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Determination method for amount of silver in gold-loaded carbon

A method of determination, gold-loaded carbon technology, applied in the direction of weighing by removing certain components, can solve the problems of easy system deviation, narrow detection range, and unstable detection in instrument analysis, so as to reduce experimental costs and facilitate operation , Improve the effect of test speed

Inactive Publication Date: 2016-11-16
CHANGCHUN GOLD RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing methods for detecting silver in carbon have many disadvantages, such as narrow detection range, system deviation prone to occur in instrumental analysis, and existing methods for samples with relatively high grades are unstable and have relatively large errors

Method used

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  • Determination method for amount of silver in gold-loaded carbon
  • Determination method for amount of silver in gold-loaded carbon
  • Determination method for amount of silver in gold-loaded carbon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Include the following steps:

[0041] (1) drying

[0042] After drying 3g of gold-loaded carbon sample at 100°C for 1 hour, place it in a desiccator and cool it to room temperature;

[0043] (2) Roasting

[0044] Roasting of charcoal: first weigh 5g of silicon dioxide and spread it in a square porcelain boat, then cover the sample of gold-loaded carbon on the silicon dioxide, place it in an electric furnace at 200°C, raise the temperature to 600°C, and keep it for 1h , until the sample is completely roasted, take it out and cool it;

[0045] (3) Ingredients

[0046] Weigh 40g of sodium carbonate, 80g of lead oxide, 10g of borax, and 4g of flour in a crucible, then transfer all the roasted gold-loaded carbon samples into it, stir evenly, and cover with a 10mm thick covering agent;

[0047] (4) melting

[0048] When the electric furnace is preheated to 800°C, put the crucible into the furnace, heat up to 900°C within 30 minutes, keep warm for 10 minutes, continue to ...

Embodiment 2

[0069] Include the following steps:

[0070] (1) drying

[0071] After drying 6g of gold-loaded carbon sample m at 102°C for 1h, place it in a desiccator and cool it to room temperature;

[0072] (2) Roasting

[0073] Charcoal roasting: first weigh 5g of silicon dioxide and spread it in a square porcelain boat, then cover the sample of gold-loaded carbon on the silicon dioxide, place it in an electric furnace at 280°C, raise the temperature to 630°C, and keep 1 .5h, until the sample is completely roasted, take it out and cool;

[0074] (3) Ingredients

[0075] Weigh 40g of sodium carbonate, 80g of lead oxide, 10g of borax, and 4g of flour in a crucible, then transfer all the roasted gold-loaded carbon samples into it, stir evenly, and cover with a 10mm thick covering agent;

[0076] (4) melting

[0077] When the electric furnace is preheated to 830°C, put the crucible into the furnace, heat up to 920°C within 30 minutes, keep warm for 10 minutes, continue to heat up to 11...

Embodiment 3

[0098] Include the following steps:

[0099] (1) drying

[0100] After drying 9g of gold-loaded carbon sample m at 105°C for 1h, place it in a desiccator and cool it to room temperature;

[0101] (2) Roasting

[0102] Roasting of charcoal: First weigh 5g of silica and lay it flat in a square porcelain boat, then cover the gold-loaded carbon sample on the silica, place it in an electric furnace at 350°C, raise the temperature to 650°C, and keep it for 2h , until the sample is completely roasted, take it out and cool it;

[0103] (3) Ingredients

[0104] Weigh 40g of sodium carbonate, 80g of lead oxide, 10g of borax, and 4g of flour in a crucible, then transfer all the roasted gold-loaded carbon samples into it, stir evenly, and cover with a 10mm thick covering agent;

[0105] (4) melting

[0106] When the electric furnace is preheated to 850°C, put the crucible into the furnace, heat up to 930°C within 30 minutes, keep warm for 10 minutes, continue to heat up for 20 minute...

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Abstract

The invention relates to a method for determining the amount of silver in gold-loaded carbon, which belongs to the method for determining the amount of silver in carbon chemical analysis methods. The sample is batched and melted to obtain lead buttons of appropriate quality (containing gold and silver) and friable slag, and the residual silver in the slag is recovered. The gold and silver composite particles are separated from the lead buttons by ash blowing, and the obtained gold and silver composite particles are weighed after treatment. The gold and silver grains are separated into gold by nitric acid. Silver content can be calculated after weighing. The invention can improve the accuracy of the experiment, simplifies the experiment procedure, is convenient to operate, can realize the batch operation of samples, and improves the work efficiency.

Description

technical field [0001] The invention relates to the determination of silver content in a carbon chemical analysis method, in particular to the determination of silver content in gold-loaded carbon. Background technique [0002] The semi-finished gold produced in the last process of the gold smelting process is called gold-loaded charcoal, and most of the charcoal samples contain silver as a by-product, and the recovery value of silver as a precious metal is also particularly high. The existing methods for detecting the amount of silver in carbon have many disadvantages, such as narrow detection range, system deviation prone to occur in instrumental analysis, and the existing methods for samples with relatively high grades are unstable and have relatively large errors. In order to improve the accuracy of silver detection, it is necessary to research and invent a more effective method, which can not only improve the accuracy of data, but also increase the detection range and e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/04
CPCG01N5/04
Inventor 钟英楠马丽军芦新根李正旭周旭亮
Owner CHANGCHUN GOLD RES INST
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