少量的铅含量在贵金属的氰化提金工艺中是有益的，但铅含量过高在金精矿的焙烧—氰化提金过程中是有害的。
The few lead content is beneficial in the precious metal cyaniding, but the high lead content in the gold concentrate roasting-cyaniding is harmful.
综述了我国部分黄金矿山对氰化尾矿中有用金属的综合回收工艺研究、生产实践及指标。
The technology, production practice and techno economic indexes of the synthetic recovery of valued metals from cyanide tailing are introduced.
主要供备件金属零件淬火、氰化、退火和回火等热处理用，尤其适用于紧固件、标准件热处理。
Mainly for spare parts heat treatments and so on metal parts quenching, cyaniding, annealing and tempering USES, especially is suitable for the fastener, the standard letter heat treatment.
研究了用烷基吡啶基聚苯乙烯树脂(BPR)从氰化液中吸附各种金属氰离子。
The adsorption of many metal cyanides from alkali cyanide solutions using BPR resin was investigated.
对黄金氰化厂的金属平衡工作有较好的指导意义。
These are of guiding significance to the work for metallurgical balance in cyanide mill.
用双金属氰化物(DMC)络合催化剂可制得相对分子质量高、相对分子质量分布窄和不饱和度低的聚醚多元醇。
The polyether polyols which has higher molecular weight, narrower molecular weight distribution and lower unsaturation can be prepared by using double metal cyanide (DMC) complex catalysts.
对于黄金矿山来说，氰化尾渣中尚有可回收的金、银、铜、铅等有价金属元素。
There are many valuable metals in the cyanidation tailings, such as gold, silver, copper and lead.
某氰化尾渣金属矿物以黄铁矿为主，有极少量闪锌矿、方铅矿和黄铜矿，脉石矿物以石英为主。
The main metal mineral in a cyanide tailing is pyrite and a little sphalerite, galena and chalcopyrite, gangue mineral is quartz.
该工艺不仅可有效回收剧毒物质氰化物，同时也可选择性回收其中的有价金属铜等，提高资源综合利用率及经济效益。
This process not only recovered the toxic cyanide and the valuable metallic elements in the wastewater effectively, but also improved the ratio of resource comprehensive utilization.
加压氰化过程通过强化反应动力学，可实现难浸金属的高效浸出，在贵金属湿法提取冶金领域是一新兴技术。
The researches and newest progressing in pressure cyanidation method for treating the refractory gold ores, spent auto-catalysts and platinum-group metals ores were reviewed in present paper.
本研究为重金属离子强化氰化浸金提供了理论依据和技术基础。
This research has offered the theoretical and technological foundation for the application of heavy metal ions in strengthen gold cyanidation.
考察了一元铂与二元铂铑两种贵金属催化剂对氰化氢的催化燃烧效果，探讨了温度、氰化氢浓度、空气含量及气体空速等因素对脱除氰化氢的影响。
The catalytic combustion of hydrogen cyanide was studied separately in presence of two kinds of noble metal catalysts, i. e. , unary platinum and dualistic platinum-rhodium.
本文对某含多金属硫化物型金精矿氰化浸金工艺进行了系统研究。
In this PaPer, the gold leaching from complex sulfide-bearing gold concentrate by cyanide process was studied systematically.
本发明主要涉及一种用于合成高分子量低不饱和度聚醚多元醇的新型双金属氰化物催化剂(DMC)及其制备方法。
This invention relates to a new duplex metal cyanide catalyst (DMC) used in synthesizing polyether polyol with high molecular weight and low degree of unsaturation and method for making same.
以二氧化碳3环氧丙烷为原材料，在双金属氰化物催化剂催化下，利用环流反应器合成聚碳酸亚丙酯多元醇。
Poly (propylene carbonate) polyols was synthesized by the copolymerization of carbon dioxide with propylene oxide in the presence of double metallic catalyst in loop reactor.
以二氧化碳3环氧丙烷为原材料，在双金属氰化物催化剂催化下，利用环流反应器合成聚碳酸亚丙酯多元醇。
Poly (propylene carbonate) polyols was synthesized by the copolymerization of carbon dioxide with propylene oxide in the presence of double metallic catalyst in loop reactor.
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