Process for preparing high-purity superfine cobalt powder from copper-cobalt-iron alloy

A technology of ultra-fine cobalt powder and iron alloy, which is applied in the direction of improving process efficiency, etc., can solve the problems of large particle size, unstable products, and difficulty in realizing industrialized production, and achieve the goals of reducing energy consumption, low production cost, and control of technical conditions Effect

Inactive Publication Date: 2012-07-11
HAINAN JINYI NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Its shortcoming is that the cobalt powder obtained is potato-like, and particle size is relatively large; When the body is heated to a certain temperature, in most cases it can reach the boiling point...

Method used

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  • Process for preparing high-purity superfine cobalt powder from copper-cobalt-iron alloy

Examples

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Effect test

Embodiment 1

[0024] A kind of method utilizing copper-cobalt-iron alloy to prepare high-purity ultrafine cobalt powder, its specific process step is as follows:

[0025] (1) Copper-cobalt-iron alloy is atomized into alloy powder: put 50 kg of copper-cobalt-iron alloy block into the heating furnace, add alumina, heat up to 1200 °C and melt, and then atomize into alloy powder on the rotating disc high-speed centrifugal atomization powder making device. 80 mesh alloy powder;

[0026] (2) Pressure leaching of alloy powder inorganic acid: Add 28 liters of water and 15 kg of alloy powder into a 50L stainless steel pressurized reactor, the main components (%) of the alloy powder are: Co: 7.42, Fe: 21.47, Cu: 12.51 , Mn: 0.057, Ca: 0.28, Mg: 1.94, Ni: 0.018, then heat up to 80°C, feed industrial oxygen, control the oxygen pressure 0.2Mpa; add 400 ml of industrial sulfuric acid (96%) after 30 minutes, and heat up to 65 ℃, feed industrial oxygen, control the reaction pressure to 0.4Mpa, add sodium ...

Embodiment 2

[0033] A kind of method utilizing copper-cobalt-iron alloy to prepare high-purity ultrafine cobalt powder, its specific process step is as follows:

[0034] (1) Copper-cobalt-iron alloy is atomized into alloy powder: Put 50 kg of copper-cobalt-iron alloy ingot into the heating furnace, add co-solvent silicon dioxide, heat up to 1300 ℃ and melt, and then pass through the rotating disc high-speed centrifugal atomization powder making device Upper atomization into 130 mesh alloy powder;

[0035] (2) Pressure leaching of alloy powder inorganic acid: Add 28 liters of water and 15 kg of alloy powder into a 50L stainless steel pressurized reactor, the main components (%) of the alloy powder are: Co: 7.42, Fe: 21.47, Cu: 12.51 , Mn: 0.057, Ca: 0.28, Mg: 1.94, Ni: 0.018, then heat up to 80°C, feed industrial oxygen, control the oxygen pressure 0.3Mpa; add 430 ml of industrial sulfuric acid (96%) after 30 minutes, and heat up to 75 ℃, introduce industrial oxygen, control the reaction p...

Embodiment 3

[0042] A kind of method utilizing copper-cobalt-iron alloy to prepare high-purity ultrafine cobalt powder, its specific process step is as follows:

[0043] (1) Copper-cobalt-iron alloy is atomized into alloy powder: Put 50 kg of copper-cobalt-iron alloy ingot into the heating furnace, add the cosolvent fluorite, heat up to 1400 ℃ and melt, and pass it on the rotating disk high-speed centrifugal atomization powder making device Atomized into 180 mesh alloy powder;

[0044] (2) Pressure leaching of alloy powder inorganic acid: Add 28 liters of water and 15 kg of alloy powder into a 50L stainless steel pressurized reactor, the main components (%) of the alloy powder are: Co: 7.42, Fe: 21.47, Cu: 12.51 , Mn: 0.057, Ca: 0.28, Mg: 1.94, Ni: 0.018, then heat up to 80°C, feed industrial oxygen, control the oxygen pressure 0.4Mpa; add 450 ml of industrial sulfuric acid (96%) after 30 minutes, and heat up to 85 ℃, introduce industrial oxygen, control the reaction pressure to 0.8Mpa, a...

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Abstract

The invention discloses process for preparing high-purity superfine cobalt powder from copper-cobalt-iron alloy, which is characterized in that the process comprises the following steps: (1) pulverizing the copper-cobalt-iron alloy into alloy powders; (2) pressurizing the alloy powders with inorganic acid for leaching; (3) adjusting the pH value with carbonate to extract impurities to remove ironand fluoride purified calcium and magnesium; (4) extracting, deeply purifying and cleaning to remove copper, manganese and zinc, to separate cobalt from nickel, and to return cobalt to the extractingsolution to precipitate cobalt for preparation of cobalt carbonate; (5) calcining high-purity cobalt carbonate at a high temperature to produce cobalt oxide; and (6) reducing cobalt oxide with hydrogen to high-purity superfine cobalt powders. The beneficial effects of the process disclosed by the invention are as follows: the process is simple and easy to operate, the cost is low, the technical conditions are easy to control, the cobalt loss is small and the leaching rate is high. After several times of purification, the impurities can be completely removed to obtain high-purity superfine cobalt powders.

Description

technical field [0001] The invention belongs to a wet processing method for copper-cobalt-iron alloy materials, and in particular relates to a process for preparing high-purity ultrafine cobalt powder from copper-cobalt-iron alloy Background technique [0002] Single cobalt ore is very rare in my country, and cobalt products are generally attached to other minerals, such as nickel ore and other mineral materials. Cobalt generally appears as a by-product during copper-nickel fire smelting, its output is small and its cost is high, so my country imports a considerable amount of cobalt products from overseas every year. In order to solve the contradiction between supply and demand with large demand and low output, on the one hand, fully explore cobalt ore resources and improve cobalt smelting technology; on the other hand, make full use of cobalt secondary resources. [0003] The secondary recovery of cobalt mainly focuses on cobalt alloys, cobalt-containing battery materials ...

Claims

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Application Information

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IPC IPC(8): C22B3/06C22B3/26B22F9/22C22B23/00
CPCY02P10/20
Inventor 付春平张虎祥张旭潘永红陈开熙江明慧陈景全
Owner HAINAN JINYI NEW MATERIALS
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