subject: Crusher And Milling Machines Propelled The Use Of Coal Resources [print this page] Coal is China's most important energy resources, its social and economic development play an extremely important role. Development and use of coal, both on plays a huge role in promoting socio-economic, but also had a significant impact on the environment. The development of coal gangue and coal-bed methane is the main waste generated in the process, the coal industry has long been regarded as hazardous substances and hazards of gas. Since the Third Plenum of the Eleventh Party, with the continuous deepening of economic reform and China's healthy and rapid development of industry and agriculture, in the case of energy increasingly scarce, people gradually realized that these wastes are still available for the use of side. Particularly in the last 20 years, the coal sector in the development and utilization of coal gangue and coal-bed methane has done a lot of exploration and production test achieved a number of achievements.
Practice has proved that as long as the changing concepts, scientific research, according to local conditions attention to development and coal production in the process of secondary use of mineral resources is not only entirely feasible, but has great potential; not only of harm into turning waste into treasure, and can save energy, and get major social and economic benefits. Coal gangue in the tunneling, mining and washing process of the solid waste discharges. Carbon quality, a mixture of clay and sandy shale, with low heat value. Carbon content of 20% ~ 30%, and some containing humic acid. China has accumulated over the years gangue about 1000Mt, and each year continues to emit about 100Mt, not only the accumulation of land, but also pollute the air or cause spontaneous combustion fire.
In recent years, with the various sectors of the comprehensive utilization of coal gangue awareness of the rapid rise of research, how to gangue turning waste into treasure? At home and abroad have been developed many ways to use. The basic principle is in identifying the nature of coal gangue based on the distinction so that the best use, and will use a variety of ways to combine the development of a certain scale and utilization system in order to get the best value for money. According to China's actual conditions, its use generally has five areas:
1. Underground coal mine filling. In the mining process of gradual reform, based on the use of coal gangue in the underground mined-out area, or directly to filling the ground after processing filling underground mined-out area.
2. Coal Mine Ground Subsidence Filling, reclaimed wasteland and pave the way for.
3. Coal gangue power generation. Containing carbonaceous more, the higher heat of gangue, can be used as fluidized bed and circulating fluidized bed power generation.
4. Production of coal gangue brick, cement and construction materials such as lightweight aggregate.
5. To extract sulfur from the coal gangue concentrate and other chemical products.
Whether it be coal gangue for which way to the end of gangue by Jaw Crusher, Impact Crusher, Cone Crusher, Raymond Mill, Hign Pressure Suspension Grinder mill, the comprehensive utilization of processing equipment and other categories.
Is only one part of the comprehensive utilization of coal gangue, coal development process, there are many secondary can be exploited mineral resources. For example, the mine water is also the threat of a major coal mining disaster, as long as the strengthening of management, the implementation of row for the combination, not only of harm into, but also can effectively resolve the problem of water resources needed for mining. Different times in our country's coal seam and surrounding rock, the symbiotic and beneficial elements associated mineral resources are very rich in alumina clay, kaolin, bentonite, diatomite, oil shale and germanium, gallium, uranium, vanadium, etc., In some mining areas or seams that can be enriched up to industrial requirements, comprehensive utilization of coal resources, coal resources should be enhanced investment in secondary use.
