Conveyor belt is the main part of belt conveyor. It is mainly used for large-scale continuous transportation in coal, mining, metallurgy, chemical, construction and transportation sectors. The transported materials are divided into blocks, powders, pastes and finished pieces. Items etc. It is widely used in quarries, aggregates, mines, cement plants and other industries.

All rubber conveyor belts are composed of two different elements:

The carcass gives the product mechanical properties such as tensile strength and elongation. There are two main belt conveyor belt series: textile conveyor belts and wire rope conveyor belts.

Two rubber covers are called top cover and bottom cover, they can protect the carcass. All types of rubber coverings have antistatic and ozone protection functions.

Types of heavy rubber conveyor belts

According to different carcass materials, heavy rubber conveyor belts can be divided into:

Fabric rubber conveyor belt

Rubber conveyor belts with polyester, nylon and other materials as the carcass are called fabric conveyor belts, also known as textile conveyor belts. It has the characteristics of wear resistance and impact resistance. It is suitable for medium and long distance, high capacity, high speed conveying materials, and is widely used in mining, metallurgy, construction, port, electric power, chemical industry and other industries.

According to the performance of the covering layer, it can be applied to different regions, different cold and hot conditions, and different conditions for various bulk materials such as food, chemical products, etc. Down delivery. Ordinary conveyor belts are widely used in building materials, chemical industry, coal, electric power, metallurgy and other sectors. They are suitable for conveying non-corrosive and non-spike-free massive, granular, powdery materials, such as coal, coke, sand, and Cement and other bulk materials (materials) or finished articles, conveying various bulk, granular, powder and other loose materials with a bulk density of 6.5t to 2.5t/m, can also be used for conveying body articles.

Steel cord rubber conveyor belt

The rubber conveyor belt with steel cord as the carcass material is called steel cord rubber conveyor belt.

Steel cord conveyor belt features: high tensile strength, good impact resistance, long service life, low elongation, good trough formation, good flexure resistance, suitable for long-distance, long-haul, and high-speed transportation of materials.

Steel cord conveyor belt use: widely used in coal, mining, port, metallurgy, electric power, chemical industry and other fields to transport materials.

According to the use environment, heavy rubber conveyor belts can be divided into 5 types

Flame retardant conveyor belt

Oil resistant conveyor belt

Heat-resistant conveyor belt

Cold-resistant conveyor belt

Chemical resistant conveyor belt


Flame retardant conveyor belt

Flame-retardant conveyor belts usually use fabric or steel cord as the carcass material, and the cover layer uses special flame-retardant rubber. It is widely used in underground mining, coal transportation and other applications.

In buildings and in safety-critical tunnels and mines for internal transportation, flame-retardant conveyor belts are mainly used. In environments involving coal dust, gas, fertilizer or other combustible materials, flame-retardant conveyor belts must be used. Will ignite the static electricity of the gas and dust in the atmosphere.

This type of belt is mainly designed as:

In order to prevent the spread of accidental fire.

Prevent the danger of explosion due to static electricity accumulation.

Oil resistant conveyor belt

The oil-resistant conveyor belt uses cotton canvas, nylon canvas, and polyester canvas as the carcass, and is refined through calendering, molding, vulcanization and other processes. The covering rubber uses nitrile rubber as the main material, which has a low volume change rate and high strength. The advantages of wide range of use. It is suitable for transporting oily materials or contacting various working oil environments.

Application of oil-resistant belt:

Crushers, mining, coal miners, thermal power plants, cement plants, steel plants, fertilizer plants, ports, mining and metal industries, etc.

Heat-resistant conveyor belt

The heat-resistant conveyor belt for the heat-resistant conveyor belt is made of multilayer rubber cotton canvas or polyester canvas as the carcass material, and the cover layer is made of high-temperature or heat-resistant rubber, bonded together by high-temperature vulcanization, suitable for conveying hot coke below 175℃ , Cement, slag and hot castings, etc. Mainly used in metallurgy, construction and other industries to transport high-temperature materials such as sintered ore, coke, cement clinker, etc. The material temperature does not exceed 800℃, and the belt surface temperature does not exceed 220℃.

Cold-resistant conveyor belt

The cold-resistant conveyor belt is made of cotton canvas, nylon canvas, polyester canvas or steel cord as the carcass material, and the covering rubber is a mixture of natural rubber and butadiene rubber. It has the characteristics of high elasticity, impact resistance and cold resistance, and can be sub-zero Normal use at 40℃.

Cold-resistant conveyor belts can be divided into three types according to the nature of the covering:

Tear-resistant type (H), wear-resistant type (D) and normal type (L).

Chemical resistant conveyor belt

The chemical-resistant conveyor belt is a kind of working environment suitable for contact with acids and alkalis, such as phosphate fertilizer manufacturing, sea salt, and covering rubber using inert materials with excellent acid and alkali resistance.

Product characteristics: Choose cotton canvas, nylon canvas or polyester canvas as the conveyor belt carcass material, which has good elasticity, good groove forming performance and low elongation in use. The covering rubber made of acid and alkali resistant materials has good chemical resistance and good physical properties.

Uses: Suitable for chemical plants, fertilizer plants, paper mills and other factories and mines to transport corrosive materials such as acid.

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Splicing method of rubber conveyor belt

All heavy industrial conveyor belts must be connected in a ring shape to be used, so the quality of the conveyor belt joints directly affects the service life of the conveyor belt and whether the conveyor line can run smoothly. General conveyor belt joint methods include mechanical joints and vulcanized joints.

Mechanical splicing

Generally refers to the use of belt buckle joints. This joint method is convenient, convenient and economical, but the efficiency of the joint is low and it is easy to damage, which has a certain impact on the service life of the conveyor belt.


Vulcanization is divided into hot vulcanization and cold fluidization

Cold vulcanizing: Use chemical adhesive to glue the two ends of the conveyor belt together.

Hot vulcanizing: Use heat and pressure to create joints in a hot press.