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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 consumption, complex process, poor operating environment, low heat source efficiency, unstable product quality, serious waste of raw materials, low production capacity of the production line, and strict requirements on the free water content of raw materials.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

specific Embodiment approach 2

[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, and the additives account for 0.1% of the gypsum mass;

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

[0042] c. After the step b is crystallized, the slurry is sent to the molding machine after being centrifuged with hot ...

specific Embodiment approach 3

[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, and the additives account for 0.05% of the gypsum mass;

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

[0049] c. The slurry after the crystallization in step b is sent to a molding machine after being sent to a centrifuge...

specific Embodiment approach 4

[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, and the additives account for 0.03% of the gypsum mass;

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

[0056] c. The slurry after step b is crystallized is sent to a molding machine after being sent to a 400°C hot air cen...

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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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