New Working Mode for Opencast Coal Mine
Coal Mine Industry
With global scientific and technological progress, the coal industry is changing from labor-intensive into capital and technology-intensive. The coal technology has also transformed from mechanized production to automatic control. Robot or artificial intelligence combined with expert is the new way for coal mining.
In order to solve the problem of small coal mine area and inconvenient transport of equipments, SBM, based on 20 years' production experience and several years' research, manufactures the world-class high-quality crawler type mobile crushing plant. It is made by impact crusher, jaw crusher, cone crusher, vertical impact crusher, conveyor, belt conveyor etc. It can meet different requirements "screening after crush" and "crush after screen". The crushing process can be divided into two phases "coarse and fine", and three phases "coarse, middle and fine". Moreover the mobile crushing plant can operate independently and jointly with great flexibility.
Mobile crushing plant has changed the past old way of coal processing mode in coal industry. It improves the efficiency of integrative coal treatment and highly recommended in coal and mining industry.
Knowledge of coal
Coal falls mainly into three kinds: coking coal, anthracite and steam coal.
Coke is used as a fuel and as a reducing agent in smelting iron ore in a blast furnace. Usually, 1.3 ton coking coal can process 1 ton coke. Coking coal is the fuel source for steelmaking and the major additive in steel industry. Being regarded as the "main food source of steel industry", coking coal is one of the strategically important materials in the market of raw materials around the world.
Anthracite is also called white coal or red coal, it is of high coallificaton degree, high carbon content, less-ash, lack of water and high heat. Smoke-free lump coal is mainly for fertilizer (nitrogenous fertilizer, synthetic ammonia), ceramics, forging and manufacturing industry; while fine anthracite is mainly for BF pulverized coal combustion (fine coal injection in BF includes anthracite, meager coal, lean coal and gas coal).
Steam coal can be seen in generating electricity, locomotive and boiler combustion. It is mainly used in power making; about one third of the whole coal is used to make power. Secondly for steam locomotive. This accounts for 2%. Thirdly for building materials. For example, in concrete, glass, brick and tile(10%). Fourthly it is used as fuel in industrial boilers. This part uses 20% coal. Lastly metallugury uses 1%.
