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.
出处
《有色金属（冶炼部分）》
CAS
北大核心
2014年第1期15-18,32,共5页
Nonferrous Metals（Extractive Metallurgy)
关键词
大洋多金属结核
含硫物质
金属化还原
磁选分离
oceanic polymetallic nodules
sulfur-bearing substance
metallic reduction
magnetic separation
