Composite ceramsite prepared from bentonite, perlite and zeolite serving as main raw materials and preparation method of composite ceramsite

A technology of expanded perlite as the main raw material, applied in chemical instruments and methods, ceramic products, silicon compounds, etc., can solve the problems of high energy consumption and low capacity, achieve long life, large adsorption capacity, and realize the effect of recycling

Inactive Publication Date: 2011-11-23
XINYANG NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The object of the present invention is to provide a kind of ceramsite and ceramsite using natural non-metallic minerals perlite, bentonite and zeolite as main raw materials in order to overcome the problems of high energy consumption, low capacity and regeneration difficulties in pollution control in the above-mentioned prior art. Its preparation method has the advantages of simple operation, high porosity and low cost

Method used

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  • Composite ceramsite prepared from bentonite, perlite and zeolite serving as main raw materials and preparation method of composite ceramsite
  • Composite ceramsite prepared from bentonite, perlite and zeolite serving as main raw materials and preparation method of composite ceramsite

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Effect test

Embodiment 1

[0036] The main raw materials are expanded perlite, sodium bentonite and natural zeolite, and clay and polyethylene glycol are used as auxiliary materials. Weigh respectively: 500g of expanded perlite (60-80 mesh), 200g of sodium bentonite, 150g of acidified zeolite, 50g of clay, and 50g of polyethylene glycol.

[0037] The bentonite, zeolite and clay were crushed to 200 mesh respectively.

[0038] The above-mentioned main and auxiliary materials were fully mixed in a mixing agitator for 60 minutes.

[0039] Put the mixed material into the rotary disc granulator to granulate, and the particle size is controlled at 10~150mm.

[0040] The pellets are sintered in the air atmosphere of a high temperature furnace. First raise the temperature to 200°C, dehydrate and dry under this condition for 60 minutes; continue to raise the temperature to 600~800°C, and keep it warm for 120 minutes.

[0041]The sintered material is naturally cooled to 25°C, and crushed into spherical or cylin...

Embodiment 2

[0043] The main raw materials are expanded perlite, sodium bentonite and natural zeolite, and clay and gelatin are used as auxiliary materials. Weigh respectively: expanded perlite (60-80 mesh) 300g, sodium bentonite 200g, acidified zeolite 250g, clay 50g, gelatin 50g.

[0044] The bentonite, zeolite and clay were crushed to 200 mesh respectively.

[0045] The above-mentioned main and auxiliary materials were fully mixed in a mixing agitator for 50 minutes.

[0046] Put the mixed material into the rotary disc granulator to granulate, and the particle size is controlled at 10~150mm.

[0047] The pellets are sintered in the air atmosphere of a high temperature furnace. First raise the temperature to 250°C, dehydrate and dry under this condition for 50 minutes; continue to raise the temperature to 650~900°C, and keep it warm for 120 minutes.

[0048] The sintered material is naturally cooled to 25°C, and crushed into spherical or cylindrical particles with a particle size of 5...

Embodiment 3

[0050] Sodium bentonite, expanded perlite and natural zeolite are used as main raw materials, and clay and polyacrylamide are used as auxiliary materials. Weigh respectively: 250g of sodium bentonite, 350g of expanded perlite (40-60 mesh), 200g of acidified zeolite, 60g of clay, and 50g of polyacrylamide.

[0051] The bentonite, zeolite and clay were crushed to 200 mesh respectively.

[0052] The above-mentioned main and auxiliary materials were fully mixed in a mixing agitator for 60 minutes.

[0053] Put the mixed material into the rotary disc granulator to granulate, and the particle size is controlled at 10~150mm.

[0054] The pellets are sintered in the air atmosphere of a high temperature furnace. First raise the temperature to 300°C, dehydrate and dry under this condition for 40 minutes; continue to raise the temperature to 600~700°C, and keep it warm for 120 minutes.

[0055] The sintered material is naturally cooled to 25°C, and crushed into spherical or cylindrica...

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Abstract

The invention discloses composite ceramsite prepared from bentonite, perlite and zeolite serving as main raw materials. The raw materials are molded, roasted at a high temperature, and scattered to form spherical or columnar porous ceramsite. The composite ceramsite has the obvious advantages that: 1, an environment-friendly product with high economic value and long service life is prepared from natural nonmetallic minerals and clay which have adsorption property and are used as raw materials, so that the aim of treating waste by using the natural minerals is fulfilled; 2, microporous ceramsite with a good structure is prepared by firing abundant natural minerals, namely the bentonite and the zeolite which have an interlayer structure and a natural pore channel structure and are used as raw materials, and micropores formed in the firing process are communicated with the natural pore channel structure and the interlayer structure, so that the prepared ceramsite has a good pore channel and high adsorption capacity; and 3, after the ceramsite is used for a certain period of time, the adsorption capacity is in a saturated state, adsorption capability is reduced, and the ceramsite can be dried and regenerated at a high temperature, so that a pollution treatment material is recycled, and secondary pollutants are not generated.

Description

technical field [0001] The invention belongs to the technical field of wastewater treatment, and in particular relates to a porous ceramsite sintered at high temperature with perlite, bentonite and natural zeolite as main raw materials and a preparation method thereof. Background technique [0002] At present, there are many methods for industrial wastewater and urban domestic sewage treatment, which can generally be divided into physical and chemical methods, chemical methods and biological methods. For example, the combination of coagulation and biological aeration is used to treat urban domestic sewage; the combination of coagulation and chemical oxidation is used to treat industrial printing and dyeing wastewater; the combination of coagulation, biological aeration and adsorption is used to deeply treat coking wastewater; Technical treatment of high ammonia nitrogen organic wastewater, etc., the above sewage treatment technology has been widely used in various industries...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/16B01J20/30C04B38/00
Inventor 井强山方林霞
Owner XINYANG NORMAL UNIVERSITY
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