摘要
研究了Fe2（SO4）3-ZnSO4-H2O体系中Fe^3＋水热水解赤铁矿过程中反应温度、时间、初始Fe^3＋浓度、Zn^2＋浓度、晶种用量等对除铁率、赤铁矿沉铁渣物相组成及化学组成的影响规律.结果表明,升高反应温度、延长反应时间、降低初始Fe^3＋浓度、增加Zn^2＋浓度有利于提高除铁率和赤铁矿渣的品质,添加晶种有助于赤铁矿形核并提高赤铁矿纯度.在反应温度200℃、反应时间4 h、初始Fe^3＋浓度15 g/L及Zn^2＋浓度80 g/L、搅拌转速400 r/min的条件下,除铁率可达97.1%,获得了以赤铁矿为主要物相的沉铁渣,其含铁64.73%,含杂质硫1.41%,锌入渣率约为0.2%.
The effects of reaction temperature, retention time, initial Fe^3＋ concentration, Zn^2＋ concentration and hematite seed addition on iron removal rate, phase and chemical composition of hematite precipitates by hydrothermal hydrolysis of Fe^3＋ in Fe2（SO4）3-ZnSO4- H2O system were studied. The results showed that the increasing of temperature, retention time and Zn^2＋ concentration, and the decreasing of initial Fe^3＋ concentration have a positive effects on the iron removal rate and high-quality hematite precipitate obtaining. The presence of hematite seeds prompted the formation of hematite nucleation and affected their composition. The iron removal rate was 97.1% and hematite precipitate contained 64.73% Fe, 1.41% S, and 0.2% Zn under the conditions of temperature of 200℃, retention time of 4 h, stirring speed of 400 r/min, initial Fe^3＋ concentration of 15 g/L and Zn^2＋ concentration of 80 g/L.
作者
易烁文
李存兄
魏昶
邓志敢
李兴彬
王益昭
宋宇轩
黄亚宁
Shuowen YI;Cunxiong LI;Chang WEI;Zhigan DENG;Xingbin LI;Yizhao WANG;Yuxuan SONG;Yaning HUANG(Faculty of Metallurgical and Energy Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650093, Chin)
出处
《过程工程学报》
CAS
CSCD
北大核心
2018年第2期361-368,共8页
The Chinese Journal of Process Engineering
基金
国家自然科学基金资助项目(编号:51474117,51664038,51364022,51564030)
云南省教育厅科学研究重大专项基金资助项目(编号:ZD2014003)
