A method for leaching and recovering valuable metals from cobalt-nickel-copper-manganese-iron alloy

A technology for valuable metals and ferroalloys, applied in the field of leaching and recovering cobalt and nickel from copper, cobalt, nickel, copper, manganese and ferroalloys. It can solve problems such as difficult processing, achieve good leaching performance, avoid impurities, toxic and harmful elements, and the loss of valuable metals little effect

Active Publication Date: 2017-11-17
CHANGSHA RES INST OF MINING & METALLURGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for cobalt-nickel-copper-manganese-iron alloys with high manganese content, if the direct leaching treatment is required, the subsequent separation process requires demanganization, which is difficult to process

Method used

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  • A method for leaching and recovering valuable metals from cobalt-nickel-copper-manganese-iron alloy

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Embodiment 1

[0030] A method for leaching and recovering valuable metals from cobalt-nickel-copper-manganese-iron alloy of the present invention, its process flow chart is as follows figure 1 shown, including the following steps:

[0031]1) Put 30kg of cobalt-nickel-copper-manganese-iron alloy (mass content of main components are Co 15.62%, Ni 4.80%, Cu12.79%, Fe 24.44%, Mn 36.26%) into a 50kg intermediate frequency electric furnace, set the melting temperature to 1550°C , the cobalt-nickel-copper-manganese-iron alloy is melted to form an alloy melt.

[0032] 2) Add 6.0kg of silica (SiO 2 The mass content is 98%), and the mixed gas of air and oxygen is passed into the alloy melt simultaneously (wherein the air flow rate is 3m 3 / h, oxygen flow rate 2.5m 3 / h) blowing slagging (MnO-SiO 2 ), by controlling the appropriate oxygen partial pressure, the valuable metals copper, cobalt, nickel and iron in the furnace are hardly oxidized, while most of the manganese is oxidized.

[0033] 3) S...

Embodiment 2

[0037] A method for leaching and recovering valuable metals from cobalt-nickel-copper-manganese-iron alloy of the present invention, its process flow chart is as follows figure 1 shown, including the following steps:

[0038] 1) Put 800kg of cobalt-nickel-copper-manganese-iron alloy (mass fractions of main components are respectively Co 28.52%, Ni 6.71%, Cu19.33%, Fe 11.47%, Mn 25.51%, P 4.29%) in a 1000kg intermediate frequency electric furnace, set The melting temperature is 1450°C, and the cobalt-nickel-copper-manganese-iron alloy is melted to form an alloy melt.

[0039] 2) Add 50kg of silica (SiO 2 The mass content is 98%) and the mixture of manganese silicon alloy (Si mass content is 18%) (wherein the silica mass accounts for 90%, the manganese silicon alloy mass accounts for 10%), and the mixture of air and oxygen is introduced into the alloy melt at the same time Mixed gas (where the air flow rate is 15.0m 3 / h, oxygen flow rate 10.0m 3 / h) blowing slagging (MnO-Si...

Embodiment 3

[0044] A method for leaching and recovering valuable metals from cobalt-nickel-copper-manganese-iron alloy of the present invention, its process flow chart is as follows figure 1 shown, including the following steps:

[0045] 1) Put 40kg of cobalt-nickel-copper-manganese-iron alloy (mass fractions of main components are respectively Co 10.63%, Ni 7.71%, Cu29.57%, Fe 35.16%, Mn 11.90%) into a 50kg intermediate frequency electric furnace, and set the melting temperature to 1500 °C, the cobalt-nickel-copper-manganese-iron alloy is melted to form an alloy melt.

[0046] 2) Add 1.25kg of silica (SiO 2 The mass content is 98%), and the mixed gas of air and oxygen is passed into the alloy melt simultaneously (wherein the air flow rate is 3.5m 3 / h, oxygen flow rate 5.0m 3 / h), blowing slagging (MnO-SiO 2 ), by controlling the appropriate oxygen partial pressure, the valuable metals copper, cobalt, nickel and iron in the furnace are hardly oxidized, while most of the manganese is ...

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Abstract

The invention discloses a method for leaching and recovering valuable metals from a cobalt-nickel-copper-manganese-iron alloy, which comprises the following steps: (1) melting the cobalt-nickel-copper-manganese-iron alloy to form an alloy melt, wherein the cobalt-nickel-copper-manganese-iron alloy The mass fraction of manganese is not less than 5%; (2) adding silicon-containing material to the alloy melt while feeding gas to carry out blowing and slagging; (3) separating the obtained slag from the melt; ( 4) Atomizing the separated slag-forming melt into alloy powder, wherein the mass fraction of Mn in the alloy powder is 0.5%-20%; (5) Pickling the alloy powder to recover valuable metals. In the present invention, by adding silicon-containing materials and manganese in the cobalt-nickel-copper-manganese-ferroalloy, a low melting point and good fluidity MnO-SiO2 slag type is formed, so as to achieve the effect of manganese removal, with good manganese removal effect and less loss of valuable metals advantage.

Description

technical field [0001] The invention belongs to the field of metallurgy, and relates to a method for leaching and recovering valuable metals from cobalt-nickel-copper-manganese-iron alloys, in particular to a process for recovering cobalt, nickel and copper by leaching cobalt-nickel-copper-manganese-iron alloys. Background technique [0002] Cobalt-nickel-copper-manganese-iron alloy is an intermediate product obtained by smelting waste ion batteries plus pyrolusite and other slagging agents. The mass content of cobalt, copper, nickel, iron and manganese is high: Co 5-35%, Ni 1-10%, Cu 5-35%, Fe 10-50%, Mn 5-40%, have high economic value. But at present, there is no mature technology that can make good use of the cobalt-nickel-copper-manganese-iron alloy. [0003] At present, the recovery and treatment process of alloy materials containing cobalt, copper, nickel, iron and manganese elements that can be found in literature resources, the manganese content in the alloy materia...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B3/08C22B15/00C22B23/00B22F9/08
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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