共查询到15条相似文献,搜索用时 93 毫秒
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采用细粒筛分法部分提纯粗粒光卤石,筛下细粒产品通过反浮选法提纯,试验表明可以大大提高产品纯度和收率,是一种方便、简单、节能和加工成本较低的提纯方法。 相似文献
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察尔汗盐湖是我国最大的可溶性钾镁盐矿床,以相图理论为依据,介绍了反浮选—冷结晶法从含钠光卤石制取氯化钾的相图分析。 相似文献
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柴达木盆地是我国重要的钾肥基地,年产氯化钾超过700×10~4t,副产尾盐超过1 000×10~4t,尾盐的主要组分是氯化钠,并夹带少量的氯化钾。通过精制试验研究,进一步回收氯化钾,氯化钠则作为纯碱原料,实现了尾盐的梯级综合利用,对促进盐湖循环经济发展具有重要意义。试验表明,采用二段洗涤工艺,结合喷淋和搅拌两种洗涤方式处理钾肥生产浮选尾盐,浮选尾盐经二段洗涤所得产品中氯化钠含量达到92.54%,符合纯碱所需原盐指标要求;母液中的氯化钾富集到一定程度后,回收可作为钾肥生产原料。 相似文献
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马海盐湖钾资源经过十几年的开发,在生产氯化钾过程中排放了大量的含钾尾盐,随着盐湖钾资源持续的开发,马海盐湖的钾资源已凸显日益枯竭的趋势,为高效利用马海盐湖的钾盐资源,近年来开展了对浮选法生产氯化钾过程所排放的含钾尾盐矿的开发利用技术研究。介绍了采用强制搅拌溶浸技术,溶浸马海盐湖含钾尾矿中钾资源的试验情况及所取得的试验结果,并对试验过程中出现的问题进行了讨论。 相似文献
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介绍了几种脂肪酸类矿物捕收剂改性产物,它们分别以油酸和松香酸作为出发原料。改性产物浮选性能、药剂用量、水溶解度都得到改善,并与原酸进行了比较。 相似文献
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Kerosene, a grade mineral oil, is commonly used to extract beetles from sediment. Here, the use of kerosene to extract chironomid
head capsules was tested on 10 samples from sediment of different lakes, with different organic matter content as measured
by loss on ignition, and estimated ages. Our results revealed that this flotation tool is very effective in extracting either
full or half chironomid head capsules. The mean extraction efficiency was 89.3 ± 8.0% with an estimated relative abundance
error ranging from −1% to 1% for 46 of the 57 identified taxa. Larger chironomids (400–500 μm width), which are often full
of sediment particles, have the highest relative abundance error, with a maximum of 4.3% for Corynocera oliveri-type. A canonical correspondence analysis showed that, despite this small bias, samples retrieved with the kerosene flotation
do not differ from the whole sample assemblages. These results give us confidence in the use of this flotation technique for
chironomid sample preparation. 相似文献
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