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Method for extracting tungsten cobalt molybdenum nickel by jointly melting waste tungsten and nickel-molybdenum ore niter

A technology for nickel-molybdenum ore and saltpeter, which is applied in the field of smelting waste tungsten and nickel-molybdenum ore together with saltpeter to extract tungsten, cobalt, molybdenum and nickel, can solve the problems of consumption, multiple oxidants or energy, complex process flow, etc., and achieves short process flow and resource utilization. The effect of high rate and low consumption

Active Publication Date: 2015-03-04
厦门嘉鹭金属工业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned process has a complicated process flow, and needs to go through processes such as roasting, conversion, and leaching, and consumes a lot of oxidant or energy.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A method for extracting tungsten, cobalt, molybdenum and nickel by joint saltpetre smelting of waste tungsten and nickel-molybdenum ore, comprising the following steps:

[0025] (1) Saltpeter smelting: crush the nickel-molybdenum ore, ball mill and pass through a 200-mesh screen, press NaNO 3 : nickel molybdenum ore = 4: 1 (mass ratio) for mixing. The main components of nickel-molybdenum ore (by mass fraction): Mo5.62%, Ni3.12%, Fe7.86%, Mg1.64%, Al4.53%, Si12.87%, S10.21%, Ca5.34 %, P1.76%. The main components (mass fraction) of waste tungsten are: W92%, Co7.5%. Put 500kg of waste tungsten into the furnace, heat the furnace from room temperature to 700°C, and start to put in the mixed NaNO 3 With nickel-molybdenum ore, continuously input 1000kg.

[0026] (2) Leaching: Pour the melt produced in step (1) into 5m 3 water, stirring and leaching for 2h. The leaching rate of tungsten is 98.5%, and the leaching rate of molybdenum is 97.6%.

[0027] (3) Solid-liquid sep...

Embodiment 2

[0031] A method for extracting tungsten, cobalt, molybdenum and nickel by joint saltpetre smelting of waste tungsten and nickel-molybdenum ore, comprising the following steps:

[0032] (1) Saltpeter smelting: crush the nickel-molybdenum ore, ball mill and pass through a 100-mesh screen, press NaNO 3 : nickel molybdenum ore = 5: 1 (mass ratio) for mixing. The main components of nickel-molybdenum ore (by mass fraction): Mo5.62%, Ni3.12%, Fe7.86%, Mg1.64%, Al4.53%, Si12.87%, S10.21%, Ca5.34 %, P1.76%. The main components (mass fraction) of tungsten waste are: W90%, Co8%, Ni1.2%. Put 450kg of waste tungsten into the furnace, heat the furnace from room temperature to 700°C, and start to put in the mixed NaNO 3 With nickel-molybdenum ore, continuously input 1000kg.

[0033] (2) Leaching: Pour the melt produced in step (1) into 5m 3 water, stirring and leaching for 1h. The leaching rate of tungsten is 97.9%, and the leaching rate of molybdenum is 97.3%.

[0034] (3) Solid-liqu...

Embodiment 3

[0038] A method for extracting tungsten, cobalt, molybdenum and nickel by joint saltpetre smelting of waste tungsten and nickel-molybdenum ore, comprising the following steps:

[0039] (1) Saltpeter smelting: the nickel-molybdenum ore is crushed, ball-milled and passed through an 80-mesh screen, and the 3 : nickel-molybdenum ore = 4.5: 1 (mass ratio) for mixing. The main components of nickel-molybdenum ore (by mass fraction): Mo5.32%, Ni3.35%, Fe6.86%, Mg2.64%, Al4.87%, Si10.87%, S12.24%, Ca6.44 %, P1.62%. The main components (mass fraction) of waste tungsten are: W93%, Co6%, Ni0.8%. Put 550kg waste tungsten into the furnace, the temperature of the furnace is 800°C, put the mixed NaNO 3 With nickel-molybdenum ore, continuously input 1200kg.

[0040] (2) Leaching: Pour the melt produced in step (1) into 5m 3 water, stirring and leaching for 1h. The leaching rate of tungsten was 98.14%, and the leaching rate of molybdenum was 97.63%.

[0041] (3) Solid-liquid separation: ...

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Abstract

The invention discloses a method for extracting tungsten cobalt molybdenum nickel by jointly melting waste tungsten and nickel-molybdenum ore niter, and relates to a method for treating and recycling waste tungsten. The method includes the steps: 1) melting the waste tungsten and nickel-molybdenum ore niter; 2) leaching molten masses in water solution; and 3) reducing and leaching cobalt and nickel slag in an acidic system, and further extracting cobalt and nickel by separating leaching agent. The method has the advantages of high efficiency, energy conservation, short technical process, high resource utilization rate and the like. Consumption of auxiliary materials such as oxidizing agents is greatly reduced, and a certain excessive quantity of sodium nitrate is needed in the melting process of waste tungsten niter. Meanwhile, nickel-molybdenum ore is treated, the excessive sodium nitrate can be used, and consumption of the sodium nitrate is reduced.

Description

technical field [0001] The invention relates to a treatment and recovery method of waste tungsten, in particular to a method for extracting tungsten, cobalt, molybdenum and nickel by joint saltpetre smelting of waste tungsten and nickel-molybdenum ore. Background technique [0002] With the rapid development of the economy, the demand for cemented carbide, especially tungsten metal materials, is increasing in the machinery manufacturing, electronics, military, and chemical industries. The grade of tungsten ore in the world is becoming increasingly depleted, the composition is gradually complex, the difficulty of smelting is increasing, and the technical requirements are getting higher and higher. Mineral resources are non-renewable, how to efficiently and fully utilize tungsten resources has always been concerned by the industry. For recycling waste tungsten resources with complex sources, chemical methods are more suitable, among which saltpeter (mainly composed of sodium ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B34/36C22B34/34C22B23/00C22B3/04C22B3/06C22B7/00
CPCY02P10/20
Inventor 宋阜杨金洪钱文连刘会明林建雄谢能建
Owner 厦门嘉鹭金属工业有限公司