Rapid analysis method for acid insoluble substances in cyanide gold slime

A gold cyanide mud and rapid analysis technology, applied in the direction of weighing by removing certain components, can solve the problem of inapplicability of gold cyanide mud, and achieve the effect of easy mastery, easy promotion, and low detection cost

Active Publication Date: 2015-09-09
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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  • Rapid analysis method for acid insoluble substances in cyanide gold slime

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Embodiment Construction

[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 deioni...

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Abstract

The invention discloses a rapid analysis method for acid insoluble substances in cyanide gold slime. The rapid analysis method comprises the following steps: through different pretreatment and determination steps, respectively determining the contents of hydrochloric acid insoluble substances, nitric acid insoluble substances and aqua regia insoluble substances in the cyanide gold slime; and calculating the contents of related components. During the process of determining the content of nitric acid insoluble substances, precipitate is repeatedly washed with hot water in the filtering and washing steps until no chloridion is detected; and during the process of determining the content of the aqua regia insoluble substances, precipitate is repeatedly washed with nitric acid in secondary filtering and washing steps until no silver ion is detected. A determination method for the acid insoluble substances in gold slime is provided for the first time according to the properties of the cyanide gold slime and the requirements of the industrial production technology; and the gap in the detection method for the gold slime related to the gold mineral smelting and industry is filled up.

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] ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
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
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