新疆某铍精矿浸出工艺研究

新疆某铍精矿粒度为0.074~0 mm,铍含量为5.60%。为了高效提取该铍精矿中的铍,对硫酸加热预处理—搅拌浸出工艺中浓硫酸的用量、预处理温度、搅拌浸出过程的液固比和浸出时间进行研究。结果表明:在铍精矿与浓硫酸质量比为1∶1.5、预处理温度为180℃、搅拌浸出的液固比为2∶1、浸出时间为4 h的情况下,氧化铍浸出率达到97%,该工艺的浸出效果良好;浓硫酸的用量、预处理温度、搅拌浸出过程的液固比和浸出时间对氧化铍浸出率都有显著的影响,其中以浸出温度的影响最为显著。通过此工艺来浸出铍精矿不仅能大大降低能耗,还能有效节约企业成本,为铍精矿的浸出提供借鉴。

Study on Leaching Process of a Beryllium Concentrate from Xinjiang

In order to efficiently extract beryllium in a beryllium concentrate，Xinjiang province，with particle size from 0.074 to 0 mm，beryllium content of 5.60%，the dosage of concentrated sulfuric acid，pretreatment temperature，the ratio of liquid to solid，and leaching time in process of heating sulfuric acid pretreatment-agitation leaching are studied.The result show that leaching rate of beryllium oxide reaches 97% with mass ratio of beryllium concentrate to concentrated sulfuric acid of 1〖DK（〗∶〖DK）〗1.5，pretreatment temperature at 180 ℃，liquid to solid ratio of 2〖DK（〗∶〖DK）〗1 in agitation leaching，and leaching for 4 h.This process has good leaching performance.All factors of dosage of concentrated sulfuric acid，pretreatment temperature，liquid to solid ratio，as well as leaching time significantly influence the leaching rate of beryllium oxide，among which the temperature is the most.By the leaching process above，energy consumption and costs can be greatly reduced.The process provides a reference for beryllium concentrate leaching.