Garbage fly ash microwave sintering process based on superfine grinding technology

A technology of garbage fly ash and microwave sintering, which is used in the removal of solid waste, chemical instruments and methods, transportation and packaging, etc., can solve the problems of high energy consumption, increase the cost of garbage fly ash, etc. The effect of reduced processing cost and process difficulty, and abundant raw material sources

Inactive Publication Date: 2022-05-10
谢飞
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Problems solved by technology

[0004] The effect of microwave sintering depends to a certain extent on the size of microwave sintering powder. Although the ultrafine powder produced by traditional ball milling technology can barely meet the needs of microwave sintering, it usually takes a lot of energy to produce ultrafine powder by ball milling. energy, substantially increasing the cost of waste fly ash

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  • Garbage fly ash microwave sintering process based on superfine grinding technology
  • Garbage fly ash microwave sintering process based on superfine grinding technology
  • Garbage fly ash microwave sintering process based on superfine grinding technology

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Embodiment 1

[0044] see Figure 1-2, a microwave sintering process of waste fly ash based on ultra-fine grinding technology, which mainly includes the following steps:

[0045] S1. Mixing of raw materials, the treated garbage fly ash, fly ash and rice husk ash are mixed according to the mass ratio of 60:25:15. In particular, the fly ash and rice husk ash can be made of steel slag and Quartz powder should be replaced, and the replacement ratio should not exceed one-third;

[0046] S2. Steam grinding. The raw materials mixed in S1 are put into the steam jet mill for ultra-fine grinding to obtain ultra-fine raw materials. The steam jet mill includes a raw material warehouse, a steam mill host, a high-temperature bag collector and a smoke Window, the screw feeder is connected between the raw material warehouse and the main machine of the steam mill, and the connecting pipe is connected between the main body of the steam mill and the high-temperature bag collector. A high-pressure induced dra...

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Abstract

The invention discloses a garbage fly ash microwave sintering process based on a superfine grinding technology, belongs to the field of fly ash microcrystal vitrification processes, and aims to solve the problem that water washing treatment is needed in traditional sintering by using a steam jet pulverization technology and a microwave sintering technology. According to the scheme, by adopting the microwave sintering technology, the treatment cost and the process difficulty are greatly reduced, volatilization of heavy metal is avoided through low-temperature sintering, the problem of subsequent treatment of secondary fly ash is avoided, landfill leachate is co-treated, zero discharge of wastewater is realized, and the economic benefit and the environmental protection benefit of a garbage power generation enterprise are effectively improved; compared with melting treatment, the sintering method is low in heat consumption, simple in chemical process and convenient to operate, the material and energy consumption in the curing process is low, the capacity increasing ratio is low, the raw materials are rich in source, low in price and easy to obtain, and the treatment cost is low.

Description

technical field [0001] The invention relates to the field of fly ash microcrystalline vitrification technology, in particular to a microwave sintering technology of garbage fly ash based on ultrafine grinding technology. Background technique [0002] Vitrification technology is an international cutting-edge technology for harmless incineration fly ash. The incineration fly ash and a certain amount of additives are melted at high temperature to form a glassy substance, which is cooled to form a chemically stable glass body or a substance similar to glass. The substance is fixed in the vitreous body to achieve stabilization, and the purpose of harmlessness is achieved by virtue of the low heavy metal leaching rate of the vitreous body. However, the vitrification temperature of incineration fly ash is high, about 1500 degrees Celsius. Such a high temperature consumes a lot of energy, and at the same time, a large amount of smoke and dust of heavy metals and acid gases are produ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/29B09B3/50B09B3/45B09B101/30
Inventor 谢飞
Owner 谢飞
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