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Active carbon cement composite material and preparation method thereof

A cement composite material and activated carbon technology, applied in the field of activated carbon cement composite material and its preparation, can solve the problems of high cost of recycling and regeneration, restricting the development of activated carbon, short service life, etc. Effect

Inactive Publication Date: 2011-01-12
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, with the continuous improvement of people's demand for activated carbon and the continuous improvement of quality requirements, activated carbon also shows many shortcomings, such as low strength, most products are powdery or granular, easy to cause dust pollution, short service life, high recycling costs, etc. Seriously restricting the development of activated carbon, becoming the focus of the industry

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Activated carbon cement composites were prepared by using commercially available 32.5R Portland cement, commercially available coconut shell activated carbon powder, and construction silica sand as raw materials. The raw material formula is as follows: coconut shell activated carbon 47%, cement 40%, silica sand 13%; add water 20%

[0020] Preparation steps:

[0021] a) Mixing: Pass the building silica sand through a 20-mesh sieve for later use. Then weigh various raw materials according to the above-mentioned proportion, put them into the mixer, and mix them evenly.

[0022] b) Adding water to granulate: add the mixed powder into tap water to continue mixing, pass through a 30-mesh sieve, and obtain a certain size of granulated powder.

[0023] c) Molding: Put the granulated powder into a steel mold, press it into a green body with a press, and let it stand for one day.

[0024] d) Curing: Put the above-mentioned preliminarily solidified body in water for 28 days.

...

Embodiment 2

[0032] Activated carbon cement composites were prepared by using commercially available 42.5R Portland cement, commercially available activated carbon powder, and construction silica sand as raw materials. The raw material formula is as follows: 25% activated carbon powder, 50% cement, 25% silica sand, and 40% water.

[0033] Preparation steps:

[0034] (a) Mixing: first pass the construction silica sand through a 20-mesh sieve for later use. Then weigh the various raw materials according to the above ratio, put them into the mixer, and mix them evenly.

[0035] (b) Adding water: Add appropriate amount of tap water to the mixed powder and continue mixing to obtain a viscous slurry.

[0036] (c) Molding: Pour the slurry into a plastic mold and place it for one day after being vibrated.

[0037] (d) Curing: Take out the green body after the initial setting from the plastic mold, and put it in water for 28 days.

[0038] (e) Drying: Dry the cured samples in an oven at 110°C. ...

Embodiment 3

[0045] Commercially available sulfate cement, commercially available coal-based activated carbon powder, and building silica sand were used as raw materials to prepare activated carbon cement composite materials. The raw material formula was as follows: activated carbon 58%, cement 17%, sand 25%, and water 25%.

[0046] Preparation steps:

[0047] (a) Mixing: Pass the construction silica sand through a 20-mesh sieve for later use. Then weigh various raw materials according to the above-mentioned proportion, put them into the mixer, and mix them evenly.

[0048] (b) Add water to granulate: Add appropriate amount of tap water to the mixed powder to continue mixing, pass through a 30-mesh sieve, and obtain a certain size of granulated powder.

[0049] (c) Forming: Put the granulated powder into a steel mold, press it into a green body with a press, and let it stand for one day.

[0050] (d) Curing: Put the above-mentioned preliminarily solidified body in water for 28 days.

[...

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PUM

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Abstract

The invention provides an active carbon cement composite material and a preparation method thereof. The material comprises the following components: 10-80 percent of active carbon, 10-70 percent of cement and 0-40 percent of silica sand. The active carbon cement composite material is prepared by the steps of mixing, moulding, maintaining, drying, and the like. The invention has the advantages of easy acquisition of raw materials, simple method, low cost, wide application and excellent performance. In the invention, a product with a fixed shape and proper strength is prepared by adopting commercial active carbon, cement and silica sand as raw materials and adopting the current method for moulding a cement product. The invention overcomes the defects of low strength, short service life, difficult recycling, and the like of active carbon, is widely suitable for various fields of decoration, fitment, catalyst, catalyst carriers, purification treatment of water and air, and the like, especially mass industrialized production and is significant for environmental protection and recycling economy and harmonious society construction.

Description

technical field [0001] The invention belongs to the field of novel functional materials and composite materials, and in particular relates to an activated carbon cement composite material and a preparation method thereof. Background technique [0002] Activated carbon is an important porous functional material with a unique pore structure and surface active functional groups, stable chemical properties, acid, alkali, heat, insoluble in water and organic solvents, widely used in liquid and gas phase adsorption, decolorization, In the fields of refining, separation and catalysis, it is of great significance in food, medicine, chemical industry, environmental protection and other aspects. However, with the continuous improvement of people's demand for activated carbon and the continuous improvement of quality requirements, activated carbon also shows many shortcomings, such as low strength, most products are powdery or granular, easy to cause dust pollution, short service life,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B28/00C04B28/04C04B28/36
CPCC04B28/02
Inventor 吴任平于岩陈燕青
Owner FUZHOU UNIV