Sieve bend screen for coal mining 

Objective

The raw coal from surface and underground mining out, it is mixed with many impurities, and the quality is different. In order to improve coal quality, raw coal on entering the coal preparation (washing) plants will be screened into three or four sizes, which then go through to the appropriate cleaning process, by washing coal cleans and removes dirt, rock, ash, sulfur, thus increased the coal comprehensive utilization efficiency, improve environmental quality and reduce transportation costs.

Solution

Sieve bend screens are widely used for separating different grades of coal and recovery of fine coal particles in coal mining industries. The sieve bend screen is commonly placed before the vibrating screen to improve efficiency. Mainly for coal washeries moving the material to be pre-dehydration, mud, off-mediated job, classification of slime recovery. Sieve bend screens are constructed with V type profile wire, the screen slot is narrow in the above and wide in the below, gives the screen good non-clogging properties.

Basic Principle

Sieve bend screen is an economical and practical solid-liquid separation equipment. The coal slurry flows down the curved screen, The screen constructed by stainless steel v shape profile wires, the unique wire sharp provides a sequence of edges for cutting the flow. The water with small particles falling through the screen slot, while larger particles are retained on and continue down the screen surface.