This is the heart of the process. Here the granulated or uniform sized charcoal is feed in to the kiln in a controlled feed rate. Steam is passed inside the Kiln to accelerate the activation process. Temperature of 850-950 degree is maintained in the Kiln depending upon the activation level required. CTC adsorption of 40-120% can be tuned during the process.The plant and machinery related to this process is shown below.