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Production process and equipment for hollow glass microbeads

A technology of hollow glass microspheres and production process, which is applied in glass manufacturing equipment, glass molding, manufacturing tools, etc., can solve the problems of complex production process, poor chemical stability, low compressive strength, etc., and achieve good chemical stability, The effect of low cost and meeting performance requirements

Inactive Publication Date: 2011-10-19
JIAHUA SPECIAL CEMENT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to use vitreous minerals as raw materials to solve the problems of low compressive strength, poor chemical stability, complicated production process and difficult control in the background data, and to provide a new production process to produce high-performance, low-efficiency cost of hollow glass microspheres

Method used

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  • Production process and equipment for hollow glass microbeads
  • Production process and equipment for hollow glass microbeads
  • Production process and equipment for hollow glass microbeads

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The glassy minerals are crushed in the crusher 1 and then enter the pulverizer 2. The pulverized powder passes through the classifier 3 to sort out the powder with a particle size of 5 μm, and then enters the dryer 4 at a drying temperature of 300°C. , remove the free water in the powder, and the bound water content is 2wt%.

[0033] The powder enters the hollow glass microsphere expansion furnace 10 through pneumatic conveying, and passes through the high temperature expansion zone 11 and heat preservation and tempering zone 12 of the hollow glass microsphere expansion furnace 10 from top to bottom. The expansion temperature is 1000°C, and the heat preservation and tempering temperature is 800°C. The hollow glass microspheres go down with the high-temperature airflow, mixed with the controllable cooling air to cool and form, and finally the high-performance hollow glass microspheres are obtained through the collection component. The obtained hollow glass microspheres h...

Embodiment 2

[0038] The glassy minerals are crushed in the crusher 1 and enter the pulverizer 2. The pulverized powder passes through the classifier 3 to sort out the powder with a particle size of 200 μm, and then enters the dryer 4 with a drying temperature of 750°C. , remove the free water in the powder, and the bound water content is 0.1wt%.

[0039] The powder enters the hollow glass microsphere expansion furnace 10 through pneumatic conveying, and passes through the high temperature expansion zone 11 and heat preservation and tempering zone 12 of the hollow glass microsphere expansion furnace 10 from top to bottom. The expansion temperature is 1400°C, and the heat preservation and tempering temperature is 1150°C. The hollow glass microspheres go down with the high-temperature airflow, mixed with the controllable cooling air to cool and form, and finally the high-performance hollow glass microspheres are obtained through the collection component. The obtained hollow glass microspheres...

Embodiment 3

[0044] The glassy minerals are crushed in the crusher 1 and enter the pulverizer 2, and the pulverized powder passes through the classifier 3 to sort out the powder with a particle size of 40 μm, and then enters the dryer 4, and the drying temperature is 400°C , remove the free water in the powder, the bound water content is 0.6wt%.

[0045] The powder enters the hollow glass microsphere expansion furnace 10 through pneumatic conveying, and passes through the high temperature expansion zone 11 and heat preservation and tempering zone 12 of the hollow glass microsphere expansion furnace 10 from top to bottom. The expansion temperature is 1250°C, and the heat preservation and tempering temperature is 900°C. The hollow glass microspheres go down with the high-temperature airflow, mixed with the controllable cooling air to cool and form, and finally the high-performance hollow glass microspheres are obtained through the collection component. The obtained hollow glass microspheres ...

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Abstract

The invention relates to a production process and equipment for hollow glass microbeads. The production process comprises the following steps of: crushing and grinding perlite, pitchstone, obsidian, volcanic ash, diatomite and other natural glassy minerals used as raw materials, sorting the mineral powder with particle size of 5-200 mu m, drying at the temperature of 300-750 DEG C and controlling the bound water content at 0.1-2wt%; and conveying the mineral powder into a hollow glass microbead expansion furnace in a pneumatic conveying mode, controlling the high-temperature expansion temperature at 1000-1400 DEG C and heat-insulation quenching temperature at 800-1150 DEG C, then cooling and collecting to obtain high-performance hollow glass microbeads. The production process and equipment have the advantage of low cost and the prepared product has high performance. The high-performance hollow glass microbeads with different densities are produced by controlling the particle size, water content, expansion temperature, heat-insulation quenching temperature and time of the powder so as to meet the requirements of different industries on the performance of the hollow glass microbeads.

Description

technical field [0001] The invention relates to a production process and equipment for producing a light inorganic material. More specifically, the invention relates to a production process and equipment for hollow glass microspheres, belonging to the field of new inorganic materials. Background technique [0002] Hollow glass microspheres are spherical vitreous powders with a hollow structure. The particularity of the structure determines that it has the characteristics of low density, low thermal conductivity, good chemical stability, and good fluidity. It is added as a filler to various Among various materials, it can reduce density, heat insulation, and sound insulation, and is widely used in aviation, automobiles, building materials, chemicals, agriculture, petroleum and other industrial fields. [0003] According to different raw materials, there are two main production processes of hollow glass microspheres: [0004] Patent CN 1990401A introduces a preparation proces...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B19/10C04B20/06
Inventor 古安林阳运霞吴嘉富江龙陈东
Owner JIAHUA SPECIAL CEMENT