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Test method of alloy gold containing gold and silver and platinum group metal

A platinum group metal and alloy gold technology, applied in the field of smelting, can solve the problems of production and operation difficulties of gold refining enterprises, the inability to accurately measure the gold content, and the difficulty of separation of fused gold, so as to shorten the production cycle, solve the backlog of precious metals, The effect of shortening the processing cycle

Active Publication Date: 2010-08-04
LINGBAO CITY JINYUAN MINING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But it still has the following disadvantages: the gold content in gold raw materials containing platinum group metals cannot be accurately measured, and once the platinum group metals enter the production process, it will cause difficulty in the separation of refractory alloy gold, increase production costs, and a large amount of gold and silver will be backlogged, making gold Refining enterprises encounter difficulties in production and operation

Method used

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  • Test method of alloy gold containing gold and silver and platinum group metal

Examples

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Effect test

Embodiment 1

[0024] An acceptance method for alloy gold containing gold, silver and platinum group metals. The weight of the gold material is 6.5Kg, and the acceptance is accepted by melting with an oxyacetylene cutting torch:

[0025] (1) Carefully observe whether there are obvious lumps on the surface of the material and whether the surface color is consistent. If any abnormality is found, it should be determined as a key monitoring object. When melting and accepting, it must be highly valued and carefully operated;

[0026] (2) Each melting and feeding should not exceed 3.5Kg, and more than 3.5Kg can be checked and accepted in batches to ensure that the principle of "slow and trickle flow" is adhered to when casting after melting;

[0027] (3) The melting temperature of the material is maintained at 1250°C-1300°C for 10 minutes. After the gold raw material containing platinum group metals is melted, carefully observe the liquid material. If there is a block of refractory material or the ...

Embodiment 2

[0032] The weight of the gold material is 16Kg. The graphite crucible (No. 30) is melted in an intermediate frequency furnace. The gold material is fully melted at 1250°C-1300°C and then left for 10 seconds. Sampling is carried out before casting. The flow is poured into the mold and cooled to form an ingot, and at the same time, the material in the crucible is heated with an oxygen acetylene cutting torch. After each ingot is cast, the crucible is gently shaken and the next one is cast. Pour into the pre-prepared quartz crucible when the remaining material is 2Kg, continue heating and observing with an oxygen acetylene cutting torch, and the following steps are the same as those in Example 1.

Embodiment 3

[0034] Gold material weighs 60Kg, adopts No. 30 graphite crucibles; Except that in the first step, it will be melted in stages (can be according to each 30Kg), other is the same as embodiment 2.

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Abstract

The invention belongs to the field of smelting technology and in particular to a test method of alloy gold containing gold and silver and platinum group metal; the test method comprises the following steps: whether the surface of the alloy gold has obvious protruded lump and whether the surface color is consistent are determined; batch charging is carried out for smelting according to the standard with no more than 3.5kg, and the smelting temperature is 1250-1300 DEG C and is insulated for 8-10min; lumpy refractory matter in melted liquid state material or material with poor fusant mobility is separated; a sample for test is taken out by standing before casting is carried out, the remaining material is poured into a mold and then is smelted continuously, so as to separate out the lumpy refractory matter in the melted liquid state material or material with poor fusant mobility, and the remaining part is smelted gold material which is qualified by test; the test method can intercept the platinum group metal in the gold smelting and test link, so as to avoid interference of the platinum group metal to the gold electro-refining production, shorten the production period, simplify the production process and have high intercepting rate.

Description

(1) Technical field [0001] The invention belongs to the technical field of smelting, in particular to a method for checking and accepting alloy gold containing gold, silver and platinum group metals. (2) Background technology [0002] Usually, during the process of melting and accepting gold raw materials containing platinum group metals, the domestic gold refining industry finds that platinum group metals and gold and silver tend to form refractory alloy gold, which seriously interferes with the normal melting and acceptance of gold raw materials. Platinum group metals have high melting points and high specific gravity. After melting, they form refractory alloy gold and precipitate at the bottom of the crucible. Therefore, they cannot form alloy gold with uniform distribution of components with gold and silver, resulting in unrepresentative samples taken from melting. For example, the currently used national standard method: the national standard method "TB / G15249.1-1994" f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/28G01N1/44G01N27/44C22B11/00B22D7/00
CPCY02P10/20
Inventor 郭军安赵瑾宁彭维生
Owner LINGBAO CITY JINYUAN MINING
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