摘要
分析了新巨龙选煤厂主要存在药剂与煤泥作用时间短、浮选药剂捕收性能差和浮选加药不可视等问题。针对以上问题，通过增加加药设施和加药点，延长药剂与煤泥的作用时间；根据煤泥性质，选择合适的捕收剂；增加可视化浮选加药槽，实现药剂添加可视化等措施对选煤厂进行改造。改造完成后，入浮煤泥和浮选药剂得到充分混合，提高了入浮煤泥的矿化效果；浮选加药装置的可视化便于浮选司机根据浮选效果及时调整药剂添加量。选煤厂浮选药耗由原来的0．34kg／t降至0．27kg／t，浮选精煤抽出率由68％提高至76％，有时甚至达到80％以上；捕收剂和起泡剂的质量比由原来的12：1提高至（18～20）：1；浮选精煤泡沫易碎、浓度高，加压过滤机排料周期维持在100S左右；节省药剂费用275．7万元。
There were lots of problems in Xinjulong coal preparation plant. The contact time between flotation agent and slime was short, the collecting performance of flotation agent was poor, the dosing process was uncontrollable. Transform the flotation system by adding dosing equipments and points, lengthening the contact time between agent and slime, adopting appropriate collector based on the slime properties, adding visual dosing tank. After transformation, the flotation agent decrease from 0.34 kg/t to 0.27 kg/t, clean coal extraction rate increase from 68 percent to 76 percent,sometimes even over 80 percent. The mass ratio of collector and frother increase from 12：1 to （ 18 -20）：1. The concentration of clean coal is high, the stability of foam is bad. The discharging period of pressure filter maintains about 100 s. The coal preparation plant saves agent cost 2. 757x106 yuan.
出处
《洁净煤技术》
CAS
2013年第5期14-16,共3页
Clean Coal Technology
关键词
浮选药剂
捕收剂
起泡剂
煤泥
精煤
flotation agent
collector
frother
slime
clean coal
