联合使用碱和氧化剂分离毒砂与黄铁矿  

SEPARATION OF ARSENOPYRITE FROM PYRITE BY THE COMBINED USE OF ALKALIS AND OXIDANTS

作　　者：李广明[1] 钱鑫[2] 张洪恩[1] 

机构地区：[1]东北工学院 [2]昆明工学院

出　　处：《矿冶工程》1989年第4期30-34,共5页Mining and Metallurgical Engineering

摘　　要：本文提出了碱和氧化剂联合使用的方法分离毒砂与黄铁矿,并对其作用机理进行了研究。结果表明,氧化剂氧化后的硫化矿物,表面特性及可浮性发生了很大的变化,在碳酸钠作用下,可以实现毒砂和黄铁矿的分离。这主要是由于氧化剂选择性氧化抑制毒砂的同时,碱选择性地阻碍捕收剂在毒砂表面的吸附,并清洗黄铁矿表面因氧化而生成的不利于浮选的氧化产物。在该条件下,矿物表面的氧化产物和无碱时相同。The separation of arsenopyrite from pyrity is conducted by the combined use of alkalis and oxidants, and their separation mechanism is studied. The results obtained show that it is possible to separate arsenopyrite from pyrite under the influence of sodium carbonate due to great changes in the surface characteristics and flotability of sulphide minerals oxidized by oxidants. This is attributed to the fact that while oxidant depresses selectivey arsenopyrite by oxidation, alkali hinders the adsorption of collectors on the surface of arsenopyrite and cleans oxidation products (detrimental to the flotation) on the surface of pyrite. The oxidation products formed on the mineral surfaces under this condition are as the same as without alkalis.

关 键 词：毒砂 黄铁矿 碱 氧化剂 分离 

分 类 号：TD952[矿业工程—选矿]