氰化处理

A new process for treatment of high-sulphur and high-arsenic gold concentrate was studied, with included the roasting at lower temperature with the addition of alkali fusion agent and the cyanidation leaching with the addition of active additive.

摘 要：研究富硫高砷金精矿在加入碱熔剂经低温焙烧预处理后，再加活性添加剂条件下的氰化工艺，结果表明，金的氰化浸出率从直接氰化或沸腾炉焙烧后的焙砂氰化的30%～50%提高到87%～93%，浸出速度也有很大提高。

This paper makes use the original system of pretreating refractory ore by hot-press oxidation to extract gold by cyanide process.

通过试验研究，提出了利用难处理矿石的热压氧化预处理的原有体系直接进行氰化提金的新工艺。

Through roasting, making acid from flue gas ,regrinding roasted tailing,extracting gold by CIP process,the cyanide tailings are well treated and no longer difficult to be sold.

采用焙烧、烟气制酸、焙砂再磨、氰化炭浆提金工艺处理金山金矿氰化尾矿，较好地解决了金山金矿氰化尾矿销售难问题，提高了矿产资源的综合利用程度，在保护环境的前提下，获得了较好的经济效益。

According to craft mineralogical research result, use raw ore to wait for sulfide via floatation eliminate realgar, gamboge first, soak of the cyaniding after floatation concentrate pretreatment, the plan of direct cyaniding soak undertakes floatation gangue experiment, total soak rate of gold is achieved 88.52%, relatively raw ore is direct soak of complete mud cyaniding increases 25.02 percent.

根据工艺矿物学探究结果，采用原矿先经浮选除去雄黄、雌黄等硫化物，浮选精矿预处理后氰化浸出，浮选尾矿直接氰化浸出的方案进行试验，金的总浸出率达到88.52%，较原矿直接全泥氰化浸出提高25.02个百分点。

A technology for leaching gold from a refractory gold concentrate using Mesophile preoxidizing-cyanide leaching was presented.

对安徽某难处理金精矿进行了中温菌预氧化氰化浸金试验研究，并与传统焙烧氰化浸金工艺进行了对比。

In order to guarantee the safe and effective operation of the treatment facilities for sludge containing cyanogens , this paper makes the comment on the treatment facilities for the process of gold-extracting with all-sliming cyanided carbon slurry in a Taining-based ore wash plant, and puts forward some requirements for the design and operation.

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的处理设施进行了评述，提出了设计及操作要求。

Cyaniding is used principally for the treatment of small parts.

通过这样处理可以容易地获得0.005到0.015英寸(0.13~0.38mm)的硬化深度。氰化主要用于处理小零件。

Various testings were conducted on the ore and the conclusions are as follows:Gold leaching rate is lower than 17% by all sliming cynidation;Gold leaching effect is poor by floatation and roasting cynidation;Bio preoxidizing cynidation and alkali soaking cynidation get the best results,the highest gold leading rate is up to 92 4%,and they are the effective meth...

通过各种选矿试验，该矿矿石用全泥氰化法金浸出率低于17％，浮选、焙烧氰化法浸出效果也不好，而用细菌预氧化、碱浸预氧化氰化法效果较好，金浸出率最高可达92.4％，是处理该类矿石较有效的选矿方法。

Optimal pretreatment conditions of electroless nickel plating for magnesium were decided by many experiments. Phosphoric acid technology was used to instead of acid processing by chromium trioxide and ferric chloride, and excellent coating was obtained by using dipped zinc, cyanide copper, nickel as medium.

通过多次试验确定了镁及镁合金的前处理方案，以磷酸洗的方法代替传统的铬酐加三氯化铁酸洗浸蚀的前处理工艺，配置简单，操作方便，以浸锌层、氰化铜层和中性镍层作为化学镀中间层，得到了结合力良好的化学镀镍层，获得了镁合金表面处理的新突破。

Silver electroplating of beryllium bronze with thiosulfate was used to replace conventional toxic silver plating with cyanide in accordance of the characteristics of the beryllium bronze .

从分析铍青铜材料的特殊性入手，针对性地采取有效的前处理工艺措施，以硫代硫酸盐镀银取代传统的有毒的氰化镀银，分析了银镀层变色的原因并提出了相应的抗变色处理措施。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。