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Process for preparing manganese sulfate by high-temperature crystallization method and automatic continuous production device

A technology of high-temperature crystallization and production equipment, applied in the direction of manganese sulfate, etc., can solve the problems of high energy consumption, high labor intensity, and low degree of automation of manganese sulfate, and achieve the effects of reducing energy consumption, reducing labor intensity, and advanced production technology

Active Publication Date: 2017-08-18
广州市三珍商贸有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problems of high energy consumption, high labor intensity, and low degree of automation in the production of manganese sulfate in the prior art, the application provides a process for preparing manganese sulfate by high-temperature crystallization and an automatic continuous production device

Method used

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  • Process for preparing manganese sulfate by high-temperature crystallization method and automatic continuous production device
  • Process for preparing manganese sulfate by high-temperature crystallization method and automatic continuous production device

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Effect test

Embodiment 1

[0022] The technology for preparing manganese sulfate by high-temperature crystallization method may further comprise the steps:

[0023] The first step, the manganese sulfate solution (wherein the concentration is 350 grams per liter) after the impurity removal and purification in the liquid storage tank, each adds 2000 liters of manganese sulfate to the preheating kettle of 3000 liters and the high-temperature crystallization kettle of 3000 liters by metering pump solution, open the agitator of the preheating kettle and the high-temperature crystallization kettle, and feed compressed air into the high-temperature crystallization kettle, so that the internal pressure of the high-temperature crystallization kettle, the automatic discharge centrifuge, the mother liquor heat exchanger, and the silo are all maintained at 0.8 MPa, and then turn on the circulation pump of the heat transfer oil, and the temperature of the heat transfer oil is controlled at about 250°C.

[0024] In t...

Embodiment 2

[0028] The technology for preparing manganese sulfate by high-temperature crystallization method may further comprise the steps:

[0029] The first step, the manganese sulfate solution (wherein the concentration is 360 grams per liter) after the impurity removal and purification in the liquid storage tank, each adds 3000 liters of manganese sulfate to the preheating kettle of 4000 liters and the high temperature crystallization kettle of 4000 liters by metering pump solution, open the agitator of the preheating kettle and the high-temperature crystallization kettle, and feed compressed air into the high-temperature crystallization kettle, so that the internal pressure of the high-temperature crystallization kettle, the automatic discharge centrifuge, the mother liquor heat exchanger, and the silo are all maintained at 0.8 MPa, and then turn on the circulation pump of the heat transfer oil, and the temperature of the heat transfer oil is controlled at about 250°C.

[0030] In t...

Embodiment 3

[0034] The technology for preparing manganese sulfate by high-temperature crystallization method may further comprise the steps:

[0035] The first step, the manganese sulfate solution (wherein the concentration is 340 grams per liter) after the impurity removal and purification in the liquid storage tank, respectively add 3800 liters of manganese sulfate to the preheating kettle of 5000 liters and the high temperature crystallization kettle of 5000 liters by metering pump solution, open the agitator of the preheating kettle and the high-temperature crystallization kettle, and feed compressed air into the high-temperature crystallization kettle, so that the internal pressure of the high-temperature crystallization kettle, the automatic discharge centrifuge, the mother liquor heat exchanger, and the silo are all maintained at 0.8 MPa, and then turn on the circulation pump of the heat transfer oil, and the temperature of the heat transfer oil is controlled at about 250°C.

[003...

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Abstract

The invention discloses a process for preparing manganese sulfate by a high-temperature crystallization method and an automatic continuous production device. The process comprises the following steps: adding manganese sulfate solution which is impurity-removed and purified to a preheating kettle, and heating the added manganese sulfate solution to 90-100 DEG C by the preheating kettle; adding the heated manganese sulfate solution into a high-temperature crystallization kettle, and heating the added manganese sulfate solution to 160-180 DEG C in the high-temperature crystallization kettle for high-temperature crystallization; then adding the manganese sulfate solution of high-temperature crystallization into an automatic discharge centrifuge, putting a centrifuged water manganese sulfate crystal into a silo, and then obtaining a water manganese sulfate crystal through the drying of an air flow dryer unit. The process for preparing the manganese sulfate by the high-temperature crystallization method and the automatic continuous production device have the advantages that the production process is advanced; the design is scientific and reasonable; the safe, automatic and continuous production can be realized; the fixed investment is less; the labor intensity is reduced; the energy consumption is greatly reduced; the water consumption and production cost are saved, especially the water consumption and production cost of high-purity manganese sulfate production are saved; because soluble impurities are dissolved and saved in the mother liquor, several-time recrystallization is not required.

Description

technical field [0001] The invention relates to the technical fields of hydrometallurgy and inorganic chemical industry, in particular to a process for preparing manganese sulfate by a high-temperature crystallization method and an automatic continuous production device. Background technique [0002] Manganese sulfate is a traditional manganese salt product widely used in fields such as fertilizer, feed, paint and pesticide. At present, the domestic manganese sulfate production process mainly uses pyrolusite as raw material, which is divided into two reduction leaching technologies: carbon fire reduction and wet reduction (pyrite, ferrous sulfate and other reducing agents) and acid leaching. Potassium and sodium are removed by the alum method, iron is removed by oxidation and hydrolysis, heavy metals are removed by sulfide, calcium and magnesium are removed by fluoride, the manganese sulfate solution after impurity removal and purification is obtained by standing precipitati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G45/10
CPCC01G45/10
Inventor 刘中华
Owner 广州市三珍商贸有限公司
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