The
Ring of Fire Biochar Kiln is a metal container designed to efficiently convert waste wood and brush into biochar, a valuable soil amendment. Biochar is a highly porous form of charcoal that improves soil health by increasing water retention, improving nutrient availability, and providing a habitat for beneficial microorganisms. It also offers a sustainable way to sequester carbon, helping to mitigate climate change.
The kiln operates on the principle of counter-flow combustion, where all the air for the burn comes from the top.
This method protects the char underneath from air exposure, preventing it from turning to ash and preserving the valuable product.
How the Biochar Kiln Works:
The kiln's design, including a heat shield, helps hold in heat for better char conversion efficiency. The heat shield also pre-heats the combustion air, which flows through the gap between the shield and the kiln body. This process leads to more efficient and cleaner combustion, burning the smoke before it can escape. When operated correctly with dry, properly sized feedstock, the kiln produces very little visible smoke.
Key Features
Durable Construction: The kiln consists of an inner ring of six sheets of mild steel bolted together, and an outer ring of lighter gauge steel that functions as a heat shield.
Portable and Easy to Assemble: The kiln weighs 330 pounds when fully assembled, with each kiln body section weighing 37 pounds. It is designed to be assembled and disassembled for each use, making it easy to move the kiln and quench the biochar. Assembly can be completed in as little as 15 minutes with one to two workers.
Minimal Maintenance: The kiln will rust and discolor with use, but this will not affect its function. Storing it in a covered, protected area will help to preserve its longevity.
