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Process for removing base metals in platinum group metal containing material

A technology for platinum group metals and base metals, applied in the field of removing base metals, can solve problems such as difficulty in separating noble and base metals, and achieve the effects of reducing platinum group metal losses, reasonable connection and simple operation

Active Publication Date: 2014-01-22
JINCHUAN GROUP LIMITED
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a process for removing base metals from materials containing platinum group metals with simple process and short flow for the problem of difficult separation of noble and base metals in platinum group metal solutions

Method used

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  • Process for removing base metals in platinum group metal containing material
  • Process for removing base metals in platinum group metal containing material
  • Process for removing base metals in platinum group metal containing material

Examples

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Embodiment 1

[0016] A process for removing base metals from materials containing platinum group metals. 100g of materials containing platinum group metals is added to 320ml of water for dissolution, wherein the water in the materials containing platinum group metals is 45.56g, the base metal nickel is 2.84g, and the base metals contain Copper 2.62g. Use 80ml of 12mol / L hydrochloric acid to adjust the acidity of the solution to 2.5mol / L, and the liquid-solid mass ratio of the acidity-adjusted solution obtained is 4:1. Stir and raise the temperature of the solution with adjusted acidity to 80°C on the electric heating plate. At this time, chlorine gas is introduced to start chlorination and dissolution. The flow rate of chlorine gas is 15L / h. 8 hours. After the chlorinated solution is finely filtered to remove the insoluble residue, the total volume of the filtrate plus washing water is 412ml, then add 30% sodium hydroxide solution to the filtrate to adjust the pH value of the filtrate to 0...

Embodiment 2

[0025] A process for removing base metals from materials containing platinum group metals. 100g of materials containing platinum group metals is added to 375ml of water for dissolution, wherein the water in the materials containing platinum group metals is 34.34g, the base metal nickel is 5.44g, and the base metal copper It is 16.97g. Use 125ml of 12mol / L hydrochloric acid to adjust the acidity of the solution to 3mol / L, and the liquid-solid mass ratio of the acidity-adjusted solution obtained is 5:1. Stir and raise the temperature of the solution to 75°C on the electric heating plate. At this time, chlorine gas is introduced to start chlorination and dissolution. The flow rate of chlorine gas is 18L / h. During the process of chlorination and dissolution, the temperature is maintained at 75°C. The reaction time for chlorination and dissolution is 12 hours. After the chlorinated solution is finely filtered to remove the insoluble residue, the total volume of the filtrate plus wa...

Embodiment 3

[0035] A process for removing base metals from materials containing platinum group metals. Add 100kg of materials containing platinum group metals to 320L of water for dissolution, wherein the water in the materials containing platinum group metals is 38.88kg, the base metal nickel is 2.69kg, and the base metal copper It is 21.64kg. Use 80L12mol / L hydrochloric acid to adjust the acidity of the solution to 2.5mol / L, and the liquid-solid mass ratio of the acidity-adjusted solution obtained is 5:1. Stir and feed chlorine gas to raise the temperature of the solution to 75°C. At this time, feed chlorine gas to start chlorination and dissolution. The flow rate of chlorine gas is 24L / h. During the process of chlorination and dissolution, the temperature is maintained at 80°C. The reaction time for chlorination and dissolution is 8 hours. After the chlorinated solution is finely filtered to remove the insoluble residue, add a total of 450L of washing water to the filtrate and transfer...

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Abstract

A process for removing base metals in a platinum group metal containing material comprises the following steps: taking of the platinum group metal containing material (slag, secondary resources, and the like)-chlorination dissolution-acid adjusting of a dissolution solution-precipitation by use of organic reducing reagent ammonium oxalate-filtering separation of the base metals. The process of the invention is wide in adaptability to materials, simple in operation, reasonable in process connection, short in cycle, low in cost and stable in product quality. Separation of the base metals and noble metals can be performed by directly using raw mineral materials, and according to the condition of the materials, part of technological processes can be connected to reduce the processes and farthest improve the efficiency of separation of the base metals. According to the process of the invention, the copper and nickel removal rate of the platinum group metal containing material is greater than 95%, the content of platinum group metals in copper nickel deposition slag is less than 300g / t, copper, nickel and the like in the slag can be comprehensively recovered, the process structure is brief, the precipitating agent ammonium oxalate is an organic reagent, may not change the solution system, and may not impact noble metal separation purification and copper nickel recovery systems, and the product yield and quality of the platinum group metals can be greatly improved.

Description

technical field [0001] The invention belongs to the technical field of metal separation, and in particular relates to a process for removing base metals from platinum-group metal-containing materials such as platinum-group metal-containing solution, slag or secondary resources. Background technique [0002] Since platinum group metals are usually associated with copper and nickel sulfide ores, impurities such as copper and nickel are inevitably contained in platinum group metal concentrates, which brings certain difficulties to the separation and purification of platinum group metals. Therefore, before the separation and purification of platinum group metals, base metals must be removed as much as possible to ensure the product quality and yield of platinum group metals. For this reason, domestic and foreign platinum group metal manufacturers and scientific research institutes have carried out a lot of work, and developed a variety of new processes and new materials, such as...

Claims

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Application Information

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IPC IPC(8): C22B11/00C22B3/44
CPCY02P10/20
Inventor 陈大林黄国生李明严汝龙潘从明张燕朱纪念赵彦才
Owner JINCHUAN GROUP LIMITED
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