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Sulfur magnesium cement building material processing method

A processing method and sulfur-magnesium technology, applied in the field of building materials, can solve the problems of easy return to halogen and whitening on the surface, limited application of magnesium cement, easy warping and deformation of steel bars, etc. It is difficult to reduce apparent density and bulk density and improve quality. Control and improve the effect of thermal insulation performance

Inactive Publication Date: 2015-08-05
张禹 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The existing magnesium chloride cement products mainly have the following serious defects, that is, poor water resistance, easy to return brine and whiten the surface, easy to warp and deform, and have strong corrosion to steel bars, which greatly limits the application of magnesium cement

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Prepare sulfur-magnesium blended dilution: mix 10 kg of sulfuric acid with a concentration of 50% and 0.5 kg of magnesium sulfate heptahydrate to prepare sulfur-magnesium blended liquid, add water to dilute the sulfur-magnesium blended liquid into sulfur-magnesium blended diluted liquid, and its mass concentration is 15 %,spare.

[0016] Preparation of magnesium cement slurry: take 100kg of light-burned magnesium oxide, its active ingredient content is 70-85%, and its fineness is 150-200 mesh. Get fly ash 10Kg. Put 100kg of light-burned magnesia and 10Kg of fly ash into the mixer and stir, add 80kg of sulfur-magnesium diluent to stir and mix, and then add 0.5Kg of modifier during the stirring and mixing, and stir well to get the magnesium oxysulfide cement cementitious material . The modifying agent is phosphate, and the phosphate can be any one of potassium dihydrogen phosphate, ammonium dihydrogen phosphate, sodium dihydrogen phosphate, and magnesium phosphate.

[...

Embodiment 2

[0019] Preparation of sulfur-magnesium blended dilution: 50 kg of sulfuric acid with a concentration of 50% is mixed with 2.5 kg of magnesium sulfate heptahydrate to prepare a sulfur-magnesium blend, and the sulfur-magnesium blend is diluted with water to become a sulfur-magnesium blended dilution with a mass concentration of 20 %,spare.

[0020] Preparation of straw fiber: take one or two or more of rice straw, wheat straw, corn stalk or cotton stalk, and after rolling, carding and cutting, get straw fiber with a length of 10-20mm and a diameter of 0.2-1mm, and set aside .

[0021] Preparation of magnesium cement slurry: take 100kg of light-burned magnesium oxide, its active ingredient content is 70-85%, and its fineness is 150-200 mesh. Get 30Kg of fly ash. Put 100kg of light-burned magnesium oxide and 30Kg of fly ash into the mixer and stir, add 90kg of sulfur-magnesium diluent to stir and mix, and then add 0.75Kg of modifier during stirring and mixing. The modifier is bo...

Embodiment 3

[0023] Preparation of sulfur-magnesium blended dilution: 50 kg of sulfuric acid with a concentration of 50% is mixed with 2.5 kg of magnesium sulfate heptahydrate to obtain a sulfur-magnesium blended liquid, and the sulfur-magnesium blended liquid is diluted with water to become a sulfur-magnesium blended diluted liquid with a mass concentration of 25 %,spare.

[0024] Preparation of straw fiber: take one or two or more of rice straw, wheat straw, corn stalk or cotton stalk, and after rolling, carding and cutting, get straw fiber with a length of 10-20mm and a diameter of 0.2-1mm, and set aside .

[0025] Preparation of magnesium cement slurry: take 100kg of light-burned magnesium oxide, its active ingredient content is 70-85%, and its fineness is 150-200 mesh. Get 60Kg of fly ash. Put 100kg of light-burned magnesium oxide and 60Kg of fly ash into the mixer and stir, add sulfur and magnesium to adjust the diluent 100kg and stir and mix, and then add 1Kg of modifier during st...

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Abstract

The invention discloses a sulfur magnesium cement building material processing method which includes the steps: preparing and diluting sulfur magnesium mixing liquid; mixing magnesium oxide, coal ash and modifiers to prepare magnesium oxysulfate cement gel materials; injecting discharged materials into a building material mould, curing building materials for 8-12 hours within the environmental temperature range of 15-40 DEG C, demoulding the building materials and continuing curing the demoulded building materials for 25-28 days under the condition of environmental temperature reaching 15-40 DEG C and relative air humidity reaching 30-65%. The modifiers include any of phosphate, boric acid or citric acid, and the phosphate includes any of monopotassium phosphate, ammonium dihydrogen phosphate, sodium dihydrogen phosphate and magnesium phosphate. A glass fiber woven mesh fabric is laid at the bottom of the building material mould. The sulfur magnesium mixing liquid replaces magnesium chloride water solution in the prior art, magnesium chloride with strong activity and poor stability is removed, the technical problem of difficulty in controlling the magnesium cement building materials is fundamentally solved, and long-term difficultly solved problems of scumming, buckling deformation and corrosion of metal components caused by chloride ions are solved.

Description

technical field [0001] The invention belongs to building materials, in particular to a processing method of sulfur-magnesium cement building materials. Background technique [0002] The existing magnesium chloride cement products mainly have the following serious defects, that is, poor water resistance, easy to brine and whiten the surface, easy warping and deformation, and strong corrosion to steel bars, which greatly limit the application of magnesium cement. [0003] The root cause of the above serious defects in magnesium chloride cement products is the use of magnesium chloride blending solution containing chloride ions, so improving the blending solution is a new research direction. Contents of the invention [0004] The present invention discloses a processing method of sulfur-magnesium cement building materials in order to solve the above-mentioned serious defects existing in existing magnesium cement products. [0005] Its processing method of sulfur-magnesium ce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/30B28B11/24B28B1/52
Inventor 张禹章玉静张永胜
Owner 张禹
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