Coal gangue brick making process and its advantages
The main component of gangue bricks is gangue. Coal gangue is solid waste discharged during the coal mining process and coal washing process. Its main components are Al2O3 and SiO2, and it also contains varying amounts of Fe2O3, CaO, MgO, Na2O, K2O, P2O5, SO3 and trace rare elements (gallium, vanadium, titanium, cobalt).
The production cost of coal gangue bricks is lower than that of ordinary clay bricks. Using coal gangue to make bricks not only saves land, but also consumes waste from mines. It is a low-carbon building material that is conducive to environmental protection.
Coal gangue bricks are finished bricks made of coal gangue discharged from coal mines as the main raw material, mixed with a certain amount of quicklime and gypsum, and subjected to pressure molding and steam curing. The production of coal gangue bricks generally includes processes such as raw material processing, mixing, digestion, wheel grinding, molding, curing, and finished product stacking. The main production process includes four parts: raw material preparation, proportioning digestion, compression molding and steam curing.