选矿

A new ore-dressing plant is rapidly going up.

一座新的正快速修建起来。

The current preperation methods of strontinum carbonate from celesite are carbon reduction method and double decomposition method.

中国天青石资源十分丰富,但石品位低、杂质含量高,需经除杂后才能作为生产碳酸锶的原料。

As a especially effective collector for processing copper sulphide ore, methyl sulphonamide features good selectiveness and strong collection.

甲硫氨酯作为硫化铜的特别有效的捕剂,具有择性好、捕力强的特性。

Finally,the most reasonable technological process of“stagewise grinding,coarse and fine classification,gravity separation magnetic separation reverse anionic flotation”has been found out.

最终推荐“阶段磨、粗细分级、重-磁-阴离子反浮”为合理工艺流程。

Using sodium hydrosulphide or sodium thiosulfate as materials,the production cost of TGA is low.While,a high content of TGA can be obtained with thiourea as reactant.

本文对乙酸的合成工艺进行了比较研究,认为硫氢化钠法和硫代硫酸钠法生产成本低,适宜于乙酸的生产,而硫脲法可得到较高浓度的乙酸。

Xanthic ester is a kind of catcher in the floatation of minerals.Though only a very little amount of xanthic ester is discharged into water, it smells wondrously bad.

[摘要] 浮捕集剂黄原酸酯极少量地排入水中也能使水的味道极其难闻。