硅藻土酸浸液制备聚合硫酸铝铁絮凝剂及性能研究  

Preparation of Poly Aluminum Ferric Sulfate Flocculant from Diatomite Purifi ed Waste Acid and Performance Research

作　　者：高志刚 单世君 张博文 程亮 马志军[2] Gao Zhigang;Shan Shijun;Zhang Bowen;Cheng Liang;Ma Zhijun(Heilongjiang Longxing International Resources Development Group Co.,Ltd.,Heilongjiang,150000;College of Mining,Liaoning Technical University,Liaoning,123000)

机构地区：[1]黑龙江龙兴国际资源开发集团有限公司,黑龙江150000 [2]辽宁工程技术大学矿业学院,辽宁123000

出　　处：《当代化工研究》2023年第20期78-80,共3页Modern Chemical Research

基　　金：2021年,黑龙江龙兴国际资源开发集团有限公司科研项目“永安硅藻土工艺矿物学及提纯实验研究”(项目编号:LNTU21-2140)。

摘　　要：以黑龙江某硅藻土酸浸液为原料,采用氧化-水解-聚合法制备聚合硫酸铝铁絮凝剂,并以4g·L^(-1)的高岭土悬浮液为模拟废水,考察聚合硫酸铝铁的絮凝性能。结果表明:在双氧水用量为0.01V,pH值为2.5,聚合温度为65℃,聚合时间为2.5h,转速为150r·min^(-1),熟化时间为24h的条件下,可获得13.75g/50mL的淡黄色聚合硫酸铝铁固体;模拟废水对照组在5min内透过率的提高速率达12.8%·min^(-1),30min内沉降97mm,空白组没有明显变化,聚合硫酸铝铁表现出明显的絮凝性能,为硅藻土酸浸液的清洁利用提供了可行性技术方案。Poly aluminum ferric sulfate flocculant was prepared by oxidation-hydrolysis-polymerization method using acid leachate of the diatomite in Heilongjiang as raw material,and the flocculation performance of poly aluminum ferric sulfate was investigated using 4 g·L^(-1)kaolin suspension as simulated wastewater.The results showed that under the conditions of hydrogen peroxide dosage of 0.01V,pH value of 2.5,polymerization temperature of 65℃,polymerization time of 2.5 h,rotational speed of 150 r·min^(-1),and ripening time of 24 h,13.75 g/50 mL of light yellow poly aluminum ferric sulfate solids could be obtained;the simulated wastewater control group had a transmittance rate of 12.8%·min^(-1)in 5 min,a sedimentation height of 97 mm in 30 min,and there was no obvious change in the blank group,the poly aluminum ferric sulfate showed obvious flocculation performance,which provided a feasible technical solution for the clean utilization of diatomite acid leachate.

关 键 词：硅藻土 酸浸液 聚合硫酸铝铁 絮凝 废水处理 

分 类 号：TD985[矿业工程—选矿]