Sintering-free porous ceramsite and preparation process thereof

A preparation process and a technology for porous ceramics, which are applied in the field of sintering-free porous ceramics and their preparation, can solve the problems of low density, high porosity, and difficulty in utilizing industrial waste, and achieve excellent performance, improved porosity, and improved closure. The effect of porosity and low price

Active Publication Date: 2022-03-29
北京仁创砂业铸造材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] Based on this, it is necessary to provide a non-sintering-free porous ceramsite and its preparation process, which uses casting waste ash as the main raw material, which not only solves the problem of processing and utilization of casting waste ash, but also has a simple preparation process, and the prepared non-sintering porous ceramics Large specific surface area, high strength, low density, high porosity, wide range of applications
At present, there is a lack of effective treatment methods for foundry waste ash in China, and it is difficult to completely solve the problem of industrial waste utilization.

Method used

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  • Sintering-free porous ceramsite and preparation process thereof
  • Sintering-free porous ceramsite and preparation process thereof
  • Sintering-free porous ceramsite and preparation process thereof

Examples

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Embodiment 1

[0038] The embodiment of the present invention provides a preparation process of non-sintering porous ceramsite, comprising the following steps:

[0039] S11: Preparation of ceramsite pore-forming matrix

[0040] S111, preparation of raw materials, α-starch 130kg, granule enzyme preparation 12kg (wherein, α-amylase preparation and 4-α-D-glucan glucan hydrolase are half and half, respectively 6kg, and the particle diameter of granule enzyme preparation is 500 mesh-1000 mesh), clean water 25kg.

[0041] S112, mix starch and granular enzyme preparations and add them to the granulator for granulation. The inclination angle of the granulation pan is 25°, and the rotation frequency is 40Hz. During the granulation process, add clear water to the materials in the granulation pan in the form of atomization , the particle size of the granulation is 3-8mm, the control range of the water content is 15%-20%, and the ceramsite pore-forming matrix is ​​prepared.

[0042] S12: Preparation o...

Embodiment 2

[0052] The difference from Example 1 is that in the preparation of the ceramsite pore-forming matrix in step S11, the following raw materials are used:

[0053] α-starch 100kg, granule enzyme preparation 10kg (wherein, α-amylase preparation and 4-α-D-glucan glucan hydrolase are half and half, respectively 5kg, and the particle diameter of granule enzyme preparation is (500 mesh-1000 mesh ), clean water 20kg.

Embodiment 3

[0055] The difference from Example 1 is that in the preparation of step S11 ceramsite pore-forming matrix, the following raw materials are used: 150 kg of α-starch, 10 kg of granular enzyme preparation (wherein, α-amylase preparation and 4-α-D-glucan The glucan hydrolase is half and half, respectively 5kg, the particle size of the granzyme preparation is (500 mesh-1000 mesh), and clear water 30kg.

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Abstract

The invention provides sintering-free porous ceramsite and a preparation process thereof.The preparation process comprises the steps that starch and a granular enzyme preparation are mixed and then added into a granulator to be granulated, clear water is added into materials in a granulation disc in an atomized mode in the granulation process, and a ceramsite pore-forming matrix is prepared; mixing the casting waste ash and cement, adding a certain amount of first clear water, and stirring in a stirrer to generate a mixture; adding the mixture into a granulation disc, then adding a ceramsite pore-forming matrix wetted by water mist, mixing and granulating, and adding second clear water into the material in the granulation disc in an atomized form to prepare a semi-finished product of ceramsite; and feeding the semi-finished ceramsite into a storage yard for stacking and curing to prepare the sintering-free porous ceramsite. The problem of treatment and utilization of the casting waste ash is solved, the preparation process is simple, and the prepared sintering-free porous ceramsite is large in specific surface area, high in strength, low in density, high in porosity and wide in application field.

Description

technical field [0001] The invention relates to the technical field of ceramsite preparation, more specifically, to a non-sintering-free porous ceramsite and its preparation process. Background technique [0002] The existing ceramsite is mainly processed and granulated from raw materials such as clay, shale, and sludge, and then sintered or expanded at high temperature. It is a light aggregate. Among them, clay materials are mainly obtained from cultivated land, and shale needs to be excavated to obtain rocks. The acquisition of these two ceramsite raw materials will destroy the ecological environment, which is not in line with the sustainable development strategy, nor in line with my country's basic national policy of emphasizing environmental protection and energy conservation. Although the sludge raw material does not damage the ecological environment, the sludge from the sewage treatment plant is very easy to release toxic substances; the sludge cannot be used directly,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B38/00C04B18/14
CPCC04B28/00C04B38/009C04B18/149C04B22/002Y02W30/91
Inventor 李卓情尹海军冯俊龙包羽冲孙贤洋
Owner 北京仁创砂业铸造材料有限公司
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