文献类型：期刊文献

中文题名：从工业硅渣中回收硅和铝的研究

英文题名：Study on recovery of silicon and aluminum from industrial silicon slag

作者：罗文波 李恒 吕钧 杨林光 赵兴凡 龙潇

第一作者：罗文波

机构：[1]贵州理工学院材料与能源工程学院,贵州贵阳550003;[2]芒市永隆铁合金有限公司,云南芒市678400;[3]云南省龙陵县龙山硅有限责任公司,云南龙陵678300;[4]龙陵县鹏越科技咨询服务有限责任公司,云南龙陵678300

第一机构：贵州理工学院材料与能源工程学院

年份：2023

卷号：55

期号：9

起止页码：94-99

中文期刊名：无机盐工业

外文期刊名：Inorganic Chemicals Industry

收录：CSTPCD;;北大核心:【北大核心2020】；CSCD:【CSCD_E2023_2024】；

语种：中文

中文关键词：工业硅渣;硅酸钠;铝酸钠;苏打焙烧;浸出

外文关键词：industrial silicon slag;sodium silicate;sodium aluminate;soda roasted;leaching

摘要：工业硅渣主要成分为硅、铝、钙三元氧化物及少量单质硅,其他杂质含量极少,可以作为制备高品质分子筛的原料。采用“苏打焙烧-碱浸”工艺从工业硅渣中提取硅酸钠和铝酸钠溶液,考察焙烧时间、焙烧温度、碳酸钠加入量对硅、铝浸出率的影响。结果表明:在焙烧温度为800℃、焙烧时间为30min、碳酸钠加入量为理论量1.1倍的优化条件下,硅、铝转换率高,碱浸出时硅、铝的浸出率分别为82.34%和67.10%。该工艺可行,解决了工业硅废渣堆存问题,同时带来可观经济效益。
The industrial silicon slag is mainly composed of silicon,aluminum,calcium ternary oxides and a small amount of silicon.The content of other impurities is extremely rare.It can be used as the raw material for high-quality molecular sieve.Sodium silicate and sodium aluminate solution were extracted from industrial silicon slag by"baking soda alkali leach-ing"process.The effects of calcination time,calcination temperature and sodium carbonate addition on the leach rate of sili-con and aluminum were investigated.The results showed that under the optimum conditions of calcination temperature of 800℃,calcination time of 30 min and 1.1 times of the theoretical amount of sodium carbonate,the conversion rate of sili-con and aluminum was high,and the leach rates of silicon and aluminum in alkali leaching were 82.34%and 67.10%re-spectively.The process was feasible,which solved the problem of industrial silicon waste residue stockpiling and brings con-siderable economic benefits.