高硫煤中黄铁矿浮选抑制试验研究  

Effects of pyrite depressor on high-sulfur coal flotation

作　　者：刘森[1] 吴炎[2] 

机构地区：[1]中国煤炭科工集团北京华宇工程有限公司平顶山分公司,河南平顶山467002 [2]中国煤炭科工集团北京华宇工程有限公司西安分公司,陕西西安710000

出　　处：《洁净煤技术》2015年第3期40-43,共4页Clean Coal Technology

摘　　要：为提高高硫煤的浮选脱硫效率,以新峪选煤厂高硫煤泥为研究对象,分析了高硫煤的粒度组成及硫形态分布,研究煤浆质量浓度、捕收剂、起泡剂和抑制剂种类及用量对高硫煤浮选脱硫效果的影响。结果表明,新峪选煤厂煤泥硫分高达3.57%,属于高硫煤,黄铁矿硫含量较高为2.18%,可通过物理分选方法脱除。当煤浆质量浓度为80 g/L,纳尔科油用量为200 g/t,仲辛醇用量为100 g/t,巯基乙酸用量为400 g/t时,高硫煤浮选效果最好,精煤硫分为2.35%,可燃体回收率为69.23%,脱硫效率最高为24.76%。In order to improve the desulfuration efficiency of high-sulfur coal in flotation process,taking a high-sulfur slime in Xinyu coal preparation plant as research object,the size composition and sulfur forms were analyzed. The influence of coal slurry mass concentration, collector,frother and depressor types and contents on high-sulfur coal flotation was investigated. The results showed that the sulfur content in slime was 3. 57% ,the pyrite content in slime was up to 2. 18% which was difficult to be released,so the desulfuration efficiency was low. When the coal slurry mass concentration was 80 g/ L,the dosage of Nalco oil,octanol and thioglycolic acid was 200 g/ t,100 g/ t,400 g/ t,the flotation achieved the best effects. The sulfur in clean coal was 2. 35% ,the recovery of combustible materials was 69. 23% ,the desulfuration efficiency reached a maximum value of 24. 76% .

关 键 词：高硫煤 浮选脱硫 黄铁矿硫 抑制剂 

分 类 号：TD94[矿业工程—选矿]