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Equipment and method for producing high-purity sodium sulfate from mirabilite ore

A kind of mirabilite ore, high-purity technology, applied in the direction of alkali metal sulfite/sulfate purification, etc., can solve the problems of low efficiency and purity, high cost, etc.

Inactive Publication Date: 2017-05-31
HUNAN HENGYANG XINLI CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Most of the existing sodium sulfate production is through the purification of thenardite ore, but the existing methods are either not very efficient and pure, or the cost is too high

Method used

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  • Equipment and method for producing high-purity sodium sulfate from mirabilite ore

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specific Embodiment

[0023] combine figure 1 A kind of equipment for producing high-purity sodium sulfate from mirabilite ore shown, comprises grinding device 11, impurity removing device 3 and drying device 4, and grinding device 11 top is provided with feeding port 1, and bottom is provided with discharging port 2, and discharging Port 2 is connected to the impurity removal device, the impurity removal device includes a dissolution tank 3, a heater 5 is arranged at the bottom of the dissolution tank 3, an agitator is arranged in the dissolution tank 3, a drain pipe 6 is also arranged on the dissolution tank 3, and a drain pipe 6 It communicates with the drying device 4 , and a filter device 7 is also arranged between the drain pipe 6 and the drying device 4 .

[0024] In this embodiment, the grinding device 11 is a ball mill.

[0025] In this embodiment, the stirrer includes a stirring shaft 8 and stirring blades 9 arranged on the stirring shaft 8 .

[0026] In this embodiment, a valve 10 is p...

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Abstract

The invention discloses equipment for producing high-purity sodium sulfate from mirabilite ore. The equipment comprises a grinding device, an impurity removing device and an air drying device, wherein the top portion of the grinding device is provided with a material feeding port and the bottom portion is provided with a material outlet, the material outlet is connected to the impurity removing device, the impurity removing device comprises a dissolving box, the bottom portion of the dissolving box is provided with a heater, a stirrer is arranged inside the dissolving box, the dissolving box is further provided with a liquid discharging pipe, the liquid discharging pipe is communicated to the air drying device, and a filtration device is arranged between the liquid discharging pipe and the air drying device. The invention further provides a method for producing high-purity sodium sulfate from mirabilite ore, wherein the method comprises grinding, dissolving, precipitation filtration, air drying, and other steps. According to the present invention, the structure and the method are simple, and the produced sodium sulfate has the high purity.

Description

technical field [0001] The invention relates to the field of sodium sulfate production, in particular to equipment and a method for producing high-purity sodium sulfate from mirabilite ore. Background technique [0002] Sodium sulfate is a monoclinic crystal system with short columnar crystals. The aggregates are dense blocks or shells, etc. It is colorless and transparent, sometimes with light yellow or green, and is easily soluble in water. White, odorless, bitter crystal or powder, hygroscopic. Appearance is colorless, transparent, large crystals or granular small crystals. Exposure to air is easy to absorb moisture and become aqueous sodium sulfate. It transforms into hexagonal crystal at 241°C. The high-purity, fine-grained anhydrous substance is called Yuanmingfen. Very soluble in water. There is a cool feeling. The taste is cool and salty. It is easy to hydrate in humid air and transforms into powdery aqueous sodium sulfate covering the surface. Anhydrous Glau...

Claims

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Application Information

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IPC IPC(8): C01D5/16
CPCC01D5/16C01P2006/80
Inventor 刘建
Owner HUNAN HENGYANG XINLI CHEM
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