Rice husk, coconut shell, wood, peanut shell, bamboo and etc. No matter which way you choose to make charcoal briquettes, the material moisture is better less than 20% for carbonizing. The drier the better.
The airflow carbonization furnace can be used for charring most of the big-size materials such as coconut shells, wood branches, sawdust briquettes, bamboo, etc.
For small size materials, like rice husk, palm shell, wood chips, etc, the continuous carbonization furnace is more suitable.
Hammer grinder is good for crushing charcoal to powder. A cyclone will reduce the dust a lot.
Usually, we recommend customers use corn starch, cassava starch as binders. They are natural, non-toxic, and low cost.
The moisture of charcoal should be around 20% after mixing. There is a simple method to judge if the moisture of mixed charcoal powder reaches the standard. Grasp the charcoal powder, squeeze it by hand, if the charcoal powder can form together and no water squeeze out, the charcoal water content is ok.