How To Make Charcoal From Walnut Shells?

Looking to produce charcoal at a low cost? Pay attention to the agricultural waste-walnut shells, once considered a low-value byproduct, are now a high-quality raw material for charcoal production.

This article will explain why walnut shells can be converted into charcoal, their advantages and applications, how to produce charcoal using carbon rod furnaces, and whether this business is profitable.

Why can walnut shells be used to make charcoal?

Walnut shells are naturally suitable for carbonization due to their physical and chemical properties.

1. Walnut shells have a high fixed carbon content and a low volatile impurity content, enabling them to form stable charcoal during high-temperature pyrolysis.
2. Walnut shells have a low ash content, which helps improve combustion efficiency and reduce residue after combustion.
3. From an environmental perspective, walnut shells are a renewable and widely available agricultural byproduct, making them an ideal biomass raw material for sustainable charcoal production.

Advantages of walnut shell charcoal

Compared to ordinary charcoal, walnut shell charcoal has the following advantages:

• High calorific value and long burning time
• Low smoke and odor, suitable for clean energy utilization
• High mechanical strength and not easily broken
• Uniform carbon structure, easy to further activate

These properties make walnut shell charcoal particularly suitable for advanced processing, such as the production of activated carbon.

How to make charcoal from walnut shells – carbon rod furnace using

A carbonization furnace is a highly efficient and stable method for converting walnut shells into high-quality charcoal, with low investment costs and high returns.

The specific production process is as follows:

• Step 1: Clean and dry the walnut shells to ensure a stable carbonization process.
• Step 2: Load the walnut shells into the furnace, then the heating rods provide uniform and controllable heat.
• Step 3: Under oxygen-limited conditions at approximately 400–600°C, the walnut shells undergo pyrolysis, gradually converting into charcoal.
• Step 4: After carbonization, the charcoal cools naturally or through a cooling system to prevent oxidation.

Depending on the end use, the charcoal can be crushed, sieved, or activated. It can be made into carbon powder (Charcoal Grinder Machine) or later shaped into dense charcoal (Charcoal Briquette Machine).

Is charcoal production from walnut shells profitable?

Charcoal production from walnut shells is considered a high-profit biomass industry, especially when using a carbon rod furnace, which can help you produce high-quality carbon products.

The raw material costs are low (usually agricultural waste), resulting in significant profit margins. Furthermore, there is strong market demand for biochar and activated carbon, and charcoal production from walnut shells aligns with global environmental management policies.

Shuliy’s charcoal briquette furnaces have low energy consumption and stable operation. The heat generated during production can be recycled, significantly reducing the need for external calorific value supply.

Therefore, such an investment offers greater and more stable profits than traditional charcoal production. If you want to know more about the latest carbon rod furnace information and pricing, please click the link: Horizontal Carbonization Furnace or contact us directly.