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Method of preparing foam glass based on boric sludge

A technology of foam glass and boron mud, which is applied in the field of functional inorganic materials, can solve the problem of small dosage, and achieve the effect that is conducive to circular economy and sustainable development

Inactive Publication Date: 2007-10-24
DALIAN UNIV OF TECH
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  • Summary
  • Abstract
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AI Technical Summary

Problems solved by technology

The existing treatment method is to stack it in a certain area to limit emissions, and individual factories mix it with other ingredients to prepare fired bricks, but the amount is very small

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Grind and pulverize 100g of waste glass to 100-200 mesh, then mix with 40-70g of demagnesia boron mud, heat to 900-1300°C, keep warm for 20-40min; after quenching, grind it into glass powder; then add 3-15g of sodium carbonate, 1-5g of borax, 2-6g of sodium phosphate, put into the mold, and sinter according to the following sintering system: start to heat up to 530-570°C at a speed of 20-25°C / min, keep the temperature for 20-30min, and continue to heat up to 760-800°C ℃, constant temperature for 30-40min, then cooling at 25-30℃ / min to 500-550℃, constant temperature for 50-70min, and finally annealing at 1.5-5℃ / min to 100-200℃, the product blank has good foaming effect, Without cracking, it belongs to thermal insulation foam glass. Product performance: apparent density: 160±30Kg / m3; water absorption: 0.5±0.4vol%; average cell diameter: 1.2±0.4mm; thermal conductivity: 0.060±0.030w / m.k.

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PUM

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Abstract

The invention discloses a making method of foam glass based on boron mud in the functional inorganic material technical domain, which comprises the following steps: blending the broken waste glass and magnesium-stripping boron-mud according to proportion; grinding into raw material; heating and fusing the raw material; quenching; drying; grinding into glass powder; adding foamier and booster solvent to form the foam glass mating slurry; placing the mating slurry into the mould; pressing; shaping; heating; foaming; stabilizing the foam; annealing; obtaining the foam glass; adjusting the foam-pore structure according to the adjusted component and technique condition; reaching the goal of insulation, silence or water-retaining.

Description

technical field [0001] A method for producing foam glass based on boron mud belongs to the technical field of functional inorganic materials. Background technique [0002] Boron mud is the main waste of the boron chemical industry, which is produced in the process of extracting borax from boron ore or boron-magnesium ore. Millions of tons of boron mud are discharged every year, which not only takes up a lot of land, but also seriously pollutes the environment. The main components of boron mud are magnesium oxide, silicon oxide, calcium oxide, iron oxide and boron-containing insoluble matter. The existing treatment method is to stack it in a certain area to limit discharge, and individual factories mix it with other components to prepare fired bricks, but the amount is very small. The latest scientific method is to convert about 40% of the magnesium oxide into chemical products such as magnesium carbonate or magnesium hydroxide flame retardant, and mix the remaining 50% of ...

Claims

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Application Information

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IPC IPC(8): C03C11/00
Inventor 宁桂玲颜峰孙博林源
Owner DALIAN UNIV OF TECH
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