Method for preparing ammonium manganese phosphate crystal

A technology for ammonium manganese phosphate and crystals, which is applied in the field of bionic method for preparing ammonium manganese phosphate crystals, can solve the problems of high energy consumption, complicated process and high cost of ammonium manganese phosphate, and achieves the advantages of simple operation, low preparation cost, mild and safe reaction conditions. Effect

Inactive Publication Date: 2021-07-20
NANCHANG HANGKONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the disadvantages of high energy consumption, low purity, complicated process and high cost in the existing preparation method of ammonium manganese phosphate, the present invention proposes a method with mild reaction conditions, low energy consumption, high purity, simple process and low cost Preparation method of ammonium manganese phosphate crystal

Method used

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  • Method for preparing ammonium manganese phosphate crystal
  • Method for preparing ammonium manganese phosphate crystal

Examples

Experimental program
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Effect test

Embodiment 1

[0013] In a connected reactor with 2 left and right ear grooves and 3 left, middle and right barrier plates, according to the molar ratio, manganese: phosphorus = 1: 1.50, manganese chloride is added to the left ear groove, and ammonium phosphate is added to the right ear in the slot. Then, a mixture solution containing 0.04% starch and 2.0% ammonium chloride by mass ratio is added to the connected reactor, so that the liquid level of the mixture solution of starch and ammonium chloride is higher than the left ear groove and the right ear groove The upper edge is 1 cm to ensure that the reactants in the left ear groove and the right ear groove are connected through the mixture solution. Finally, the lid was put on the connected reactor, and after 7 days of static reaction, the product was filtered, washed, and dried at 105° C. for 1 hour to obtain ammonium manganese phosphate crystals. The yield of ammonium manganese phosphate crystals was 98%, and the purity was 99.5%.

Embodiment 2

[0015] In a connected reactor with 2 left and right ear grooves and 3 left, middle and right barrier plates, according to the molar ratio, manganese: phosphorus = 1: 1.40, manganese chloride is added to the left ear groove, and ammonium phosphate is added to the right ear in the slot. Then, a mixture solution containing 0.03% starch and 2.5% ammonium chloride by mass ratio is added to the connected reactor, so that the liquid level of the mixture solution of starch and ammonium chloride is higher than the left ear groove and the right ear groove The upper edge is 1 cm to ensure that the reactants in the left ear groove and the right ear groove are connected through the mixture solution. Finally, the lid was put on the connected reactor, and after 7 days of static reaction, the product was filtered, washed, and dried at 105° C. for 1 hour to obtain ammonium manganese phosphate crystals. The yield of ammonium manganese phosphate crystals was 97%, and the purity was 99.9%.

Embodiment 3

[0017] In a connected reactor with 2 left and right ear grooves and 3 left, middle and right barrier plates, according to the molar ratio, manganese: phosphorus = 1: 1.60, manganese chloride is added to the left ear groove, and ammonium phosphate is added to the right ear in the slot. Then, a mixture solution containing 0.05% starch and 1.5% ammonium chloride by mass ratio is added to the connected reactor, so that the liquid level of the mixture solution of starch and ammonium chloride is higher than the left ear groove and the right ear groove The upper edge is 1 cm to ensure that the reactants in the left ear groove and the right ear groove are connected through the mixture solution. Finally, the lid was put on the connected reactor, and after 7 days of static reaction, the product was filtered, washed, and dried at 105° C. for 1 hour to obtain ammonium manganese phosphate crystals. The yield of ammonium manganese phosphate crystals was 99%, and the purity was 99.0%.

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Abstract

The invention discloses a method for preparing ammonium manganese phosphate crystal. Manganese chloride or manganese sulfate is used as a manganese source reactant, ammonium phosphate is used as a phosphorus source reactant, and starch is used as a biological regulating agent to prepare the ammonium manganese phosphate crystal. The method comprises the following steps: sequentially adding manganese chloride or manganese sulfate, ammonium phosphate, and a mixture solution of starch and ammonium chloride or ammonium sulfate into a communicating reactor provided with left and right ear grooves and left, middle and right baffles, and filtering, washing and drying a product after the reaction is finished to obtain the ammonium manganese phosphate crystal. The purity of the prepared ammonium manganese phosphate crystal reaches 99.0%-99.9%, the yield reaches 95%-97%, the purity and crystallinity are high, and the method has the advantages of being simple in process, mild in reaction condition, low in energy consumption and cost and the like.

Description

technical field [0001] The invention relates to a method for preparing ammonium manganese phosphate crystals, in particular to a method for preparing manganese phosphate by using manganese chloride or manganese sulfate as a manganese source reactant, ammonium phosphate as a phosphorus source reactant, and starch as a biological regulator. Ammonium crystal method. The specific technical field of the present invention is the preparation of ammonium manganese phosphate crystals. Background technique [0002] Ammonium manganese phosphate can be used as catalyst, flame retardant, water softener, starter, slow-release phosphorus manganese nitrogen compound fertilizer, lithium ion battery precursor and chemical reagent. The existing preparation method of ammonium manganese phosphate has the disadvantages of high energy consumption, low purity, complicated process and high cost. [0003] In order to overcome the disadvantages of higher energy consumption, lower purity, more compli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B25/45
CPCC01B25/451C01P2006/80C01P2002/72
Inventor 张芬钟学明孙贤陈丹婷
Owner NANCHANG HANGKONG UNIVERSITY
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