Machine-made charcoal is produced by pressing straw, sawdust, wood blocks, rice hulls, peanut shells and other raw materials with briquette machine, and then carbonizing the pressed biomass briquettes with carbonizing furnace. The quality of charcoal is usually judged by its carbon content, heat content and burning time. Besides, the ash content of charcoal is also an important index to judge the quality of charcoal. If the ash content of charcoal is too large, the quality of charcoal is poor, and the price of this kind of charcoal is generally low in the market.

The ash content of charcoal is too high for the following reasons:

1. The ash content of raw materials is too high. Such as straw, rice husk, weeds, etc. 2. Raw materials are mixed with impurities such as sand and soil.

3. If the carbonization temperature is too high, the carbonization time is too long and the carbonization temperature is too high, the ash content will also increase.

Methods of reducing ash content:

Charcoal made from raw materials with high ash content, such as straw, rice hulls and weeds, is not suitable for roasting or heating, but can be used in industry， however, if you can add some sawdust to these raw materials, the ash content will be less;

For the problem of unclean raw materials, control the storage conditions during storage to avoid impurities， check it again before production to ensure the cleanliness of the materials;

Finally, choose a good quality carbonizing furnace and control the carbonization time and temperature.

KMEC has a first-class design and R&D team, capable of providing independent biomass machines and complete sets of equipment. Our biomass briquette equipment and carbonizer equipment have good quality and high production efficiency, and they sell well at home and abroad. If you need any biomass equipment, please contact us.