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Potassium manganate separation technology and device

A potassium manganate and process technology, applied in the production field of inorganic compounds, can solve problems such as incomplete separation of impurities, high labor intensity of workers, damage to filter press materials, etc., to reduce labor intensity of workers, improve labor productivity and production safety Sexual, easy-to-operate effect

Active Publication Date: 2012-08-29
重庆昌元化工集团有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of filter press separation process, there are disadvantages such as complicated process, incomplete separation of impurities, slow speed, high labor intensity of workers, and damage to filter press materials.

Method used

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  • Potassium manganate separation technology and device
  • Potassium manganate separation technology and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] First drop into 13.6 tons of the concentrated potassium hydroxide that is preheated to 225 ℃ from the tower top feed port (5) of main reaction tower (23), drop into the mixed batch 3.8 that is preheated to room temperature~80 ℃ from feed port (6) tons (containing 1.6 tons of ordinary manganese ore powder and adding 3% Mn6+ oxidation initiator), introduce compressed clean air preheated to 220 °C from the feed port (1) at the bottom of the main reaction tower, so that the internal pressure of the tower reaches 0.1 to 0.7 Mpa; pass the dust-removed flue gas into the heating jacket (8) of the pneumatic vulcanization reaction tower to keep the reaction section at a temperature of 220-300°C. After 2 hours of reaction, start to discharge from the bottom of the main pneumatic flow reaction tower (7 ) The potassium manganate content that goes out continuously is the mixture of 35%, gets this 1000 kilograms, and the mixture flows into the low-level reaction kettle (25) through pip...

Embodiment 2

[0019] Get 1000 kilograms of mixtures of 30% potassium manganate content continuously from the discharge port (7) at the bottom of the main pneumatic fluidized reaction tower, flow into the low-level reactor (25) through the pipeline, Add 800 kilograms of weight concentration and be 15% potassium hydroxide solution, after stirring, be pumped into in the solid-liquid separation reactor (26) and separate with pump, the lye after the separation and potassium manganate are respectively from discharge port ( 21) and (22) discharge, can obtain 260 kilograms of potassium manganate like this.

Embodiment 3

[0021] Get 1000 kilograms of mixtures of 30% potassium manganate content continuously from the discharge port (7) at the bottom of the main pneumatic fluidized reaction tower, flow into the low-level reactor (25) through the pipeline, Add 500 kilograms of weight concentration and be the potassium hydroxide solution of 0.5%, after stirring, be pumped into in the solid-liquid separation reactor (26) and separate with pump, the lye after the separation and potassium manganate are respectively from discharge opening ( 21) and (22) discharge, can obtain 270 kilograms of potassium manganate like this.

[0022] Effect of the present invention is shown in Table 1

[0023] Table 1 Effect of the present invention

[0024] Labor intensity Impurities Energy Consumption standard coal / ton product cost pollute Open hearth method The labor intensity is extremely high, and the labor productivity is 1 ton / person·month Residue of manganese in manganese ore > 15% ...

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Abstract

The invention provides a potassium manganate separation technology and a device. Potassium manganate mixture prepared by reaction in a main reaction tower (23) flows into a low-order agitated reactor (25) filled with potassium hydroxide solution; after evenly stirred, the mixture is pumped into a solid-liquid separation agitated reactor (26) to carry out solid-liquid separation so as to separate potassium hydroxide from potassium manganate. The device has favourable separation effect, simple and continuous separation technology, lowers work labor intensity, production cost and the like and can be widely applied to the potassium manganate separation technology.

Description

technical field [0001] The present invention belongs to the production of inorganic compounds of manganese, more specifically about the separation process and device of potassium manganate. Background technique [0002] At present, the technology of producing potassium manganate at home and abroad generally adopts open hearth roasting method and pneumatic fluidized reaction tower method to produce potassium manganate, such as Chinese Patent No. 92108224. "; Publication No. CN1316384A, the title of invention is described in detail in " new process for producing potassium permanganate by pneumatic fluidized tower ". In the production process of potassium manganate, due to the influence of impurities in the manganese ore powder, in the separation process of potassium manganate, the separation of potassium manganate is generally carried out by pressure filtration. In the process of filter press separation process, there are disadvantages such as complicated process, incomplete ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01G45/12
Inventor 李守昌李正国
Owner 重庆昌元化工集团有限公司