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Preparation method of foam concrete foaming agent

A foamed concrete and foaming agent technology, applied in the field of concrete foaming agents, can solve the problems of low foaming agent yield, etc., and achieve the effects of increasing yield, increasing reaction phase, and shortening hydrolysis time

Inactive Publication Date: 2019-02-12
HENAN UNIV OF URBAN CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the generally high starch content in oilseed meal, during the hydrolysis process of protein in oilseed meal, starch is easy to form covering or wrapping protein molecules, making the yield of foaming agent prepared from oilseed meal as raw material is small

Method used

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  • Preparation method of foam concrete foaming agent
  • Preparation method of foam concrete foaming agent
  • Preparation method of foam concrete foaming agent

Examples

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preparation example Construction

[0018] The preparation method of the foam concrete foaming agent provided by the present invention comprises the following steps: mixing the oil-seed meal and / or oil-seed cake with water, adjusting the pH to 5.5-7, and then adding amylase and amylase activator for enzymolysis, solidifying Liquid separation, hydrolysis of the protein in the obtained solid, that is.

[0019] Preferably, the hydrolysis is carried out by adding an alkaline pH regulator to the solid obtained from solid-liquid separation to control the pH to 9-13.

[0020] Preferably, in the hydrolysis, water is added to the solid obtained by solid-liquid separation, and then an alkaline pH regulator is added to control the pH to 9-13 for alkaline hydrolysis. During the hydrolysis process, the mass of water used for every 1g of oilseed meal and / or oilseed cake is 1-3g.

[0021] Preferably, the amylase is α-amylase.

[0022] The amylase activator can keep the amylase in a certain spatial conformation, maintain the ...

Embodiment 1

[0030] The preparation method of the foamed concrete blowing agent of the present embodiment, flow chart sees figure 2 , including the following steps:

[0031] 1) Grind the peanut cake with stone, wash with water, and dry to obtain peanut cake powder; add peanut cake powder to 25°C water, then use hydrochloric acid to adjust the pH to 5.5, raise the temperature to 60°C, add α-amylase and Calcium chloride, keep warm for 40min (the iodine test has no blue color), filter to obtain the filter residue;

[0032]2) Add water to the resulting filter residue according to the mass ratio of peanut cake powder and water of 1:1, then add calcium hydroxide solution with a mass fraction of 2% to adjust the pH to 13, then raise the temperature of the system to 80°C for 4 hours, Obtain alkaline solution;

[0033] 3) Add hydrochloric acid to the obtained alkaline hydrolysis solution to adjust the pH to 6, then add activated carbon, heat it at 75°C for 30 minutes for decolorization and deodo...

Embodiment 2

[0035] The preparation method of the foamed concrete blowing agent of the present embodiment may further comprise the steps:

[0036] 1) Grind the peanut cake with stone, wash with water, and dry to obtain peanut cake powder; add peanut cake powder to 25°C water, then use hydrochloric acid to adjust the pH to 7, raise the temperature to 60°C, add α-amylase and Calcium chloride, keep warm for 40min (the iodine test has no blue color), filter to obtain the filter residue;

[0037] 2) Add water to the resulting filter residue according to the mass ratio of peanut cake powder and water of 1:2, then add calcium hydroxide solution with a mass fraction of 2% to adjust the pH to 9, then raise the temperature of the system to 90°C for 5 hours, Obtain alkaline solution;

[0038] 3) Add hydrochloric acid to the obtained alkali hydrolysis solution to adjust the pH to 7, then add activated carbon and keep it warm at 75°C for 30 minutes, and filter while it is hot to obtain the mother liqu...

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Abstract

The invention relates to a preparation method of a foam concrete foaming agent and belongs to the technical field of concrete foaming agents. The preparation method of the foam concrete foaming agent,provided by the invention, comprises the following steps: mixing oil residue meal and / or oil residue cakes with water; regulating the pH (Potential of Hydrogen) to be 5.5 to 7; then adding amylase and an amylase activating agent and carrying out enzymolysis; carrying out solid-liquid separation and carrying out hydrolysis on protein in the obtained solid to obtain the foam concrete foaming agent.According to the preparation method of the foam concrete foaming agent, starch in the oil residue meal or the oil residue cakes is subjected to enzymolysis through adopting the amylase and the starchis converted into polysaccharide to enter a liquid phase, so that the starch in the oil residue meal and the oil residue cakes is reduced, and insoluble protein in the raw materials including the oilresidue meal or the oil residue cakes is exposed into the liquid phase as much as possible; response phases of the insoluble protein in the oil residue meal or the oil residue cakes and alkali liquidin a hydrolysis process are increased, the hydrolysis rate is improved, the hydrolysis difficulty is reduced, the hydrolysis time is shortened and the yield of the foaming agent is increased.

Description

technical field [0001] The invention relates to a preparation method of a foam concrete foaming agent, belonging to the technical field of concrete foaming agents. Background technique [0002] Foamed concrete is a building material containing a large number of closed pores. With its light weight, heat preservation, heat insulation, fire resistance, and sound insulation, it has been rapidly developed and widely used in the construction field. In 2016, the national foam concrete achieved a growth rate of more than 20%, and the total output of foam concrete exceeded 35 million m 3 , ranking first in the world, with more than 1,000 enterprises. As the core factor of foam concrete, the foaming agent has a decisive influence on the fluidity of the freshly mixed slurry, the volume stability of the cast body, and the density and strength of the hardened body. Therefore, the development of a foaming agent with superior performance is the key to the development of foam concrete. On...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B24/14C04B103/42
CPCC04B24/14C04B2103/42
Inventor 李翔李子涵丁明洁李山鹰池吉安夏学莲苏箐刘向云徐辉郭静怡张艳花
Owner HENAN UNIV OF URBAN CONSTR