摘要
通过浮选试验、动电位和红外光谱测定,考察了以季铵盐QAX224为捕收剂,淀粉为抑制剂,一水硬铝石与高岭石反浮选分离的作用效果和机理。浮选试验表明,在pH=8～9的范围内,随着抑制剂用量的增加,一水硬铝石几乎全部被抑制,而高岭石则可出现轻微的活化作用。将一水硬铝石和高岭石的人工混合矿反浮选试验后,铝硅比提高到30.79。机理分析表明,捕收剂和抑制剂与高龄石除了物理作用,还出现了化学键合,一水硬铝石与捕收剂主要为静电吸附,与淀粉主要是化学吸附。
The effect and mechanism of quaternary ammonium slat collector and starch depressor in the separation of diaspore from kaolinite by reverse flotation was investigated by flotation test, electrokinetic potential and infrared spectrum. The test showed that, at pH = 8 - 9 ,with the dosage increase of depressor, nearly all diaspore could be depressed while kaolinite was slightly activated. The A/S of the artificial mixture of diaspore and kaolinite could be increased to 30.79 by the reverse flotation test. The analysis of the mechanism shows that, there is also a chemical bonding in addition to physical action between the collector and depressor and kaolinite, and there is mainly static adsorption between and quaternary ammonium and chemical adsorption between diaspore and starch.
出处
《金属矿山》
CAS
北大核心
2009年第1期55-58,73,共5页
Metal Mine
基金
国家重点基础研究发展规划项目(编号:2005CB623701)
关键词
季铵盐
反浮选
一水硬铝石
高岭石
Quaternary ammonium salt, Inverse flotation, Diaspore, Kaolinite
