according to your drawings, the cost of tire recycling machines will still be several times cheaper than similar purchased units.

The main component of the tire recycling line is a shredder (rubber grinder). Let us consider in more detail the purpose of the nodes of this machine.

Unit device

The machine consists of the following main units:

electric motor 5 kW - 2 pcs;
housing with disc shafts;
lattice;
worm gearbox - 2 pcs;
shredder frame;
loading bunker;
guide tray;
control cabinet.

Details of the installation are mounted on a powerful frame welded from channels.

Box with cutting discs

The main unit of the crusher for rubber is the body with milling rolls.

At the same time, the cutting knives are made of high-strength steel and heat-treated, which significantly reduces their wear. They practically do not require sharpening during operation.

The calculation of the openings of the box, shafts and cutting elements must be accurate, so it must be done by a specialist in this field (designer).

Grid for crumb calibration

In order to obtain a calibrated fraction of tire raw materials, shredders are equipped with a special grate, which is installed under the rolls.

Worm gear

The rotation of the shafts with disk cutters is carried out separately, directly from the worm gears connected to the electric motors through couplings.

The gear ratio is selected from 25 to 35 in such a way that so that the cutting is free of sticking and at a sufficient speed.

Machine frame

The frame is welded from profile elements, ensures the reliability and stability of the unit during operation, as well as loading and unloading operations.

loading hopper

The tire recycling plant is equipped with a tire loading hopper and a tray for removing finished rubber crumb.

Due to its design, the bunker eliminates the formation of blockages from raw materials and guarantees the directed movement of the mass towards the rotating rolls.

Tire cutter

Tire cutting and cord removal plant consists of a supporting frame and a rack.

On the carcass is a tire clamping mechanism that rotates with the tire during cutting. The engine speed is reduced due to the different diameter of the pulleys. There is a built-in wedge-shaped cutter on the stand, which is adjusted to a certain size by moving the quill.

How to grind tires?

The technological chain is several preparatory steps before producing the required fraction.

This procedure includes:

Inspection and removal of foreign objects from the cavity of the tire.
Cord cutting.
Tire cutting on tapes measuring 50-80 mm.
Grinding raw materials through a shredder.
Separation and separating metal from textile parts.
Calibration crumbs into fractions using a vibrating sieve.

Equipment performance

The operation of these two main units in the processing of tires done in semi-automatic mode.

For the normal operation of this line, a room of about 150-200 sq. meters. This is due to the fact that you need a place for the location of not only equipment, but also for storing worn tires, finished tire products and metal waste.

The output of crumb rubber on this equipment per hour will be approximately 200-800 kg and up to 100 kg of scrap metal, 2-3 unskilled workers will be needed to service the machines.

In addition to tires, this equipment can process other rubber (conveyor belt, cameras, gas masks). The output is a crumb with sizes from 0.7 to 4 mm, while it is 65-85% of the total mass of raw materials.