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Haydite and preparation method thereof

A technology of ceramsite and ceramic factory, which is applied in the field of preparation of ceramsite, can solve the problems of failure to achieve the same effect of clay ceramsite, and achieve the effect of improving thermal expansion and contraction value and good thermal stability

Inactive Publication Date: 2012-02-15
中山建华墙体材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Other alternative materials that appeared later, such as fly ash and river silt, failed to achieve the same effect as clay ceramsite in terms of product performance, especially the contradictory relationship between bulk density and strength.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] According to the ratio of 40% of waste tailings from ceramic factories, 30% of bentonite, and 30% of water treatment sludge, the raw materials are crushed and mixed, and stirred evenly to obtain composite semi-finished soil materials. The composite semi-finished soil materials are air-dried in the open until the moisture content is 23%, put it into a granulator for granulation; send the granulated particles into a rotary kiln for firing, adjust the kiln speed and fuel supply according to the firing effect, and obtain a loose bulk density of 300kg / m 3 , Cylinder compressive strength 2MPa, 5-30mm continuously graded ceramsite.

Embodiment 2

[0031] According to the ratio of 50% of the waste tailings of the ceramic factory and 50% of the water treatment sludge, the raw materials are crushed, mixed, and evenly stirred to obtain a composite semi-finished soil material. The composite semi-finished soil material is air-dried to a moisture content of 24%, and put Put the granules into the granulator for granulation; send the granulated particles into the rotary kiln for firing, adjust the kiln speed and fuel supply according to the firing effect, and obtain a loose bulk density of 500kg / m 3 , cylinder compressive strength 4MPa, 5-30mm continuous graded ceramsite.

Embodiment 3

[0033] According to the ratio of 60% of the waste tailings of the ceramic factory and 40% of the bentonite, the raw materials are crushed and mixed, and stirred evenly to obtain a composite semi-finished soil material. The composite semi-finished soil material is dried in the open air to a moisture content of 18%, and put into granulation The granulation is carried out in the machine; the granulated particles are sent to the rotary kiln for firing, and the kiln speed and fuel supply are adjusted according to the firing effect to obtain a loose bulk density of 600kg / m 3 , Cylinder compressive strength 8MPa, 5-30mm continuously graded ceramsite.

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Abstract

The invention discloses a haydite and a preparation method thereof. The haydite is characterized by comprising the following components in percentage by weight: 40-100% of ceramic factory waste tail mud, 0-40% of bentonite and 0-50% of water treatment sludge. The preparation method comprises the following steps: 1) crushing the raw materials, mixing, and evenly stirring to obtain a composite semi-finished earth material; naturally drying or baking the semi-finished earth material until the water content is 15-25%, and granulating in a granulator; and 2) firing the granules in a rotary kiln while adjusting the rotation speed of the kiln and the supply amount of fuel according to the firing effect, thereby obtaining the 5-30mm continuous grading haydite. In order to overcome the defects in the prior art, the invention provides an environment-friendly haydite capable of substituting clay as a raw material. The invention also aims to provide a preparation method of the haydite.

Description

technical field [0001] The invention relates to a ceramsite, and also relates to a method for preparing the ceramsite. Background technique [0002] In recent years, my country's wall reform policy has been deepened and its implementation has been gradually strengthened, thus creating a huge market space for the development of new building materials. As a lightweight aggregate for construction, ceramsite has attracted great attention for its light weight, heat preservation, waste utilization, and environmental protection. The lightweight aggregate concrete hollow blocks, beams, and slabs made of it have become high-tech products for the development of new wall materials in my country. [0003] The traditional raw materials for the production of ceramsite mainly include shale and clay. Different raw materials have different production processes and performance indicators of their products. Generally speaking, the expansion ratio of clay is relatively large, the bulk densit...

Claims

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Application Information

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IPC IPC(8): C04B38/00C04B33/132
CPCY02P40/60
Inventor 宋震峰
Owner 中山建华墙体材料有限公司
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