The ash yield of upper Permian coal seam in Shuicheng mining area is 14% ~ 28%, and the average sulfur content is 0.7% ~ 2.4% (table 10- 12). There is no coal resource with good clean potential, and there is no high-sulfur coal with poor clean potential. The coal resources in Naluozhai, Xiaohe Mine, Muchonggou, Dingla and Yangmeishu mine fields are clean coal with good potential. Lixin, Bao Hua and Tudiya coalfields are clean coalfields with medium potential. Dachuanbu, Laoyingshan, Shuangchao, Gemudi and Panlong coalfields are clean coals with great potential. Wangjiazhai and Dawan coalfields are high sulfur coal with low cleanliness; Bide exploration area is high mercury coal.
Table 10- 12 Evaluation Results of Coal Resource Cleanliness Grade in Shuicheng Mining Area (wB/ 10-6)
Note: The unit of sulfur content is%.
The contents of arsenic, lead, mercury and cadmium in the upper Permian coal seam in Panxian mining area are 4.26× 10-6, 17.35× 10-6, 0.3 1× 10-6 and 3.02, respectively. Coal resources with good cleaning potential are distributed in Shanjiaoshu and Laowuji coal mines. Coal resources with good cleaning potential are distributed in Tucheng, Xintian, Xinzhai, Walnut Village, Datianba, Yueliangtian, Lujia Village-Dapingdi, Sha Song, Lanniqing, Huoshaopu, Zimujia, Jiazhuqing, Jinzhuping and Shagu. The clean potential of coal resources in Song He and Liming mine fields is medium; Cijia, Luna, Jiucun, Namu-Yangchang, Gushuzhai, Shuitang, Dazhai, Yugu, Ant Cave and Ant Xijingtian are coal resources with poor cleaning potential. There is no clean coal resource with poor potential.
Table 10- 13 Evaluation Results of Coal Resource Cleanliness Grade in Panxian Mining Area
sequential
Except Lijiazhai mine, Dizong mine, Kuzhulin mine and Shanna mine, the sulfur content in each mine/coal mine is 2.1%,2.23% and 2.64% respectively, while the sulfur content in other mines/coal mines is greater than 3.0%, and the arsenic content in coal reaches 60.1.
The sulfur content in zhijin county Hongmei, Pujiaxi, Pujiadong, Xinhua syncline and Baiguozhai syncline in Zhijin mining area is above 3.0%, and the As content in some places reaches 2 167× 10-6, and the Cr content reaches165,438+03.65438+. The coal with Mo content of 63. 1× 10-6 and U content of 49.6× 10-6 all exceeded the maximum limit. These coal resources belong to high sulfur, high arsenic, high chromium, high molybdenum and high uranium coal, and their clean potential is poor. The harmful trace elements in the coal of other mine fields in zhijin county and Nayong County did not exceed the standard, and the cleanliness level of coal resources was determined by its ash and sulfur content (table 10- 14). Coal with good cleaning potential is distributed in Yizhitang syncline and Wangjiaxiaoying Coal Mine in Nayong County. The coal with good cleaning potential is distributed in Babu syncline in zhijin county, Daijiatian Minefield, Jinpen syncline in Nayong County, Gushuzhai syncline, Shaozuo anticline, Zhong Ling Cave and Zhong Ling survey area. Medium clean coal is distributed in Agung syncline survey area and Guanzhai syncline survey area in zhijin county, Mazhongling mine field, Pingshan mine field and supplementary exploration area in Nayong County. The coal with poor cleanliness is distributed in Tangsan syncline, south of Wenjiaba in zhijin county, north of Wenjiaba, Dachantou mine field, south of Agong syncline, Shaopu mine field, Pingqiao syncline, Tiankaichong mine field, Niuchang syncline, Damaochang syncline and Guanzhai syncline, and Jiajiajia anticline in Nayong County.
Table 10- 14 Evaluation Results of Coal Resource Cleanliness Grade in zhina Mining Area
sequential
The ash content of coal seam in Qishe survey area of Huangnihe anticline in Xingyi mining area is 8.58%, the sulfur content is 65,438 0.34%, the trace elements content is within the limit, and the cleanliness level belongs to Grade II (good cleanliness potential). The ash content of coal seam in Maling investigation area of Nasheng anticline is 24. 19%, the sulfur content is 5.84%, and the arsenic content is 434.6 mg/kg, which belongs to high sulfur and high arsenic coal with poor cleaning potential.
The ash yield of upper Permian coal seam in Xuanwei coalfield is 15.54% ~ 34.8%, and the average sulfur content is 0. 13% ~ 0.4%. According to the agreement of coal resource cleanliness grade evaluation system, because there is no trace element measurement data, the statistical average is taken. The coal resources in this area are clean and have great potential.
The ash yield of upper Permian coal seam in Hong En coalfield is 16.02% ~ 25.85%, the sulfur content is generally 0.22% ~ 0.46%, and the individual points are10/%. According to the agreement, when there is no trace element determination data, the statistical average is taken. Most of the coal resources in this area belong to coal with good clean potential, and a small amount belongs to coal with good clean potential.
The ash content of upper Permian coal seam in Laochang mining area of Guishan coalfield is 14.65% ~ 19.75%, the sulfur content is 1.36% ~ 2.08%, and the arsenic content in local coal reaches1504×10-. The ash yield of upper Permian coal seam in Guishan mining area is 13.92%, and the sulfur content is 0.28% ~ 2. 19%. Although there is no trace element determination data, it is still considered that the coal resources in 18 mining area have good cleaning potential, and 19 mining area is a coal with good cleaning potential. The ash content of coal seam in Shanxincun mine field of Zhuan mining area is 65438 05%, and the sulfur content is 65438 0.5%. Although there is no trace element determination data, it still belongs to coal with good clean potential. The ash content of coal seam in cross-column coal mine is 29.6%, and the sulfur content is 3.02%. Although there is no trace element determination data, it is still a coal resource with poor clean potential.