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Gypsum retarder and preparation method thereof

A technology of gypsum retarder and glutamic acid, which is applied to the preparation of the gypsum retarder and the field of gypsum retarder, which can solve the problems of unfavorable storage, environmental pollution, and increased processing difficulty, so as to save costs and reduce waste , good retarding effect

Inactive Publication Date: 2018-06-12
应城市嘉鸿技术服务科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Since the fermentation of glutamic acid is greatly affected by factors such as the market and seasons, the production fluctuation is difficult to predict, so it is easy to cause a large amount of corn soaking water to be unable to be processed in time, and because the corn soaking water is acidic, it increases the processing time. Difficulty, if simply discharged, it will easily cause environmental pollution
[0004] Treat corn soaking water with protease to release small molecular polypeptides and free amino acids, which is beneficial to the fermentation, but the excess corn soaking water is not conducive to storage because the pH is adjusted to neutral

Method used

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  • Gypsum retarder and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Samples were taken from the corn soaking water storage tank 1, and the total nitrogen content of the corn soaking water was measured by a high temperature burning method.

Embodiment 2

[0022] Add liquid ammonia to the corn soaking water storage tank 1, and simultaneously start the stirring device to adjust the pH to 7.0. Use a pH meter to measure the pH of the corn soaking water.

Embodiment 3

[0024] After the pH value tends to be stable, according to the total nitrogen content, add 500-1000ppm of protease, and continue to turn on and stir, so that the corn soaking water is in a suspended state, keep the temperature at 60-65°C, and the reaction time is 16-20h.

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Abstract

The invention provides a gypsum retarder and a preparation method thereof. Compared with a traditional process, the preparation method has the advantages that the method can be seamlessly connected with an existing gourmet powder production process, gypsum retarder production can be achieved under the premise that the normal production of gourmet powder is unaffected, cost is saved, and environment pollution is reduced.

Description

technical field [0001] The invention relates to the field of gypsum building materials, and discloses a gypsum retarder, which is made of the following components in mass percent: 20-30% of glutamic acid fermentation nitrogen source, 0.01-0.05% of phenylethyl acetate, diiso Propylethylamine 0.2-0.8%, water 30-45%. The invention also discloses a method for preparing the gypsum retarder. The invention is used to adjust the setting time of building gypsum, and has the characteristics of low cost, good retarding effect and small strength loss. Background technique [0002] Corn soaking water is a by-product of the starch sugar industry. It is concentrated by soaking corn with sulfurous acid or sodium sulfite. It is widely used in the production of glutamic acid fermentation and is the main source of organic nitrogen in glutamic acid fermentation. It is rich in soluble protein, organic acid and reducing sugar, and has strong buffering capacity. [0003] Since the fermentation o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/12C04B103/22
CPCC04B40/0046C04B2103/22C04B24/001C04B24/045C04B24/121
Inventor 袁明
Owner 应城市嘉鸿技术服务科技有限公司