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Method for producing burning free type ceramsites of magnesium substrate

A technology of ceramsite and magnesia, which is applied in the field of building materials, can solve the problems of poor corrosion resistance, moisture absorption and brine return, and high water absorption rate of magnesium cement, so as to optimize the production process, reduce product costs, and improve the water absorption rate. Effect

Inactive Publication Date: 2005-12-28
DALIAN UNIV OF TECH
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Problems solved by technology

The dense shell formed on the ceramic blank by waterproof coating solves the disadvantages of magnesium cement products absorbing moisture and returning to brine; at the same time, it solves the problems of high water absorption and poor corrosion resistance of magnesium cement

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  • Method for producing burning free type ceramsites of magnesium substrate
  • Method for producing burning free type ceramsites of magnesium substrate

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Embodiment Construction

[0010] The specific production steps and the best embodiment of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0011] Specific production steps

[0012] Step 1: Prepare the magnesia cement required for the test.

[0013] Mix magnesite and magnesium chloride by MgO / MgCl 2 = 4-6 molar ratio ingredients, adding filler fly ash, grinding in a ball mill for 2 hours, drying for later use. The grinding particles are uniform and meet the requirements of the national standard for cement.

[0014] Step 2: Preparation of magnesia ceramsite body

[0015] After mixing the magnesia cement with water, add the self-developed foaming agent to foam. The maximum volume of the sample is 200×400×600mm 3 , which is 0.144m 3 , the volume of industrial production is 2m 3 .

[0016] After the initial setting of the magnesia cement, it is dripped into a ball forming tray to form a ball to make a porous magnesia ceramsite body, which is the...

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Abstract

A method for producing non-fired magnesia ceramsite belongs to the technical field of building materials, especially involving the use of magnesia, MgCl 2 As the main raw material, fly ash is used as the filler, and the natural maintenance non-sintering type corrosion-resistant light-weight high-strength ceramsite technology developed by foaming technology. It is characterized in that: the whole technological process, the ratio of each component in the foaming process, and the surface of the ceramsite body is sprayed with waterproof paint to seal. The invention achieves the purpose of improving the properties of magnesium cement products such as moisture absorption and brine return, high water absorption rate and poor corrosion resistance through optimization of the production process of ceramsite, especially the use of chloride ion scavenger and water repellent in the ingredients. At the same time, natural resources and industrial waste residues are fully utilized in production, reducing environmental pollution, and MgCl 2 The energy-saving properties of phase change also make ceramsite have thermal insulation properties. The production process of this product is simple, the product cost is reduced, and it has obvious social and economic benefits.

Description

technical field [0001] The invention belongs to the technical field of building materials, and in particular relates to the use of magnesite, MgCl 2 As the main raw material, fly ash is used as the filler, and the foaming technology is used to develop the natural maintenance, non-sintering, corrosion-resistant, light-weight and high-strength ceramsite technology. Background technique [0002] Ceramsite belongs to man-made light aggregate, and there are many types due to different classifications. According to the production process, it can be divided into two categories: sintered type and non-fired type. According to different raw materials, it can be divided into clay ceramsite, shale ceramsite, and fly ash Granite, pumice ceramsite, glass ceramsite, diatomite ceramsite, etc. more than a dozen varieties. Ceramsite has a development history of more than 80 years in the world, and the research on ceramsite in my country has a history of more than 40 years. In terms of the p...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/00C04B38/02
Inventor 王立久曹明莉
Owner DALIAN UNIV OF TECH
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