难浸金精矿细菌预氧化过程中降低酸耗的研究  

Study on Decreasing Acid Consumption in Biooxidation Treatment of A Refractory Gold Ore

作　　者：熊英 柏全金 林滨兰 杨红霞 

机构地区：[1]陕西省地质矿产实验研究所,陕西西安710054

出　　处：《矿产综合利用》2004年第1期3-7,共5页Multipurpose Utilization of Mineral Resources

摘　　要：对含碱性脉石矿物大于30%的陕西煎茶岭浮选精矿,采用菌液返回;配入黄铁矿含量相对较高的硫化物金精矿;提高氧化亚铁硫杆菌硫氧化酶活性等手段,可不同程度地降低细菌预氧化过程中的耗酸量,其中配矿浸出是最为有效的措施。按1∶1的比例配入所选定的硫化物金精矿,可将耗酸量从未配矿前的253kg/t降为46kg/t,扩大了细菌预氧化工艺处理硫化物金矿的矿石类型,具有实际应用价值。The decrease of acid consumption in biooxidation process of flotation gold concentrate obtained from a refractory gold ore of Jianchaling Gold Mine with basic gangue minerals over 30% can be performed through circulating oxidizing bacterial liquor,addition of gold sulfide concentrate with high content of pyrite and increasing enzyme activity of Thiobacillus ferroxidans (T.f.) etc.,in which leaching by addition of fold concentrate is the best effective.The acid consumption can be decreased from 253kg/t to 46kg/t when compounding gold concentrate is 50%.

关 键 词：难处理金精矿 碱性脉石矿物 细菌浸出 耗酸量 

分 类 号：TF111.31[冶金工程—冶金物理化学]