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Mineral dressing additive for gold mine and preparation method thereof

A technology of additives and gold mines, applied in flotation, solid separation, etc., to achieve the effect of short process flow, low production cost and increased value

Active Publication Date: 2011-08-31
GUANGXI SENHE HIGH TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Among them, the thiourea method, bromination method, thiosulfate method, chlorination method and iodine method are all being studied, but they are not yet ideal.

Method used

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  • Mineral dressing additive for gold mine and preparation method thereof
  • Mineral dressing additive for gold mine and preparation method thereof

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Experimental program
Comparison scheme
Effect test

preparation Embodiment 1

[0029] The raw material composition and weight fraction are: urea is 40 parts, sodium hexaphosphate is 8 parts, sodium sulfide is 7 parts, sodium bromide is 2 parts, sodium ferrocyanide is 20 parts, soda ash is 35 parts and caustic soda is 6 servings.

[0030] Preparation method: Weigh the raw materials according to the proportion, and add them into the mixer to mix the ingredients together. After mixing evenly, add them to the stainless steel reaction pot and react at 800-900°C for 1.5 hours, then cool down to 30°C and pulverize them with a pulverizer, and then pass through Sieve through a 20-mesh vibrating sieve, and finally pack to obtain mineral processing additive products.

[0031] This product was tested in a gold mine in Guangxi from June to August 2010. Compared with the original cyanidation process, the gold recovery rate increased by 23.1%, and the aqueous solution added with this product used in production is non-toxic for animals to drink.

preparation Embodiment 2

[0033] The raw material composition and weight fraction are: 45 parts of urea, 5 parts of sodium hexaphosphate, 10 parts of sodium sulfide, 20 parts of sodium ferrocyanide, 40 parts of soda ash and 8 parts of caustic soda.

[0034] Preparation method: Weigh the raw materials according to the proportion, and add them into the mixer to mix the ingredients. After mixing evenly, add them to the stainless steel reaction pot and react at 650-750°C for 2 hours, then cool down to 40°C and grind them with a pulverizer. Sieve through a 20-mesh vibrating sieve, and finally pack to obtain mineral processing additive products.

[0035] This product was tested in a gold mine in Guangxi from June to August 2010. Compared with the original cyanidation process, the gold recovery rate increased by 29.6%, and the aqueous solution added with this product used in production is non-toxic for animals to drink.

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Abstract

The invention discloses a mineral dressing additive for a gold mine, which is prepared by taking inorganic substances as raw materials, and reacting at high temperature of 600-950 DEG C for 1-3 hours and pulverizing. The mineral dressing additive for a gold mine comprises the following components in parts by weight: 20-50 parts of urea, 5-10 parts of sodium hexametaphosphate, 5-10 parts of sodium sulfide, 0-10 parts of sodium bromide, 0-30 parts of sodium ferrocyanide, 20-50 parts of soda and 5-10 parts of sodium hydroxide. The product is free of virulent compounds, can not injure human and animals during production and use, can not cause significant pollution, and is environment-friendly. Proven by industrial trial, the product has the advantages of better mineral dressing effect, high recovery rate, simple production method, short process flow, easy technological operation, abundant and cheap raw materials for production, low production cost and better economic benefit and social benefit.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and relates to a gold mineral processing additive and a preparation method thereof. Background technique [0002] Most of the gold mines in my country are associated with multi-components, and the grade is low. Coupled with the aging of the mineral processing equipment, the effective recovery level is generally low, the development and utilization rate is not high, the resource loss and waste are serious, and the gold grade of the abandoned tailings is relatively low. It can still reach 1~6g / t. The existing gold ore beneficiation technologies mainly include: cyanidation, flotation, gravity separation and gravity separation-flotation combined process, etc. The cyanidation method includes direct cyanidation and pretreatment-cyanidation; the gravity separation method generally uses a chute and a shaker. Flotation generally adopts direct flotation after ore or flotation after regrinding. ...

Claims

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Application Information

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IPC IPC(8): B03D1/018
Inventor 阙明
Owner GUANGXI SENHE HIGH TECH CO LTD
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