Columnar activated carbon (also called cylindrical or pellet activated carbon) is a high-quality carbon material shaped into uniform cylindrical pellets. Compared to granular or powdered activated carbon, columnar activated carbon has:

• Higher mechanical strength
• Low pressure drop in filtration systems
• Longer service life

Columnar activated carbon is widely used in industrial gas purification, air filtration, water treatment, and chemical processing.

O Columnar Activated Carbon Making Machine is designed to process raw materials like coconut shells, coal, bamboo, and wood into high-strength columnar activated carbon. This machine integrates crushing, carbonization, activation, granulation, and cooling into an efficient production line.

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What is a Columnar Activated Carbon Making Machine?

A Columnar Activated Carbon Making Machine is industrial equipment used to convert raw materials into cylindrical activated carbon. Unlike granular or powdered carbon, the columnar shape ensures:

• Even air or water flow during filtration
• High adsorption efficiency
• Reduced dust and loss during handling

The machine is suitable for producing cylindrical activated carbon with diameters ranging from 2mm to 8mm, meeting industrial and municipal filtration requirements.

Principais características:

• Continuous operation for large-scale production
• Integrated carbonization and activation system
• High mechanical strength and uniform size pellets
• Energy-efficient and environmentally friendly

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Raw Materials for Columnar Activated Carbon Production

Common raw materials include:

• Coconut shells – hard and microporous, excellent for water purification
• Coal – bituminous and anthracite coal for granular and pellet carbon
• Bamboo – renewable and eco-friendly
• Wood – provides mesopores and high adsorption capacity

Pre-treatment involves crushing, drying, and screening to achieve uniform particle size for carbonization and pelletizing.

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Working Principle of Columnar Activated Carbon Making Machine

Step 1: Crushing and Drying

Raw materials are crushed and dried to reduce moisture content to below 10%, ensuring efficient carbonization.

Step 2: Carbonization

Crushed material is heated in a carbonization furnace under low-oxygen conditions. Volatile matter is removed, forming carbon-rich char. Rotary or fixed carbonization kilns are used depending on production scale.

Step 3: Pelletizing and Extrusion

Char is mixed with a binding agent and extruded into columnar shapes using a pellet mill or extrusion machine. The size and diameter are adjustable according to requirements.

Step 4: Activation

• Steam Activation – high-temperature steam forms a microporous structure
• Chemical Activation – KOH, ZnCl₂, or H₃PO₄ creates high surface area and strong adsorption properties

Step 5: Cooling, Screening, and Packaging

Activated carbon pellets are cooled, screened for size uniformity, and packaged for storage or shipment.

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Structure of a Columnar Activated Carbon Making Machine

A standard columnar activated carbon production line includes:

• Crusher & Grinder – reduces raw material particle size
• Drying System – removes moisture efficiently
• Forno de carbonização – performs pyrolysis at high temperature
• Pellet Extrusion Machine – shapes char into columnar form
• Forno de ativação – steam or chemical activation system
• Cooling System – prevents oxidation of activated carbon
• Screening & Packaging Unit – ensures uniform pellets and prepares for shipment
• Dust Collection System – meets environmental regulations

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Applications of Columnar Activated Carbon

1. Industrial Gas Purification

• Removal of VOCs, H₂S, and other toxic gases
• Air purification in chemical plants and factories

2. Tratamento de água

• Purificação de água potável
• Industrial wastewater treatment
• Removal of chlorine, organics, and heavy metals

3. Food and Beverage Industry

• Sugar decolorization
• Alcohol and beverage purification

4. Pharmaceutical and Medical Use

• Detoxification products
• Filtration of pharmaceutical liquids

5. Other Industrial Applications

• Precious metal recovery
• Suporte ao catalisador
• Gas adsorption in chemical processes

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Advantages of Columnar Activated Carbon Making Machine

• High Mechanical Strength – columnar shape reduces breakage
• Efficient Adsorption – well-developed pore structure
• Continuous and Large-Scale Production – suitable for industrial plants
• Energy Saving – heat recovery and optimized design reduce fuel consumption
• Environmental Compliance – advanced dust and exhaust gas treatment
• Customizable Product Size – adjustable pellet diameter and length

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How to Choose the Right Columnar Activated Carbon Making Machine

1. Production Capacity – select based on plant size and market demand
2. Raw Material – compatibility with coconut shell, coal, bamboo, or wood
3. Eficiência energética – choose machines with heat recovery and low fuel consumption
4. Nível de automação – fully automatic lines improve efficiency and reduce labor
5. Manufacturer Reputation – ensure reliable after-sales service and technical support
6. Environmental Compliance – machine must meet emission and dust regulations

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Market Outlook for Columnar Activated Carbon

• Global demand for columnar activated carbon is increasing due to stricter water and air purification standards
• Industrial applications in chemical plants, pharmaceuticals, and water treatment drive growth
• Asia-Pacific, especially China and India, is the largest producer and consumer due to raw material availability and industrial demand
• Columnar activated carbon is preferred in fixed-bed filtration systems for its durability and low pressure drop

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