含硫物质对大洋多金属结核金属化还原的影响  

Effect of Sulfur-bearing Substance on Metallic Reduction of Oceanic Polymetallic Nodules

作　　者：赵峰[1] 蒋训雄[1] 

机构地区：[1]北京矿冶研究总院,北京100160

出　　处：《有色金属（冶炼部分）》2014年第1期15-18,32,共5页Nonferrous Metals（Extractive Metallurgy)

摘　　要：在还原温度1 100℃、还原时间2.5h、无烟煤配入7%、添加剂4%的条件下,研究不同含硫物质的加入对大洋多金属结核金属化还原—磁选分离效果的影响。结果表明,含硫物质的加入在一定程度上提高了精矿产率和有价金属回收率,但是磁选精矿品位有所下降。通过扫描电镜观察,发现精矿中大部分硫形成铁锰硫化物与合金颗粒连生在一起。The effects of addition of sulfur-bearing substance on metallic reduction-magnetic separation of oceanic polymetallic nodules were studied under the conditions including reduction temperature of 1 100 ℃, reduction time of 2.5 h, anthracite dosage of 7%, and additive of 4%. The results show that grade of magnetic concentrates declines though sulfur-bearing substance is effective to improve rate of magnetic concentrate and recovery of valuable metals to some extent. With help of scanning electron microscope, most of sulfur in concentrate is found in form of iron manganese sulfide with alloy particles.

关 键 词：大洋多金属结核 含硫物质 金属化还原 磁选分离 

分 类 号：TF803.11[冶金工程—有色金属冶金]