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A kind of magnesium chloride fireproof insulation board and method thereof prepared by using magnesite waste

A fire-proof insulation board and magnesite technology, which is applied in the field of chloride-magnesium fire-proof insulation board, can solve the problems of waste of fire-proof insulation board resources, magnesite waste polluting the environment, low fire protection level, etc., so as to solve the problem of resource regeneration and make up for resource waste. , the effect of low product cost

Inactive Publication Date: 2016-02-17
LIAONING HOAU MAGNESIUM BUILDING MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the above problems, and mainly solve the technical problems of existing magnesite waste polluting the environment, waste of resources, high cost and low fire protection level in the existing fireproof insulation board

Method used

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  • A kind of magnesium chloride fireproof insulation board and method thereof prepared by using magnesite waste

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Embodiment 1

[0017] The invention discloses a magnesium chloride fire-proof insulation board prepared by using waste magnesite, and the insulation board is mainly prepared from MgO raw material (weight %) and magnesium chloride composite solution. Among them, the content of MgO is 83%, other impurities SiO 2 7%; CaO5%; Fe 2 o 3 4%;Al 2 o 3 1%, the loss on ignition of the above ingredients is 2%-2.5%, and the active magnesium oxide is >50%. Magnesium chloride composite solution is made up of following raw material by weight share: Magnesium chloride (MgCl 2 ) 1 part; 3 parts of water; ferrous sulfate (FeSO 4 .7H 2 O) 0.01 part; trisodium phosphate (Na 3 PO 4 .12H 2 O) 0.005 parts; phosphoric acid (H 3 PO 4 ) 0.024 parts; calcium stearate (C 36 h 70 CaO 4 ) 0.018 parts; bentonite 0.015 parts; wollastonite (CaSiO 3 ) 0.008 part, wherein the purity of magnesium chloride is not less than 97%.

[0018] Above-mentioned magnesium chloride fireproof insulation board is prepared by f...

Embodiment 2

[0027] The invention discloses a magnesium chloride fire-proof insulation board prepared by using waste magnesite, and the insulation board is mainly prepared from MgO raw material (weight %) and magnesium chloride composite solution. Among them, the content of MgO is 95%, and the other components are SiO 2 2.5%; CaO1.5%; Fe 2 o 3 0.7%;Al 2 o 3 0.3%, the loss on ignition of the above ingredients is 2%-2.5%, active magnesium oxide> 50%. Magnesium chloride composite solution is made up of following raw material by weight share: Magnesium chloride (MgCl 2 ) 1 part; 2.5 parts of water; ferrous sulfate (FeSO 4 .7H 2 O) 0.02 part; trisodium phosphate (Na 3 PO 4 .12H 2 O) 0.006 parts; phosphoric acid (H 3 PO 4 ) 0.025 parts; calcium stearate (C 36 h 70 CaO 4 ) 0.019 parts; bentonite 0.02 parts; wollastonite (CaSiO 3 ) 0.009 parts, wherein the purity of magnesium chloride is not less than 97%.

[0028] Preparation method is identical with embodiment 1

[0029] The tec...

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Abstract

The invention relates to a magnesium chloride fireproof insulation board prepared by utilizing magnesite wastes and a preparation method of the insulation board, mainly solving the technical problems of resource waste, high cost, environment pollution and low fireproof grade in the prior art. The insulation board is mainly prepared from a MgO raw material and a magnesium chloride compounding solution, wherein the MgO raw material contains 83% to 95% of MgO, 22.5% to 7% of SiO2, 1.5% to 5% of CaO, 0.7% to 4% of Fe2O3 and 0.1% to 1.5% of Al2O3; the magnesium chloride compounding solution is prepared from the following raw materials in parts by weight: 1 part of magnesium chloride, 2.5 to 3 parts of water, 0.01 to 0.02 part of ferrous sulfate, 0.005 to 0.007 part of trisodium phosphate, 0.024 to 0.027 part of phosphoric acid, 0.018 to 0.024 part of calcium stearate, 0.015 to 0.02 part of bentonite and 0.008 to 0.009 part of wollastonite. The preparation method comprises the following steps of weighing, stirring, molding, cutting, curing and the like. The magnesite wastes are effectively utilized, so that the problem of resource regeneration is solved, namely, the defects of high cost, environment pollution and low fireproof grade in the prior art are overcome; the insulation board provided by the invention has the characteristics of reasonable formula, simple preparation method and high fireproof grade, and is easy to popularize.

Description

technical field [0001] The invention relates to a magnesium chloride fireproof heat preservation board, specifically a magnesium chloride fireproof heat preservation board prepared from waste magnesite and a method thereof, belonging to the technical field of utilization of renewable resources and manufacture and application of fireproof heat preservation materials. Background technique [0002] my country has the largest reserves of magnesite in the world. With the increase of the mining period, high-quality and high-grade magnesite has become very rare. The ensuing problem is that mine waste and low-grade magnesite not only occupy a large amount of land, Destruction of vegetation, and dust in windy days, loss in rainy days, and air pollution, how to rationally utilize these waste materials is an urgent technical problem to be solved. In addition, the existing fireproof insulation boards that can meet the A-class fireproof standard include rock wool boards, foamed ceramic bo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/32C04B111/28
Inventor 李广达毕德利谢锋杰
Owner LIAONING HOAU MAGNESIUM BUILDING MATERIALS CO LTD