Gold and silver beneficiation agent, and preparation method and application thereof

A mineral processing method and mineral processing agent technology, applied in the field of gold and silver mineral processing agents, can solve the problems of high production cost, complex production process, high toxicity of gold and silver mineral processing agents, etc., and achieve the effect of low cost and convenient production

Pending Publication Date: 2021-03-19
陆云骏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, these methods also have relatively large disadvantages, mainly: the toxicity of gold and silver beneficiation agents is high, and the production process is complicated, resulting in high production costs

Method used

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  • Gold and silver beneficiation agent, and preparation method and application thereof
  • Gold and silver beneficiation agent, and preparation method and application thereof

Examples

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preparation example Construction

[0038] The present invention further proposes a kind of preparation method of gold-silver beneficiation agent as mentioned above, figure 1 For the schematic flow diagram of an embodiment of the preparation method of the gold and silver mineral processing agent proposed by the present invention, please refer to figure 1 , the preparation method of described gold-silver beneficiation agent comprises the following steps:

[0039] S10, add urea and thiourea into the airtight container, heat the material for the first time to completely melt, then continue to add sodium hydroxide, sodium carbonate, sodium ferrocyanide, sodium sulfide and sodium sulfite into the airtight container, and Continue to heat for the second time to make the material completely melt and then keep it warm to obtain the melt.

[0040] Preferably, in this step, the heating temperature of the first heating is 180°C-200°C. At this temperature, urea and thiourea rapidly become molten.

[0041] The heating temp...

Embodiment 1

[0058] According to parts by weight, take 15 parts of urea and 8 parts of thiourea, mix them evenly, heat to 200°C, after completely melting, add 5 parts of sodium ferrocyanide, 6 parts of sodium hydroxide, 10 parts of sodium carbonate, and 2 parts of sodium sulfide 1. 2 parts of sodium sulfite, rapidly heated to 900°C, kept for 3 hours, poured out the melted matter, cooled and pulverized to obtain gold and silver extractant. NH produced during the preparation 3 , CO 2 , SO 2 After the exhaust gas is cooled, absorb it with sodium chloride solution.

Embodiment 2

[0060] According to parts by weight, take 20 parts of urea and 12 parts of thiourea and mix evenly, heat to 180°C, after melting completely, add 5 parts of sodium ferrocyanide, 8 parts of sodium hydroxide, 15 parts of sodium carbonate, and 2 parts of sodium sulfide 1. 2 parts of sodium sulfite, rapidly heated to 900°C, kept for 3 hours, poured out the melted matter, cooled and pulverized to obtain gold and silver extractant. NH produced during the preparation 3 , CO 2 , SO 2 After the exhaust gas is cooled, absorb it with sodium chloride solution.

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Abstract

The invention discloses a gold and silver beneficiation agent and a preparation method and application thereof, and relates to the technical field of mineral flotation. The gold and silver beneficiation agent comprises the following components: sodium ferrocyanide, urea, thiourea, sodium hydroxide, sodium carbonate, sodium sulfide and sodium sulfite. According to the gold and silver beneficiationagent, during beneficiation, active components in the gold and silver beneficiation agent and gold or silver in ore form a complex compound, so that the gold or the silver enters a solution from the ore, gold or silver leaching is achieved, and the gold and silver beneficiation agent has the advantages of being non-toxic, convenient to produce and low in cost, when the gold and silver beneficiation agent is used for gold and silver beneficiation, the cost is reduced, and the toxicity is lower.

Description

technical field [0001] The invention relates to the technical field of mineral flotation, in particular to a gold-silver beneficiation agent, a preparation method of the gold-silver beneficiation agent and its application. Background technique [0002] Since the 19th century, cyanide has been widely used in gold and silver ore leaching, and its process operation is simple, the consumption of chemicals is small, and the production cost is low. However, cyanide also has many disadvantages in the gold and silver ore leaching process, such as: the leaching rate of fine-grained gold minerals is low; the high-grade tailings of cyanide leaching are difficult to sort; The process has strict requirements; the use of cyanide has seriously polluted the environment. [0003] In order to solve the various drawbacks of cyanide, a large number of researches on environment-friendly chemicals have been carried out at home and abroad, in order to find new types of environment-friendly agents...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B11/08C22B3/12
CPCC22B11/08C22B11/04C22B3/12Y02P10/20
Inventor 陆云骏
Owner 陆云骏
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