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Microporous foamed glass prepared by taking waste glass as main raw material

A technology of microcellular foaming, the main raw material, applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve problems such as unevenness, high water absorption and thermal conductivity, and low porosity

Active Publication Date: 2021-05-11
SINOSTEEL MAANSHAN INST OF MINING RES +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The object of the present invention is to provide a foamed glass that uses waste glass as a Microcellular foamed glass prepared from main raw materials

Method used

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  • Microporous foamed glass prepared by taking waste glass as main raw material
  • Microporous foamed glass prepared by taking waste glass as main raw material
  • Microporous foamed glass prepared by taking waste glass as main raw material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Composition and mass percentage of foamed glass raw materials: waste glass 71.3%, albite 8.6%, hollow glass microspheres 10.29%, sodium nitrate 0.21%, borax 1.54%, boric acid 7.2%, fluorite 0.86%. Among them, the true density of hollow glass microspheres is 0.15g / cm 3 .

[0025] (1) Weigh waste glass, albite, sodium nitrate, borax, boric acid and fluorite according to the proportioning ratio, put zirconia grinding beads, raw materials, and water into the ball mill tank at a mass ratio of 2.6:1:0.35, and grind for 60 minutes. Obtain a uniform slurry; place the slurry in a blast drying oven and dry it at 110°C for 100 minutes; break up the dried material with an airflow crusher, and then mix it with hollow glass microspheres and 5% of the total mass of raw materials The binder was placed in a mixing tank and mixed for 25 minutes to prepare a billet.

[0026] (2) Put the prepared billet into a refractory abrasive mold covered with ceramic fiber paper, press it into a hig...

Embodiment 2

[0028] Composition and mass ratio of foamed glass raw materials: waste glass 68.5%, albite 15.1%, hollow glass microspheres 11.76%, sodium nitrate 0.18%, calcium carbonate 0.06%, borax 0.66%, boric acid 3.45%, fluorite 0.29%. Among them, the true density of hollow glass microspheres is 0.18g / cm 3 .

[0029] (1) Weigh waste glass, albite, sodium nitrate, calcium carbonate, borax, boric acid and fluorite according to the ratio, and put zirconia grinding beads, raw materials and water into the ball milling tank according to the mass ratio of 2.3:1:0.4, Grind for 110 minutes to obtain a uniform slurry; place the slurry in a blast drying oven and dry for 130 minutes at 110°C; break up the dried material with an airflow crusher, and then mix it with hollow glass microspheres and the total amount of raw materials The binder with a mass of 4.7% was placed in a stirring tank and mixed for 30 minutes to prepare a billet.

[0030] (2) Put the prepared blank into a refractory abrasive m...

Embodiment 3

[0032] Composition and mass ratio of foamed glass raw materials: waste glass 76.5%, albite 7.3%, hollow glass microspheres 4.86%, sodium nitrate 0.11%, calcium carbonate 0.03%, borax 2.01%, boric acid 8.28%, fluorite 0.91%. Among them, the true density of hollow glass microspheres is 0.15g / cm 3 .

[0033](1) Weigh waste glass, albite, sodium nitrate, calcium carbonate borax, boric acid and fluorite according to the ratio, put zirconia grinding beads, raw materials, and water into the ball mill tank at a mass ratio of 2.5:1:0.4, and grind 90 minutes to prepare a uniformly ground slurry; place the slurry in a blast drying oven and dry at 110°C for 100 minutes; break up the dried material with an airflow crusher, and then mix it with hollow glass microspheres and the raw material The total mass of 6.2% binder was placed in a stirring tank and mixed for 30 minutes to prepare a billet.

[0034] (2) Put the prepared blank into a refractory abrasive mold covered with ceramic fiber ...

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Abstract

The invention discloses microporous foamed glass prepared by taking waste glass as a main raw material. The microporous foamed glass is prepared from the following components in percentage by mass: 62.8 to 77.0 percent of waste glass, 7.3 to 16.8 percent of albite, 4.0 to 11.8 percent of hollow glass beads, 0.1 to 0.3 percent of sodium nitrate, 0.01 to 0.12 percent of calcium carbonate, 0.6 to 3.0 percent of borax, 3.1 to 9.5 percent of boric acid and 0.25 to 1.2 percent of fluorite. The true density of the hollow glass beads is 0.15-0.18 g / cm<3>, and the particle size of the hollow glass beads is 10-85 [mu]m. The preparation method comprises the following steps: firstly preparing a blank material, heating the blank material in a high-temperature furnace to 780-860 DEG C at a speed of 5-8 DEG C / min, preserving heat for 30-50 minutes, and then conducting cooling along with the furnace to obtain the microporous foamed glass. The hollow glass beads are adopted as a physical foaming agent, abnormal holes in the foaming process are effectively avoided, the prepared microporous foamed glass is low in volume weight, the closed porosity is larger than or equal to 91%, and the aperture less than 80 [mu]m, and the compressive strength and the thermal insulation performance of the material are remarkably improved.

Description

technical field [0001] The invention belongs to the technical field of comprehensive utilization of waste glass, and specifically relates to a kind of foamed glass prepared from waste glass as the main raw material, which can be widely used in the fields of chemical industry, environmental protection, construction, underground engineering, national defense and military industry, etc. Engineering, building insulation and energy saving, etc. Background technique [0002] Waste glass is the leftover material of the home construction industry, or the broken glass in daily life. Because the glass is difficult to degrade and has a sharp edge, it can only be landfilled in the past, occupying valuable land resources and increasing the environmental burden. There are millions of tons of waste glass produced in my country every year, which is a precious resource. Studies have shown that foam glass can be prepared from waste glass and other main raw materials. In the family of buildin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C11/00C03B19/08
CPCC03C11/007C03B19/08
Inventor 王冰星彭丽芬柳雷
Owner SINOSTEEL MAANSHAN INST OF MINING RES
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