钛白粉生产酸性废水对磷矿石反浮选实验研究  

Experimental Study on Reverse Flotation of Phosphate Rock with Acidic Wastewater from Titanium Dioxide Production

作　　者：孙小祥 方婷婷 石开仪 熊奥林 潘洪刚 赵航星 SUN Xiaoxiang;FANG Tingting;SHI Kaiyi;XIONG Aolin;PAN Honggang;ZHAO Hangxing(College of Chemistry and Chemical Engineering,Qiannan Normal University for Nationalities,Duyun 558000,China)

机构地区：[1]黔南民族师范学院化学化工学院,贵州都匀558000

出　　处：《河南化工》2024年第3期1-4,共4页Henan Chemical Industry

基　　金：贵州省教育厅青年科技人才成长项目(黔教合KY字[2017]352);贵州省大学生创新创业项目(S202210670075);黔南民族师范学院支持引进高层次人才研究专项项目(2021qnsyrc10);贵州省高校学校“磷硫钛”资源综合利用工程研究中心(黔教技[2023]046)。

摘　　要：钛白粉生产过程中产生大量酸性废水(<5%),为解决中和处理造成大量钛石膏堆积问题,在分析磷矿石特性的基础上进行浮选实验研究。混合捕收剂浮选效果优于单一FQ捕收剂、油酸钠、十二胺,当FQ捕收剂用量为10 L/t,油酸钠为7.5 kg/t时,精矿品位为29.18%,分别比单一捕收剂高5.35和2.46个百分点,回收率比单一用油酸钠时高10.15个百分点。当5%酸用量为3.442 kg/t时,产率和回收率分别比用稀硫酸高5.79和2.37个百分点。本研究提供了一条钛白粉酸性废水利用新途径。A large amount of acidic wastewater(<5%)is producted in the process of titanium dioxide production.In order to solve the problem of a large amount of titanium gypsum accumulation caused by neutralization treatment,flotation experiments are carried out on the basis of analyzing the characteristics of phosphate rock.The flotation effect of the mixed collector is better than that of a single FQ collector,sodium oleate,and dodecylamine.When the dosage of FQ collector is 10 L/t,sodium oleate is 7.5 kg/t,the concentrate grade is 29.18%.It is 5.35 and 2.46 percentage points higher than that of a single collector,respectively,and the recovery rate is 10.15 percentage points higher than that of a single sodium oleate.When the acid dosage is 3.442 kg/t,the yield and recovery rate are 5.79 and 2.37 percentage points higher than those using dilute sulfuric acid,respectively.This study provides a new approach for the utilization of acidic wastewater from titanium dioxide powder.

关 键 词：磷矿石 钛白粉 酸性废水 浮选 

分 类 号：TQ028[化学工程] X78[环境科学与工程—环境工程]