世界有色金属Issue(6)：208-210,3.
硫酸钙产品的金属杂质清除及提质增白研究
Research on the removal of metal impurities and improvement of quality and whitening of calcium sulfate products
田斌 1王斌 1徐展鹏 1秦兴荣 1胡志龙1
作者信息
- 1. 甘肃稀土新材料股份有限公司,甘肃白银 730600
- 折叠
摘要
Abstract
Calcium sulfate products are widely used and have a large market demand.In recent years,the company's production of calcium sulfate has gradually increased,but some of it is affected by impurities,resulting in low whiteness and limited resource utilization.This study systematically investigated the effects of solid-liquid ratio,stirring speed,washing time,and washing solution type on impurity removal efficiency using carbonized slag from the magnesium bicarbonate section as raw material.The results showed that most soluble impurities can be removed by water washing,and acidic washing solution is effective in removing insoluble impurities.However,the impurity removal effect of dilute sulfuric acid is better than that of acidic magnesium sulfate wastewater.Under the conditions of a stirring speed of 300 r/min and a stirring time of 40 min,0.2 mol/L dilute sulfuric acid was used to wash the carbonized slag.The removal rates of Mg,Fe,and Cl-were 91.33％,50.00％,and 81.32％,respectively,and the whiteness increased from 60.16％to 65.36％.关键词
工业副产品/硫酸钙/杂质去除/固废资源化Key words
industrial by-products/Calcium sulfate/Impurity removal/Solid waste resource utilization分类
资源环境引用本文复制引用
田斌,王斌,徐展鹏,秦兴荣,胡志龙..硫酸钙产品的金属杂质清除及提质增白研究[J].世界有色金属,2025,(6):208-210,3.
