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Nickel carbonate preparation method

A technology of nickel carbonate and ammonium bicarbonate, applied in the direction of nickel carbonate, etc., can solve the problems of high environmental and process requirements, difficult harmless treatment, etc., and achieve the effects of low production cost, short production cycle and simple process

Inactive Publication Date: 2016-04-20
宁波繁盛商业管理有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The method for preparing nickel carbonate is mainly prepared by the chemical reaction of alkali metal carbonate and nickel sulfate, which has high requirements on the environment and technology, and will produce waste liquid containing alkali metal ions, which is difficult to treat harmlessly.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Take 0.02mol of ammonium nickel sulfate, then add 500mL of distilled water, stir to fully dissolve, add 0.08mol of ammonium bicarbonate at room temperature, stir and dissolve evenly, add to the reaction kettle, seal it and react at 210°C for 4 hours. After the reaction, the product was filtered, washed repeatedly with water, and dried at 120° C. to obtain nickel bicarbonate, which was heated at 260° C. for 2 hours, and analyzed according to the XRD results to be pure nickel carbonate.

Embodiment 2

[0017] Take 0.03 mol of nickel ammonium sulfate, then add 200 mL of distilled water, stir to fully dissolve, add 0.12 mol of ammonium bicarbonate at room temperature, stir and dissolve evenly, add to the reaction kettle, seal it and react at 240°C for 2 hours. After the reaction, the product was filtered, washed repeatedly with water, and dried at 100°C to obtain nickel bicarbonate powder, which was heated at 280°C for 3 hours to obtain nickel carbonate.

Embodiment 3

[0019] Take 0.02mol of ammonium nickel sulfate, then add 50mL of distilled water, stir to fully dissolve, add 0.1mol of ammonium bicarbonate at room temperature, stir and dissolve evenly, add to the reaction kettle, seal it and react at 220°C for 8 hours. After the reaction, the product was filtered, washed repeatedly with water, and dried at 80°C to obtain nickel bicarbonate, which was heated at 295°C for 2 hours to obtain nickel carbonate.

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Abstract

The invention relates to a nickel carbonate preparation method. The method includes the steps that ammonium nickel sulfate is fully dissolved in water, and a nickel salt aqueous solution is prepared; ammonium bicarbonate in a certain proportion is added into the nickel salt aqueous solution and stirred and dissolved at room temperature, the mixture is placed in a high-pressure reaction kettle with a polytetrafluoroethylene lining and heated to 210-250 DEG C in a closed mode, and the temperature is preserved for 2-8 hours; the obtained product is filtered, repeatedly washed with water and dried; after heating at the temperature of 260-295 DEG C, nickel carbonate can be obtained. The preparation method has the advantages of being simple in preparation technology, cheap in raw material, short in production period, mild in condition, high in production purity, uniform in appearance and the like.

Description

technical field [0001] The invention relates to a method for preparing nickel carbonate. Background technique [0002] NiCO 3 It is orthorhombic light green crystal, which will decompose above 300℃. Soluble in ammonia and dilute acid, insoluble in water. It is generally prepared by the reaction of alkali metal carbonate and nickel sulfate, and is often used in electroplating, batteries, ceramic coloring and glazes, etc. Nickel carbonate is an effective precursor for preparing and synthesizing nano-nickel. The nano-nickel prepared by using it has high purity and mild reaction conditions. [0003] The method for preparing nickel carbonate is mainly prepared by the chemical reaction of alkali metal carbonate and nickel sulfate, which has high requirements on the environment and technology, and will produce waste liquid containing alkali metal ions, which is difficult to treat harmlessly. Therefore, it is necessary to develop a preparation method with simple preparation pr...

Claims

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Application Information

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IPC IPC(8): C01G53/06
CPCC01G53/06
Inventor 王正国
Owner 宁波繁盛商业管理有限公司
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