Preparation method of aerated concrete block

A technology of aerated concrete and blocks, which is applied in the manufacture of tools, ceramic products, applications, etc., can solve the problems of no multi-layer void structure, reduced load-bearing and compressive capacity, poor thermal insulation performance, etc., and reach the curing temperature Effects of reduction, mechanical strength enhancement, and binding force enhancement

Inactive Publication Date: 2020-04-24
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem mainly solved by the present invention is that the ordinary aerated concrete block has a hollow structure and does not have a multi-layer void structure, which leads to poor thermal insulation perform

Method used

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  • Preparation method of aerated concrete block

Examples

Experimental program
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Effect test

Example Embodiment

[0028] Example 1

[0029] Take the calcium carbide and place it in a ball mill for ball milling to obtain calcium carbide particles with a particle size of 0.5 mm. Place 80 mL of semi-dry oil in a beaker and heat to 200°C. Add the calcium carbide particles into the beaker and stir for 20 minutes to obtain a modified surface. The calcium carbide particles are then ground in a grinder for 3 hours and passed through a 100-mesh sieve to obtain modified calcium carbide powder. The semi-dry oil is one or more combinations of soybean oil, bran oil, sunflower oil and corn oil; The red clay was washed with water, and the sand and gravel was filtered with ordinary wire mesh to obtain the red clay suspension. The red clay suspension was filtered with a suction filter. The red clay obtained by the suction filter was heated to 100°C, dried for 3 hours, and then placed in the grinder The refined laterite material is obtained by medium grinding through a 100 mesh sieve; in parts by weight, 30 p...

Example Embodiment

[0030] Example 2

[0031] Take the calcium carbide and place it in a ball mill for ball milling to obtain calcium carbide particles with a particle size of 0.8mm. Place 85 mL of semi-dry oil in a beaker and heat to 210°C. Add the calcium carbide particles into the beaker and stir for 23 minutes to obtain a surface modified The calcium carbide particles are then ground in a grinder for 3 hours and passed through a 100-mesh sieve to obtain modified calcium carbide powder. The semi-dry oil is one or more combinations of soybean oil, bran oil, sunflower oil and corn oil; The red clay is washed with water, and the sand and gravel is filtered with ordinary wire mesh to obtain the red clay suspension. The red clay suspension is suction filtered with a suction filter. The red clay obtained by the suction filter is heated to 105°C, dried for 4 hours, and then placed in the grinder The refined laterite material is obtained by medium grinding through a 100-mesh sieve; in parts by weight, 40...

Example Embodiment

[0032] Example 3

[0033] Take the calcium carbide and place it in a ball mill for ball milling to obtain calcium carbide particles with a particle size of 1.0mm. Place 90 mL of semi-dry oil in a beaker and heat to 220°C. Add the calcium carbide particles into the beaker and stir for 25 minutes to obtain a surface-modified calcium carbide. The granules were then ground in a grinder for 4 hours, and passed through a 100-mesh sieve to obtain modified calcium carbide powder. The semi-dry oil is a combination of one or more of soybean oil, bran oil, sunflower oil and corn oil; Wash with water, filter to remove sand and gravel with ordinary wire mesh to obtain red clay suspension. Suction the red clay suspension with suction filter. Heat the red clay obtained by suction to 110℃, dry for 4 hours, and then place it in the grinder Grind through a 100-mesh sieve to obtain refined laterite material; in parts by weight, 50 parts of iron tailings, 45 parts of ordinary Portland cement, 15 par...

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Abstract

The invention discloses a preparation method of an aerated concrete block, which belongs to the technical field of preparation of building materials. According to the invention, calcium carbide subjected to semi-dry oil surface modification is used as an air entraining agent; and a plurality of effective components are used as air inlet components. The porous rock wool fibers are coupled with themodified calcium carbide powder; the fiber strength is improved, the red mud contains aluminum oxide, calcium oxide and other metal oxides; the aluminum oxide exists in the red mud in the form of crystalline fibers; after pressing and sintering, the crystalline fibers are longitudinally oriented in the aerated concrete block and are crossed and wound with the porous rock cotton fibers in the aerated concrete block to form a woven mesh, so that the mechanical strength of the aerated concrete block is further enhanced, the heat preservation and insulation performance of the aerated concrete block is improved, and the application prospect is wide.

Description

technical field [0001] The invention discloses a method for preparing an aerated concrete block, which belongs to the technical field of building material preparation. Background technique [0002] Air-entrained concrete block is a new type of building material that is lightweight, porous, thermal insulation, good fire resistance, nailable, sawable, planable, and has certain earthquake resistance. As early as the early 1930s, China began to produce this product and it was widely used. [0003] The aerated concrete block is a solid block made of cement, slag, sand, lime, etc., added with an air-generating agent, stirred and formed, and autoclaved. According to the application, the aerated concrete can be divided into non-load-bearing blocks , load-bearing blocks, insulation blocks, wall panels and roof panels five. [0004] Air-entrained concrete blocks have light bulk density, heat preservation, heat insulation, sound insulation, and are easy to process. They are made of v...

Claims

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Application Information

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IPC IPC(8): C04B28/14C04B38/02C04B38/08C04B38/10C04B20/02B28B1/52B28B1/50C04B111/40
CPCB28B1/50B28B1/52C04B20/023C04B20/026C04B28/14C04B38/02C04B38/08C04B38/10C04B2111/40C04B2201/50C04B18/12C04B7/02C04B14/06C04B7/34C04B14/04C04B14/322C04B14/46C04B24/42
Inventor 解正祥
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