Preparation method for cobalt carbonate with aluminium adulteration

A cobalt carbonate and ammonium bicarbonate solution technology, applied in the direction of cobalt carbonate, etc., can solve the problems of poor dispersion and uneven particle size of cobalt carbonate, and achieve the effect of good dispersion, uniform particle size and low adhesion

Inactive Publication Date: 2019-01-04
JINGMEN GEM NEW MATERIAL
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  • Abstract
  • Description
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Problems solved by technology

[0004] In view of this, the main purpose of the present invention is to provide a method for preparing aluminum-doped cobalt carbonate, which solves the problems of uneven particle size and poor dispersion of cobalt carbonate in the prior art

Method used

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  • Preparation method for cobalt carbonate with aluminium adulteration
  • Preparation method for cobalt carbonate with aluminium adulteration
  • Preparation method for cobalt carbonate with aluminium adulteration

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preparation example Construction

[0032] The invention provides a method for preparing aluminum-doped cobalt carbonate, which is realized through the following steps:

[0033] Step 1, get a certain amount of cobalt chloride, add 50~70 ℃ of water to it, and stir to dissolve, be mixed with the cobalt concentration of cobalt and be the cobalt chloride solution of 108~112g / L; Get a certain amount of ammonium bicarbonate, Add water at 50-60°C, stir and dissolve, and prepare an ammonium bicarbonate solution with an ammonia concentration of 220-230g / L for later use; use water at a certain temperature to prepare cobalt chloride and ammonium bicarbonate solutions respectively, so that Cobalt chloride and ammonium bicarbonate have been fully dissolved, and the dispersibility of cobalt ions in the cobalt chloride solution and the dispersibility of carbonate ions in the ammonium bicarbonate solution have also been improved;

[0034] Step 2, adding aluminum chloride hexahydrate (AlCl 3 ·6H 2 O), stir evenly, obtain the d...

Embodiment 1

[0048] Step 1) Get a certain amount of cobalt chloride and put it into the solution tank, add water at 50°C therein, and stir and dissolve, and prepare a cobalt chloride solution whose concentration of cobalt (Co) is 108g / L; then take a certain amount Put the ammonium bicarbonate into another solution tank, add water at 50°C therein, and stir to dissolve, and prepare an ammonium bicarbonate solution with an ammonia concentration of 220g / L for subsequent use;

[0049] Step 2) Take 3L prepared cobalt chloride solution, and add 1340.78gAlCl 3 ·6H 2 O, stir evenly, obtain the doping cobalt chloride solution that the concentration of aluminum (Al) is 50g / L (5%);

[0050] Step 3) degreasing the prepared ammonium bicarbonate solution and the doped cobalt chloride solution respectively;

[0051] Step 4) Add 1.5L of pure water into the reactor as the bottom liquid, and heat the pure water so that the temperature of the bottom liquid reaches 50°C, and then add the doped cobalt chlorid...

Embodiment 2

[0056] Step 1) Get a certain amount of cobalt chloride and put it into the solution tank, add water at 60°C therein, and stir and dissolve to prepare a cobalt chloride solution whose concentration of cobalt (Co) is 110g / L; then take a certain amount Put the ammonium bicarbonate into another solution tank, add water at 55°C therein, and stir to dissolve, and prepare an ammonium bicarbonate solution with an ammonia concentration of 225g / L for subsequent use;

[0057] Step 2) Take 3L of prepared cobalt chloride solution, and add 804.74gAlCl 3 ·6H 2 O, stir evenly, obtain the doped cobalt chloride solution that the concentration of aluminum (Al) is 30g / L (3%);

[0058] Step 3) degreasing the prepared ammonium bicarbonate solution and the doped cobalt chloride solution respectively;

[0059] Step 4) Add 1.5L of pure water into the reactor as the bottom liquid, and heat the pure water to make the temperature of the bottom liquid reach 55°C, then add the doped cobalt chloride solut...

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Abstract

The invention discloses a preparation method for cobalt carbonate with aluminium adulteration. The method comprises the steps that 1) a cobalt chloride solution and an ammonium bicarbonate solution are prepared; 2) aluminium chloride hexahydrate is added into the cobalt chloride solution, the mixture is uniformly stirred to obtain a doped cobalt chloride solution; 3) oil removal is separately conducted on the ammonium bicarbonate solution and the doped cobalt chloride solution; 4) after oil removal, the doped cobalt chloride solution reacts with the ammonium bicarbonate solution to produce doped cobalt carbonate; 5) the doped cobalt carbonate is filtered and washed three times; 6) the washed doped cobalt carbonate is dried and broken under the negative condition to obtain cobalt carbonatepowder with aluminium adulteration. The preparation method is characterized in that firstly, the aluminium chloride hexahydrate is added into the cobalt chloride solution, full exchanging and mixing are conducted on the aluminium element and the cobalt element on the ion level, therefore the dispersity of the aluminium ions in the cobalt chloride solution is improved, and the particle size of theprepared cobalt carbonate with cadmium adulteration is uniform, and the dispersity is good.

Description

technical field [0001] The invention belongs to the technical field of cobalt carbonate preparation and relates to a method for preparing aluminum-doped cobalt carbonate. Background technique [0002] Cobalt is an excellent adhesive for cemented carbide. The morphology, particle size and bulk density of cobalt powder have a certain influence on the performance of cemented carbide. Generally, cobalt powder is mostly made of cobalt carbonate as a precursor, and cobalt powder has a great influence on the precursor. The morphology of cobalt carbonate has great dependence and inheritance, and it has a wide range of uses in industrial technology fields such as electronics, metallurgy, diamond tools and cemented carbide. [0003] With the development of science and technology, in the special industry of diamond tools and cemented carbide, it is necessary to use some cobalt carbonate with special crystal phase to prepare cobalt powder with small particle size, uniform particle size ...

Claims

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Application Information

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IPC IPC(8): C01G51/06
CPCC01G51/06C01P2004/03
Inventor 许开华郭苗苗陈元骁吴伟
Owner JINGMEN GEM NEW MATERIAL
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