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- cyanidation proeess 氰化法
- The gold recovery of calcine cyanidation reached 90 percent. 焙砂提金,金的氰化浸出率达到90%25。
- This paper discussed two designing problems of the drum chipper in chipping proeess:mobile analysis and foree analysis. 本文就鼓式削片机削片过程中的运动分析、受力分析等设计计算问题进行了讨论。
- This paper analyses the effect of bench slice height and bucket-arm slope an-gle of bucket-wheel excavator on exeavation proeess. 轮斗挖掘机的作业台阶分层高度(或台阶分层系数)及斗臂作业倾角与所挖掘的矿岩性质有关。
- Meanwhile,only if the arsenic removal rate is over 50%,can the gold cyanidation leaching index be improved. 同时,只有脱砷率超过50%25以后,才能明显改善矿石中金的氰化浸出指标。
- The gold concentrates are pretreated by alkaline hot-press oxidation followed by flash cyanidation in autoclave. 本文通过试验研究提出了在碱性压热氧化条件下,金精矿在高压釜内进行闪速氰化的新工艺。
- A fresh method to treat cyanide-bearing tailing in the all-sliming cyanidation CIP technology for gold extraction is introduced. 介绍了一种全泥氰化炭浆提金工艺含氰尾矿处理技术新工艺方法。
- By direct cyanidation, the reaction of p-toluic acid with urea would convert the carboxyl group to cyano group to give p - tolunitrile. 本文报道了对甲苯甲酸与尿素反应,进行直接氰化将羧基转变成氰基生成对甲苯甲腈的情况,改进了对甲苯甲酸直接氰化的工艺条件。
- Arsenic-bearing gold ore is one of the refractory gold ores .Its conventional cyanidation leaching rate is generally very low. 含砷金矿是主要难处理金矿类型之一,该类金矿石常规氰化浸出率一般很低。
- The effects of variables on gold and silver recoveries in cyanidation lea-ching of silver concentrates have been investigated. 研究了银精矿氰化浸出过程中诸因素与金银浸出率的关系,确定了高氰化物浓度的物合浸出条件。
- In the cyanidation process,the henna film on some monomer gold was restrained,and as a result,the leaching period was shortened and the recovery rate was enhanced. 在氰化过程中,金精矿中的一些单体金粒表面上形成的红褐色薄膜得到抑制,缩短了氰化浸出时间,提高了金浸出率。
- Diethyl methyl malonate was prepared by cyanidation, bydrolysis and esterification with 2?chloropropionic acid as raw material and o verall yield is 41%. 以2-氯丙酸为原料;经氰化、水解、酯化制得甲基丙二酸二乙酯;总收率41%25.
- It introduced the hest technological proeess for rare earth extraction separation that occupres a dominat position on the consumption of acid and alkali,the whole volume of extraction installation. 介绍了在酸碱消耗、存槽有机(稀土)方面都具有优势的南方离子矿和氯化稀土分离最优化稀土流程。
- The tailing treatment technology of pressure filtration,dry piling and return of filter liquor to cyanidation system applied in Chaihulanzi Gold Mine is introduced. 介绍了柴胡栏子金矿尾矿压滤、干式堆存、滤液返回氰化系统的尾矿处理工艺及其技术经济指标。
- There are many factors affecting soaping gold with cyanidation, two of which, suitable temperature and dissolved oxygen, can increase gold leaching ratio with cyanidation. 影响氰化法侵金的因素较多,其中选择适宜温度和溶解氧供给条件,也是提高金矿石氰化浸出率的两项重要技术措施。
- The application of whole pressure filtration technology of tailing pulp in the all sliming cyanidation CIP plant of Jingdu Gold Smeltery of Beijing was introduced. 为确保尾矿处理设施安全、有效运行,对泰宁某选矿厂全泥氰化炭浆提金工艺含氰尾矿浆(浸渣)的处理设施进行了评述,提出了设计及操作要求。
- McInnes C M, Sparrow G J, Woodcock J T.Extraction of platinum, palladium and gold by cyanidation from coronation hill ore [J].Hydrometallurgy, 1993 (31): 157. 黄昆;陈景.;从失效汽车尾气净化催化转化器中回收铂族金属研究进展[J]
- In this paper,a fresh process of gold extraction is proposed.The gold concentrates are pretreated by alkaline hot-press oxidation followed by flash cyanidation in autoclave. 本文通过试验研究提出了在碱性压热氧化条件下,金精矿在高压釜内进行闪速氰化的新工艺。
- Thiopheneacetic acid was synthesized from thiophene by chloromethylation, cyanidation togive 2-thiopheneacetonitrile and followed by hydrolysis with an overall yield of 53%. 噻吩经氯甲基化、氰化反应得到2-噻吩乙腈,再经水解得到2-噻吩乙酸,总收率53%25。
- The effects of small quantities of heavy metal ions on gold cyanidation have been studied by using electrochemical techniques and leaching of gold ores. 根据黄狮涝金矿深部氧化金矿石的特性,对采用过氧化钙强化氰化浸出工艺进行了试验研究。