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High-purity ultrafine oxalate ferromanganese and preparation method thereof

A technology of ferromanganese oxalate and ferromanganese acid, which is applied in the direction of carboxylate preparation, carboxylate preparation, chemical instruments and methods, etc. It can solve the problems of uneven particle size, large particle size of ferromanganese oxalate, and low product purity, etc. problems, to achieve the effect of narrow particle size distribution range, low cost and simple process

Active Publication Date: 2016-10-12
ZAOZHUANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to overcome the defects of ferromanganese oxalate particles with large particle size, uneven particle size and low product purity in the preparation method of the prior art, and provide a high-purity ultra-high-purity product with simple process, low cost and easy industrial production. Preparation method of fine ferromanganese oxalate

Method used

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  • High-purity ultrafine oxalate ferromanganese and preparation method thereof
  • High-purity ultrafine oxalate ferromanganese and preparation method thereof
  • High-purity ultrafine oxalate ferromanganese and preparation method thereof

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Effect test

Embodiment 1

[0025] A preparation method of high-purity ultrafine ferromanganese oxalate comprises the steps respectively:

[0026] (1) Weigh 83.4kg of industrial grade FeSO 4 ·7H 2 O (product content ≥ 98%) in a mechanically stirred

[0027] Soluble in 1.0 m under action 3 Deionized water to get FeSO 4 Solution, adjust the pH of the solution to 4 with sulfuric acid, and add bright iron wire to prevent Fe 2+ Ion oxidation; with the Mn:Fe molar ratio of 7:3, weigh 118.3kg of industrial grade MnSO 4 ·H 2 O (product content ≥ 98%) was dissolved in the above solution, and the obtained above solution was vacuum filtered to remove impurities, weighed and quickly transferred to an ultrasonic reactor, stirred and mixed. Pass N 2 In the reactor, an inert environment is provided to prevent Fe 2+ ion oxidation.

[0028] (2) The total amount of metal ions was measured and calculated to be 996 mol, and 123.5 kg of ammonium oxalate (product content ≥ 99%) was weighed according to the molar rati...

Embodiment 2

[0033] A preparation method of high-purity ultrafine ferromanganese oxalate comprises the steps respectively:

[0034] (1) Weigh 111.2kg of industrial grade FeSO 4 ·7H 2 O (product content ≥ 98%) in mechanical stirring

[0035] Soluble in 1.0 m under the action of 3 Deionized water to get FeSO 4 Solution, adjust the pH of the solution to 4 with sulfuric acid, and add bright iron wire to prevent Fe 2+ Ion oxidation; with the Mn:Fe molar ratio of 6:4, weigh 101.4kg of industrial grade MnSO 4 ·H 2 O (product content ≥ 98%) was dissolved in the above solution, and the obtained above solution was vacuum filtered to remove impurities, weighed and quickly transferred to an ultrasonic reactor, stirred and mixed. Pass N 2 In the reactor, an inert environment is provided to prevent Fe 2+ ion oxidation.

[0036] (2) The total amount of metal ions was measured and calculated to be 996.5 mol, and 133.5 kg of sodium oxalate (product content ≥ 98.5%) was weighed according to the 1:1...

Embodiment 3

[0041] A preparation method of high-purity ultrafine ferromanganese oxalate comprises the steps respectively:

[0042] (2) Weigh 55.6 kg of industrial grade FeSO 4 ·7H 2 O (product content ≥ 98%) in mechanical stirring

[0043] Soluble in 1.0 m under the action of 3 Deionized water to get FeSO 4 Solution, adjust the pH of the solution to 4 with sulfuric acid, and add bright iron wire to prevent Fe 2+ Ion oxidation; with Mn:Fe molar ratio of 8:2, weigh 135.2kg of industrial grade MnSO 4 ·H 2 O (product content ≥ 98%) was dissolved in the above solution, and the obtained above solution was vacuum filtered to remove impurities, weighed and quickly transferred to an ultrasonic reactor, stirred and mixed. Pass N 2 In the reactor, an inert environment is provided to prevent Fe 2+ ion oxidation.

[0044] (2) The total amount of metal ions was measured and calculated to be 997.2 mol, and 183.7 kg of potassium oxalate (product content ≥ 99%) was weighed according to the molar ...

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Abstract

The invention discloses high-purity ultrafine oxalate ferromanganese of which the purity is greater than 99.6%, the median particle diameter is 0.5-4.0 microns and the metal proportion is adjustable, and a preparation method of the high-purity ultrafine oxalate ferromanganese, and belongs to the technical field of inorganic fine chemical engineering. According to the main points of the technical scheme, under inert gas protection, a ferrous salt and a manganous salt are dissolved into deionized water at a certain molar ratio; the mixed solution and a solid oxalic acid or oxalate are directly subjected to co-precipitation reaction under the common action of mechanical stirring and ultrasonic cavitation; and filtering, multiple ultrasonic laundering and drying are sequentially carried out on a generated oxalate ferromanganese suspension to obtain oxalate ferromanganese powder. The oxalate ferromanganese product obtained by the method has the advantages that the purity is high, metal ions are evenly distributed, the powder granularity is controllable, the distribution range is narrow, the technology is simple, the cost is relatively low and industrial mass production is easy to implement.

Description

technical field [0001] The invention belongs to the technical field of inorganic fine chemicals, and in particular relates to a preparation method of high-purity ultrafine ferromanganese oxalate. Background technique [0002] With the rapid development of the automobile industry, energy and environmental issues have become increasingly prominent. At present, motor vehicle pollution has become an important source of air pollution in my country, and is an important cause of smog, acid rain, and photochemical smog pollution. China released "Made in China 2025" in May 2015, which listed "energy saving and new energy vehicles" as one of the country's 10 key development areas, pointing out the direction for the development of my country's new energy vehicle industry. The power lithium battery is the core of electric vehicles, and the cathode material is the key to the power lithium battery. In 1997, Professor J. B. Goodenough discovered lithium iron phosphate for the first time a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M4/60H01M10/0525C07C51/41C07C55/07
CPCC07C51/412C07C55/07H01M4/60H01M10/0525Y02E60/10
Inventor 伊文涛闫春燕
Owner ZAOZHUANG UNIV
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