赵固二矿选煤厂煤泥水处理系统的优化改造  

Transformation of slime water processing system in Zhaogu No.2 coal preparation plant

作　　者：任建民[1] 刘磊[2] 樊合高[1] 

机构地区：[1]河南煤业化工集团有限责任公司焦煤公司,河南焦作454150 [2]中国矿业大学化工学院,江苏徐州221008

出　　处：《洁净煤技术》2012年第3期10-12,共3页Clean Coal Technology

基　　金：国家自然科学基金资助项目(50974120)

摘　　要：针对赵固二矿选煤厂生产中存在的浮选作业无法正常进行、压滤机能力不足、洗水难以闭路循环等问题。综合考虑药剂添加量、沉降速度、压缩高度及上清液澄清度等因素,通过煤泥水絮凝沉降试验,发现质量分数为1.0%的凝聚剂TLT8840和质量分数为0.1%的絮凝剂TLT8610添加量分别为0.20 mL和0.15 mL时煤泥沉降浓缩效果最好,同时对药剂制备系统、输送设备及加药点分别进行了优化和改造。煤泥水系统优化改造后,选煤厂真正实现了洗水闭路循环,降低了生产成本和用水量,彻底解决了煤泥水对环境的污染问题;煤泥水处理药剂成本由原来的0.44元/t降至现在的0.31元/t,每年可节省药剂成本约39万元,节省电费约65万元;优化改造后,选煤厂真正实现了全入选,仅多产出的浮选精煤,每年就可多收益约720万元。There are some problems in the production process of Zhaogu No. 2 coal preparation plant, such as unstable flotation process, inadequate throughput capacity of pressure filter and defective closed water circuit and the like. Considering additive amount of reagents, settling velocity, compression altitude and clarification degree of supernatant, design slime flocculation and setting experiments. The results show that the concentrated effect is the best while the amount of coagulant TLT8840, whose mass fraction is 1.0 percent, is 0. 20 mL, the amount of flocculant TLT8610, whose mass fraction is 0. 1 percent, is 0. 15 mL. Also optimize and transform reagents preparation system, conveying equipments and dosing points. After transformation, the closed water circuit works well. The production cost and water consumption decrease, solve the pollution problem completely. The reagents cost decreases from 0. 44 yuan per ton to 0. 31 yuan per ton which means the plant would achieve about 390 thousand yuan in reagent cost saving, about 650 thousand yuan in electricity cost saving annually. Thanks to the modification, the coal preparation plant truly realizes the whole-size fraction separation. The increased clean coal annually worthes as much as 7.2 million yuan.

关 键 词：煤泥水系统 凝聚剂 絮凝剂 加药点 优化改造 

分 类 号：TD946.2[矿业工程—选矿]