Fire assaying analysis method for gold-containing solution

A gold assay analysis and solution technology, which is applied in the field of fire assay gold analysis of gold-containing solutions, can solve the problems of unclean blowing, analysis errors, and inability to form sponge gold, etc., and achieve the effect of accurate analysis

Inactive Publication Date: 2019-07-05
光洋新材料科技(昆山)有限公司
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Problems solved by technology

But sometimes there are too many impurities in the sample, and the sponge gold cannot be formed when reducing or boiling sulfuric acid, or the impurities are precipitated together with the sponge gold, and the ashes are not clean, resulting in analysis errors

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0023] A fire assay method for gold-containing solution, the steps comprising:

[0024] ①Sampling: Weigh the sample according to the predicted gold content of the gold-containing solution and put it into the cremation cup;

[0025] ②Evaporation: heat the cremation cup until the sample is semi-dry;

[0026] 3. Adjust pH: wash the semi-dry matter obtained in step 2 with alkaline solution until the remaining solid does not react;

[0027] ④ Heating: in step ③, the obtained solid is mixed with lead powder, and heated in a high-temperature furnace at 1000° C. for 1 hour to obtain molten metal;

[0028] ⑤Shaping: Pour the molten metal obtained in step ④ into the mold while it is still hot, cool it, and knock out the lead button;

[0029] ⑥ Ash blowing: blow the lead button at 1050 ℃ for 1 hour to obtain gold particles and weigh them;

[0030] ⑦ Constant volume: Dissolve the gold particles in aqua regia, determine the volume, measure the impurities in it by ICP method, and invert ...

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PUM

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Abstract

The invention belongs to the technical field of metal analysis, and particularly relates to a fire assaying analysis method for a gold-containing solution. The fire assaying analysis method comprisesthe steps of sampling, evaporation, Ph adjustment, heating, shaping, cupellation and constant volume setting. The fire assaying analysis method is characterized by integrating a fire assaying method,a gravimetric method and an ICP method, combining their advantages and achieving precise analysis of the gold-containing solution.

Description

technical field [0001] The utility model belongs to the technical field of metal analysis, in particular to a fire assay gold analysis method of a gold-containing solution. Background technique [0002] At present, all countries in the world regard precious metal renewable resources as an equally important resource as mineral resources. Compared with the recovery of precious metals from waste and extraction from ore, it has the advantages of high grade, simple components, less investment, low cost and good benefits. [0003] Gold-containing solutions will be produced in the electroplating industry and precious metal recycling industry. If the gold content of these gold-containing solutions is known in a timely and accurate manner, the following operations can be performed to generate greater economic benefits. [0004] The gold-containing solution includes aqua regia gold, gold stripping solution, KI waste solution, etc. Conventional methods for analyzing gold-containing s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/04G01N21/73
CPCG01N5/04G01N21/73
Inventor 马一峰袁理鹏张琼黄军浩
Owner 光洋新材料科技(昆山)有限公司
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