Horizontal carbonization furnaces are generally suitable for processing a variety of raw materials, especially wood and plant fiber biomass. The following are some types of raw materials suitable for processing:

1. Wood: Horizontal carbonization furnace is mainly used for carbonization of wood, including hardwood and softwood. Hardwoods are generally denser, and carbonized charcoal is usually stronger. Softwoods may produce lighter charcoal.

2. Plant straw: Straw is the remaining part of crops, such as rice straw, wheat straw, etc., which can also be processed by a horizontal carbonization furnace to convert it into charcoal.

3. Nut shell: Nut shell, such as coconut shell, walnut shell, etc., is also a common biomass raw material and can be converted into charcoal through a carbonization furnace.

4. Waste wooden materials: In addition to whole wood, the horizontal carbonization furnace can also process discarded wooden furniture, building materials, etc.

5. Bamboo: Bamboo is also a plant fiber suitable for carbonization. Bamboo charcoal can be produced through a horizontal carbonization furnace.

6. Agricultural waste: Some agricultural waste, such as corn cobs, peanut shells, etc., can also be used as raw materials for horizontal carbonization furnaces.

Generally speaking, horizontal carbonization furnaces are suitable for processing a variety of wood and plant fiber raw materials, and therefore have a wide range of applications in charcoal production, energy production, and waste treatment. Choosing the right raw materials and proper processing can affect the quality and usefulness of the final charcoal.