Method for preparing light high-strength foaming ceramics

A technology of foaming ceramics and high-temperature foaming agent, which is applied in the direction of ceramic products, ceramic material production, clay products, etc., can solve the problems of difficult industrial waste disposal, low strength, high cost, etc., and achieve remarkable heat insulation effect and waterproof Excellent performance and high compressive strength

Active Publication Date: 2016-11-30
YANCHENG INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Purpose of the invention: To address the shortcomings of existing products such as high density, low strength, and poor thermal insulation performance; limited source of raw materials, many production equipment, complicated production process, high cost, time-consuming and energy-consuming, and pollution to the environment, etc. , the present invention takes industrial waste slag such as steel slag as main raw materials, and adds biomass powder as pore-forming agent and high-temperature foaming agent to prepare foamed ceramics
The invention not only can obtain foamed ceramics with good performance, but also solves the problems of difficult treatment of industrial waste residue, high cost of foamed ceramics and complicated preparation methods

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Raw material preparation: wash, dry, and grind rice husks to prepare rice husk powder; grind steel slag with a jaw crusher and a planetary ball mill, and pass through a 120-mesh sieve to obtain powder;

[0027] Mixing: Weigh steel slag, magnesium slag and pyrite cinder according to the mass ratio of 36:30:34, mix 20 parts of rice husk powder and 6 parts of manganese dioxide evenly, add 8% polyvinyl alcohol (5wt%), Grinding and granulating, passing through a 120-mesh sieve to obtain a billet;

[0028] Molding: Molding the blank under 10MPa to obtain the green body;

[0029] Firing: After drying the green body, put it into a sagger filled with alumina powder, place the sagger in a high-temperature furnace, raise the temperature to 1500°C and keep it for 120 minutes to obtain light-weight and high-strength foamed ceramics.

[0030] Performance test: The measured bulk density of the foamed ceramic material is 0.30g / cm 3 , its compressive strength is 21.15MPa, water absorp...

Embodiment 2

[0032] Raw material preparation: wash, dry and grind corn stalks to prepare corn stalk powder; grind steel slag with a jaw crusher and a planetary ball mill, and pass through a 120-mesh sieve to obtain powder;

[0033] Mixing: Weigh steel slag, magnesium slag and pyrite slag according to the mass ratio of 49:11:40, mix them evenly with 25 parts of corn flour, 6 parts of silicon carbide and 3 parts of sodium sulfate, add 12% polyvinyl alcohol ( 5wt%) solution, ground and granulated, and crossed a 120-mesh sieve to obtain a billet;

[0034] Forming: Molding the blank under 12MPa to obtain the green body;

[0035] Firing: After drying the green body, put it into a sagger filled with alumina powder, place the sagger in a high-temperature furnace, raise the temperature to 1600°C and keep it for 150 minutes to obtain light-weight and high-strength foamed ceramics.

[0036] Performance test: The measured bulk density of the foamed ceramic material is 0.68g / cm 3 , its compressive st...

Embodiment 3

[0038] Raw material preparation: wash, dry, and grind cotton stalks to prepare cotton stalk powder; grind steel slag with a jaw crusher and a planetary ball mill, and pass through a 120-mesh sieve to obtain powder;

[0039] Mixing: Weigh steel slag, pyrite slag, and silicomanganese slag according to the mass ratio of 24:41:35, and weigh 10 parts of cotton stalk powder and 3 parts of anhydrite, and add 32% of water to grind to form a slurry;

[0040] Forming: inject the slurry into the plaster model, dehydrate and form, and then dry the green body below 150°C.

[0041] Firing: After drying the green body, put it into a sagger filled with alumina powder, put the sagger in a high-temperature furnace, raise the temperature to 1300°C and keep it warm for 60 minutes to obtain light-weight and high-strength foamed ceramics.

[0042] Performance test: The measured bulk density of the foamed ceramic material is 0.49g / cm 3 , its compressive strength is 11.87MPa, water absorption rate is ...

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Abstract

The invention discloses a method for preparing light high-strength foaming ceramics. The method comprises the following steps: the foaming ceramics are composed of a main material, a pore-forming agent and a high-temperature foaming agent; by mass parts, the main material is composed of 24-49 parts of steel slag and 51-76 parts of waste residue rich in ferro magnesium; every 100 parts of main material is combined with 10-25 parts of pore-forming agent and 3-9 parts of high-temperature foaming agent; the raw materials are evenly mixed and shaped, and a green body is obtained; and the green body is sintered in a high-temperature furnace and cooled to room temperature, so that the light high-strength foaming ceramics are obtained.

Description

technical field [0001] The invention belongs to the technical field of inorganic material preparation and also belongs to the technical field of solid waste utilization. The invention relates to a preparation method of lightweight and high-strength foamed ceramics. Background technique [0002] Industrial waste such as steel slag is solid waste produced in the process of industrial production. Its large accumulation will occupy land and cause air and water environmental pollution and other hazards. Therefore, its resource utilization is an important issue. Due to the limitation of low activity and low utilization rate of industrial waste slag such as steel slag, only a few factories can use steel slag as slag cement, etc., and the current methods cannot realize large-scale utilization of industrial waste slag. my country is a country with a large production of heavy industries and a large energy consumption country, and the discharge of industrial waste residues such as ste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/138C04B38/10C04B38/06
CPCC04B33/1305C04B33/138C04B38/10C04B2235/3267C04B2235/3826C04B2235/448C04B2235/77C04B2235/96C04B38/0675C04B33/13Y02P40/60
Inventor 郭伟刘甜甜侯浩龙蒋金海韩朋德程俊华焦宝祥
Owner YANCHENG INST OF TECH
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