The Probability Sizing Screen (PSS) developed by China University of Mining and Technology has been used since 1980 for the screening of moist fine raw coal. More than 600PSS's have been installed in Chinese coal ...The Probability Sizing Screen (PSS) developed by China University of Mining and Technology has been used since 1980 for the screening of moist fine raw coal. More than 600PSS's have been installed in Chinese coal mines, bringing about economic benefits to both coal producers and consumers in terms of reduced energy saving, transpertation cost reduction,and environmental protection. While the PSS treats some high-moisture fine raw coal, the mesh apertures may be blinded by the fine particles stuck on the mesh wire of the screen. Recently, the authors have developed the Piano-wire Probability Screen, a new screen which screens moist fine raw coal. This screen assimilates advantages of PSS, having large deck inclination, large aperture and multideck. In addition the new screen uses piano-wire decks which have a new structure, great open area, and no blinding. The results of sizing fine moist raw coal in Lugou Coal Mine, Henan Province,show that the Piano-wire Probability Screen has a large capacity and high efficiency and is an efficient screen for separating moist raw coal with diameter of 6mm. This paper describes the results of fundamental studies on the Piano-wire Probability Screen. and also includes data from pilot-plant studies.展开更多
为提高宋新庄煤矿选煤厂选煤效率，分析了选煤厂入选原煤性质，根据产品用户对煤质的要求，确定选煤厂产品结构。以产品结构多样化、灵活性为目的，分析了选煤厂分选粒度及块煤、末煤的分选工艺。结果表明，宋新庄煤矿生产原煤为不黏煤...为提高宋新庄煤矿选煤厂选煤效率，分析了选煤厂入选原煤性质，根据产品用户对煤质的要求，确定选煤厂产品结构。以产品结构多样化、灵活性为目的，分析了选煤厂分选粒度及块煤、末煤的分选工艺。结果表明，宋新庄煤矿生产原煤为不黏煤，属低灰煤，矸石易泥化。块煤（200～25 mm）采用重介质浅槽分选机分选，末煤（〈25 mm）采用无压给料三产品重介质旋流器分选，并留有弛张筛进行6 mm 干法筛分，〈6 mm 粉煤不分选的旁路。宋新庄煤矿选煤厂可生产优质的大块煤（200～50 mm）、中块煤（50～25 mm）、精煤（〈25 mm）、混煤（〈50 mm 或〈25 mm）等产品，供应煤气化原料用煤、动力发电用煤、民用煤等。展开更多
基金This project is supported by the special fund of Chinese institutions of higher learning
文摘The Probability Sizing Screen (PSS) developed by China University of Mining and Technology has been used since 1980 for the screening of moist fine raw coal. More than 600PSS's have been installed in Chinese coal mines, bringing about economic benefits to both coal producers and consumers in terms of reduced energy saving, transpertation cost reduction,and environmental protection. While the PSS treats some high-moisture fine raw coal, the mesh apertures may be blinded by the fine particles stuck on the mesh wire of the screen. Recently, the authors have developed the Piano-wire Probability Screen, a new screen which screens moist fine raw coal. This screen assimilates advantages of PSS, having large deck inclination, large aperture and multideck. In addition the new screen uses piano-wire decks which have a new structure, great open area, and no blinding. The results of sizing fine moist raw coal in Lugou Coal Mine, Henan Province,show that the Piano-wire Probability Screen has a large capacity and high efficiency and is an efficient screen for separating moist raw coal with diameter of 6mm. This paper describes the results of fundamental studies on the Piano-wire Probability Screen. and also includes data from pilot-plant studies.
文摘为提高宋新庄煤矿选煤厂选煤效率，分析了选煤厂入选原煤性质，根据产品用户对煤质的要求，确定选煤厂产品结构。以产品结构多样化、灵活性为目的，分析了选煤厂分选粒度及块煤、末煤的分选工艺。结果表明，宋新庄煤矿生产原煤为不黏煤，属低灰煤，矸石易泥化。块煤（200～25 mm）采用重介质浅槽分选机分选，末煤（〈25 mm）采用无压给料三产品重介质旋流器分选，并留有弛张筛进行6 mm 干法筛分，〈6 mm 粉煤不分选的旁路。宋新庄煤矿选煤厂可生产优质的大块煤（200～50 mm）、中块煤（50～25 mm）、精煤（〈25 mm）、混煤（〈50 mm 或〈25 mm）等产品，供应煤气化原料用煤、动力发电用煤、民用煤等。
