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Attapulgite and biomass compound biological ceramsite and preparation method thereof

A technology of attapulgite and biological ceramsite, which is applied in the direction of clay products, ceramic products, chemical instruments and methods, etc., and can solve the problems of unsuitable promotion and application of biomass ceramsite, low utilization rate of rice husk, and high production cost. Achieve the effect of being conducive to bio-filming, increasing the microbial biomass of particle-filming, and reducing production costs

Inactive Publication Date: 2016-09-07
HOHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The utilization rate of these methods to rice husk is too low, and it is difficult to popularize
[0003] Patent document CN 102225870 A discloses attapulgite clay porous ceramsite and its preparation method and application, which uses attapulgite as the main raw material, and adds components such as biomass and binder to obtain it through a granulation and calcination process. The method mainly has the following deficiencies: (1) the required binder water glass itself is an industrial raw material, which is expensive and added in a large amount, which not only consumes resources, but also greatly increases the production cost, and its environmental protection effect is also greatly reduced. It is not suitable for the promotion and application of biomass ceramsite; (2) The sintering temperature is high, which greatly increases the energy cost, and it is not suitable for the promotion and application of biomass ceramsite

Method used

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  • Attapulgite and biomass compound biological ceramsite and preparation method thereof
  • Attapulgite and biomass compound biological ceramsite and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] (1) Preparation of raw materials:

[0037] a. The attapulgite is pulverized by a pulverizer, passed through a 200-mesh sieve, and dried in an oven for more than 2 hours to obtain attapulgite powder.

[0038] b. After passing the rice husk powder through an 80-mesh sieve, put it in an oven to dry for more than 2 hours to obtain the rice husk powder.

[0039] c. After passing the fly ash through a 200-mesh sieve, put it in an oven to dry for more than 2 hours to obtain fly ash.

[0040] (2) stirring:

[0041] The powder is mixed according to the mass percentage of attapulgite: rice husk powder: fly ash = 3:0:2, and stirred by a mixer for more than 1 hour to stir evenly.

[0042] (3) Add water to granulate:

[0043] Add deionized water to the mixed powder and stir evenly. The amount of water added is 25% of the mass of the mixed powder to make spherical particles of 3-5mm, and then placed in an oven and dried at 105°C for more than 2 hours.

[0044] (4) Calcination:

...

Embodiment 2

[0047] (1) Preparation of raw materials:

[0048] a. The attapulgite is pulverized by a pulverizer, passed through a 200-mesh sieve, and dried in an oven for more than 2 hours to obtain attapulgite powder.

[0049] b. After passing the sawdust powder through an 80-mesh sieve, put it in an oven to dry for more than 2 hours to obtain the sawdust powder.

[0050] c. After passing the fly ash through a 200-mesh sieve, put it in an oven to dry for more than 2 hours to obtain fly ash.

[0051] (2) stirring:

[0052] The powder is mixed according to the mass percentage of attapulgite: sawdust powder: fly ash = 7:1:2, and stirred by a mixer for more than 1 hour to stir evenly.

[0053] (3) Add water to granulate:

[0054] Add 1% sodium bicarbonate solution to the mixed powder and stir evenly, add water 25% of the mixed powder mass to make 3-5mm spherical particles, then place them in an oven and dry at 105°C More than 2 hours.

[0055] (4) Calcination:

[0056]The dried ceramsit...

Embodiment 3

[0058] (1) Preparation of raw materials:

[0059] a. Attapulgite is pulverized through a pulverizer, and after passing through a 200 mesh sieve, put it in an oven to dry for more than 2 hours to obtain attapulgite powder.

[0060] b. Pass the chestnut shell powder through an 80-mesh sieve, and put it in an oven to dry for more than 2 hours to obtain the chestnut shell powder.

[0061] c. After passing the fly ash through a 200-mesh sieve, put it in an oven to dry for more than 2 hours to obtain fly ash.

[0062] (2) stirring:

[0063] The powder is mixed according to the mass percentage of attapulgite: chestnut shell powder: fly ash = 18:7:5, and stirred by a mixer for more than 1 hour to stir evenly.

[0064] (3) Add water to granulate:

[0065] Add 1% by mass sodium bicarbonate solution to the mixed powder and stir evenly, add 25% of the mass of the mixed powder to make 3-5mm spherical particles, then place them in an oven and dry at 105°C More than 2 hours.

[0066] (4...

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Abstract

The invention discloses an attapulgite and biomass compound biological ceramsite. The biological ceramsite contains solid powder and a liquid adhesive, wherein the solid powder contains the following components in percentage by mass: 50-90% of attapulgite powder, 5-30% of a biomass material, and 10-40% of an accessory, wherein the accessory is first-level fly ash, the liquid adhesive is a sodium bicarbonate solution or an ammonium chloride solution, the amount of the used liquid adhesive accounts for 15-35% of the mass of all the solid powder, and the concentration range of the liquid adhesive is not more than 2%. The attapulgite and biomass compound biological ceramsite prepared according to the invention uses the fly ash and the sodium bicarbonate solution to replace conventional adhesive, plasticizer and fluxing agent, so that the raw material cost is saved, the strength and porosity of the ceramsite are improved, and the ceramsite has the advantages of high porosity, large specific surface area, high strength, strong water resistance and the like. The ceramsite disclosed by the invention can be used as a filler for an adsorbing material, a biological filter and a denitrification filter.

Description

technical field [0001] The invention relates to a method for preparing ceramsite. In particular, it relates to a method for preparing ceramsite by reclaiming and reusing solid waste to make ceramsite. Background technique [0002] In recent years, the world's energy resources have become increasingly scarce, and the utilization of biomass materials has received more and more attention. my country is a large agricultural country, and rice production in my country accounts for about 1 / 2 of the country's total grain production. It is rich in biomass materials. The traditional biomass treatment method is to transport and incinerate the biomass in processing plants. This treatment method will cause damage to the atmospheric environment. Serious pollution will inevitably be eliminated under the current situation of deteriorating ecological environment. The country's policy of banning the burning of agricultural waste is the best proof. The way to properly handle biomass such as r...

Claims

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Application Information

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IPC IPC(8): C04B38/06C04B33/132C04B33/135C04B35/63C02F3/28
CPCC02F3/2806C04B33/132C04B33/1352C04B35/6303C04B38/009C04B38/0675C04B2235/442C04B2235/96C04B38/0074Y02P40/60
Inventor 操家顺商凯航虞筠霄王成费罗兰郑尔雅喻纬华
Owner HOHAI UNIV
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