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Foamed ceramic wall material with steel slag as raw material and preparation method of foamed ceramic wall material

A technology of foam ceramics and wall materials, which is applied in the production of ceramic products, ceramic materials, clay products, etc., can solve the problems of low added value of products, and achieve the effects of low production costs, reduced production costs, and low water absorption

Active Publication Date: 2016-11-23
射阳县射阳港渔工贸开发有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Patents "A method for producing ceramic tiles using metallurgical steel slag" (CN101386528), "a ceramic floor tile with high strength doped with steel slag (CN104944917A), etc.; these methods can recycle steel slag, but the added value of the product is low

Method used

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  • Foamed ceramic wall material with steel slag as raw material and preparation method of foamed ceramic wall material
  • Foamed ceramic wall material with steel slag as raw material and preparation method of foamed ceramic wall material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] The ratio of raw materials designed in this embodiment is shown in Table 1.

[0029] Table 1 Embodiment 1 raw material proportioning

[0030] Example 1

Steel slag: coal gangue: talc

Additional straw: ferric oxide: carbon powder

mass ratio

66:24:10

6:7:3

[0031] The specific implementation steps are as follows:

[0032] Ball mill mixing: Weigh steel slag, coal gangue and talc according to the mass ratio of 66:24:10, add 6 parts of straw, 7 parts of carbon dioxide and 3 parts of carbon powder, ball mill for 2 hours, add water and mix;

[0033] Molding: Extrusion molding to get green body;

[0034] Firing: 20°C to 500°C, heat up for 96 minutes, hold at 500°C for 1 hour, 500°C to 1250°C, heat up for 120 minutes, hold at 1250°C for 2 hours, and cool down to room temperature naturally.

[0035] Performance test: According to Archimedes' law, the closed porosity of the foamed ceramics is 90%, the water absorption is 1.1%, and the density ...

Embodiment 2

[0037] The ratio of raw materials designed in this embodiment is shown in Table 2.

[0038] Table 2 Embodiment 2 raw material proportioning

[0039] Example 2

Steel slag: fluidized bed coal ash: silicomanganese slag

Additional straw: ferric oxide

mass ratio

22:50:28

18:3

[0040] The specific implementation steps are as follows:

[0041] Ball mill mixing: Weigh steel slag, fluidized bed coal ash, and silicomanganese slag at a mass ratio of 22:50:28, add 18 parts of straw, 3 parts of ferric oxide, and ball mill for 2 hours;

[0042] Molding: adding pulp waste liquid as a binder, extruding to obtain a green body;

[0043] Firing: 20°C to 500°C, heat up for 96 minutes, hold at 500°C for 1 hour, 500°C to 1020°C, heat up for 120 minutes, hold at 1020°C for 120 minutes, and cool to room temperature naturally.

[0044] Performance test: According to Archimedes' law, the closed porosity of foam ceramics is 86%, the water absorption rate is 2.1%, a...

Embodiment 3

[0046] The ratio of raw materials designed in this embodiment is shown in Table 3.

[0047] Table 3 Embodiment 3 raw material proportioning

[0048]

[0049]

[0050] The specific implementation steps are as follows:

[0051]Ball mill mixing: Weigh steel slag, calcium-increasing liquid slag, and magnesium slag at a mass ratio of 44:37:19, add 12 parts of straw, 4 parts of ferric oxide and 2.5 parts of carbon powder, and ball mill for 2 hours;

[0052] Forming: adding sugar waste liquid as a binder, molding at 5MPa to obtain a green body;

[0053] Firing: 20°C to 500°C, heating up for 96 minutes, holding at 500°C for 1 hour, heating at 500°C to 1165°C, heating up for 100 minutes, holding at 1165°C for 120 minutes, and cooling to room temperature naturally.

[0054] Performance test: According to Archimedes' law, the closed porosity of foam ceramics is 49%, the water absorption rate is 2.48%, and the density is 200kg / m 3 , the compressive strength measured by universal ...

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Abstract

The invention provides a foamed ceramic wall material with steel slag as the raw material. The foamed ceramic wall material is mainly prepared from, by weight, 22-66 parts of steel slag, 24-50 parts of aluminum-rich waste, 10-28 parts of magnesium-rich material, 6-18 parts of additional biologic material and 3-10 parts of foaming agent at low temperature through mixing, ball-milling, forming and sintering at a temperature of 1020-1250 DEG C. The prepared foamed ceramic wall material is low in production cost, waste is turned into wealth, air holes are not communicated and do not absorb water, and the foamed ceramic wall material has the advantages of being high in air hole closing rate, low in water absorption rate, high in tensile strength and the like and is a heat preservation and insulation wall material good in performance.

Description

technical field [0001] The invention belongs to the field of inorganic thermal insulation materials. In particular, it relates to a foamed ceramic wall material using steel slag as a raw material and a preparation method thereof. Background technique [0002] my country's steel output has been ranked first in the world for nearly 10 years. In 2009, my country's steel output reached 565 million tons. Every time 100 tons of steel is smelted, 10 to 15 tons of steel slag will be produced. The ways to use steel slag in my country include: returning to the furnace for sintering, road construction, engineering backfill, cement preparation, and other building materials. However, according to resource and effectiveness evaluation, the actual utilization rate of steel slag in my country is only about 10%, and unused steel slag occupies a large amount of land and seriously pollutes the environment. If steel slag can be made into a new mineral admixture, it will not only be of great s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/08C04B38/02C04B33/138C04B33/132C04B33/13
CPCC04B33/131C04B33/132C04B33/1321C04B33/1322C04B33/1352C04B33/138C04B38/02C04B38/068C04B2235/3445C04B2235/77C04B2235/96C04B38/0067Y02P40/60
Inventor 郭伟蒋金海刘甜甜苏志发焦宝祥程俊华韩朋德
Owner 射阳县射阳港渔工贸开发有限公司
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