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Fly ash sintering-expanded haydite, and energy-saving treatment method of fly ash

A treatment method and ceramsite technology, applied in ceramic products, applications, household appliances, etc., can solve the problems of no added value, no return of benefits, and incomplete implementation, so as to save fuel costs, increase strength, and reduce weather conditions. The effect of gas consumption

Active Publication Date: 2020-01-24
襄阳仁创铸造材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] At present, there is no public disclosure of the effective use of casting dust. The more conventional treatment method is burying. The burying will pollute the water, soil, and dust hazards, causing a series of environmental pollution. The second is to solidify the landfill, although it solves the problem of dust. problem, but no added value is generated, and the processing process will incur costs, without benefit returns, it is often not fully implemented

Method used

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  • Fly ash sintering-expanded haydite, and energy-saving treatment method of fly ash

Examples

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Comparison scheme
Effect test

Embodiment 1

[0039] A kind of energy-saving treatment method of foundry dust removal of the present embodiment, comprises the following steps:

[0040] (1) Mix 40kg of clay and 45kg of dedusting ash, add 15kg of clear water and stir into mud;

[0041] (2) Extrude and granulate the mud to form raw meal balls, the size of the raw meal balls is set according to actual production needs, and the raw meal balls are heated from room temperature at a constant heating rate , the heating rate is 5°C / min, the first time the temperature is raised to 500°C, and the heat preservation treatment is 60 minutes, and the second heat treatment is continued to 1000°C, and the heat preservation is 60 minutes, and the high-temperature ceramsite sand after influx is cooled in the cooling pipeline. Cooling by air cooling, the generated hot air is collected and used to supplement the heat source in the front section to heat the heat source of raw meal balls, the cooled ceramsite enters the vibrating screen, the tem...

Embodiment 2

[0043] A kind of energy-saving treatment method of foundry dust removal of the present embodiment, comprises the following steps:

[0044] (1) Mix 50kg of shale and 32kg of dedusting ash, add 18kg of clear water and stir into mud;

[0045](2) Extrude and granulate the mud to form raw meal balls, the size of the raw meal balls is set according to actual production needs, and the raw meal balls are heated from room temperature at a constant heating rate , the heating rate is 6°C / min, the temperature is raised to 520°C for the first time, heat preservation treatment is 50 minutes, the temperature is raised to 1020°C for the second time, heat preservation is 50 minutes, and the high-temperature ceramsite sand after inflating is cooled in the cooling pipeline. Cooling by air cooling, the generated hot air is collected and used to supplement the heat source in the front section to heat the heat source of raw meal balls, the cooled ceramsite enters the vibrating screen, the temperatu...

Embodiment 3

[0047] A kind of energy-saving processing method of foundry dust removal ash of the present embodiment, comprises the following steps:

[0048] (1) Mix 30kg of sludge, 25kg of shale and 45kg of dedusting ash, add 20kg of clear water and stir into mud;

[0049] (2) Extrude and granulate the mud to form raw meal balls, the size of the raw meal balls is set according to actual production needs, and the raw meal balls are heated from room temperature at a constant heating rate , the heating rate is 7.5°C / min, the first time the temperature is raised to 550°C, the heat preservation treatment is 45min, the second heat treatment is continued to 1050°C, the heat preservation is 45min, and the high temperature ceramsite sand after inflow is cooled by the cooling pipeline. Cooling by air cooling, the generated hot air is collected and used to supplement the heat source in the front section to heat the heat source of raw meal balls, the cooled ceramsite enters the vibrating screen, the t...

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Abstract

The invention relates to fly ash sintering-expanded haydite, an energy-saving treatment method of fly ash, and specifically an energy-saving treatment method of casting fly ash. The energy-saving method comprises the following steps: mixing a main material and fly ash, adding clear water, and stirring to form a muddy substance, wherein the main material one or a mixture of more components selectedfrom clay, shale, sludge and waste incineration substances; granulating the muddy substance to generate raw material balls, heating the raw material balls to 500-600 DEG C for the first time, carrying out heat preservation treatment, continuously carrying out heating treatment for a second time, cooling, and feeding an obtained product into a vibrating screen to obtain the fly ash sintering-expanded haydite with different particle sizes. According to the method, a large amount of heat is provided by fly ash in fly ash firing, so that the natural gas consumption of sintering-expanded haydite is reduced, the fuel cost is saved, the economic benefit can be improved compared with common haydite, and the energy-saving treatment method has the advantages of low energy consumption, good performance, no harm, wide range, recyclability and the like.

Description

technical field [0001] The invention belongs to the fields of solid waste treatment and environmental protection regeneration, and in particular relates to an energy-saving treatment method for dust-removing ash burnt ceramsite and dust-removing ash. Background technique [0002] With the development of the domestic economy, castings not only meet the needs of the domestic manufacturing industry, but also the export of castings is rising steadily. The total output of castings in my country is close to 50 million tons per year, and castings produced by sand molds account for more than 80% of the total. For every 1 ton of castings produced Produce 1.2 tons of waste sand and 0.3 tons of dust. It can be seen that the amount of dust removal is huge. [0003] Green mold sand is a molding material produced by castings composed of silica sand, bentonite, coal powder and water according to a certain ratio. It is the most widely used material in traditional casting in my country. Sand...

Claims

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Application Information

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IPC IPC(8): C04B35/622C04B38/06
CPCC04B35/62204C04B35/622C04B38/068C04B2235/349C04B2235/602C04B2235/656C04B2235/6562C04B2235/6567C04B2235/77C04B2235/96
Inventor 尹海军李卓情秦文兵秦申二
Owner 襄阳仁创铸造材料有限公司
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