回水中无机离子对硅钙质磷矿石正反浮选的影响  

Influence of Inorganic Ions in Return Water on Direct and Reverse Flotation of Silicon Calcium Collophanite

作　　者：耿超 程伟[1,2,3] 刘志红 GENG Chao;CHENG Wei;LIU Zhi-hong(Mining College,Guizhou University,Guiyang 550025,Guizhou,China;Guizhou Province Key Laboratory of Non-metallic Mineral Resources Comprehensive Utilization,Guiyang 550025,Guizhou,China;National&Local Joint Laboratory of Engineering for Effective Utilization of Regional Mineral Resources from Karst Areas,Guiyang 550025,Guizhou,China)

机构地区：[1]贵州大学矿业学院,贵州贵阳550025 [2]贵州省非金属矿产资源综合利用重点实验室,贵州贵阳550025 [3]喀斯特地区优势矿产资源高效利用国家地方联合工程实验室,贵州贵阳550025

出　　处：《矿冶工程》2020年第4期38-41,共4页Mining and Metallurgical Engineering

基　　金：国家科技支撑计划项目(2013BAC15B01)。

摘　　要：以贵州某硅钙质胶磷矿为研究对象,通过往矿浆中添加不同浓度的Ca^2+、Mg^2+、SO4^2-、PO4^3-、F^-等影响离子,考察了无机离子对磷矿正反浮选的影响,结果表明:Ca^2+和Mg^2+会沉淀捕收剂,使精矿P2O5品位和回收率大幅度降低;碱性条件下PO4^3-会抑制磷矿正浮选;酸性条件下SO4^2-易与Ca^2+反应生成硫酸钙沉淀附着在磷矿表面,影响磷矿反浮选;F^-对磷矿正反浮选影响较小。研究成果可为磷矿正反浮选废水的处理回用提供指导。The processing technology for the silicon calcium collophanite from Guizhou was studied.To investigate the effects of inorganic ions on direct and reverse flotation of this phosphate ore,Ca^2+,Mg^2+,SO4^2-,PO4^3-and F^-of varied concentration was added into the pulp.The results show that Ca^2+and Mg^2+can remarkably reduce the P2O5 grade and recovery of the concentrate as they can precipitate the collector.In alkaline pulp,PO4^3-may inhibit the direct flotation of collophanite.In acidic pulp,SO4^2-may easily react with Ca^2+to form sulfuric acid,which may adhere onto collophanite and affect its reverse flotation.F-has little effect on the direct and reverse flotation processes.The study provides guidance for the treatment and recycling of wastewater from direct and reverse flotation processes of phosphate rock.

关 键 词：磷矿 选矿废水 硅钙质磷矿石 正反浮选 无机离子 回水 

分 类 号：TD923[矿业工程—选矿]