BIOCHAR KILNS INTERNATIONAL (PTY) LTD is proud to reveal our latest biochar retort - the BKI REC BIOCHAR RETORT.
Site preparation consists of laying down bricks as a foundation on which the kiln rests, making space for air inlets and the single rocket stove. The inner panels and lid are made from a durable chrome-based metal called 3CR12 to withstand high heat without warping. The panels are all the same size with laser-cut hole-positions corresponding with adjacent panels, to allow them to be bolted together. Kaowool insulation is loosely placed inside the panels, door and the two loose fitting lids. The sealing furrow is lowered down onto the panels that are now fully assembled. Stainless steel cladding is attached on to the outside of the panels and over the sealing furrow. The fibre plaster mix is applied over the inside of the panels, post-assembly, containing a mesh screen, up to the desired thickness and allowed to dry. Special instructions will be given on how to seal the door. The two kiln lids have handles and one person on each side of the kiln can lift it off by hand. 55 gal open top drums are fitted with ‘full curl lids’ to seal off the feedstock inside the drums and are rolled into the kiln manually through the side door. Entire kiln can be dissembled for translocation.
Firewood consisting of low quality material such as timber offcuts or used pallets is packed around the drums and once lit, creates the heat into the drum retorts. Air into the kiln is regulated with the rocket stove and other air openings created into the bricks below it. The retort lids need to be punched with holes to allow gases to escape and for the process to become exothermic. Complete pyrolysis occurs within a few hours but allow 24 hours or longer for contents to cool. Lids can be removed to accelerate the cooling process. Once the 55 gal drums have cooled off sufficiently open the side door and remove them / load the next batch. It will not be necessary to use water to quench the char, simply rotate the drums through 180° and place the drums with the lids and holes facing down to seal off air.
Payments & Returns
- Payment Methods
- Bank Transfer