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Method for producing hollow glass spheres by using waste glass

A technology of hollow glass microspheres and waste glass, applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve the problems of high cost and complicated production methods, and achieve the effects of saving energy, improving production efficiency, and reducing temperature

Inactive Publication Date: 2015-09-09
周佐石
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The production methods of the above two patents are complex and costly

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Wash and crush the waste glass, weigh 100kg of waste glass, add 5kg of feldspar, 1kg of talc, 1kg of soda ash, 4kg of limestone, 1kg of water glass, 1kg of zinc sulfate, and 2kg of calcium sulfate. The mixed material is ball milled and passed through 500 mesh Sieve, add 2kg of starch, 2kg of cellulose and 0.3kg of sodium dodecylbenzenesulfonate into 150kg of water, heat and stir to form a paste, mix the ground material with the paste evenly and spray dry to form granules. Heating spheroidization at 1150±20°C to obtain hollow glass microspheres. The prepared hollow glass microspheres have a suspension rate of 95% in water, a density of 0.42g / ml, a particle size of 94% in the range of 20-100 microns, and a breakage rate of 4.1% at 10MPa and 16% at 30MPa in the compressive strength test.

Embodiment 2

[0019] Wash and crush the waste glass, weigh 100kg of waste glass, add 6kg of feldspar, 5kg of talc, 2kg of soda ash, 4kg of limestone, 1kg of water glass, 1kg of zinc sulfate, and 2.5kg of calcium sulfate. Mesh sieve, add 2kg starch, 5kg cellulose and 0.3kg sodium dodecylsulfonate to 150kg water, heat and stir to form a paste, mix the ground material and paste evenly, spray dry to form granules, Heating spheroidization at 1150±20°C to obtain hollow glass microspheres. The prepared hollow glass microspheres have a suspension rate of 95% in water, a density of 0.32g / ml, a particle size of 96% in the range of 20-100 microns, and a breakage rate of 4.6% at 10MPa and 14% at 30MPa in the compressive strength test.

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PUM

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Abstract

The invention provides a method for producing hollow glass spheres by using waste glass, which comprises the following step: washing waste glass and crushing, adding 3-10% of feldspar, 0-6% of talcum, 1-3% of soda ash, 1-5% of limestone, 1-3% of soluble glass, 1-2% of white copperas zinc sulfate and 1-3% of calcium sulfate according to waste glass weight, performing ball milling on mixed material, adding paste containing starch and cellulose, performing spray drying at 1100-1200 DEG C, heating and spheroidizing to obtain the hollow glass spheres. By using the method of the invention, waste can be changed into valuables, production efficiency of the hollow glass spheres can be increased, and cost is reduced.

Description

technical field [0001] The invention relates to glass microspheres, in particular to a method for manufacturing hollow glass microspheres from waste glass. Background technique [0002] Hollow glass microsphere is a new type of material developed in recent years. It has low density and good thermal insulation performance, and is widely used in various light materials and thermal insulation materials. [0003] CN101704632A discloses a hollow glass microsphere and a preparation method thereof. ① Ingredients, the glass frit is composed of the following raw materials in the weight ratio: SiO2 70%-80%, Na2O 8%-12%, CaO 5%-9%, B2O3 2% to 6%, SO3 0.2% to 0.5%, K2O or Li2O 0 to 5%, ZnO or BaO 0 to 5%, Al2O3 0 to 3%; weigh the raw materials according to the chemical composition formula of the glass frit and mix them evenly;② Melting water quenching: put the uniformly mixed glass raw materials into the melting furnace for melting, the glass melting temperature is 1350 ° C ~ 1450 ° C,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C11/00C03C6/04C03B19/08
CPCY02P40/57
Inventor 周佐石
Owner 周佐石
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