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Method for preparing hollow beads

A technology of hollow microspheres and agglomerates, applied in glass manufacturing equipment, manufacturing tools, glass molding, etc., can solve problems such as high energy consumption and cost, high requirements for production process control, uncontrollable product properties, etc., and achieve high performance Controllable, good weather resistance, high-quality and low-cost products

Inactive Publication Date: 2018-09-04
ZEROWASTE ASIA PTE LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of high energy consumption and cost of the existing hollow microsphere preparation method, uncontrollable product properties, and high requirements for production process control, to provide a solid waste that can be processed, protect the environment, and improve product quality. Preparation method of hollow microspheres with high quality, low cost and controllable properties

Method used

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  • Method for preparing hollow beads

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The preparation method of hollow microspheres in this example is to make solid waste, modifying agent, foaming agent and flux into powdery aggregates, and the powdery aggregates are sent into the spray combustion device, and undergo melting, expansion and rapid condensation process, preparing inorganic hollow microsphere materials with different particle sizes and different structures; the powder aggregates are by weight, and the solid waste is: 50% of waste glass, 30% of waste incineration bottom ash, 10% of fly ash bottom ash, Incineration bottom ash of water treatment sludge is 5%, modifier: 1% alumina, magnesia 1%, titanium dioxide 1%, foaming agent: calcium carbonate 1%, flux: lithium oxide 1%.

[0026] The preparation process of powdery agglomerates is as follows:

[0027] The solid waste, modifying agent, foaming agent and fluxing agent are crushed into fine powder with a particle size of 10 μm, and then the mixed fine powder is granulated by spray granulation eq...

Embodiment 2

[0033] In the preparation method of the hollow microspheres of this example, the solid waste is: waste glass 10%, water treatment sludge incineration bottom ash 3%, steel slag 1%, waste activated carbon 1%, modifier is: calcium silicate 10%, Calcium aluminosilicate 20%, tetraethyl orthosilicate 10%, sodium silicate 30%, foaming agent: silicon nitride 5%, fluxing agent: boron oxide 10%.

[0034] Crush solid waste, modifiers, foaming agents and fluxing agents into fine powders with a particle size of 0.1 μm, and then use spray granulation equipment to granulate the mixed fine powders to obtain powder agglomerates with an average particle size of 50 μm .

[0035] The mixture of methane and oxygen is used as the combustible gas, the temperature of the flame is 700°C, and the length of the flame is 0.5m; the powdery agglomerates are sent to the nozzle 4 through the powder inlet 1 at a speed of 1g / s for atomization, and finally, the obtained Hollow microspheres with an average part...

Embodiment 3

[0040] In the preparation method of the hollow microspheres of this example, the solid waste is: 60% of fly ash fly ash, 6% of river and lake bottom mud, 5% of sewage treatment sludge, 10% of steel slag, 10% of waste activated carbon, and the modifying agent is : Potassium silicate 1%, silicic acid 2%, foaming agent: silicon carbide 1%, carbon black 4%, fluxing agent: silicon dioxide 1%.

[0041] All the other are with embodiment two.

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Abstract

The invention relates to a method for preparing hollow beads and belongs to the field of environment protection. The method comprises the following steps: preparing powder aggregate from solid wastes,a modifier, a foaming agent and a fluxing agent, feeding the powder aggregate into an ejection combustion device, carrying out melting, and swelling and rapid condensation procedures, so as to obtainan inorganic hollow bead material with different granule sizes and different structures, wherein the powder aggregate comprises the following percentage by weight: 15-95% of solid wastes, 3-70% of the modifier, 1-5 parts of the foaming agent and 1-10% of the fluxing agent. By adopting the method, the defects that a conventional hollow bead preparation method is high in energy consumption, relatively high in cost, uncontrollable in product quality and in addition relatively high in production process control requirement, can be overcome, and by adopting the method for preparing the hollow beads, solid wastes can be treated, the environment can be protected, and a product is excellent in quality, low in price and controllable in property.

Description

Technical field [0001] The invention relates to the field of environmental protection, in particular to a method for preparing hollow microspheres. Background technique [0002] Hollow microspheres are hollow inorganic spheres, mainly composed of oxides or compounds of silicon and aluminum, with an outer diameter ranging from a few microns to thousands of microns. Hollow microspheres have good dispersion and fluidity, and have the characteristics of flame retardancy, electrical insulation, low density, low thermal conductivity, high chemical stability, and high compressive strength. It can be used as a high-quality filler in heat insulation materials, engineering plastics, modified rubber, electrical insulation parts, artificial stone and other products. Cenospheres are produced during coal combustion and can be isolated from fly ash, but sufficient yield cannot be guaranteed. Hollow microspheres can also be prepared by rapid condensation of chemical materials such as alum...

Claims

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Application Information

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IPC IPC(8): C03C11/00C03C6/08C03C6/02C03C6/10C03C6/00C03B19/08
CPCC03B19/08C03C1/00C03C1/002C03C11/007
Inventor 孙晓龙葛利丫王锦顺廖超毅林宇童杨为中
Owner ZEROWASTE ASIA PTE LTD
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