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Production and using method of environmentally-friendly noble metal mineral processing reagent

A production method and technology of precious metals, applied in the field of beneficiation agents, can solve problems such as polluted water sources and unstable product quality, and achieve the effects of high safety, low cost, and environmentally friendly products

Active Publication Date: 2012-01-18
广西地生金矿业科技有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This invention has changed the highly toxic hazards of the traditional cyanide smelting of precious metals, and provided a new beneficiation agent for precious metal beneficiation. The disadvantage is that the added strong alkali and carbonate are not carried out according to the stoichiometric ratio. The quality of the product is not stable enough, and when the strong alkali is used in excess, the alkalinity of the ore leaching water discharge will be large and pollute the water source

Method used

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  • Production and using method of environmentally-friendly noble metal mineral processing reagent
  • Production and using method of environmentally-friendly noble metal mineral processing reagent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] The weight ratio of yellow blood salt and urea is 1: 1.5, and yellow blood salt and urea are mixed, put into reactor, in the process of slowly heating up, add pH adjusting agent sodium hydroxide and sodium carbonate, after being heated to molten state, The pH value of the melt is 8-13 (take a small amount of melt test sample to cool and dissolve in water to measure the pH value), keep the melting temperature for 5-10 minutes, and cool to normal temperature to obtain a block-shaped environment-friendly precious metal mineral processing agent.

Embodiment 2

[0024] The weight ratio of yellow blood salt and urea is 1:4. Mix yellow blood salt and urea and put them in the reactor. During the slow temperature rise process, add pH regulator sodium hydroxide and ammonium bicarbonate, and heat to molten state , so that the pH value of the melt is 10-14 (take a small amount of melt test sample and cool it and dissolve it in water to measure the pH value with a glass electrode), keep the melting temperature for 10-20 minutes, and cool to room temperature to obtain a block-shaped environmentally friendly precious metal mineral processing agent .

Embodiment 3

[0026] The weight ratio of yellow blood salt and urea is 1:5, mix yellow blood salt and urea, put it in the reactor, in the process of slowly heating up, add pH regulator sodium hydroxide and sodium bicarbonate, after heating to molten state , so that the pH value of the melt is 12 to 14 (take a small amount of melt test sample and cool and dissolve it in water to measure the pH value), keep the melting temperature for 20-30 minutes, and cool to normal temperature to obtain a block-shaped environmentally friendly precious metal mineral processing agent.

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Abstract

The invention discloses the production method of an environmentally-friendly noble metal mineral processing reagent. The method comprises the following steps: putting potassium ferrocyanide and urea after being mixed into a reactor; adding a pH regulator during the slow temperature rise process; heating to the molten state; taking a small amount of molten material detection samples, cooling and dissolving into water; measuring the pH value, enabling the molten material pH value to be 8-14; keeping the molten temperature for 5-60 minutes; and cooling to the normal temperature, thus the environmentally-friendly noble metal mineral processing reagent is obtained. The product obtained from the invention can be widely applied to the production of noble metal mine, such as the soaking, core spray of gold oxide ores, silver oxide ores and copper oxide ores, also can be used in industrial production industries such as electroplating, and used as medicaments for replacing toxic Cymag; and compared with all the other non-toxic or low-toxicity mineral processing reagents, the noble metal mineral processing reagent has the advantages of good effect, stable drug property, environmentally-friendly product, simple production method, low cost and the like.

Description

technical field [0001] The invention relates to an ore-dressing agent, in particular to a production and use method of an ore-dressing agent with low toxicity and environmental protection, which is aimed at precious metals such as oxidized gold ore, silver oxidized ore, copper oxidized ore and the like. Background technique [0002] At present, the beneficiation of precious metals, especially the beneficiation of gold, silver and copper, mainly adopts the cyanide method, and more than 85% of the gold in the world is extracted by the cyanide method. The production of gold by cyanidation is a relatively mature process. Its advantages are simple process, low production cost, strong adaptability to ore, and high leaching rate; the disadvantages are long leaching time, serious harm to personal safety, agriculture, animal husbandry, and fishery, and environmental pollution. With the increasingly stringent requirements for environmental protection, especially after the promulgatio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B11/00C22B15/00C22B3/12C22B3/14
CPCY02P10/20
Inventor 滕培贵黄奇向龙燕方明智
Owner 广西地生金矿业科技有限公司
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