A rapid analysis method for acid-insoluble matter in gold cyanide mud
A technology for rapid analysis of gold cyanide mud, applied in the direction of removing a certain component and weighing, etc., can solve the problems of inapplicability of gold cyanide mud, and achieve the effects of easy to master, complicated operation steps and convenient use.
Active Publication Date: 2017-07-28
山东黄金冶炼有限公司
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Problems solved by technology
Due to the particularity of the composition of gold cyanide mud, such as high ferrous metal content and different from general ore samples, it is not a simple mixture of conventional elemental metal powder, but a kind of metal element and its compounds, non-metallic impurities and their oxides. A specific gold dressing and smelting product, the conventional method of analyzing acid insolubles is not applicable to cyanide gold mud
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[0058] The present invention will be further described below in conjunction with specific examples.
[0059] 1. Main instruments and reagents:
[0060] Electronic balance: Metler Toledo XP105, measuring range 0.01mg~200g;
[0061] Electric heating plate: SB-1.8-3.6, Longkou Electric Furnace Factory;
[0062] Electric blast drying oven: 101-OS, Longkou Electric Furnace Factory;
[0063] Simple vacuum suction device;
[0064] Hydrochloric acid: superior grade, GR, ρ≥1.19 g / mL;
[0065] Nitric acid: superior grade, GR, ρ≥1.42 g / mL;
[0066] Sodium chloride: analytically pure, AR;
[0067] Aqua regia: mix hydrochloric acid and nitric acid in a ratio of 1+3;
[0068] Quantitative filter paper: medium speed, Φ9 cm, double circle brand;
[0069] Sand core crucible: G3, pore size 16-30μm, 30mL;
[0070] Glass funnel, sand core crucible adapter, suction filter bottle, beaker, watch glass, etc.;
[0071] Unless otherwise specified, the water involved in this paper is deionized ...
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Abstract
The invention is a rapid analysis method for acid-insoluble matter in gold cyanide mud, through different pretreatment and measurement steps, the contents of hydrochloric acid insoluble matter, nitric acid insoluble matter and aqua regia insoluble matter in gold cyanide mud are respectively measured, and The content of relevant components was obtained by calculation. In the determination of nitric acid insolubles, the precipitates were repeatedly washed with hot water in the filtration and washing steps until no chloride ions were detected; in the determination of aqua regia insolubles, the precipitates were repeatedly washed with nitric acid in the secondary filtration and washing steps until no silver ions were detected. According to the properties of cyanide gold mud and the technical requirements of industrial production, the present invention proposes a method for measuring the acid-insoluble matter in gold mud for the first time, which fills up the vacancy of the gold mud detection method in the gold dressing and smelting industry.
Description
technical field [0001] The invention relates to an analysis method for acid-insoluble matter in gold mud, in particular to a method for rapidly analyzing the contents of hydrochloric acid-insoluble matter, nitric acid-insoluble matter and aqua regia-insoluble matter in cyanide gold mud by using a gravimetric method. Background technique [0002] Gold cyanide slime refers to the almost black muddy substance with high gold and silver content obtained by replacing zinc powder or zinc wire and other reducing metals from gold-containing precious liquid in the process of hydrometallurgy. Due to the large difference in the nature and composition of the raw ore, the composition of the gold mud obtained by replacing the precious liquid after cyanidation leaching also has certain differences, but in addition to gold and silver, it is mainly composed of copper, iron, lead, zinc and other base metals, as shown in Table 1 . [0003] Table 1 Composition of common gold mud [0004] ...
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IPC IPC(8): G01N5/04
Inventor 单召勇周发军刘瑞强殷晓斌杨海江
Owner 山东黄金冶炼有限公司