Process utilizing chemical gypsum to produce high strength alpha gypsum

A chemical gypsum and process technology, applied in the direction of manufacturing tools, ceramic molding machines, etc., can solve the problems of unstable product quality, low production line capacity, low heat source efficiency, etc., to improve resource utilization, high production efficiency, and resource utilization. high effect

Active Publication Date: 2012-08-01
泰安路发节能环保设备有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]The current domestic method is to use chemical gypsum to prepare dry base high-strength α gypsum, and then add other additives and add water to stir it into a slurry The production of gypsum building materials has disadvantages such as high energy co

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0039] Specific implementation manner two:

[0040] a. Fully mix chemical gypsum, water, and additives so that the solid content of the mixed product is 70% and the temperature is 90 degrees Celsius to form a stable slurry to be reacted. The additives account for 0.1% of the mass of gypsum;

[0041] b. Mix the slurry to be reacted in step a with additives, and perform crystal conversion after mixing. The crystal conversion conditions: pressure: 0.5Mpa, temperature 110 degrees Celsius, crystal conversion time 5 hours, the additive accounts for 0.01% of the mass of gypsum; The heating tube is wound on the outside of the crystal tank, and the bottom of the tank is equipped with a steam nozzle; the crystal conversion process is a metered continuous crystal conversion: the crystal conversion tank is continuously added with the slurry and additives to be reacted according to the ratio of the two

[0042] c. The slurry after crystal conversion in step b is sent to the molding machine af...

Example Embodiment

[0046] Specific implementation manner three:

[0047] a. Fully mix chemical gypsum, water, and additives so that the solid content of the mixed product is 50% and the temperature is 80 degrees Celsius to form a stable slurry to be reacted. The additives account for 0.05% of the mass of gypsum;

[0048] b. Mix the slurry to be reacted in step a with additives, and perform crystal conversion after mixing. The conditions of crystal conversion: pressure: 0.3Mpa, temperature 130 degrees Celsius, crystal conversion time 2 hours, the additive accounts for 0.06% of the mass of gypsum; The heating tube is wound on the outside of the crystal tank, and the bottom of the tank is equipped with a steam nozzle; the crystal conversion process is a metered continuous crystal conversion: the crystal conversion tank is continuously added with the slurry and additives to be reacted according to the ratio of the two

[0049] c. The slurry after crystal conversion in step b is sent to the forming mach...

Example Embodiment

[0053] Specific implementation manner four:

[0054] a. Fully mix chemical gypsum, water, and additives so that the solid content of the mixed product is 40% and the temperature is 85 degrees Celsius to form a stable slurry to be reacted. The additives account for 0.03% of the mass of gypsum;

[0055] b. Mix the slurry to be reacted in step a with additives, and perform crystal conversion after mixing. The crystal conversion conditions: pressure: 0.4Mpa, temperature 120 degrees Celsius, crystal conversion time 3 hours, the additive accounts for 0.08% of the mass of gypsum; The heating tube is wound on the outside of the crystal tank, and the bottom of the tank is equipped with a steam nozzle; the crystal conversion process is a metered continuous crystal conversion: the crystal conversion tank is continuously added with the slurry and additives to be reacted according to the ratio of the two

[0056] c. The slurry after crystal conversion in step b is sent to a molding machine af...

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Abstract

The invention discloses a process continuously utilizing chemical gypsum to produce high strength alpha gypsum, which is characterized by comprising the following steps of a, fully mixing the chemical gypsum and water to form stable slurry to be reacted; b, mixing the slurry to be reacted with addictive, and performing crystal transformation after mixing; c, sending the slurry after crystal transformation to a forming machine through centrifugation, and forming a gypsum product through solidification, cutting and drying; and adopting a steam heat source to serve as the required heat source. The process utilizing the chemical gypsum to produce the high strength alpha gypsum has the advantages of being high in resource utilization rate and low in energy consumption and cost. In addition, the high strength alpha gypsum can be continuously produced.

Description

technical field [0001] The invention relates to a process for producing high-strength alpha gypsum by using chemical gypsum. Background technique [0002] Chemical gypsum, also known as industrial by-product gypsum, is a by-product or waste residue of chemical reactions in industrial production with calcium sulfate as the main component. Chemical gypsum is a renewable resource with great reuse value. [0003] At present, the common method in China is to use chemical gypsum to prepare dry-based high-strength α-gypsum, and then add other additives and add water to stir it into a slurry to make gypsum building materials. This process has high energy consumption, complicated process, and Poor operating environment, low heat source efficiency, unstable product quality, serious waste of raw materials, low production capacity of the production line, strict requirements on free water content of raw materials, etc. Contents of the invention [0004] Aiming at the above disadvanta...

Claims

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Application Information

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IPC IPC(8): B28B1/00C04B28/14
Inventor 赵兴银
Owner 泰安路发节能环保设备有限公司
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