Coal Gangue Turned Into New Inorganic Non-metallic Materials

Coal gangue is a byproduct of coal resource development and has always been regarded as waste that pollutes the environment. Inner Mongolia, which is rich in coal resources, emits more than 30 million tons of coal gangue every year. Now in an economic development zone in Inner Mongolia, coal gangue processing continues to deepen, and its products have become new materials in the fields of aviation and navigation. Industrial solid waste such as coal gangue and fly ash has been processed and reused, and turned into new inorganic non-metallic materials such as microcrystalline balls, mullite, and fine casting sand. "

In the economic development zone, some inorganic non-metallic new material enterprises have invested in the treatment of solid waste such as coal gangue. A customer of Shanghai Zenith officially put into operation this year's 100,000 tons of refractory material project. In the company's production workshop, batches of industrial solid waste coal gangue are transformed into high-end refractory materials through processing procedures such as crushing, grinding, and high-temperature calcination, and are transported across the country. "This project mainly uses solid waste coal gangue as raw materials to produce precision casting sand, mullite, refractory bricks and other products, which are widely used in military, aerospace, automobile, ship and precision casting industries.

Coal gangue with high aluminum content is a high-quality raw material for the production of high-grade refractory materials. Coal gangue, which was useless in the past, is processed by our technology and turned into a high-grade refractory product - mullite bricks. The price of this kind of brick is about 4,000 yuan per ton, and its refractory temperature can reach more than 1,700 degrees Celsius. Meanwhile, the reusing of waste coal gangue can also help to reduce air pollution and improve the ecological environment. "

Inorganic non-metallic enterprises make a big fuss about industrial solid waste such as coal gangue and fly ash, and focus on the development of inorganic non-metallic material industries mainly producing mullite and refractory materials. Only in the economic development zone, inorganic non-metallic materials have been gathered There are 15 new material enterprises, and 12 kinds of inorganic non-metallic new material products have been produced. Industrial solid waste has achieved a "magnificent turn" here.

At present, the comprehensive utilization of industrial waste resources such as industrial waste slag, coal gangue, fly ash, and industrial by-product gypsum is still in progress, gradually forming coal coking, porous ammonium nitrate, acetylene chemical industry, cogeneration, gas, ceramics, kaolin, An industrial chain of interdependence and mutual utilization of new materials.