Refractory is an inorganic non-metallic material with a fire resistance of not less than 1580 ° C. It is used in various national economies such as steel, non-ferrous metals, glass, cement, ceramics, petrochemicals, machinery, boilers, light industry, electricity, and completion. Fields are essential basic materials to ensure the above-mentioned industrial production operation and technological development, and play an irreplaceable important role in the development of high-temperature industrial production. (金禾机械)就主要介绍下振动筛在耐火材料制备过程中究竟是怎样发挥作用的。 The production process of refractory materials varies according to the variety of refractory products and raw materials, and the process conditions are different, but the general production process must go through raw material crushing-fine grinding-screening-blanks-kneading-molding-drying and Firing and other processing steps, the "screening" process is mainly completed by the efficient screening performance of vibrating screens (the industry often calls refractories vibrating screens ). Today, vibrating screen manufacturers (Jinhe Machinery) mainly introduce How does the vibrating screen play a role in the preparation of refractory materials?
是耐火材料振动筛的常用机型。 Due to the larger specific gravity of the refractory material and the larger mesh diameter required during screening, and considering its requirements for screening output, the linear vibrating screen is a common type of refractory vibrating screen. The blockiness of refractory clinker (or raw material) for the production of refractory materials usually has various shapes and sizes, and the size can be from powder to large blocks of about 350 mm. After the refractory material is crushed, generally large, medium and small particles are continuously mixed together. In order to obtain particle components that meet the specified size, and to ensure the closest packing to obtain a dense embryo, it is often necessary to use a refractory vibrating screen for screening. In addition, refractory products are generally made into powder when considering the convenience of transportation during transportation. According to the size of the powder particles, the material phase can be distinguished intuitively, which is one of the meanings of the refractory linear sieve.
As mentioned above, most of the models used for vibrating screening of refractory materials are linear vibrating screens, so their working principle and equipment structure are the same as those of linear vibrating screens, that is, they are driven by dual exciters. During the reverse rotation, the excitation force generated by the eccentric block cancels each other out in a direction parallel to the motor axis, and overlaps in a direction perpendicular to the motor axis, so the motion trajectory of the screen is a straight line. The two motor shafts have an inclination angle with respect to the screen surface. Under the combined force of the excitation force and the gravity of the material, the material is thrown on the screen surface to make a forward linear movement, so as to achieve the purpose of screening and classification of the material. The "three-level screening" is generally adopted when refractory materials are sieved, that is, the configuration of three layers and four outlets is usually used. The screen mesh of the refractory vibrating screen can be customized according to requirements. , 8mm.
Although all linear vibrating screens are the same in the working principle and the structure of the screening machine, in view of the different physical and chemical properties of different screening materials, and the screening requirements and production environment of customers when using linear vibrating screens are also different. In order to improve the applicability of linear vibrating screens, Jinhe vibrating screen manufacturers will design and modify various details of the linear vibrating screens to different degrees in order to maximize the customer's screening experience. Refractory vibrating screen is no exception, its unique design points are mainly reflected in the following aspects:
1. In view of the large proportion of refractory materials, large-scale sieving will cause greater abrasion pressure on the screen. Therefore, the screen of Jinhe refractory vibrating screen uses a more wear-resistant high-manganese steel screen. The frame also uses a stronger iron frame screen to extend the wear resistance of the vibrating screen and reduce the damage rate and replacement frequency;
2. According to the different raw materials, the crushed refractory raw materials will contain different degrees of magnetic impurities. Jinhe Machinery can effectively remove the refractory materials by installing demagnetizing rods at the inlet or outlet of the refractory linear sieve. Magnetic material.
3. During the screening and feeding process, if there is no connection structure between the feeding hopper and the inner box, the material is easy to generate a large amount of dust during the process of entering the inner box from the feeding hopper and the material is easy to accumulate on the top screen surface. Conducive to the problem of uniform screening. The Jinhe vibrating screen manufacturer can effectively avoid the problem of a large amount of dust caused by falling by installing a soft connection between them, which is convenient to use.
4. In order to improve the screening efficiency of the refractory vibrating screen as much as possible, Jinhe Machinery can set a cone-shaped bulk hopper (also known as a vibrating screen feeder) at the feed inlet of the vibrating screen as required, and the bulk hopper will enter the inner box. The material at the inlet of the body is dispersed, so that the material is pre-screened before screening, which is helpful to prevent the material from accumulating on the uppermost sieve plate, and further improves the screening effect of the refractory vibrating screen.
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