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Active alumina/active carbon composite material and preparation method thereof

A technology of activated alumina and composite materials, applied in the field of activated alumina/activated carbon composite materials and its preparation, can solve the problems of high recycling and regeneration costs, restricting the development of activated carbon, and short service life, etc. and social significance, low-cost effect

Inactive Publication Date: 2012-01-18
FUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with the continuous improvement of people's demand and quality requirements for activated carbon, activated carbon also shows many shortcomings, such as low strength, most of the products are powdery, granular, short service life, high cost of recycling and regeneration, etc., which seriously restricts the use of activated carbon. development and become the focus of the industry

Method used

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  • Active alumina/active carbon composite material and preparation method thereof

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preparation example Construction

[0021] The concrete steps of the preparation method of this activated alumina / activated carbon composite material are as follows:

[0022] (8) Mixing: Weigh the industrial sludge and activated carbon from the aluminum profile factory according to the ratio of raw materials, put them into the mixer and mix them evenly;

[0023] (9) Granulation: Put the mixed material in step (1) into the granulator, spray the binder solution with a mass fraction of 10-50%, and mix evenly to obtain granules;

[0024] (10) Stale: seal the pellets in step (2) and put them in a cool place for 24-36 hours;

[0025] (11) Forming: pressing the stale pellets into flakes, columns or balls;

[0026] (12) Drying: the formed sample is dried at room temperature;

[0027] (13) Sintering: Embed the dried samples in the protective atmosphere sand, put them into the kiln, and sinter in the reducing protective gas CO: raise the temperature to 400-750°C at a rate of 100-400°C / h, hold time 2~6h;

[0028] (14) ...

Embodiment 1

[0032] The activated alumina / activated carbon composite material is prepared by using industrial sludge powder from aluminum profile factory and commercially available coconut shell activated carbon as raw materials. Shell activated charcoal 350g (25%) with HNO 3 For the binder:

[0033] Preparation steps:

[0034] Pretreatment of industrial sludge raw materials in aluminum profile factories: mill the sludge through a 100-mesh sieve, wash with distilled water for 3 to 5 times, filter, dry at 140°C, and grind through a 100-mesh sieve for use.

[0035] (1) Mixing: Weigh the treated industrial sludge from the aluminum profile factory and coconut shell activated carbon powder according to the proportion, put them into the mixer, and mix for 1 hour.

[0036] (2) Granulation: Put the mixed powder into a granulator, and gradually spray 13wt% dilute HNO 3 350 grams of the solution were granulated.

[0037] (3) Stale: Seal the granulated powder in a plastic bag and store it in a co...

Embodiment 2

[0045] Activated alumina / activated carbon composite material is prepared by using industrial sludge from aluminum profile factory and commercially available coconut shell activated carbon as raw materials. Powder 150g (15%) with 13wt% HNO 3 For the binder:

[0046] Preparation steps:

[0047] (1) Mixing: Weigh the industrial sludge from the aluminum profile factory and coconut shell activated carbon powder according to the proportion, put them into the mixer, and mix for 1 hour.

[0048] (2) Granulation: Put the mixed powder into a granulator, and gradually spray 13wt% dilute HNO 3 320 grams of the solution were granulated.

[0049] (3) Stale: Seal the granulated powder in a plastic bag and store it in a cool place for 24 hours.

[0050] (4) Molding: make spherical particles of 3-10 mm.

[0051] (5) Drying: Put the formed granules in the room to dry.

[0052] (6) Sintering: bury the dried particles in the pre-prepared atmosphere protection sand (graphite:river sand ratio...

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Abstract

The invention discloses an active alumina / active carbon composite material and a preparation method thereof. The composite material comprises the following ingredients: 70-90 weight portions of sludge, 10-30 weight portions of active carbon, and 15-35 weight portions of binder, and is prepared by uniformly mixing, pelleting, aging, molding, drying in the air, sintering, rinsing and drying. Using sludge as raw material has an important meaning to environmental protection and recycling of waste. The invention has the advantages of simple preparation method, easy obtainment of raw material, and low cost, and can be widely applied in the fields of industry, agriculture, environmental protection, air cleaning, water treatment and the like.

Description

technical field [0001] The invention belongs to the field of novel functional materials and composite materials, in particular to an activated alumina / activated carbon composite material and a preparation method thereof. Background technique [0002] As a carbonaceous material with well-developed pores, activated carbon has been widely used in separation, refining, catalyst, reagent recovery and other fields, especially in pollution control. However, with the continuous improvement of people's demand and quality requirements for activated carbon, activated carbon also shows many shortcomings, such as low strength, most of the products are powdery, granular, short service life, high cost of recycling and regeneration, etc., which seriously restricts the use of activated carbon. development and become the focus of the industry. [0003] With the development of the chemical industry, many new requirements have been put forward for the catalyst carrier alumina in the process of...

Claims

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Application Information

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IPC IPC(8): B01J20/20B01J20/30B01J32/00C02F1/28B01D53/02
Inventor 林春莺吴任平叶先锋
Owner FUZHOU UNIV
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