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A microwave sintering method of industrial waste slag light ceramsite

A technology of microwave sintering and lightweight ceramsite, applied in the field of building materials, can solve the problems of long sintering time of waste incineration ash ceramsite, poor uniformity of sintered products, high energy consumption, etc. The effect of saving energy consumption

Active Publication Date: 2018-04-17
TIANJIN CHENGJIAN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the problems of long sintering time, high energy consumption, and poor uniformity of sintered products in the existing waste incineration ash ceramsite, the inventor has developed a method for sintering ceramsite using microwave sintering technology by virtue of his long-term practical experience, which not only retains These advantages of microwave technology are also used to improve the structure of materials and improve the performance of materials

Method used

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  • A microwave sintering method of industrial waste slag light ceramsite

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Experimental program
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Effect test

Embodiment 1

[0021] Take 25% of garbage incineration ash, 25% of sludge, 5% of chromium residue, 35% of clay and 10% of carbon black by weight, mix them; put them into a ball mill and grind them to less than 100 microns; then put them into a drum granulator, Atomize and spray water accounting for 14% to 25% of the weight of the powder, and prepare the material into spherical balls of 5 to 20 mm by stirring and rolling granulation; place the prepared balls in a drying box, Dry at 105°C for 12 hours.

[0022] Put the dried pellets into the crucible with sintered insulation structure, such as figure 1 As shown, then put the sintered heat preservation structure into the heating chamber of the microwave sintering furnace for sintering; the microwave frequency of the microwave sintering furnace is 2.45GHZ, when the temperature rises to 1100°C, keep it warm for 10 minutes; after the heat preservation is over, wait for the material to cool naturally Remove from room temperature.

[0023] The app...

Embodiment 2

[0025] Get garbage incineration ash 25%, sludge 40%, chrome slag 5%, clay 20% and carbon black 10% by weight; Microwave sintering temperature is 1200 ℃, holding time 10 minutes; All the other are the same as embodiment 1, get light pottery grain.

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Abstract

The invention discloses a microwave sintering method for preparing light ceramisite by using industrial waste residues. The microwave sintering method takes waste incineration ash, sludge, chromium slag, clay, carbon black and the like as raw materials, and the light ceramisite is prepared by the microwave sintering method. The microwave sintering method can be used for preparing the light ceramisite by consuming the various industrial waste residues, and the preparation and production process is free from environmental pollution and is environment-friendly and energy-saving, so that energy consumption is effectively reduced, and production time is shortened; the prepared light ceramisite can be used as lightweight aggregate for building.

Description

technical field [0001] The invention relates to a microwave sintering method of industrial waste slag lightweight ceramsite, belonging to the technical field of building materials. Background technique [0002] Generally, the production of ceramsite by using garbage incineration ash and other raw materials usually adopts the traditional normal temperature and pressure sintering method, which has the disadvantages of high sintering temperature, long sintering time, low energy efficiency, and large pollution. Large, sintered ceramsite has large porosity, uneven growth of ceramsite, and poor bonding density. [0003] Microwave sintering technology is a new type of material preparation technology. Its heating principle is a new rapid heating technology that uses the dielectric loss of materials in the microwave electromagnetic field to raise the overall temperature to a certain temperature. Compared with conventional electrothermal sintering, microwave heating is fast and effici...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B18/14C04B18/08C04B18/04C04B14/10C04B14/02
CPCC04B18/023C04B18/08C04B18/0418C04B18/144C04B14/10C04B14/022Y02W30/91
Inventor 张磊梁瑞华荣辉王雪平杨久俊
Owner TIANJIN CHENGJIAN UNIV
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