氰化

Through examinating technological process and researching technical mineralogy of Jinqu cyaniding workshop, the main reasons which reduced gold recovery rate were discovered, which were associated tellurium minerals and the pyrrhotite influence.

通过时金渠金矿氰化车间流程考查和工艺矿物学研究，找出了回收率低的主要原因是伴生碲矿物及磁黄铁矿的影响。

Carbonitriding Carbonitriding, sometimes known as dry cyaniding or nicarbing, is a case-hardening process in which the steel is held at a temperature above the critical range in a gaseous atmosphere from which it absorbs carbon and nitrogen.

碳氮共渗碳氮共渗，有时也称为干法氰化或渗碳氮化，是一种表面硬化工艺。通过把钢放在高于临界温度的气体中，让它吸收碳和氮。

The process may involve the use of molten sodium cyanide mixtures; pack carburizing with activated solid material such as charcoal or coke , gas or oil carburizing , and dry cyaniding .

工艺可能涉及到熔化的氰化钠混合物，带有活性固体物质如活性炭、焦炭等的固体渗碳，气体或油性渗碳剂，还有干法氰化。

Mostly uses in the laboratory for each heat treatments , for example metal parts quenching, cyaniding,annealing and tempering, especially is suitable for the fastener, the standard workpiece heat treatment.

主要用于实验室供各种金属零件淬火、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。

The copper in the mineral is easy to forms the Cu2 precipitations covering on mineral surface during the cyaniding process,which will hindrance the further gold cyaniding response.

姜涛等人提出加入氨水络合铜，使铜在氰化体系中形成氰氨混合配体化合物[Cu3(NH3)3]2-，使金的浸出不依赖于溶液中游离氰根的浓度，但这也只能使金的浸出率提高4%~5%。

Earbonitriding Earbonitriding, sometimes known as dry cyaniding or nicarbing, is a case-hardening process in which the steel is held at a temperature above the critical range in a gaseous atmosphere from which it absorbs carbon and nitrogen.

碳氮共渗碳氮共渗，有时也称为干法氰化或渗碳氮化，是一种表面硬化工艺。通过把钢放在高于临界温度的气体中，让它吸收碳和氮。

Carbonitriding, sometimes known as dry cyaniding or nicarbing, is a case-hardening process in which the steel is held at a temperture above the critical range in a gaseous atmosphere from which it absorbs carbon and nitrogen.

碳氮共渗碳氮共渗，有时称为干氰化或nicarbing ，就是一个例子硬化过程中，钢铁是在温度高于临界各种气体的气氛它吸收碳和氮。

Removal of arsenic by bacteria ; percolation leaching ; cyaniding for gold extraction

中国科学院化工冶金研究所；黄金， GOLD ，编辑部邮箱 1994年 03期细菌脱砷；渗滤浸出；氰化提金

inferior gold potassium of cyaniding ; complex ion ; chemical formula ; electrochemistry ; cyanide ; heavy crystallization

氰化亚金钾，又称亚金氰化钾，化学式为KAu2·2H2O，白色结晶或粉末，无水物的比重为3.45×103mg/m3，熔点200℃，溶于水，微溶于酒精，不溶于乙醚，有剧毒，主要用于纯金的电镀和用作化学试

The present invention is particularly applicable but not limited to the treatment of alkaline and acidic non-cyanide zinc electrodeposits to impart improved corrosion resistance and a decorative appearance to the treated substrate.

本发明特别适用但不限于酸性和碱性治疗非氰化锌镀层至传授提高耐蚀、装饰物外观的待遇。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。