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Attapulgite clay porous ceramsite, and preparation method and purpose thereof

A technology for attapulgite clay and attapulgite powder, which is applied in ceramic products, other household appliances, chemical instruments and methods, etc., can solve the problems of being unsuitable for microbial reproduction, difficult to support microorganisms in film, and small particle porosity, etc. Low price, high strength and low calcination temperature

Active Publication Date: 2013-06-12
HEFEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the particles prepared in this technical scheme do not add pore-forming agents, and the prepared particles have small porosity and irregular particles. During the operation of the biofilter, the water flow resistance is large, which may easily cause the blockage of the biofilter

Method used

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  • Attapulgite clay porous ceramsite, and preparation method and purpose thereof
  • Attapulgite clay porous ceramsite, and preparation method and purpose thereof
  • Attapulgite clay porous ceramsite, and preparation method and purpose thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] In this embodiment, the raw materials of attapulgite clay porous ceramsite are constituted by mass percentage: attapulgite clay 75%, straw 20%, industrial water glass 5%;

[0032] Attapulgite clay porous ceramsite in this embodiment is prepared according to the following steps:

[0033] a, drying and pulverizing the attapulgite clay ore and passing through a 200-mesh sieve to obtain attapulgite powder;

[0034] B, the straw is crushed through a 200-mesh sieve, mixed with industrial water glass and the attapulgite powder obtained in step a to obtain a mixed powder;

[0035] c. Add water to the mixed powder and stir evenly, the amount of water added is 30% of the mass of the mixed powder, granulate and shape, control the particle size at 5-6mm, then dry naturally, and then calcined in the air at 700°C for 2 hours to obtain attapulgite clay porous ceramsite.

[0036] The attapulgite clay porous ceramsite prepared in this example is used as the carrier of microorganisms i...

Embodiment 2

[0041] The raw material of attapulgite clay porous ceramsite in the present embodiment is constituted by mass percentage: attapulgite clay 80%, leaf 10%, industrial water glass 10%;

[0042] Attapulgite clay porous ceramsite in this embodiment is prepared according to the following steps:

[0043] a, drying and pulverizing the attapulgite clay ore and passing through a 200-mesh sieve to obtain attapulgite powder;

[0044] B, the leaves are pulverized through a 200 mesh sieve, mixed with industrial water glass and the attapulgite powder obtained in step a to obtain a mixed powder;

[0045] c. Add water to the mixed powder and stir evenly. The amount of water added is 40% of the mass of the mixed powder. Granulate and shape, control the particle size at 5-7mm, then dry naturally, and then calcined in the air at 500°C for 2 hours to obtain attapulgite clay porous ceramsite.

[0046] The attapulgite clay porous ceramsite prepared in this example is used as a catalyst carrier:

...

Embodiment 3

[0052] The raw material of attapulgite clay porous ceramsite in the present embodiment is constituted by mass percentage: attapulgite clay 85%, sawdust 10%, industrial water glass 5%;

[0053] Attapulgite clay porous ceramsite in this embodiment is prepared according to the following steps:

[0054] a, drying and pulverizing the attapulgite clay ore and passing through a 200-mesh sieve to obtain attapulgite powder;

[0055] B, the sawdust is pulverized through a 200 mesh sieve, mixed with industrial water glass and the attapulgite powder obtained in step a to obtain a mixed powder;

[0056] c. Add water to the mixed powder and stir evenly, the amount of water added is 50% of the mass of the mixed powder, granulate and shape, control the particle size at 5-7mm, then dry naturally, and then calcined in the air at 550°C for 1 hours to obtain attapulgite clay porous ceramsite.

[0057] The attapulgite clay porous ceramsite prepared in this example is used as a catalyst carrier: ...

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Abstract

The invention discloses an attapulgite clay porous porous ceramsite, a preparation method of the ceramsite, and a purpose of the ceramsite. The ceramsite is prepared from raw materials of attapulgite clay and biomass, and a binder of industrial soluble glass. The ceramsite is prepared through calcining and oxidizing. The attapulgite clay porous ceramsite prepared by the present invention has advantages of high porosity, large specific surface area, high strength, strong water resistance, high water absorption, high catalytic activity, and the like. The porous ceramsite prepared by the presentinvention can be applied as a carrier for a catalyst, and a filling material for an aerated biological filter.

Description

1. Technical field [0001] The invention relates to the recovery and reuse of agricultural by-product waste, in particular to attapulgite clay porous ceramsite and its preparation method and application. 2. Background technology [0002] As a large agricultural country, my country is rich in biomass resources, mainly rice, wheat, rape straw, and agricultural and sideline products, and a small amount of corn straw and other crop straw. Most of the traditional treatment methods are incineration in the field. This treatment method not only seriously pollutes the air, but also kills the microorganisms in the land, hardens the land, and increases the amount of chemical fertilizers. In recent years, the country has also issued a policy of banning the burning of straw and agricultural waste, but in some areas there is still the phenomenon of burning straw and agricultural waste. The smoke and dust in the air before and after the autumn harvest in our country is the best proof. The...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B38/00C04B38/06C02F3/30B01J32/00
Inventor 彭书传鲍腾陈天虎王进岳正波舒林
Owner HEFEI UNIV OF TECH
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