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Preparation of iron tailing based light heat-preservation foamed ceramic material

A technology of foaming ceramics and iron tailings, which is applied in the field of building materials, can solve problems such as occupation, pollution of the environment, and large land, and achieve the effects of reducing use, protecting the ecological environment, and reducing costs

Inactive Publication Date: 2017-04-26
UNIV OF JINAN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If not utilized, these tailings not only occupy a large amount of land but also pollute the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The above-mentioned iron tailings-based lightweight thermal insulation foaming ceramic material is prepared from the following components in parts by weight: 40wt% of Yantai iron tailings, 10wt% of porcelain stone, 20wt% of feldspar, 20wt% of clay, 5wt% of sandstone, Peat 5wt%, plus MnO 2 1.5wt%, plus 0.3wt% SiC, plus 0.8wt% grinding aid. The raw materials are ball milled (300 mesh), dried and molded, and then fired at 1185°C for 15 minutes. The obtained porous foamed ceramics are closed cells with a pore diameter of 1.5 mm and a bulk density of 0.246 t / m 3 , The room temperature flexural strength is 1.03MPa, the compressive strength is 0.96MPa, and the thermal insulation coefficient is 0.052W / (m·K) under the temperature difference of 35°C and 15°C on the hot plate.

Embodiment 2

[0031] The above-mentioned iron tailings-based lightweight thermal insulation foaming ceramic material is prepared from the following components in parts by weight: Yantai iron tailings 40wt%, porcelain stone 10wt%, feldspar 20wt%, clay 20wt%, sandstone 5 wt %, peat 5 wt %, plus MnO 2 1.5wt%, plus 0.3wt% SiC, plus 0.8wt% grinding aid. The raw materials are ball milled (300 mesh), dried and molded, and then fired at 1190°C for 10 minutes. The obtained porous foamed ceramics are closed cells with a pore diameter of 1.6 mm and a bulk density of 0.232 t / m 3 , The room temperature flexural strength is 0.97MPa, the compressive strength is 0.89MPa, and the thermal insulation coefficient is 0.058W / (m·K) under the temperature difference of 35°C and 15°C on the hot plate.

Embodiment 3

[0033] The above-mentioned iron tailings-based lightweight thermal insulation foaming ceramic material is prepared from the following components in parts by weight: 40 wt % of Yantai iron tailings, 10 wt % of porcelain stone, 20 wt % of feldspar, 20 wt % of clay, Sandstone 5 wt %, peat 5 wt %, plus MnO 2 1.5 wt %, plus 0.5 wt % SiC, plus 0.8 wt % grinding aid. The raw materials are ball milled (300 mesh), dried and shaped, and then fired at 1185°C for 10 minutes. The obtained porous foamed ceramics are closed cells with a pore diameter of 1.8 mm and a bulk density of 0.230 t / m 3 , The room temperature flexural strength is 0.98MPa, the compressive strength is 0.92MPa, and the thermal insulation coefficient is 0.056W / (m·K) under the temperature difference of 35°C and 15°C on the hot plate.

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Abstract

The invention discloses preparation of an iron tailing based light heat-preservation foamed ceramic material. The iron tailing based light heat-preservation foamed ceramic material is prepared from the following components in parts by weight: 30-70wt% of iron tailings, 10-15wt% of chinastone, 5-20wt% of feldspar, 5-20wt% of clay, 5-10wt% of a foaming agent, 0.5-2.3wt% of an additive foaming agent and 0.5-1wt% of an additive grinding aid. The iron tailing based light heat-preservation foamed ceramic material disclosed by the invention has relatively low heat conduction coefficients and relatively good mechanical properties, the raw material cost can be lowered, the economic benefits of companies can be increased, and comprehensive utilization of resources can be achieved.

Description

technical field [0001] The invention belongs to the field of building materials, and in particular relates to the preparation of an iron tailings-based lightweight thermal insulation foaming ceramic material. Background technique [0002] In my country, the currently commonly used building insulation materials are mainly organic insulation materials, most of which are polystyrene foams. This type of material has the advantages of light weight, good processability, high Low grade is easy to catch fire and has certain toxicity. Therefore, the study of A1 grade non-combustible fireproof and thermal insulation materials that do not catch fire has been greatly developed throughout the country. [0003] Foam ceramics developed on foam glass are mainly composed of ceramic crystal phases, so they have high strength and good fire resistance and flame retardancy, and their service temperature exceeds 1000 ° C, which is much higher than that of foam glass. The raw materials used to pr...

Claims

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Application Information

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IPC IPC(8): C04B38/02C04B33/132
CPCC04B33/132C04B38/02C04B2235/3267C04B2235/3826C04B2235/77C04B2235/96C04B2235/9607C04B38/0051C04B38/0061Y02P40/60
Inventor 孙杰璟刘永杰孙璇
Owner UNIV OF JINAN
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