王进;
WANG Jin;Shuguang Mining Group Co. ,Ltd.;

• 1:山西汾西曙光煤业有限责任公司

摘要(Abstract)：

通过筛分试验和浮沉试验分析了曙光选煤厂粗煤泥性质,说明原煤中粗粒级含量较高,+0.250 mm产率达到52.25%,应选择适宜的粗煤泥分选设备对其分选回收;当精煤灰分≤11.0%时,曙光选煤厂粗煤泥属中等可选煤。针对曙光选煤厂重介旋流器分选精度低,介耗偏高等问题,以新型两段粗煤泥分选旋流器为核心设备,构建了粗煤泥分选体系,形成预先脱泥、粗煤泥单独分选与常规重介、浮选相衔接的工艺流程,完善了分选工艺。改造后,选煤厂原煤处理量由235 t/h提至285t/h,年处理原煤能力由120万t提至150万t;介耗由改造前的2.4 kg/t降至2.0 kg/t。每年增加精煤销售额1.14亿元,节省介质费用75万元,节省电费11.25万元。改造后曙光选煤厂工艺流程更加合理,生产调节更具灵活性,产品质量稳步提升,实现了降低介耗,增加原煤处理量的目标。
Analyse the coarse coal slime natures in Shuguang coal preparation plant through screening test and float-and-sink analysis.The results show that coarse grained content in feed coal is high and the yield of + 0. 250 mm size fraction reach up to 52. 25 percent.These coarse slime should be disposed with appropriate separation equipment. Requirement of concentrate ash is below11. 0 percent,coarse coal slime is medium washability. To improve the accuracy of dense medium cyclone and reduce medium consumption,build a system for coarse coal separation alone taking new two-stage separating cyclone with muti-products as core device. Build the formation of coarse coal slime separation system,the preliminary desliming,coarse coal slime separation and conventional medium alone,flotation of corresponding technological process,perfect the sorting process,which perfect the separating technology. After modification,the raw coal treatment capacity increase from 235 t / h to 285 t / h,so the total treatment capacity each year increase from 1. 2 × 106tons to 1. 5 × 106tons.The medium consumption decrease from 2. 4 kg / t to 2. 0 kg / t. The plant saves medium cost 7. 5 × 105yuan,energy cost 11. 25 × 105yuan,increase clean coal sales volume 1. 14 × 108yuan per year. After transformation,the technological process becomes more perfect and flexible,the product quality steadily improve,the medium consumption decrease.

关键词(KeyWords)： 分选旋流器;粗煤泥;可选性;介耗;工艺流程
separating cyclone;coarse slime;washability;medium consumption;technological process

Abstract:

Keywords:

基金项目(Foundation):

作者(Authors): 王进;
WANG Jin;Shuguang Mining Group Co. ,Ltd.;

DOI: 10.13226/j.issn.1006-6772.2014.02.003

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