硫铁矿烧渣微生物脱硫试验研究  

Experimental Study on Microbial Desulfurization of Pyrite Cinder

作　　者：周文博[1] 邹平[1] 孙珮石[1] 

机构地区：[1]云南大学工程技术研究院,云南昆明650091

出　　处：《湿法冶金》2013年第4期270-273,共4页Hydrometallurgy of China

摘　　要：研究了从高硫硫铁矿烧渣中微生物脱硫,考察了培养基种类、矿浆固液质量体积比、pH、细菌接种量、表面活性剂、温度及粒度等因素对微生物脱硫的影响。试验结果表明:在菌种接种量3%、矿浆pH=1.5、温度30℃条件下对固液质量体积比3∶10的硫酸渣矿浆进行脱硫,72h内,烧渣的硫质量分数由1.78%降至0.28%,脱硫率达86.02%,铁品位由53.78%提高到59.56%;脱硫后的烧渣符合铁精矿要求。The mixed culture of acidophilic bacteria was used to remove sulfur from pyrite cinder. The effects of different culture mediums, solid-liquid ratio, pH, inoculum volume, surfaetant usage, temperature and particle size on the desulfurization rate were examined by shake flask experiments. The results indicated that the optimal conditions of desulfurization were solid-liquid ratio of 3 ： 10, inoculation amount of 3% ,pH of 1.5,rotation speed of 180 r/min and temperature of 25 ℃. After 72 hours leaching,the total sulfur content in the pyrite cinder was reduced significantly from 1.78% to 0.28% with a desulfurization rate of 86.02% ,and iron content was enriched effectively from 53.78% to 59.56%. The desulfurization slag meet the requirements of ore concentrate for steelmaking.

关 键 词：生物氧化 嗜酸微生物 硫酸渣 脱硫 铁精矿 

分 类 号：TF18[冶金工程—冶金物理化学]