Continuous production method and apparatus for alpha semi-water gypsum

A hemihydrate gypsum and production method technology, applied in the field of gypsum processing, can solve the problems of high labor intensity, large equipment investment, complicated operation, etc., and achieve the effects of saving energy consumption, reducing investment, and simplifying the process

Inactive Publication Date: 2008-10-15
SHANXI BEIFANG GYPSUM IND
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Problems solved by technology

Large equipment investment, large area, complex operation, high labor intensity
If a large-scale reactor is used, when the α-type hemihydrate gypsum slurry is produced, the reactor cannot be used for the next production immediately, but as a storage tank, which is not only inefficient, but also consumes a lot of energy to maintain the reactor. Slurry will not revert to solidification

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  • Continuous production method and apparatus for alpha semi-water gypsum

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Embodiment Construction

[0018] A continuous production method of α-type hemihydrate gypsum, using dihydrate gypsum slurry as raw material, continuously pumping the dihydrate gypsum slurry into the reaction tube installed in the heating box with a high-pressure pump, and the raw material slurry flows in the tube. In the process, when the temperature and pressure reach a certain value and keep for a certain period of time, the dihydrate gypsum will remove a semi-crystallization water to generate α-type hemihydrate gypsum, and the slurry containing α-type hemihydrate gypsum is sprayed into the drying separation tower through the nozzle to obtain dryness. α-type hemihydrate gypsum powder; or spray into the gypsum mixing and molding device to make gypsum products.

[0019] When the slurry containing dihydrate gypsum is pumped in continuously from one end of the high-pressure pump, the other end discharges the dehydrated slurry containing α-type hemihydrate gypsum; The flow rate of the raw material slurry ...

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Abstract

The invention discloses an alpha-semi-hydrated gypsum continuous producing method and device. And the traditional 'liquid phase process' has disadvantages of high equipment investment, wide occupied land, complex to operate and high labor strenghth. But the invention changes the traditional reaction kettle into a reaction pipe with a certain length, which is coilded in a heating box, one end of the reaction pipe connected with raw material pulp high pressure pump and the other end connected with a drying separation tower or gypsum blend-mouding device, thus implemnting continuous production of alpha-semi-hydrated gypsum. Therefore, the invention has advantages of saving reaction equipment investment and reducing production energy consumption.

Description

technical field [0001] The invention relates to the processing technology of gypsum, in particular to an α-type hemihydrate gypsum production methods and devices. Background technique [0002] At present, the mature process of producing α-type hemihydrate gypsum with powdery dihydrate gypsum as raw material is only the "liquid phase method". After secondary grinding, α-type hemihydrate gypsum powder can be obtained. This traditional "liquid phase method" produces α-type hemihydrate gypsum powder, the drying system equipment is expensive, the energy consumption is high, and the operation is very complicated. If the reacted α-type hemihydrate gypsum slurry is no longer dried and directly cast into gypsum products, not only the investment in drying equipment can be saved, but also energy can be saved. But, because " liquid-phase method " production needs a high-pressure condition, therefore, prior art all is to adopt a kind of airtight, can bear certain pressure and can con...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B11/02
Inventor 王永昌张继忠柏飞
Owner SHANXI BEIFANG GYPSUM IND
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