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The concentrated crystallization method of manganese sulfate monohydrate

A technology for concentrating crystallization and manganese sulfate, applied in manganese sulfate, crystallization separation, separation methods, etc., can solve the problems of wide product particle size distribution, harsh production environment, high cost, and achieve average product particle size, high product quality, and production cost. low effect

Active Publication Date: 2015-09-02
四川中创启源新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] This method has defects such as high energy consumption, high cost, harsh production environment, and wide range of product particle size distribution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Embodiment 1 adopts the method of the present invention to concentrate and crystallize to produce manganese sulfate monohydrate

[0035] a. Adding concentration to be concentrated in evaporator 1 and evaporator 2 respectively is a 30wt% manganese sulfate solution, and evaporator 1 is heated by steam at a temperature of 130° C. to crystallize the manganese sulfate solution;

[0036] b. Collect the steam escaping from evaporator 1 when heating evaporator 1, and use it to heat evaporator 2; wherein, the pressure maintained in evaporator 2 is -0.04~0.02MPa, and the manganese sulfate solution in evaporator 2 is Keep stirring at a speed of 25 rpm during heating; stop steam heating when the concentration of the manganese sulfate solution in evaporator 1 reaches 50%.

[0037] c. When the concentration of the manganese sulfate solution in the evaporator 2 reaches 50wt% synchronously in the evaporator 1 through the adjustment of the liquid replenishment amount, the temperature is...

Embodiment 2

[0038] Embodiment 2 Adopt the method of the present invention to concentrate and crystallize to produce manganese sulfate monohydrate

[0039] a. Add manganese sulfate solution with a concentration of 26wt% to evaporator 1 and evaporator 2 respectively. Evaporator 1 is heated with steam at a temperature of 120°C and stirred at a speed of 25 rpm to make the manganese sulfate solution Crystallization; the evaporator 1 and the evaporator 2 are a sealable evaporation crystallization tank with a stirrer inside;

[0040] b. Collect the steam that escapes from evaporator 1 when heating evaporator 1, and use it to heat evaporator 2; wherein, the pressure maintained in evaporator 2 is -0.04~0.02MPa, and the manganese sulfate solution in evaporator 2 is in Also stir at a speed of 27 rev / min during heating;

[0041] c. When the concentration of the manganese sulfate solution in the evaporator 2 reaches 45wt%, the temperature is raised to 100°C to crystallize the manganese sulfate soluti...

Embodiment 3

[0043] Embodiment 3 Adopt the method of the present invention to concentrate and crystallize to produce manganese sulfate monohydrate

[0044] a. Add manganese sulfate solution with a concentration of 25wt% to be concentrated in evaporator 1 and evaporator 2 respectively. Evaporator 1 is heated with steam at a temperature of 140°C and stirred at a speed of 35 rpm to make the manganese sulfate solution Crystallization; the evaporator 1 and the evaporator 2 are a sealable evaporation crystallization tank with a stirrer inside;

[0045] b. Collect the steam that escapes from evaporator 1 when heating evaporator 1, and use it to heat evaporator 2; wherein, the pressure maintained in evaporator 2 is -0.04~0.02MPa, and the manganese sulfate solution in evaporator 2 is in Stir at a speed of 35 rpm during heating; stop steam heating when the concentration of the manganese sulfate solution in the evaporator 1 reaches 50%.

[0046] c. When the concentration of the manganese sulfate sol...

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Abstract

The invention relates to a concentration and crystallization method of manganese sulfate monohydrate, belonging to the technical field of feed production. The concentration and crystallization method of the manganese sulfate monohydrate needs lower production cost. The concentration and crystallization method of the manganese sulfate monohydrate comprises the following steps of: a. respectively adding a manganese sulfate solution to be concentrated into an evaporator 1 and an evaporator 2, heating the evaporator 1 by using 120-140 DEG C steam to crystallize the manganese sulfate solution; b. collecting the steam escaping from the evaporator 1 when the evaporator 1 is heated and heating the evaporator 2 by using the collected steam, wherein the pressure in the evaporator 2 is -0.04-0.02MPa, and the manganese sulfate solution in the evaporator 2 is stirred at a speed of 25-35 rpm during heating; and c. heating to crystallize the manganese sulfate solution when the concentration of the manganese sulfate solution in the evaporator 2 reaches 45-50wt%.

Description

technical field [0001] The invention relates to a method for concentrating and crystallizing manganese sulfate monohydrate, which belongs to the technical field of feed production. Background technique [0002] Manganese sulfate monohydrate is one of the important trace element fertilizers, used as base fertilizer, seed soaking, seed dressing, topdressing and foliar spraying. It is used as a feed additive in animal husbandry and feed industry, and also as a raw material for preparing drier in the paint industry. It is used as a catalyst in the synthesis of fatty acids, and can also be used in papermaking, ceramics, printing and dyeing, ore flotation, electrolytic manganese and other manganese salts. raw material. [0003] There are many industrial production methods of manganese sulfate monohydrate. The main process steps include acid leaching of manganese ore or acid leaching after manganese ore roasting, evaporation and crystallization of manganese sulfate solution to obt...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D9/00C01G45/10
CPCY02P20/10
Inventor 王毅姜二林
Owner 四川中创启源新材料科技有限公司
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