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Gold standard sample preparation method

A gold standard and standard sample technology, applied in the field of gold standard sample preparation, can solve the problems of single type and small quantity, and achieve the effect of satisfying individuality, simple smelting method and equipment, and scientific and reasonable smelting process and steps

Active Publication Date: 2021-07-09
山东黄金冶炼有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] The technical problem to be solved by the present invention is to provide a method for preparing a gold standard sample, through a specific method of multi-element doping and smelting in gold, to realize the preparation of a gold standard sample with a gradient distribution of impurity element content, and to solve the problem of the current gold standard sample. The problem of a small number of standard samples and a single type can fill the technical gap of multi-element doping and meet the growing product quality control needs of the gold industry

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with specific examples.

[0033] The steps of the embodiment of the present invention are as follows:

[0034] 1. Preparation of pure gold: Prepare or purchase gold samples by electrolysis, the gold content is greater than 99.997%, and process them into flakes with a certain thickness.

[0035] 2. Preparation of doping elements: Elements are required to be in the form of simple substances, with a purity greater than 99.99%, in powder or block form. In the embodiment of the present invention, 14 elemental substances such as Ag, Fe, Cu, Pb, Sb, Bi, Pd, Mg, Mn, Cr, Sn, Ni, Pt, and Te were prepared.

[0036] 3. Preparation of single-standard alloy: smelting pure gold and a certain amount of doping elements to prepare single-standard alloy. Single-standard alloys need to be prepared one by one, and all of them are smelted in separate containers. The specific smelting process is as follows: set or adjust ...

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Abstract

The invention discloses a method for preparing a gold standard sample, which comprises the steps of preparing pure gold and doping elements, preparing a single-standard alloy, preparing a mixed-standard alloy, and preparing a standard sample. Through two-stage doping steps such as single-standard alloy preparation and mixed-standard alloy preparation, and two smelting steps to uniformly incorporate doping elements; at the same time, when preparing gold standard samples, use pure gold as a dilution "solvent" to dilute the multi-element The mixed standard alloy was diluted step by step, and a set of gold standard samples with gradient distribution of impurity elements was successfully prepared. The invention successfully solves the problem of developing gold standard samples, solves the problems of less doped elements, high loss rate, and poor uniformity in conventional methods, and evenly mixes more than ten kinds of impurities into gold to prepare standard series samples, which are gold standard samples. The product quality control of smelting enterprises provides technical support.

Description

technical field [0001] The invention relates to a preparation method of a gold standard sample, and mainly relates to a multi-element doping and smelting method in the preparation of the gold standard sample. [0002] technical background [0003] As a precious metal, gold has important industrial applications and is also an important support for international finance and trade. According to market demand and relevant standard requirements, gold is usually processed into certain fineness products such as gold ingots, and the common grades are 99.5%, 99.9%, 99.99%, 99.995%. For the detection of this type of gold content, the instrument is generally used to carry out the impurity back-off method, and the accurate determination of the content of impurity elements is the key to the detection. Usually, it is necessary to use standard solutions or standard samples to calibrate the working curve of the instrument. Among them, the standard sample is a key link in quality control an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C5/02C22C1/02C22C1/03C23G1/10G01N33/2028G01N33/20G01N1/28
CPCC22C1/02C22C1/03C22C5/02C23G1/10G01N1/28G01N33/20G01N33/2028
Inventor 单召勇杨新华周发军高腾跃杨海江卞小冬殷晓斌荀维超王明双
Owner 山东黄金冶炼有限公司
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