Gangue is a low calorific value of fuel, kaolinite qualitative gangue contains abundant aluminum resources and a lot of other mineral components can be put to use. Our government also attaches great importance to the comprehensive utilization of coal gangue, puts forward “adjust measures to local conditions, actively use” the policy, and adopted a series of policies, such as funding, interest loans, derate tax etc, encourage the comprehensive utilization of coal.
Using the gangue manufacturing sintered. Due to the national advocacy and support, our country gangue brick making industry rapid development. At present, the gangue brick production has been YiKuai 200 in comprehensive utilization of coal gangue, about 5,000 tons. In addition, coal gangue production in power generation, chemical fertilizers, soil improvement aspects of mine and backfilling mined-out area also showed positive use value.
With the development of science and technology gangue got comprehensive utilization, gangue contain a lot of useful substances, such as silicon, aluminum, iron, potassium, etc, in related solvent, under the action of help at low temperature decomposition gangue production white carbon black, can get hydrogen ferric oxide and aluminum hydroxide etc chemical products. Silica is an important chemical raw materials, high surface activity, is widely used in rubber, defense, plastic, electronic industries. Therefore using the gangue production white carbon black, and other chemical raw materials, has the very high economic benefits.