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Development and promotion of polymer polyurethane screens
- 2017-10-14-

  The main chemical composition of polyurethane screen is polyurethane, polyurethane. It belongs to mining equipment and is used in mines and quarries. Depending on the raw materials used, polyurethane screens also have products with different properties, generally polyester and polyether. It can be used to make plastics, rubber, fibers, rigid and flexible foams, adhesives and coatings. Its production materials are polymer organic elastomers, which have excellent abrasion resistance, flex resistance and large bearing capacity. The production materials have undergone special treatment to ensure that they will never delaminate under long-term alternating loads. And using imported raw materials, its elastomer and its own good relaxation performance, effectively avoid hole plugging under dynamic conditions. The sieve surface has self-cleaning performance, does not block holes, and has high screening efficiency. Due to the strong permeability of polyurethane and the large cone angle of sieve holes, it can effectively prevent the adhesion of wet fine particles, so it is suitable for the sieving and classification of wet fine particles.

The development and promotion of high-wear-resistance polyurethane screens is one of the key scientific and technological research projects of the "Eighth Five-Year Plan". It is suitable for the screening, dehydration, and demediation of materials in the mining, coal, metallurgy, power plants, construction, and waste treatment industries etc. It has been favored by the majority of screening machinery manufacturing enterprises and users for its characteristics of wear resistance, light weight and long life. As we all know, the operating environment of crushing, beneficiation and screening is very harsh, with a lot of dust, high humidity, high noise, large processing capacity, and hard ore. Especially the screen of vibrating screen is the working surface for material screening. The impact force at the material end unloads and bears the load of the ore and the vibration of the machine (including the secondary vibration). It is not only a screening device but also a function of transporting the material on the screen. During the movement, the material slides on the screen. Friction, rolling friction, impact, abrasion and corrosion seriously affect the service life of the screen, so the screen must be easy to remove, easy to replace, wear-resistant, corrosion-resistant, impact-resistant, good self-cleaning, and long life Features.