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A kind of lightweight porous ceramic material and its preparation method and application

A porous ceramic, lightweight technology, applied in the field of ceramic materials, can solve the problem of separating the curing agent that cannot load heavy metals, and achieve the effect of being beneficial to recycling, saving energy, and reducing pollution

Active Publication Date: 2021-06-15
四川省有色冶金研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the above-mentioned deficiencies in the prior art, the present invention provides a lightweight porous ceramic material and its preparation method and application, which can effectively solve the problem that the current soil in-situ solidification and stabilization technology cannot separate the solidifying agent loaded with heavy metals from the soil The problem

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A lightweight porous ceramic material comprising the following components by weight: 60 parts of fly ash, 10 parts of kaolin, 5 parts of quartz, 5 parts of illite, 5 parts of pyrophyllite, 5 parts of lead-free glass powder, and 5 parts of mica 5 parts of bentonite, 3 parts of sodium carbonate, 1 part of boric acid and 10 parts of urea.

[0024] The preparation method of the above-mentioned lightweight porous ceramic material comprises the following steps:

[0025] (1) Mixing and crushing: Mix fly ash, kaolin, quartz, illite, pyrophyllite, lead-free glass powder, mica and bentonite evenly, and then grind until all pass through 200 mesh;

[0026] (2) Preparation of ceramic material body: urea, sodium carbonate, and boric acid are dissolved in water to form a mixed solution, and the mixed solution is added to the result of step (1), mixed evenly, and then made into a certain amount by mechanical molding. Green body of particle size;

[0027] (3) Drying: place the ceramic...

Embodiment 2

[0031] A lightweight porous ceramic material, comprising the following components by weight: 80 parts of fly ash, 5 parts of kaolin, 10 parts of quartz, 10 parts of illite, 10 parts of pyrophyllite, 10 parts of lead-free glass powder, 5 parts of mica 5 parts of bentonite, 2 parts of sodium carbonate, 1 part of sodium borate and 5 parts of urea.

[0032] The preparation method of the above-mentioned lightweight porous ceramic material comprises the following steps:

[0033] (1) Mixing and crushing: Mix fly ash, kaolin, quartz, illite, pyrophyllite, lead-free glass powder, mica and bentonite evenly, and then grind until all pass through 200 mesh;

[0034] (2) Preparation of ceramic material green body: urea, sodium carbonate, and sodium borate are dissolved in water to form a mixed solution, and the mixed solution is added to the result of step (1), mixed evenly, and then made by mechanical molding A green body with a certain particle size;

[0035] (3) Drying: place the ceram...

Embodiment 3

[0039] A lightweight porous ceramic material comprising the following components by weight: 65 parts of fly ash, 12 parts of kaolin, 7 parts of quartz, 7 parts of illite, 7 parts of pyrophyllite, 10 parts of lead-free glass powder, and 7 parts of mica 7 parts of bentonite, 4.5 parts of sodium carbonate, 1.5 parts of boric acid and 13 parts of urea.

[0040] The preparation method of the above-mentioned lightweight porous ceramic material comprises the following steps:

[0041] (1) Mixing and crushing: Mix fly ash, kaolin, quartz, illite, pyrophyllite, lead-free glass powder, mica and bentonite evenly, and then grind until all pass through 200 mesh;

[0042] (2) Preparation of ceramic material body: urea, sodium carbonate, and boric acid are dissolved in water to form a mixed solution, and the mixed solution is added to the result of step (1), mixed evenly, and then made into a certain amount by mechanical molding. Green body of particle size;

[0043] (3) Drying: place the c...

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Abstract

The invention discloses a lightweight porous ceramic material and its preparation method and application. The porous ceramic material comprises the following components in parts by weight: 60-80 parts of fly ash, 5-20 parts of kaolin, 5-10 parts of quartz, Illite 5‑10 parts, pyrophyllite 5‑10 parts, lead-free glass powder 5‑20 parts, mica 5‑10 parts, bentonite 5‑10 parts, sodium carbonate 1‑5 parts, boric acid or borate 1‑ 5 parts and urea 5‑20 parts. The preparation method includes mixing materials, crushing, preparing ceramic material body, drying and sintering. The lightweight porous ceramic material provided by the invention has the advantages of high porosity, low sintering temperature, low cost, no waste gas pollution, low ceramic material density and large specific surface area. The invention fundamentally solves the problem that the current soil in-situ solidification and stabilization technology cannot separate the solidifying agent loaded with heavy metals from the soil.

Description

technical field [0001] The invention belongs to the technical field of ceramic materials, and in particular relates to a lightweight porous ceramic material and its preparation method and application. Background technique [0002] Heavy metal pollution has a great impact on people's quality of life and health, seriously damages public health, endangers environmental safety, and affects social stability. Heavy metal-polluted soil has characteristics such as long-term, cumulative, latent and irreversible characteristics, which are harmful, difficult to control, and high in cost. In particular, the risk of ecotoxicity induced by heavy metals has attracted more and more attention, especially in relation to food production. Soil heavy metal pollution has received widespread attention. The current soil heavy metal treatment technologies mainly involve plant methods, chemical leaching methods, electrochemical methods, microbial leaching methods, in-situ solidification methods, in-...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B35/622C04B38/06B09C1/00C09K17/04C09K101/00
CPCB09C1/00B09C2101/00C04B35/622C04B35/62204C04B38/0645C04B2235/3201C04B2235/3409C04B2235/3418C04B2235/3472C04B2235/3481C04B2235/349C04B2235/36C04B2235/606C04B2235/656C04B2235/6567C04B2235/77C09K17/04C09K2101/00
Inventor 殷志刚卢勇房瑞晓常丽娟陈思竹伍建军
Owner 四川省有色冶金研究院有限公司
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