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 Wysłany: Wto 11:30, 09 Lis 2010 Temat postu: ugg stiefel Measures to maximize the recovery of c |
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Measures to maximize the recovery of coal resources and the basis
Unoxidized coal reserves. However, strong oxidation of unoxidized coal and coal and weathered coal, the transition between the weak layer of oxidation of coal. This layer of weak oxidation Coal and indicators: water 7 to 14, without oxidation of 4 # coal water 3 to 5; dry and ash-free basis heat 25. o8IVlJ/kg ~ 31.3IvlJ/kg, without oxidation of coal drying on the 4th heat in the ash-free basis} 31.351vlJ/kg more heat is generally dry basic 12.54 Ⅳ Ⅱ / I 【g ~ 18.81MJ/kg than the unoxidized coal ash as a small 2. ogIVlJ / I 【g. This layer of weak oxidation of coal is not the first person to wash, because people will have to wash muddy. The concentrator MINING TECHNOLOGY torque 3, 1997 increased sedimentation tanks can not be precipitate, flocculant dosage doubled. But can not meet export quality coal. Second, it can not be directly used as commercial coal sales. However, if and 9, u number of coal mixed, crushing and screening through the bypass belt who directly heat storage can guarantee to meet user requirements. l997 \51 coal mining area,[link widoczny dla zalogowanych], weak oxidation of coal mainly in the area within which 28 million. As the top of the weak oxidation of coal and oxidation of coal is not loose. interface uneven big bulldozer equipment, operator is not easy to master, often playing mixed with coal oxidation Good coal, while a good part of coal will be pushed up. estimated that playing to ensure a minimum of oxidation of coal, including coal washing plant weak oxidation of coal,[link widoczny dla zalogowanych], the main plant were mixed into the wash, at least 0.8m pushed up the good playing and coal oxidation of coal mixed with the weak, so this part of the mixture of coal mining should be a separate bypass domestic, turning waste coal as a commodity of coal, recoverable coal 4o million each year t. 5 strengthen the bottom of coal cleaning and recycling in general, coal seam floor is gray pages Rock, also known as the root of clay. bottom floor of coal and clay roots rock contrasting the hardness, in addition to blasting loose coal, coal mining equipment will be dug floor once, but many of the regional coal seam floor is a good transition to the type of coal and rock the ancient mud high and the hardness of the larger high-ash coal. This part of the first mining of coal mining equipment is often not clean, you need bulldozers clearing; and even tilt of coal floor big 1O particular, this part of the coal also requires bulldozers clearing; addition. As the trucks loaded Coal is too full, in the uphill or downhill, the coal can be placed in the way are crushed into fine grains, this part also needs to clean up piles and then packed away. Despite the cleaning out of the floor is often high-ash coal. was crushed and rock mixed with the clay floor of depleted coal quality variation, but the position through the blending of people can pass directly into commercial coal. floor clean coal a year down the number is considerable. 6 Conclusion There are two Opencast Coal Mine Safety a most favorable conditions, one is a steep slope (refer to the 4th floor of coal below) asked a short exposure time, equipment, production capacity, filling speed, steep slope mining backfill within a week after the presser foot. Second, select coal plants have trucks mixed function, and difficult to wash the coal man who can be directly broken position. precisely because of such favorable conditions, several projects to take the above measures can maximize the recovery of coal, and achieved remarkable results. the last five The pit coal recovery rate of 95 or more, full compliance with state requirements for open pit mining rate. At the same time is essentially the same as the amount of stripping works to increase the amount of coal mining and coal quality by blending the coal into the critical indicators commercial coal, so as to obtain the economic benefits of business is significant. Author Zhang Wang, 37 years old, high-bleed at the nose works' f, 1982 年 life I dry Changchun, Luo land house l, t published many Ge (receiving end date c1997 Year 6 / I) account for one third of the Shanxi coal reserves in Shanxi area 156,000 k, coal-bearing area Diego 65000 km, accounting for 40 area of the province, 94 cities across the county. so far , the whole tower just coal reserves of 927.82 billion pre-t, proven reserves 260 800 000 000 t, accounting for reserves, leave out the l / 3. the connection is now the province coal production 300 000 000 t calculation, only proved reserves can In the first 900 years of mining 800. in proven coal reserves,[link widoczny dla zalogowanych], accounting for 57.7% of coking coal, anthracite, 19.4% and 21% steam coal; mainly distributed in the same too, Ningwu, Western Hills, east of the river, Qin Coal and water are too Yuanqu, flat land,[link widoczny dla zalogowanych], muddy lake,[link widoczny dla zalogowanych], Mount 4 coal-producing land. Shanxi coal were formed in the Paleozoic Carboniferous, Mesozoic, Tertiary and Jurassic second choice, abundant, wide area distribution, coal and stable, the thickness large, generally 2m ~ 5m, the thickness of the optional 41m, and the coal structure is simple. geological structure, hydrogeological conditions are not complicated and relatively shallow. to facilitate mining. (From \ More articles related to topics：
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