High-strength ceramsite containing contaminated soil, and preparation method of high-strength ceramsite

A technology of polluting soil and high-strength ceramsite, which is applied to clay products, ceramic products, and other household appliances, can solve the problems of high energy consumption and high cost of ceramsite, reduce waste of resources, have a good market prospect, and avoid secondary The effect of secondary pollution

Inactive Publication Date: 2018-02-06
CHAMBROAD CHEM IND RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are mainly clay ceramsite and shale ceramsite with clay and shale as raw materials on the market. With the limited utilization of clay, shale and other resources, coupled with the high energy consumption of ceramsite production, the cost of ceramsite remains high.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A high-strength ceramsite containing polluted soil, the raw materials of which are fly ash, polluted soil and bentonite. In parts by weight, the raw material ratio is: 60 parts of fly ash, 30 parts of polluted soil and 10 parts of bentonite.

[0027] The specific steps of the preparation method of the high-strength ceramsite are as follows:

[0028] Raw material pretreatment: fly ash is directly conveyed from the thermoelectric fly ash storage bin to the on-site small fly ash storage bin by pneumatic force; polluted soil is the soil polluted by the external drainage of the paper mill, and the main components are quartz, feldspar and mica , hornblende, pyroxene and Al 2 o 3 , Fe 2 o 3 Some alkaline substances such as chromium, cadmium, barium, manganese, nickel, lead, mercury and other heavy metal elements, and due to the existence of many metal elements, can reduce the firing temperature, save energy, use the waste heat of the kiln for pre-drying, and reduce polluti...

Embodiment 2

[0035] A high-strength ceramsite containing polluted soil, the raw materials of which are fly ash, polluted soil and bentonite. In parts by weight, the raw material ratio is: 65 parts of fly ash, 25 parts of bentonite and 10 parts of bentonite.

[0036] The specific steps of the preparation method of the high-strength ceramsite are as follows:

[0037] Raw material pretreatment: fly ash is directly conveyed from the thermoelectric fly ash storage bin to the on-site small fly ash storage bin by pneumatic force; polluted soil is the soil polluted by the external drainage of the paper mill, and the main components are quartz, feldspar and mica , hornblende, pyroxene and Al 2 o 3 , Fe 2 o 3 Some alkaline substances such as chromium, cadmium, barium, manganese, nickel, lead, mercury and other heavy metal elements can not only be used as binders, but also because of the existence of many metal elements, it can reduce the firing temperature and save energy. Pre-dry the waste hea...

Embodiment 3

[0044] A high-strength ceramsite containing polluted soil, the raw materials of which are fly ash, polluted soil and bentonite. In parts by weight, the raw material ratio is: 70 parts of fly ash, 20 parts of polluted soil, and 10 parts of bentonite.

[0045] The specific steps of the preparation method of the high-strength ceramsite are as follows:

[0046] Raw material pretreatment: fly ash is directly transported from the thermoelectric fly ash storage bin to the on-site small fly ash storage bin by pneumatic force; the polluted soil is the polluted soil of the steel slag stacking site in the iron and steel smelter, and the main component is Al 2 o 3 , Fe 2 o 3 Some basic oxides such as chromium, cadmium, barium, manganese, nickel, lead, mercury and other heavy metal elements can not only be used as binders, but also because of the existence of many metal elements, the firing temperature can be reduced, energy can be saved, and the kiln can be used The residual heat of t...

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Abstract

The invention discloses high-strength ceramsite containing contaminated soil, and a preparation method of the high-strength ceramsite. The high-strength ceramsite is prepared from the following main raw materials: coal ash, the contaminated soil and bentonite; the preparation method comprises the steps of mixing the raw materials according to a proportion, granulating, drying, roasting, and cooling to obtain the high-strength ceramsite containing the contaminated soil. The high-strength ceramsite is produced by utilizing the coal ash, which is a by-product of local thermal power plants, and the industrial contaminated soil, so that the problem of local solid waste treatment is solved; the obtained high-strength ceramsite containing the contaminated soil is high in physical strength, good in chemical stability, low in stacking density and large in specific surface area and can be used for the fields such as building, water treatment and landscape art, and the production cost of the ceramsite is reduced; therefore, the high-strength ceramsite containing the contaminated soil has a good market prospect.

Description

technical field [0001] The invention belongs to the field of inorganic non-metallic materials, and in particular relates to a high-strength ceramsite containing polluted soil and a preparation method thereof. Background technique [0002] Fly ash is the most important by-product of thermal power plants. my country is a country dominated by thermal power generation. A large amount of fly ash will be discharged from the flue of thermal power generation, and the reserve of fly ash is quite considerable. And with the continuous development of my country's electric power industry, the discharge of fly ash is increasing year by year. At present, the disposal of fly ash is still dominated by ash yard storage, and the contradiction between storage and land occupation is becoming more and more prominent. Fly ash has great harm to natural resources such as soil, water resources, and air resources, and will indirectly cause harm to the human body. The use of fly ash in industrial wast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/02C04B33/135C04B33/132C04B33/32
CPCC04B33/132C04B33/1352C04B33/32C04B38/02C04B2235/77C04B2235/96C04B38/0067Y02P40/60
Inventor 马韵升史庆苓胡树峰姚刚包英王明军朱庆强王亮亮张林林
Owner CHAMBROAD CHEM IND RES INST CO LTD
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