文章对粉煤灰焙烧——酸浸过程进行了研究,考察了焙烧、酸浸对提取铝的影响。试验结果表明:焙烧条件为:时间2h,焙烧温度850℃,粉煤灰与ZP的质量比为5∶1;浸出条件为:反应温度90℃,浸出时间2h,盐酸浓度5ml/l,液固比5ml/g的条件下,铝提取率达到93.12%。

针对某超贫磁铁矿进行详细的探索试验研究,确定采用"干式磁选抛尾——干式磁选粗精矿再磨——弱磁选"选别工艺选别该矿石。研究结果表明,采用该工艺可以获得TFe品位62.05%、回收率68.03%,mFe品位61.24%、回收率85.46%的铁精矿,获得较好的选矿指标。

It is difficult via flotation to separate lead,zinc and sulphur contained in complicated-structured lead-zinc sulphide ore.The following methods are applied:Xanthate is used as collecting agent and zinc sulphate is used as suppressant to suppress zinc and float lead;coarse lead concentrate is reground and floated at high-basicity;finally appropriate processes are carried out to separate zinc from sulphur.The problem that zinc content in lead concentrate is too high is solved;and lead,zinc and sulphur are well separated from each other;which brings increase of economic benefit.

The mechanism of sulphurising-amine promoter flotation treating oxidized zinc ore is explained.It is found out that the optimum pH value in the flotation is 7~12.After sulphurising,the oxidized zinc ore gets the same mineral surface like that of oxidized ore.Then it is possible to use xanthate or amine as promoter to collect zinc mineral.

针对该复杂难选金——铜——钴多金属矿,探索了浮选、重选等多种选矿工艺均难以达到分选的效果。试验最终采用预处理(焙烧)——浸出——浮选的联合流程,使多种有价金属得到了较好的综合回收利用。

The main minerals in the copper-molybdenum ore are chalcopyrite and molybdenite.By the technology flowsheet of copper-molybdenum bulk flotation and separattion of Cu-Mo after regrinding for copper-molybdenum bulk concentrate,a molybdenum concentrate with 46.97% Mo,86.24% of recovery and a copper concentrate with 20.19% Cu,91.64% of recovery were respectively obtained.