Sawdust Dryer for sale

Sawdust Dryer For Sale

Sawdust dryer is one type of rotary dryer that is specially for drying sawdust, wood chips, straw and charcoal, etc. It has high drying intensity, short drying time, large production capacity, high efficiency, small occupied area, easy operation and maintenance, etc. It is also as sawdust drying machine or sawdust rotary dryer. Mainly, there are two types of sawdust dryer machine:airflow sawdust dryer and three-channel dryer. The latter applys in the sawdust drying process.

What is Sawdust?

Sawdust consists of the fine particles of wood left over from sawing, grinding, or sanding wood. It is a a byproduct of many industrial processes. The character of sawdust can vary greatly. It can be wet or dry, coarse or fine, and made from different wood species. These variations are very important when it comes to drying it effectively.

What is Sawdust Used For?

Dry sawdust is an incredibly versatile raw material. While its most well-known use is for making wood pellets for fuel, it has many other valuable applications:

• Biomass Fuel: Compressed into pellets or briquettes for industrial boilers and home heating.
• Wood Plastic Composites (WPC): Used as a filler in composite decking and other building materials.
• Animal Bedding: Highly absorbent and clean.
• Particleboard and MDF: A primary component in engineered wood products.
• Absorbent Material: Used for cleaning up spills.

Why Should We Dry the Sawdust?

You must dry sawdust to make it useful and valuable. Raw, wet sawdust has very limited use. It is heavy, difficult to handle, and will rot quickly. Drying the sawdust unlocks its potential and provides several key benefits:

• Increases Energy Value: Removing water dramatically increases the calorific (heat) value of the sawdust, making it an efficient fuel.
• Enables Pelletizing: You cannot make stable, high-quality wood pellets from wet sawdust. The material must have a consistent moisture content, typically 10-15%.
• Reduces Transportation Costs: Water is heavy. Removing it significantly lowers the cost of shipping the material.
• Prevents Spoilage: Dry sawdust can be stored for long periods without molding or decomposing.

The enemy is “case hardening,” not just moisture. You can have sawdust that tests “dry” on average but is a disaster. This happens when you use excessively high temperatures. The outside of each wood particle flash-dries, forming a hard shell that traps moisture inside. When this particle enters a high-pressure pellet die, the trapped steam can flash and cause the pellet to crack or explode. A slower, lower-temperature drying process, which a professional biomass dryer provides, produces a consistently dry particle that is far safer and more effective.

Applications of Sawdust Rotary Dryer

Sawdust refers to as the dust, chips, shavings and other materials left when processing wood. Dried sawdust applys widely as fuel, filler, etc. As a result, sawdust dryer machine has many different applications as follows:

Fuel processing: dried sawdust when briquetted is the key raw material in the fuel industry, like in heating supply system, power plant and so on;

Furniture industry: sawdust rotary dryer applys to dry the wet sawdust to a certain humidity, which is for the shaving board making, plywood making, etc. 

Paper Making Industry: dried sawdust can be the raw material when make paper, therefore, this sawdust drying machine plays an initial part;

Edible fungus cultivation: the raw material sawdust can be to cultivate mushrooms, fungus mushrooms, needle mushroom and agaric mushroom.

Structure and Benefits of the Sawdust Dryer

Sawdust Dryer has key components: a heating furnace, inlet, rotating cylinder, filtering cylinder, conveying pipe, cooling tube and the outlet.

Small occupied area, easy construction and maintenance, low drying cost. The material is highly dispersed in the airflow dryer; the particle surface is the effective drying area;

Strong drying strength, short drying time, high processing capacity, high thermal efficiency, non-binding water heat efficiency is up to 60%;

Wide scope of applications. The operating parameters can be changed according to the requirements of different customers;

Long service life. The cylinder rolls stably, thus, wearing is reduced.

Working Principle of Sawdust Dryer

1. The sawdust is fully dried in the rotating cylinder;

2. Sawdust is fully dispersed again before entering into the material conveying pipe, so that the evaporation will be faster;

3. The material is boiling in the tube, the hot air and material will fully contact with each other to complete the drying process.

How to Improve the Efficiency of Zoneding Sawdust Dryer Machine

Faced with numerous changes and threats, Zoneding keeps on the research of how to increase the efficiency of the sawdust dryer and finds some tips.

1>> Replace the spiral conveying blades at the feeding end with 6mm steel triangular stiffened plates. It is to lower the sawdust speed in the high-temperature zone and to make a maximum utilization of the heat. 

2>> Build central X-shaped lifting blades to prolong the residence time of the material and improve the heat transformation;

3>> Change the angle of the feeding tube. With the standard of not to influence the feeding efficiency, lift the blanking cylinder as much as possible. The top of the lifted tube shall not touch the material retaining ring. The part of the tube inside the cylinder shall be not too long and the material falls within the 200mm of the retaining ring. Thus, a material screen is formed and heat transformation is enhanced.

General Specification