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Gold extracting agent and preparation method thereof

A gold extraction agent and raw material technology, applied in the field of gold extraction agent and its preparation, can solve the problems of poor direct leaching effect, interference, unsatisfactory gold extraction effect, etc., and achieve short leaching time, fast recovery, and convenient storage Effect

Active Publication Date: 2015-09-16
圣的新材料(长兴)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In addition, the cyanidation leaching process is easily interfered by impurities such as copper, iron, lead, zinc, antimony, tellurium, arsenic, and sulfur; direct leaching of refractory gold ores with fine-grained gold, high arsenic, high sulfur, and organic carbon content The effect is very poor, and complex pretreatment procedures are required, followed by cyanidation or complex enhanced leaching methods, but sometimes the satisfactory gold extraction effect is still not obtained

Method used

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  • Gold extracting agent and preparation method thereof
  • Gold extracting agent and preparation method thereof
  • Gold extracting agent and preparation method thereof

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preparation example Construction

[0038] Please refer to figure 1 , the preparation method of the above-mentioned gold extraction agent that the present invention also provides, comprises the following steps:

[0039] Step 101: mixing all raw material components and kneading into a slurry to obtain a mixed slurry;

[0040] In step 101, after mixing the materials, they are kneaded under high temperature conditions, so that all components are melted and mixed, and a mixed slurry is obtained. As a preference, this step can specifically be carried out according to the following operations: after mixing all the raw material components, airtightly knead at 480-520°C for 30-40 minutes, and then perform a natural oxidation reaction under ventilated conditions for 60-70 minutes; The process can realize the melting of all components, and then ventilate after melting, so that the outside air can contact the slurry, and carry out a natural oxidation reaction, so that the gold extraction agent contains oxygen and improve ...

Embodiment 1

[0052] The gold extracting agent provided by the embodiments of the present invention, in parts by weight, its raw material components include:

[0053] 12 parts of sodium hexametaphosphate, 7 parts of sodium cyanate, 9.4 parts of sodium ferrocyanide, 10.3 parts of sodium sulfide, 13.3 parts of sulfur, 10.8 parts of sodium bromide, 6.7 parts of sodium chloride, 8.6 parts of manganese dioxide, 12.2 parts of urea parts, industrial soda ash 9.7 parts.

[0054] Preparation

[0055] S11: After mixing all raw material components, airtight kneading at 480°C for 30 minutes, and then natural oxidation reaction under ventilated conditions for 60 minutes;

[0056] Wherein, the natural oxidation reaction is controlled at 480-520°C.

[0057] S12: smelting the mixed slurry once to aggregate it into blocks and smelting it a second time to obtain the smelted slurry;

[0058] Wherein, the temperature of the first smelting is 850°C, and the time is 4 hours;

[0059] The temperature of the s...

Embodiment 2

[0065] The gold extracting agent provided by the embodiments of the present invention, in parts by weight, its raw material components include:

[0066] 12.4 parts of sodium hexametaphosphate, 7.4 parts of sodium cyanate, 9.8 parts of sodium ferrocyanide, 10.7 parts of sodium sulfide, 13.7 parts of sulfur, 10.4 parts of sodium bromide, 6.3 parts of sodium chloride, 8.2 parts of manganese dioxide, 11.8 parts of urea parts, industrial soda ash 9.3 parts.

[0067] Preparation

[0068] S21: After mixing all the raw material components, airtight kneading at 520°C for 30-40 minutes, and then natural oxidation reaction under ventilated conditions for 60-70 minutes;

[0069] Wherein, the natural oxidation reaction is controlled at 480-520°C;

[0070] S22: smelting the mixed slurry once to aggregate it into blocks and smelting it a second time to obtain a smelted slurry;

[0071] Wherein, the temperature of the first smelting is 850°C, and the time is 5 hours;

[0072] The temperat...

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Abstract

The invention provides a gold extracting agent and a preparation method thereof, and belongs to the technical field of gold extraction. The gold extracting agent comprises the raw material components in parts by weight: 12-12.4 parts of sodium hexametaphosphate, 7-7.4 parts of sodium cyanate, 9.4-9.8 parts of sodium ferrocyanide, 10.3-10.7 of sodium sulfide, 13.3-13.7 parts of sulphur, 10.4-10.8 parts of sodium bromide, 6.3-6.7 parts of sodium chloride, 8.2-8.6 parts of manganese dioxide, 11.8-12.2 parts of urea, and 9.3-9.7 parts of industrial sodium carbonate. The gold extracting agent is alkaline, and has the advantages of low toxicity, environmental protection, short leaching time and convenient transportation and keeping and the like; in addition, the gold extracting rate is high; and the gold extracting agent is quite suitable for use as a novel gold extracting agent for heap leaching, pond leaching and carbon paste production processes of micro-fine particle gold-containing oxidized ores.

Description

technical field [0001] The invention relates to the technical field of gold extraction, in particular to a gold extraction agent and a preparation method thereof. Background technique [0002] The cyanidation gold extraction process has the characteristics of simple and easy operation, strong adaptability, high leaching rate, and stable production process. Since the 19th century, cyanidation has been greatly developed and has long dominated the gold industry. [0003] However, as humans pay more and more attention to environmental protection, the use of highly toxic compounds - cyanide (mainly sodium cyanide) is more and more restricted. GBZ1-2010 "Hygienic Standards for Design of Industrial Enterprises" clearly stipulates the allowable concentration of cyanide in ground water and the allowable concentration of hydrogen cyanide gas in workshop air. [0004] In addition, the cyanidation leaching process is easily interfered by impurities such as copper, iron, lead, zinc, ant...

Claims

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Application Information

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IPC IPC(8): C22B11/00
Inventor 潘新华
Owner 圣的新材料(长兴)有限公司
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