In recent years, with the improvement of the level of science and technology, people’s demand for goods has become more and more refined, and the quality has become higher and higher. The technology of vibrating screens also has higher requirements in the manufacturing industry. At the same time, with the development of the national economy, the screen Sub-technology and equipment are becoming more and more widely used in various industries.
Five processes of vibrating screen in coal preparation operations
In coal preparation operations, most of the vibrating screens are used to classify or dehydrate items. At the same time, in order to improve the accuracy of items, vibrating screens are often used to classify their items. In the coal industry, the role of vibrating screens is not only to classify, most of the vibrating screens are also used for dewatering or de-intermediation of coal, and even for desilting. In the coal preparation plant’s screening operations, raw coal preparation and product processing, it is mainly divided into five categories.
1. Prepare for sieving
Also called pre-screening. In the coal preparation plant, according to the requirements of the crushing operation and the sorting operation, the raw coal is screened into different particle sizes to prepare for the further work of the coal.
2. Dewatering and screening
Screening for the purpose of dehydration is used in the coal preparation plant for the dehydration of the processed products. The sieve used for the dehydration operation is called a dehydration sieve.
3. Desliming and screening
Screening for the purpose of removing slime. Desliming and screening is the operation of coal preparation plant in order to reduce the pollution of high ash fine sludge to clean coal. In the process of dewatering on the sieve, water jet washing is strengthened to remove part of the fine sludge. Desliming and screening are mostly used in heavy-medium coal preparation plants. In order to reduce the pollution of coal slime to the media system, desliming and screening should be used before coal enters the heavy-medium separator.
4. Screening for the purpose of removing heavy media
It is also called de-intermediate screening. It is a de-intermediate operation in which the product of heavy-medium coal preparation is sprayed with strong clean water on the sieve to separate the product from the heavier mass.
5. Slime recovery
It is screened for the purpose of recovering coal slime and used for dewatering of coal slime and tailings in coal preparation plants.