浮选硅酸盐重晶石矿实践上并不困难,因为硅酸盐和石英容易被水玻璃抑制。从含硅、镁和白云石的碳酸盐中浮选重晶石时产生较大的困难,因为它们的可浮性和重晶石的可浮性相差不大,在这种情况下,得到富的重晶石精矿是困难的,且在脂肪酸捕收剂和磺酸衍生物配合使用时,才能使过程达到令人满意的选择性。捕收剂应当是不仅有效,而且用量要足够。本文阐明从别洛乌索夫斯克矿床石英质矿石和米尔加里木赛依斯克矿床的碳酸盐矿石中浮选重晶石时各种药剂的试验结果。下列药剂同油酸钠比较:棉油渣脂肪酸的液体产物、塔尔油轻馏份、合成油脂酸皂、癸二酸生产的下脚料、两次磺化棉油渣、谢贝基诺斯克化学综合厂的肥皂、合成脂肪酸生产的馏渣、“诺沃斯基”洗涤粉剂,以真甲鲸油高级醇为基础的烷基硫酸盐浆和氨基脂肪酸与甲二甲苯磺酸钠缩合的产物。所有脂肪酸捕收剂都以相应的皂水溶液形式加入作业中,并且以氢氧化钠进行皂化。当浮选碳酸盐矿物时,作为脉石矿物抑制剂除了 Flotation of silicate barite is not difficult in practice, because silicate and quartz are easily inhibited by water glass. Barite is more difficult to float from carbonates containing silicon, magnesium and dolomite because their buoyancy is comparable to that of barite, in which case, Rich barite concentrate is difficult and can be used to achieve satisfactory selectivity of the process when fatty acid collectors and sulfonic acid derivatives are used in combination. The collector should not only be effective but also be used in sufficient amount. This article illustrates the results of various agents tested for the flotation of barite from carbonate ore from the Belośsovsky deposit and from the carbonate ore from the Milligamy Sisirke deposit. The following agents are compared with sodium oleate: liquid products of cottonseed oil fatty acids, tar oil light distillate, synthetic fatty acid soap, sebacic acid produced waste, twice sulfonated cottonseed oil, Xie Beijinisco chemical synthesis Plant soap, distillate produced from synthetic fatty acids, “Novozymes” washing powder, alkyl sulfate pulp based on the higher alpha-carnitine alcohol and product of the condensation of amino fatty acids with sodium methaxylysulfonate. All fatty acid collectors are added to the work in the form of corresponding soapy water solutions and saponified with sodium hydroxide. Except as a gangue mineral inhibitor when flotation of carbonate minerals