化工进展2019，Vol.38Issue(3)：1218-1225,8.DOI:10.16085/j.issn.1000-6613.2018-1055
氧化铁浸染型石英中性正浮选制备低铁石英砂
Preparation of low iron quartz by neutral direct flotation from iron oxide disseminated quartz
张乾伟 1石倩倩 1吴建新 1李佩悦 1常志达1
作者信息
- 1. 中建材蚌埠玻璃工业设计研究院有限公司, 浮法玻璃新技术国家重点实验室矿产资源所, 安徽 蚌埠 233000
- 折叠
摘要
Abstract
Iron oxide content is the main factor affecting the application of quartz in different fields.Because of the existing form, associated state, disseminated degree and particle size distribution of iron oxide disseminated quartz, conventional scrubbing, high-intensity electromagnetic and acid reverse flotation may not effectively decrease the content of ferric oxide. Using inhibitor to inhibiting iron-bearing minerals, ferric oxide content in quartz can be reduced by certain collector and foaming agent under the neutral condition. Results showed that under the combined action of synthetic organic inhibitor CTSS, amphoteric collector and foaming agent ZD-3, ferric oxide content in quartz could be reduced from 130-150 mg/kg to 60-100 mg/kg, which meets the quality requirements for ultra white photovoltaic glass. Its upper limit of quartz grain for neutral flotation was 0.6 mm, and better with ≤0.5 mm, ferric oxide content in quartz purified by neutral flotation is lower than its purified by acid flotation aiming at the separation of iron aluminosilicate minerals and iron oxide disseminated in quartz. Thermodynamic calculations showed that at the chemically bonding between starch based inhibitor CTSS and ferric oxide may be natural at pH≥5.5, its standard Gibbs free energy change is negative, priority adsorption of CTSS is one of the keys to achieve quartz purification by neutral flotation.关键词
石英/氧化铁/降铁/浮选/中性Key words
quartz/ferric oxide/de-ironing/flotation/neutral solution分类
矿业与冶金引用本文复制引用
张乾伟,石倩倩,吴建新,李佩悦,常志达..氧化铁浸染型石英中性正浮选制备低铁石英砂[J].化工进展,2019,38(3):1218-1225,8.
