Preparation method of diatomite ceramic particles or ceramic plates

A technology of diatomite and ceramsite, which is applied to the technological field of preparing ceramic plates or ceramsite from biological rocks, can solve the problems of pollution, high energy consumption, poor water resistance, etc., and achieves cheap and easy-to-obtain raw materials, simple production process, and adsorption performance. excellent effect

Inactive Publication Date: 2011-06-15
JILIN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The existing diatomite molding technology is mainly divided into two categories. One is molding at room temperature through various binders. The products obtained in this way have poor water resistance and low strength. If organic binders are used, they will cause pollution. , the degradation of the organic binder will lead to a reduction in the service life of the product
Another type of molding method is high-temperature firing, the temperature is generally around 1200 ° C, high temperature will destroy the porous diatom frustule structure, lose the original characteristics of diatomite, and consume more energy.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] The preparation method of diatomite ceramsite or diatomite ceramic plate comprises the following sequence and steps:

[0026] a. Grind diatomite to less than 100 mesh, add 0-5wt% silicate glass powder, borax or sodium carbonate, 1-12wt% coal gangue, kaolinite, zeolite, bentonite or silicon in parts by mass Limestone powder, and 0.5-10wt% rice husk powder or straw powder, mixed and ground evenly;

[0027] b. To prepare diatomite ceramsite, add 15-40wt% water to the uniformly mixed powder according to the mass fraction, mix and vibrate to shape, and dry at 70-90°C for 2-5 hours;

[0028] c. Sinter the formed and dried diatomite ceramsite in the air atmosphere, first sinter to 200-350°C, keep warm for 0.5-1 hour, then sinter to 600-900°C, keep warm for 1-4 hours, and then cool with the furnace To normal temperature, it is diatomite ceramsite;

[0029] d. To prepare diatomite pottery plates, dry-press the uniformly mixed powder on a pressure molding machine with a pressur...

Embodiment 1

[0034] a. Take 1000g of diatomite, crush it to less than 100 mesh, add 50g of silicate glass powder, 20g of zeolite powder and 100g of rice husk powder in parts by mass, mix and grind evenly;

[0035] b. Add 400ml of water to the uniformly mixed powder in parts by mass, mix and vibrate to shape, and dry at 90°C for 2 hours;

[0036]c. Sinter the formed and dried diatomite ceramsite in air atmosphere, first sinter to 350°C, keep it warm for 1 hour, then burn it to 900°C, keep it warm for 4 hours, and then cool it to room temperature with the furnace, it is diatomite Ceramsite;

[0037] f, the preparation of photochemically active diatomite ceramsite is to immerse the molded and dried diatomite ceramsite in a 2wt% slurry made of anatase titanium dioxide nano-powder for 2 hours and then dry at 90°C for 4 hours. Burn it to 500°C and keep it warm for 4 hours to form diatomite ceramsite with photochemical activity.

Embodiment 2

[0039] a. Take 1000g of diatomite, crush it to less than 100 mesh, add 40g of borax, 100g of bentonite powder and 80g of straw powder in parts by mass, mix and grind evenly;

[0040] b. Add 250ml of the uniformly mixed powder in parts by mass, mix and vibrate to shape, and dry at 80°C for 2 hours;

[0041] c. Sinter the formed and dried diatomite ceramsite in air atmosphere, first sinter to 300°C, keep it warm for 40 minutes, then burn it to 800°C, keep it for 4 hours and then cool it to room temperature with the furnace, that is, diatomite pottery grain;

[0042] f. Preparation of photochemically active diatomite ceramsite is to immerse the molded and dried diatomite ceramsite in a 1wt% slurry made of metatitanic acid powder for 2 hours, then dry at 70°C for more than 4 hours, and sinter to 400 ℃, heat preservation for 2 hours, that is, diatomite ceramsite with photochemical activity.

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PUM

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Abstract

The invention relates to a preparation method of diatomite ceramic particles or diatomite ceramic plates. The preparation method of the diatomite ceramic particles comprises the following steps: grinding diatomite, adding cosolvent, mineral powder and vegetable fiber powder to mix evenly and grind; and adding water to mix, shaking to obtain diatomite ceramic particles, and roasting to obtain the finished diatomite ceramic particles. The preparation method of the ceramic plates comprises the following steps: using evenly mixed powder to perform dry pressing with a pressure forming machine, or using mud with the water content of 15-25wt% to perform extrusion forming; and roasting to obtain the diatomite ceramic plates. The formed and dried diatomite ceramic plates or diatomite ceramic particles are soaked in slurry prepared from anatase titanium dioxide nanometer powder or metatitanic acid powder and then dried and roasted to obtain diatomite ceramic particles or diatomite ceramic plates with photochemical activity. In the invention, the low temperature sintering method is adopted to prepare the diatomite diatomite ceramic plates and ceramic particles which have high diatomite content and good adsorption property and water resistance and can be combined with various functional components on the surface. The diatomite ceramic products in the invention are convenient to use and have simple production technology and cheap and easy available raw materials.

Description

Technical field: [0001] The invention relates to the application of biological rocks in building materials, in particular to the process of preparing ceramic plates or ceramsites with biological rocks. Background technique: [0002] In China, the production of pottery skills can be traced back to the era from 4500 BC to 2500 BC. A large number of pottery and pottery fragments have been unearthed from numerous Neolithic sites in the Yellow River Basin and the Yangtze River Basin. Many of them are not only daily necessities, but have obvious artistic tendencies and become pottery works of art. Tang Sancai is a kind of exquisite pottery in Tang Dynasty. We saw the galloping horses, camels, terracotta warriors, warriors, ladies, and animals and birds of various shapes unearthed from the Terracotta Warriors and Horses. The most common pottery is those utensils closely related to life, such as plates, three-legged plates, washers, bowls, pots, jars, bottles, statues, bowls, pill...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/13
Inventor 蒋引珊罗罡李芳菲付家庆胡浩薛兵刘大锐赵哲
Owner JILIN UNIV
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