摘要
本文针对某高磷铁精矿进行降磷试验研究,采用了细磨-多次磁选,反浮选,化学浸出等多种方法降磷。研究结果表明:该铁精矿采用常规分选法难以获得符合冶炼要求的产品,而化学浸出法可以有效降磷,但碱浸成本较高,酸浸降磷则较为经济可行。盐酸、硝酸、硫酸浸出均可获得磷含量合格铁精矿,但硝酸价格较高,因此采用盐酸和硫酸为浸出剂。在适当条件下,硫酸和盐酸浸出均可获得铁品位60.5%以上、磷含量0.18%的铁精矿产品。
In this paper,tests on dephosphorization of a high phosphorus-bearing iron concentrate were carried out by using fine grinding（multistep magnetic separation,reverse flotation and chemical leaching.It is shown that the two conventional separation methods are not effective whereas chemical leaching is effective for removal of phosphorus,and acid leaching is more cost-effective and feasible than alkali leaching.Qualified iron concentrate can be produced by leaching with HCl,H2SO4 or HNO3,but since HNO3 is more expensive than HCl and H2SO4,the latter acids are adopted as the leachants.Under the proper conditions,iron concentrate containing Fe higher than 60.5% with 0.18% P can be obtained by leaching with HCl and H2SO4.
出处
《中国矿业》
北大核心
2011年第1期82-86,共5页
China Mining Magazine
关键词
高磷铁精矿
化学浸出
酸浸
降磷.
High phosphorus-bearing iron concentrate
chemical leaching
acid leaching
dephosphorization
