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新一选煤厂为适应煤炭产品市场的要求,提高企业经济效益,在原生产系统和选煤厂土建工程基础上设计改扩建一座年处理能力1.8万 t 的选煤厂。2005年试运行,2006年7月交工正式投产,产品为市场需要的8级冶炼精煤和洗混煤。1 生产工艺该厂入选原料煤特点为块煤含量少,末煤和煤泥含量大。采用两段两产品重介旋流器+螺旋分选机+浮选联合工艺流程。选前脱泥,其中50～1mm 级采用两段两产品重介旋流器分选,1～0.15 mm 级采用螺旋分选机分选,<0.15 mm 级采用浮选。因其工艺环节衔接合理,相对于重介旋流器+浮选为特征的两工艺流程,从根本上实现重介分选的优化,提高了各相关环节的分选效果和稳定性。粗煤泥部分(1～0.15 mm)由于可选性好,分选密度高,选用螺旋分选机分选。
In order to meet the requirements of the coal product market, Xinyi Coal Preparation Plant will improve the economic benefits of the enterprise and design and expand a 18,000 t coal preparation plant on the basis of the original production system and the civil works of the coal preparation plant. 2005 trial operation, in July 2006 formally put into operation, the product is the market needs 8 grade smelting coal and coal washing. 1 production process The plant selected raw coal characteristics of lump coal content is less, the end of coal and slime content. Using two sections of two products Dense Medium Cyclone + spiral separator + flotation process. Demolishing before the election, of which 50 ~ 1mm grade using two product Dense Medium cyclone sorting, 1 ~ 0.15 mm class using spiral sorting machine sorting, <0.15 mm class flotation. Because of its process connection is reasonable, relative to the Dense Medium cyclone + flotation for the characteristics of the two processes, to fundamentally achieve the optimization of Dense Separation and improve the relevant aspects of the separation effect and stability. Thick slime part (1 ~ 0.15 mm) due to good selectivity, high sorting density, the selection of spiral sorting machine.