本文已被：浏览 2079次 下载 2679次
投稿时间：2018-02-03 修订日期：2018-02-06 录用日期：2018-02-08 网络发布日期：2018-06-15
投稿时间：2018-02-03 修订日期：2018-02-06 录用日期：2018-02-08 网络发布日期：2018-06-15
中文摘要: 采用“闪速焙烧—碱溶”工艺对某中低品位铝土矿脱硅，考察了焙烧温度、脱硅液固比、碱浓度、脱硅温度、脱硅时间对SiO2脱除率和Al2O3损失率的影响。结果表明，最佳单因素条件为：焙烧温度1 000 ℃、脱硅液固比L/S=10︰1、碱浓度NK=110 g/L、脱硅温度95 ℃、脱硅时间20 min，最佳条件下SiO2脱除率在46%以上，Al2O3损失率低于3%，A/S由焙烧矿的4.3提高到铝精矿的8.4。该方法可应用于拜耳溶出生产。
Abstract:"Flash-roasting - alkali dissolving desilication" method was applied to treat low-grade high-sulfur bauxite. Effects of flash roasting temperature, L/S, alkali concentration, desilication temperature, and desilication time on removal rate of SiO2 and loss rate of Al2O3 were investigated. The results show that removal rate of SiO2 is 46% above, loss rate of Al2O3 is 3% below, and A/S ratio rises from 4.3 in roasted ore to 8.4 in aluminum concentrate under the optimum conditions including flash roasting temperature of 1 000 ℃, L/S=10︰1, alkali concentration of NK=110 g/L, desilication temperature of 95 ℃, and desilication time of 20 min. This process can be applied to Bayer dissolution production.
keywords: flash roasting high-sulfur bauxite desilication
文章编号： 中图分类号： 文献标志码：
基金项目:国家自然科学基金资助项目(51774102，51574095，51664005)；贵州省教育厅项目（黔教合KY字[2015]334号）；贵州省校合作项目（黔科合LH字[2014]7609）
| Author Name | Affiliation | |
| XieZHenSHan | Guizhou University | 847898751@qq.com |
| Li JunQi | ||
| Chen CHaoYi | ||
| Lan YuanPei |
引用文本：
谢振山,李军旗,陈朝轶,兰苑培.中低品位高硫铝土矿焙烧脱硅研究[J].有色金属（冶炼部分）,2018(7):13-16.
XieZHenSHan,Li JunQi,Chen CHaoYi,Lan YuanPei.Research on Flash Roasting – Alkali Dissolving Desilication of Low Grade High-sulfur Bauxite[J].Nonferrous Metals (Extractive Metallurgy),2018(7):13-16.
谢振山,李军旗,陈朝轶,兰苑培.中低品位高硫铝土矿焙烧脱硅研究[J].有色金属（冶炼部分）,2018(7):13-16.
XieZHenSHan,Li JunQi,Chen CHaoYi,Lan YuanPei.Research on Flash Roasting – Alkali Dissolving Desilication of Low Grade High-sulfur Bauxite[J].Nonferrous Metals (Extractive Metallurgy),2018(7):13-16.
关注微信公众号