不同酸化剂对乌兰林格膨润土活化效果的影响  

Effects of various acidification reagents and concentrations on activation effect of bentonite from Wulanlinge

作　　者：孙传庆[1] 武占省[1] 李春[1] 孙喜房[1] 

机构地区：[1]石河子大学化学化工学院,新疆石河子832003

出　　处：《化工矿物与加工》2007年第2期19-21,25,共4页Industrial Minerals & Processing

基　　金：新疆生产建设兵团博士基金(04BSZJ04)和石河子大学重大科技攻关项目(ZDGG2004-01)资助

摘　　要：考察了不同加量的磷酸、硫酸和盐酸对乌兰林格白色钠基膨润土的活化效果,表明磷酸活化产品游离酸在0.302%～0.869%之间,远高于硫酸的0.026%～0.070%,其脱色率远低于硫酸、盐酸活化产品.硫酸和盐酸在加酸量分别为25%和30%时产品有最高的脱色率,综合考虑确定硫酸为最佳酸化剂.不同酸化剂活化产品的活性度和游离酸随着加酸量的增大而变化的趋势基本一致,活性度出现最大值时所需的加酸量比脱色率出现最大值时的要小,松散密度与脱色率总体呈反向变化趋势.Activation effect of bentonite from Wulanlinge ore,treated with phosphoric acid, sulfuric acid and hydrochloric acid, respectively, were investigated. Results showed clearly that activation effect with phosphoric acid was worse as a whole, namely, free acid of products prepared with phosphoric acid with range from 0. 302 % to 0. 869% was much higher than that, ranging from 0. 026% to 0.070%, of products prepared with sulfuric acid. However, the bleaching capability was lower than that of products prepared with sulfuric and hydrochloric acid. Furthermore, both acids activated bentonites prepared with 25% sulfuric acid and 30% hydrochloric acid possessed the highest bleaching capability. Sulfuric acid was more suitable for activation reagent by taking everything into account. With the increasing of acid addition amount, activity degree of products prepared with each acidification reagent had the same changing tendency with free acid. The addition amount of acid at the maximum of activity degree was lower than that at the maximum of bleaching capability, and loose density and bleaching capability of products had reverse change trends as a whole.

关 键 词：膨润土 活性白土 酸化剂 活化效果 

分 类 号：TD985[矿业工程—选矿]