Biomass briquetting machine is a kind of equipment that presses biomass raw materials such as crop straw, sawdust and sawdust into lump fuel, which is widely used in the field of biomass energy. The moisture content of raw materials is an important factor affecting the production efficiency and product quality of briquetting machine. If the moisture content of raw materials is too high or too low, it will directly affect the forming effect of briquetting. So, how to judge whether the moisture content of raw materials is appropriate? The following are some practical methods and experiences.

1. Ideal moisture range

Generally speaking, the requirement of biomass briquetting machine for raw material moisture is usually between 10% and 15%. The moisture in this range can not only ensure that the raw materials have certain cohesiveness, but also prevent the equipment from being blocked or the products from being loose due to excessive moisture. If the moisture content is too low, the raw materials may become dry and loose, making it difficult to form; However, if the moisture content is too high, it will easily lead to the accumulation of materials inside the briquetting machine or the decline of the quality of finished products.

2. Feel judgment

A simple method is to judge the moisture content of raw materials by hand feeling. Take a handful of raw materials and hold them tightly by hand. If you feel a little moist, but there is no obvious water drop oozing out, it means that the water is roughly appropriate. If the raw material falls loosely after being clenched, it means that the moisture may be low; If there are obvious water droplets oozing out, it means that the water content is too high.

3. Auxiliary drying equipment

For some raw materials with high water content, drying equipment can be used for pretreatment. By adjusting the drying time and temperature, the moisture content of raw materials is controlled within the ideal range. In addition, the raw materials can be monitored in real time by the moisture detector in the production process to ensure that the moisture meets the requirements.

4. Small batch pressure test

Before large-scale production, small batch pressure test can be carried out, and whether the moisture is suitable can be judged by observing the compactness and strength of the finished product. If the finished product has a smooth surface, high density and is not easy to crack, it means that the water content is properly controlled; If the finished product is loose or cracked, it is necessary to adjust the moisture of raw materials.

5. Seasonal adjustment

The water content of raw materials will be different in different seasons. For example, the water content of raw materials is usually high in rainy season and relatively low in dry season. Therefore, it is necessary to properly treat raw materials according to seasonal changes in actual production to ensure the normal operation of the briquetting machine.

In a word, it is the key to ensure the efficiency of equipment and the quality of finished products to control the moisture of raw materials of biomass briquetting machine reasonably. Through hand feeling judgment, small batch pressure test and necessary drying treatment, the moisture content of raw materials can be effectively ensured in the ideal range, thus improving production efficiency and economic benefits.