free cyanide

Error Analysis and Concentration control of Free Cyanide in Copper Plating Bath

氰化镀铜液中游离氰化钠的分析误差和含量控制

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A cyanide-free silver electroplating process with 5,5-dimethyl hydantoin as coordination agent is studied.

研究了5,5-二甲基乙内酰脲为配位剂的无氰镀银工艺。

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The concentration of free cyanide is one of the main control indices for gold extraction liquid of cyanidation. Electrode poisoning is the main difficulty in free cyanide monitoring of cyanidation liguid with silver ion selective electrode. The poisoning ion is determined by electron probe analysis.

游离氰浓度是氰化提金液的主要控制指标之一.用银离子选择电极监测金矿氰化液的游离氰其主要困难在于电极中毒.通过电子探针分析确定了中毒离子；

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The effect of pulse frequency and pulse duration ratio on the abrasion resistance of gold coatings is investigated with pulse plating in cyanide free and trace cyanide baths.

研究了脉冲电镀在微氰镀金，无氰镀金体系中脉冲频率、脉冲占空比对镀金层耐磨性的影响。

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The free cyanogen determinator is used to make density analysis of free sodium cyanide in the cyanide leaching solution of gold ore.

游离氰测定仪用于金矿氰化液中的游离氰化钠浓度分析。

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It showed from experiments that the best approach to the treatment of fine grained disseminated gold ore was hot press oxidation of flotation concentrate of pyrite followed by cyanide leaching. formed is reacted with excess of iodide in an acidic medium to give free iodine ( I?)

试验结果表明：对含金黄铁矿精矿进行压热氧化&氰化浸出，是处理该微细粒浸染型金矿石较有效的方法。

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Preparation of Stroma-free Methemoglobin Solution ( SFMS) and the Effect of SFMS in the Treatment of Cyanide Poisoning: A Preliminary Study

无基质高铁血红蛋白的制备及抗氰效果初步观察

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In the first 5 hours of leaching, the impure mineral consumed most of free sodium cyanide of the liquor, in that case, the rate of gold leaching is low.

在搅拌浸出最初的5小时内，杂质矿物消耗了溶液中大部分的游离氰化钠，金的浸出率偏低。

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When determine free sodium cyanide in cyanide solution, a positive deviation presents markedly due to dissociation of part complex ions of zinc and copper.

银量法测氰化液中游离氰化钠时铜锌络离子的部分解离造成显著的正偏差。

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