YS/T 775.5-2011Methods for chemical analysis of lead anode slime. Part 5: Determination of gold and silver content. Fire assay gravimetric method (English PDF)

Foreword

YS/T 775-2011 "lead anode mud chemical analysis method" is divided into seven parts.

- Part 1. Determination of lead content - Na2EDTA titration;

Part 2. Determination of Bismuth Flame Atomic Absorption Spectrometry and Na2EDTA Titration;

- Part 3. Determination of arsenic content - Potassium bromate titration;

- Part 4. Determination of antimony content - Flame atomic absorption spectrometry and cerium sulphate titration;

- Part 5. Determination of gold and silver;

- Part 6. Determination of copper content - Iodometric method;

Part 7. Determination of arsenic, copper and selenium - Inductively coupled plasma atomic emission spectrometric method.

This section is part 5.

This part is drafted in accordance with the rules given in GB/T 1.1-2009.

This part is the national nonferrous Metals Standardization Technical Committee (SAC/TC243).

This part is responsible for drafting units. Shaanxi Dongling Smelting Co., Ltd.

This part of the drafting unit. Tongling Nonferrous Metals Group Holdings Limited, Beijing Mining and Metallurgy Research Institute.

This part participates in the drafting unit. Shaanxi Dongling Smelting Co., Ltd., Zhuzhou Smelting Group Co., Ltd., China Metallurgical Huludao Nonferrous Metals Group Limited.

This part of the main drafters. Shao Conghe, Li Qinmei, Zhou Weiping, Fan Zhanfang, Yuan Yuxia, Wang Haoying, Chen Diangeng, Zhou Wei, Yang Yan, Ma Xiaoyan, Ning Pingli, Xiong Fangxiang, Zhang Ming, Xi Hongjie, Ding Li.

Methods for chemical analysis of lead anodes Part 5. determination of gold and silver Fire test gold weight method

1 Scope

This section specifies the method for the determination of gold and silver in lead electrolytic anode mud.

This part is applicable to the determination of gold and silver in lead electrolytic anode mud. Determination of the range of gold 0.050kg/t ~ 1.000kg/t;

Silver 50.00kg/t ~ 250.00kg/t.

2 Method summary

The sample with the right amount of flux melting at the same time, lead to capture gold, silver to form a buckle. Other impurities and flux generated fusible slag, the use of the density of the lead and the slag is different from that of the slag and the slag is separated from the slag, and the gold and silver are obtained by soaking. The amount of gold and silver is measured by weighing method. Use gold insoluble in the nature of nitric acid, gold and silver separation, with the weighing method to determine the amount of gold, the amount of gold minus the amount of silver.

3 Reagent

Unless otherwise stated, only the reagents identified as analytical reagents and distilled or deionized water or comparable purity were used in the analysis.

3.1 anhydrous sodium carbonate, powder, industrial pure.