马达加斯加鳞片石墨精矿提纯
Purification of Flake Graphite in a Certain Area of Madagascar
翟振民 1邱杨率 2张凌燕 2毛振飞 1杜韶川 1张宇1
作者信息
- 1. 武汉理工大学资源与环境工程学院,湖北 武汉 430070
- 2. 武汉理工大学资源与环境工程学院,湖北 武汉 430070;矿物资源加工与环境湖北省重点实验室,湖北 武汉 430070
- 折叠
摘要
这是一篇矿物加工工程领域的论文.实验以马达加斯加某地鳞片石墨浮选精矿为原料进行氢氟酸法提纯.提纯原料品位为 94.96%,通过单因素条件实验的探究,确立了盐酸与氢氟酸组成的混酸与石墨液固比为 3.5 mL/g,HF体积分数 40%,60℃水浴反应 8 h可将石墨品位提纯至 99.98%的提纯工艺.针对细粒级石墨提纯效果差的问题,提纯前对石墨进行筛分分级.对细粒级石墨进行超声波震荡预处理,超声波震荡 60 min后进行酸浸提纯.提纯后细粒级石墨固定碳含量≥99.92%.
Abstract
This is an article in the field of mineral processing engineering.The flake graphite flotation concentrate in Madagascar was purified by hydrofluoric acid method.The grade of raw material flake graphite was 94.96%.Based on the single-factor condition tests,the purification process was established that the mixture of hydrochloric acid and hydrofluoric acid was 3.5 mL/g,HF volume fraction was 40%,and the graphite grade could be purified to 99.98%by water bath reaction at 60℃for 8 h.In view of the poor purification effect of fine graphite,the graphite was screened and classification before purification.The fine graphite class was subjected to ultrasonic shock pretreatment test,and acid leaching was carried out for purification after 60 min of ultrasonic shock.After purification,the fixed carbon content of fine graphite class was≥99.92%.
关键词
矿物加工工程/石墨提纯/氢氟酸法/筛分分级/超声震荡预处理Key words
Mineral processing engineering/Graphite purification/Hydrofluoric acid method/Screening classification/Ultrasonic shock pretreatment引用本文复制引用
出版年
2024
国家科技期刊平台
NSTL
万方数据