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Industrial by-product gypsum reduction equipment

An industrial by-product gypsum and equipment technology, applied in the field of gypsum production equipment, can solve the problems of difficult temperature control, affecting the production efficiency and output of hemihydrate gypsum, and the temperature at the end far away from the flame-breathing furnace is low, so as to improve production efficiency, Improve air tightness and improve conversion rate

Active Publication Date: 2017-07-14
ZHENGZHOU SUNDY BUILDING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, when using dihydrate gypsum to dry and produce hemihydrate gypsum, a gypsum dryer is usually used to dry the dihydrate gypsum. The furnace uses the flame ejected from the flame-breathing furnace to generate high-temperature airflow to heat and dry the phosphogypsum, so as to achieve the purpose of gypsum structure conversion. However, due to the long length of the dryer and the flame-breathing furnace is located at one end of the dryer, this As a result, the temperature in different areas of the dryer is different. The temperature at the end close to the flame-breathing furnace is higher, and the temperature at the end far away from the flame-breathing furnace is lower. For transportation between cylinders, the side of the dryer near the furnace is higher than 230 0 Set the anhydrous gypsum outlet at the position of C, and the temperature range is 130°C 0 C-230 0 The position of C is to set the export of hemihydrate gypsum. At present, the produced hemihydrate gypsum can be used as building materials, but the produced anhydrous gypsum can usually only be stored for other use
In actual production, due to the difficulty of temperature control, a large amount of anhydrous gypsum will be produced, which will seriously affect the production efficiency and output of hemihydrate gypsum

Method used

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  • Industrial by-product gypsum reduction equipment
  • Industrial by-product gypsum reduction equipment
  • Industrial by-product gypsum reduction equipment

Examples

Experimental program
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Effect test

Embodiment 1

[0024] Such as figure 1As shown, a kind of industrial by-product gypsum reduction equipment, the reduction equipment is applied to the industrial by-product gypsum reduction method, the industrial by-product gypsum reduction method is as follows: anhydrous gypsum and hemihydrate gypsum are transported into the closed drum of the reduction equipment 3, at the same time transport water vapor into the airtight drum 3, under the pressure of 20~50kPa, mix anhydrite, hemihydrate gypsum and water vapor in the airtight drum 3 evenly, use the moisture and water of the hemihydrate gypsum Steam reduces anhydrite to hemihydrate gypsum. The reduction equipment includes a kiln head 1, a kiln tail 2, a drum 3, a feeding device, a discharge port 4, a rear air intake pipe 5, a power transmission device 25 and a supporting device 6. The supporting device 6 mentioned above supports the kiln head 1 and the kiln tail 2, the power transmission device 25 drives the drum 3 to rotate relative to the k...

Embodiment 2

[0031] Such as figure 2 , image 3 As shown, the first embodiment is repeated, with the following differences: the kiln head 1 is provided with a head inlet pipe 17, and the head inlet pipe 17 is connected to the steam delivery pump 9 through a pipeline. The feeding device includes an upper hopper 18, an upper pressure door 19, a lower hopper 20, a lower pressure door 21 and a feeding pipe 13. The upper end of the upper hopper 18 is opened to connect the hemihydrate gypsum outlet and the anhydrous gypsum outlet of the gypsum dryer. , the lower part of the upper hopper 18 is fixedly connected to the upper part of the lower hopper 20, the lower opening of the upper hopper 18 is located in the lower hopper 20, and an upper pressure door 19 is arranged on the lower opening of the upper hopper 18, and one end of the upper pressure door 19 is hinged with the upper hopper 18, and the upper pressure door 19 is hinged to the upper hopper 18. The other end of the pressure door 19 is c...

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Abstract

The invention relates to industrial by-product gypsum reduction equipment. The industrial by-product gypsum reduction equipment comprises a kiln head, a kiln tail, a roller, a feeding device, a discharging opening, a tail air-intake pipe, a power transmission device and a supporting device. Anhydrite gypsum and hemi-hydrate gypsum are conveyed into the sealed roller, meanwhile vapor is conveyed into the sealed roller, under certain pressure condition, the anhydrite gypsum, the hemi-hydrate gypsum and the vapor are mixed and uniformly stirred in the sealed roller, and the anhydrite gypsum is reduced into hemi-hydrate gypsum by using water of the hemi-hydrate gypsum and the vapor. Therefore, the problem of a plurality of anhydrite gypsum products of the current gypsum drying machine is effectively solved, the rate of transferring industrial by-product gypsum into hemi-hydrate gypsum is effectively improved, and the production efficiency of hemi-hydrate gypsum by the gypsum drying machine is improved.

Description

technical field [0001] The invention relates to the technical field of gypsum production equipment, in particular to a reduction equipment for industrial by-product gypsum, especially phosphogypsum. Background technique [0002] Gypsum is a chemical composition of calcium sulfate containing crystal water. In daily life, gypsum is divided into natural gypsum and chemical gypsum. Natural gypsum is a mineral containing two crystal water. Chemical gypsum is used when producing fertilizers and other chemical raw materials. The waste produced, with the improvement of the emission requirements of coal-fired boilers, the by-product of the desulfurization process is called desulfurization gypsum; the waste gypsum produced by the production of fertilizers and other phosphides is called phosphogypsum because it contains phosphorus oxide. The application of building materials is mostly to calcinate raw gypsum containing two crystal waters into gypsum containing half crystal water, commo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B11/06
CPCC04B11/06
Inventor 赵嘉珩赵建纲
Owner ZHENGZHOU SUNDY BUILDING TECH
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