As a natural solid rock aggregate, gangue is a solid waste discharged in the process of coal mining and coal washing process, a mixture of inorganic and a small amount of organic matter, gangue has plasticity, must be finely crushed before plasticity, gangue plasticity is low, the contraction is also small, the general line shrinkage of 2.5-3%, the sintering temperature of the gangue is generally in the 1050 degrees, belongs to the medium and low refractory materials, general Refractoriness in 1300-1350 degrees, with low heating value.

What are the gangue crusher equipment

Gangue how to turn waste into treasure, this process is bound to be less crushing equipment credit, common gangue can be crushed equipment which:

1, jaw crusher: some gangue block is large, need to be roughly crushed first, and then subsequent processing, jaw broken is mainly responsible for the rough crushing of coal gangue and other materials processing, with a large crushing ratio, strong processing capacity, rugged and durable features. Jaw Crusher Coal gangue coarse crusher, low failure rate, small loss

2, impact crusher: coarse crushing process, generally use the impact crusher to the gangue in the fine crushing process, the finished product is good, diverse specifications, to meet the production needs of different industries.

3、Double-stage crusher: This equipment is a fine crushing equipment, can be gangue and other materials for fine crushing, because there is no screen device, so it can deal with materials with large water content.

4, mobile crusher: coal gangue is generally stacked not centralised, so with this mobile crusher will be much more convenient, it can be free to turn the site, raw materials do not need to be transported away, and there is no need to pile up before the operation, the operation is very convenient and fast.

Coal gangue crushing process

Gangue processing process can be roughly divided into four steps: crushing, medium and fine crushing, sand making, sand washing, about the specific steps in the operation, please see below:

1, coarse crushing process: gangue through the vibrating feeder into the jaw, after screening qualified into the impact crusher, unqualified return to continue crushing;

2, fine crushing processing: coarse crushing gangue through the impact crusher crushing, shaping process, the finished product size is fine and uniform, and then through the vibrating screen for grading, unqualified return, qualified into the sand making machine;

3, sand processing: fine crushing of stones within 60mm into the sand making machine, through the "stone to stone" "stone to iron" interaction, small stones are beaten into sand;

4, sand washing process: sand containing mud through the sand washing machine can get a relatively clean finished sand, mainly according to the customer's actual operational needs configuration.

Coal gangue application

1、Recover coal and pyrite. Through a simple process, wash out good coal from the gangue, select poor quality coal through screening, while picking out pyrite; or from the coal jigger - plane shaker process to recover pyrite, washing mixed coal and coal.

2、Used for power generation. Mainly wash coal and wash gangue mixed power generation, China has used the boiling furnace combustion wash coal and wash gangue mixture of power generation, slag can produce slag bricks and slag cement.

3, the manufacture of building materials. Coal gangue can be used instead of clay as raw material for making bricks, can be less digging good land, burning bricks, the use of gangue itself combustible, can save coal.

4, in addition, the gangue can also be used for the production of low calorific value gas, the manufacture of ceramics, the production of soil conditioner, or used for paving, well filling, ground filling land, etc., a wide range of uses.