邯郸洗选厂选煤工艺的发展及应用

Development and application of technologically upgraded coal cleaning processes at Handan Coal Washery

邯郸洗选厂自1959年12月投产,60年以来经历了三次大的工艺改造,工艺最初为跳汰主再洗+煤泥浓缩浮选,1998年改为跳汰初选+重介旋流器再选+煤泥浓缩浮选,2004年浮选工艺由浓缩浮选改为浓缩分级浮选,即更细粒级<0.125 mm的煤泥用浮选柱分选,2011年再次改造为脱泥无压三产品重介质旋流器+CSS粗煤泥分选+煤泥分级浮选;每次改造都是根据当时的时代背景、市场情况、技术状况等作出必要性调研分析后进行的,工艺改造成功后,通过关键参数对比分析,展现出邯郸洗选厂对新工艺新技术的不断追求,再现了我国洗煤技术的不断发展历程的一个缩影。

Over the past 60 years since its commissioning in December 1959, Handan Coal Washer has undergone 3 times of major renovation of its coal cleaning processes. Initially, the washery used Jigging process for primary washing and rewashing operations and fine coal thickening flotation process. In 1998 it switched to the use of jig for primary washing and heavy medium cyclone for rewashing with the flotation system remaining unchanged. In 2004, the thickening flotation system changed to thickening and classifying flotation process, and the <0.125 mm fine coal was treated with flotation column. In 2011, the further upgraded processes as follows were applied: use of gravity-fed 3-product H.M. cyclone to treat deslimed coal. Separation of coarse slime with CSS and classifying flotation of fine coal. The renovation work was made each time in line with the then background of the times, market situation and technical condition based on result of analysis of necessity. Upon successfully completion of the renovation work each time, comparative analysis of key parameters were made. The technical upgrading work successively made well demonstrate the unswerving effort of the washery to seek new technologies and new processes, and can also serve as a epitome of the course of incessant development of China′s coal preparation technologies.