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A method for recovering valuable metals in a multi-metal alloy containing nickel/cobalt

A valuable metal and multi-metal technology, applied in the field of metallurgy and chemical industry, can solve the problems of failure to effectively improve the leaching performance of alloys, unsatisfactory recovery rate of valuable metals, and poor economic benefits of the process, so as to achieve significant environmental protection advantages and furnace use efficiency High, good leaching performance

Active Publication Date: 2018-03-09
CHANGSHA RES INST OF MINING & METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0016] The above-mentioned treatment methods do not require smelting pretreatment of the alloy, and their biggest disadvantage is that none of them can effectively improve the acid / alkali leaching performance of the alloy, resulting in relatively harsh leaching conditions, or the need for pressurization, roasting, or the use of extremely easy Nitric acid, hydrochloric acid, etc. that pollute the environment, resulting in complex process operations, serious environmental pollution, and poor economic benefits
[0022] Based on the above, although there are various ways to process and recover valuable metals such as nickel and cobalt from waste nickel (cobalt) alloy materials, there are many unreasonable things: if the recovery rate of valuable metals is not ideal, magnetic separation is difficult to effectively recover and obtain High-purity Ni and Co resources; or the operating conditions are harsh, or the flux required for smelting is high in price and dosage, and the economic benefit of the process is poor; or the risk of safety and environmental protection is high. Therefore, it is urgent to develop a simple and universally applicable process in this field. It is a treatment process with high efficiency, good comprehensive recovery effect, good economy, safety and environmental protection

Method used

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  • A method for recovering valuable metals in a multi-metal alloy containing nickel/cobalt
  • A method for recovering valuable metals in a multi-metal alloy containing nickel/cobalt
  • A method for recovering valuable metals in a multi-metal alloy containing nickel/cobalt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0054] a kind of like figure 1 Shown the present invention reclaims the method for valuable metal from cobalt-copper white alloy, comprises the following steps:

[0055] (1) Put 800kg of cobalt-copper white alloy (mass content of main components are respectively Co 38.87%, Fe 32.45%, Cu13.45%, Si 10.15%) into a 1000kg intermediate frequency electric furnace for desiliconization quenching and tempering treatment, set the melting temperature At 1475°C, the cobalt-copper white alloy is melted to form an alloy melt.

[0056] (2) Add 20kg pyrolusite (Mn mass content 39.86%, SiO 2 mass content 13.33%), and at the same time feed nitrogen into the alloy melt (flow rate 10 ~ 25m 3 / h) blowing slagging (MnO-SiO 2 ), by controlling the appropriate oxygen partial pressure, the valuable metals copper, cobalt and iron in the furnace are hardly oxidized, while most of the manganese is oxidized.

[0057] (3) Separating the slagging generated in step (2) from the alloy melt.

[0058] (4) ...

Embodiment 2

[0061] a kind of like figure 1 Shown the present invention reclaims the method for valuable metal from cobalt-copper white alloy, comprises the following steps:

[0062] (1) Put 800kg of cobalt-copper white alloy (mass content of main components are Co 25.87%, Fe 40.05%, Cu15.45%, Si 15.16%) into a 1000kg intermediate frequency electric furnace for desiliconization quenching and tempering treatment, set the melting temperature At 1550°C, the cobalt-copper white alloy is melted to form an alloy melt.

[0063] (2) Add 5.0kg metal manganese (Mn content 99%) and 12.0kg manganese dioxide powder (MnO 2 content of 95%), and at the same time, a mixed gas of air and oxygen is passed into the surface of the alloy melt (wherein the air flow rate is 12m 3 / h, oxygen flow rate 5m 3 / h,) for blowing slagging (MnO-SiO 2 ), by controlling the appropriate oxygen partial pressure, the valuable metals copper, cobalt and iron in the furnace are hardly oxidized, while most of the manganese is ox...

Embodiment 3

[0068] a kind of like figure 1 Shown the present invention reclaims the method for valuable metal from cobalt-copper white alloy, comprises the following steps:

[0069] (1) Put 40kg of cobalt-copper white alloy (mass content of main components are Co 33.83%, Fe 37.10%, Cu16.88%, Si 5%) into a 50kg intermediate frequency electric furnace for desiliconization quenching and tempering treatment, set the melting temperature At 1430°C, the cobalt-copper white alloy is melted to form an alloy melt.

[0070] (2) Add 6.0kg metal manganese (99% Mn content) at one time to the alloy melt, and simultaneously feed air into the alloy melt interior and surface (wherein the air flow rate is 2.5m 3 / h) blowing slagging (MnO-SiO 2 ), by controlling the appropriate oxygen partial pressure, the valuable metals copper, cobalt and iron in the furnace are hardly oxidized, while most of the manganese is oxidized.

[0071] (3) Slag removal once, the slag generated in step (2) is separated from the ...

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Abstract

A method for recovering valuable metals in a nickel / cobalt-containing multi-metal alloy comprises the following steps: a multi-metal allow is molten to form an alloy melt; the multi-metal alloy contains at least one of nickel and cobalt; at least one of a manganese-containing material and a silicon-containing material is added into the alloy melt, and gas is pumped in for converting and slagging; the obtained slag is separated from the alloy metal, while manganese element is reserved in the alloy metal; the alloy melt from which slag is separated is atomized to prepare Mn-containing alloy powder; the obtained alloy powder is subjected to acid pickling to recover valuable metals. The method adopting the technical scheme has the advantages of making the best of resources, being high in raw material utilization ratio and furnace body service efficiency, low in cost, simple to operate, energy-saving, environment-friendly and the like.

Description

technical field [0001] The invention relates to the technical field of metallurgy and chemical industry, in particular to a method for treating alloy materials containing nickel or cobalt. Background technique [0002] Cobalt and nickel are typical alloying elements. Therefore, many intermediate products in the smelting and processing of nickel-cobalt resources are in the form of alloy products, such as copper-cobalt white alloy, rough nickel-iron, etc., and nickel-cobalt terminal products are even more extensive. It is used in petrochemical, electronics, aerospace, military and other industries in the form of alloy products such as stainless steel, high-temperature alloys, magnetic materials and catalysts. With the rapid development of the modern economy, more and more cobalt-nickel alloy scraps are produced and become an important raw material for nickel-cobalt smelting. [0003] At present, according to the different types of cobalt-nickel alloy waste, researchers have p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/08C22B15/00C22B23/00
CPCY02P10/20
Inventor 肖松文任国兴毛拥军沈裕军谢美求潘炳郑铁铮陈坚樊友奇赵早文王奉刚钟山夏星
Owner CHANGSHA RES INST OF MINING & METALLURGY
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