How to use charcoal extruder to produce coconut shell biochar briquette


Charcoal extruders have become an essential tool in the production of biochar briquettes, offering an efficient and sustainable way to create high-quality fuel from organic waste materials. Among these materials, coconut shells stand out due to their abundance and excellent combustion properties. This guide will walk you through the process of using a charcoal extruder to convert coconut shells into biochar briquettes, ensuring you understand each step for successful production.

coconut charcoal briquette plant

coconut charcoal briquette plant

Understanding the Basics

What is a Charcoal Extruder?

A charcoal extruder is a machine designed to compress powdered or granular charcoal into solid briquettes. The process involves the application of pressure and sometimes heat, which binds the materials together without the need for additional binders. The resulting briquettes are consistent in shape, size, and density, making them ideal for use as a fuel source.

Why Use Coconut Shells?

Coconut shells are a byproduct of the coconut industry and are typically discarded as waste. However, they are rich in lignin and cellulose, which make them excellent candidates for biochar production. When converted into biochar, coconut shells produce briquettes with high calorific value, low ash content, and minimal smoke output.

Preparing the Raw Material

Collecting and Cleaning Coconut Shells

The first step is to gather and clean the coconut shells. Remove any remaining coconut meat and fiber to ensure a pure starting material. The cleaner the raw material, the higher the quality of the final briquettes.

Drying the Coconut Shells

Drying is a crucial step as it reduces the moisture content of the shells, making them easier to crush and convert into biochar. Spread the cleaned shells in a single layer under the sun or use a drying machine to speed up the process. Aim for a moisture content of less than 15%.

Converting Coconut Shells to Charcoal

Carbonization Process

Carbonization involves heating the coconut shells in the absence of oxygen to convert them into charcoal. This can be done using a traditional charcoal kiln or a more advanced carbonization furnace. The process should be carefully monitored to maintain the right temperature, usually between 400-600°C, to ensure complete carbonization without burning the material.

Crushing and Grinding

Once the shells have been carbonized, they need to be crushed and ground into a fine powder. This can be done using a hammer mill or a crusher. The finer the powder, the better the quality of the briquettes, as it allows for more uniform compression and binding.

Operating the Charcoal Extruder

Feeding the Material

With the charcoal powder ready, it’s time to feed it into the charcoal extruder. Most extruders have a hopper where you can pour the powder. Ensure the machine is set to the appropriate settings for coconut shell charcoal, which may vary depending on the model.

Adjusting the Machine

Adjust the pressure and temperature settings on the extruder according to the manufacturer’s guidelines. For coconut shell charcoal, a moderate pressure and temperature are usually sufficient. Too much pressure can cause the briquettes to crack, while too little will result in weak, crumbly briquettes.

Extrusion Process

Start the machine and allow it to extrude the charcoal powder into briquette form. The extruder will compress the powder into a cylindrical or custom-shaped briquette, depending on the machine’s mold. Collect the briquettes as they come out and place them on a drying rack.

Post-Production Steps

Drying the Briquettes

Freshly extruded briquettes will still contain some moisture and need to be dried before use. Lay them out in a well-ventilated area or use a drying oven to remove any remaining moisture. Proper drying ensures the briquettes burn efficiently and with minimal smoke.

Packaging and Storage

Once dried, the briquettes are ready for packaging. Store them in airtight bags or containers to prevent moisture absorption. Proper packaging extends the shelf life of the briquettes and ensures they remain ready for use.


Producing coconut shell biochar briquettes using a charcoal extruder is a sustainable and efficient way to create high-quality fuel. By following the steps outlined in this guide, you can turn waste coconut shells into valuable briquettes, contributing to a greener environment and providing a reliable source of energy. Remember, the key to successful briquette production lies in the careful preparation of raw materials, precise operation of the extruder, and proper post-production handling. Visiting:

What Commercial Charcoal Kiln Is the Best

Determining the “best” commercial charcoal kiln largely depends on the specific needs and goals of your operation, including the scale of production, the type of feedstock you’re using, the desired quality of charcoal, your budget, and your location’s environmental regulations. There are several types of commercial charcoal kilns available on the market, each with its own advantages and disadvantages. Here, we will discuss some popular types and the considerations you should keep in mind when choosing a carbonization kiln.

Biomass to biochar production

Biomass to biochar production

Batch Charcoal Kilns

Traditional Earth Mound Kilns

These are the simplest type of charcoal kilns, consisting of a pile of wood covered with earth or metal sheets.
They are low-cost but also less efficient, with more significant smoke emissions and potential environmental impact.

Brick Kilns

Similar to earth mound kilns but constructed of bricks, offering slightly better control over the pyrolysis process.
They are more durable than earth mounds but can still be less efficient than more modern designs.

Retort Kilns

These kilns heat the wood in a sealed chamber, or “retort,” which allows for the recovery and reuse of the gases produced during carbonization, improving efficiency and reducing pollution.
Retort kilns is more costly than traditional earth mound kilns and brick kilns, but they are more environmentally friendly and can produce a consistent charcoal quality. It usually contains horizontal carbonization kiln and hoisting charcoal furnace.

Small scale hoisting and horizontal carbonizers for charcoal making

Small scale hoisting and horizontal carbonizers for charcoal making

Continuous Charcoal Kilns

Rotary Kilns

These are cylindrical kilns that rotate to ensure even heating and carbonization of the wood.
They tend to be high-capacity and can handle various feedstock types but may require a significant initial investment. Click here to learn more.

Considerations for Choosing a Commercial Charcoal Kiln

Production Scale

Determine the quantity of charcoal you need to produce to meet your demand. Large charcoal making operations may benefit from continuous rotary kilns, while smaller ones might opt for batch kilns.

Feedstock Type

Different kilns handle various wood types and sizes more efficiently. Ensure the kiln you choose can accommodate the feedstock available to you.

Quality of Charcoal

Higher-quality charcoal can often be produced in retort or rotary kilns, which provide better control over the carbonization process.


More sophisticated kiln designs, such as retort and rotary kilns, require a higher initial investment but may offer savings in the long run due to their efficiency and lower biochar production operating costs.

Environmental Regulations

Compliance with environmental regulations is crucial. Kilns with higher efficiency and better emission controls, like retort kilns, may be necessary in regions with strict environmental laws.

Ease of Operation and Maintenance

Some kilns require more technical know-how to operate and maintain. Consider the skills and manpower you have available when choosing a kiln.
It’s important to conduct thorough research and perhaps consult with industry experts or manufacturers to find the kiln that best fits your needs. You might also look for reviews or case studies of different kiln models being used in similar operations to yours. Here, you can visit for reference.

Ultimately, there is no one-size-fits-all answer to the best commercial charcoal kiln, but by carefully considering the factors above, you can make an informed decision that aligns with your business objectives and operational capabilities.