Product Introduction

Coal gangue is a solid waste discharged from the process of coal mining and coal washing. It is a dark gray rock associated with coal seam during the process of coal production, which is with low carbon content and harder than coal. Coal gangue is generally divided into two kinds, driving gangue and washing gangue. The hardness of washing gangue is 2-5 in Mohs and the granule hardness is not greater than 200mm. The hardness of driving gangue is 3-7 in Mohs and the granule hardness is 200-300mm. Coal gangue is mainly used to produce gangue cement, light aggregate of concrete, firebrick and other building materials, and can also be used to recover coal. Coal and gangue can be used to generate electricity, make chemical products such as aluminum chloride and water glass and extract precious and rare metals. It can also be used as fertilizer. Coal gangue can be used instead of clay to make bricks. In this case, the fields can be used less. When burning bricks, using combustible material of coal gangue itself can save coal. Coal gangue can be used to produce ordinary cement in part or in whole instead of clay, which can be used to sintering light aggregate. In addition, coal gangue can also be used to produce low calorific value gas and make ceramics and soil ameliorators, or be used for paving, downhole filling and ground filling. The gangue mountain can also plant afforestation to beautify the environment after spontaneous combustion.

 Technical Process

 The raw material of coal gangue is transported to jaw crusher by vibrating feeder for first crushing. Jaw crusher drives the eccentric shaft to rotate through the belt, keeps jaw plates close periodically, then leaves the fixed jaw plate, squeezes, rubs and grinds the materials until they meet the requirement and discharge from the outlet. After first crushing, coarse materials are graded by vibrating feeding sieve. The materials that don’t satisfy the requirement will enter impact crusher or cone crusher for second crushing again. Impact crusher reaches the purpose of stone crushing by hitting material and board hammer, material and impact board, material and material. The finished products are screened by vibrating feeding sieve once again. The satisfied materials are transported to sand making machine by belt conveyor. The crushed coal gangue is sent into sand making machine for further crushing. If clean coal gangue                                                                                                                                                                                  is needed, it can be sent to sand washer to clean.   

 Equipment Recommendation

                                   Jaw Crusher                                                                                 Hammer Crusher                                                                                         Fine Crusher