Sawdust Log Press Machine For Sale - A Full FAQ Guide

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1. The Emergence of the Sawdust Briquette Machine

As the global energy crisis intensifies, there is an increasing shift towards renewable energy sources. Wood waste, as a renewable biomass energy source, has gained popularity due to its high calorific value, cleanliness, and environmental benefits. However, pure sawdust is not an efficient fuel option due to its large volume, making it difficult to use in many combustion engines. This is where compressed wood logs and briquettes come into play, effectively addressing these challenges. Currently, there are two types of sawdust log presses available on the market, designed for different production capacities: small and large.

2. Uses and Benefits of Sawdust Logs

Sawdust logs and briquettes primarily serve as fuel for heating and cooking. Their calorific value is approximately 4,500 kcal, depending on the raw materials used. Sawdust, a by-product of wood processing, often occupies significant storage space and poses safety risks. When compressed into briquettes, however, it becomes more profitable, easier to store, transport, and burn—without releasing toxic substances, making it an excellent way to utilize biomass waste.

3. Raw Materials for Sawdust Logs

Although referred to as sawdust logs, various raw materials can be utilized besides sawdust. Common raw materials include wood powder, wood chips, bark, branches, rice husks, peanut shells, straw, cotton straw, bamboo powder, bagasse, and coconut shells. Other biomass and agricultural materials can also be used.

Sawdust holds the highest quality among these materials due to its high calorific value, stability, and low ash content once briquetted. Other raw materials typically require additional crushing or drying processes, leading to lower profitability compared to wood sawdust.

4. Types of Sawdust Log Presses

The sawdust log maker machine produces briquettes from wood sawdust, forming cylindrical or hexagonal logs with a density of 1-1.3g/cm³. The logs can either be solid or hollow, typically measuring between 30 cm and 50 cm in length.

Sawdust fire log press machines come in two varieties: small and large. Small machines generally produce below 400 kg/hour and are screw press briquetting machines requiring manual feeding and semi-automatic operation, often used for charcoal briquette production. They can only produce hollow briquettes but allow for customization of shape, making them suitable for small businesses. In contrast, large piston press briquetting machines offer outputs beyond 1 ton/hour and feature automatic feeding and fully automated controls, capable of continuous operation round the clock. They cater to large-scale projects, producing both hollow and solid sawdust logs with varying diameters from 20mm to 110mm.

5. Small Sawdust Log Press Overview

The small sawdust log press has a capacity ranging from 150 kg to 300 kg per hour and operates as a screw-type briquetting machine. Besides sawdust, it can process other biomass waste as well. The biomass briquettes can be burned directly or carbonized into charcoal, with minimal differences between machine-made and raw charcoal.

A. Fire Log Extrusion Process

Under high temperature and pressure, the raw material is pushed into the forming sleeve, aided by a heating ring that raises the sleeve temperature to about 350°C. To achieve high-density, smooth-surfaced briquettes without cracks, it is essential to select the appropriate molding temperature based on the raw materials and their moisture content. Typically, materials should have a moisture content of 6%-12% for optimal molding, according to machine tests and experience. The molding temperature for wood chips, sawdust, shavings, and bamboo powder generally ranges from 260°C to 320°C.

B. Benefits of the Screw Briquette Machine

1. Simple structure, easy operation, and low maintenance costs.
2. Compact size, saving space, labor, and power, with low initial investment required.
3. Equipped with an automatic electric heating ring that adjusts moisture content based on materials, ensuring stable operation and enhancing work efficiency.
4. The propeller and forming cylinder are constructed with wear-resistant materials for continuous operation, durability, and extended service life.
5. Four-bearing design enhances machine stability.
6. Oil-immersed lubrication replaces traditional oil application, prolonging machine lifespan.
7. Increased pitch improves material feeding and output.
8. Innovative forming cylinder design reduces friction and increases briquette density.

C. Best Wear Parts

The primary wear components in the small sawdust briquette press are the propeller and the forming cylinder, both of which directly impact the service life based on their design and material quality. High-quality propellers lead to quicker discharge speeds and improved wear resistance.

D. Process Flow of the Small Sawdust Briquette Production Line

The screw-type sawdust log press has strict requirements regarding raw material size and moisture. Optimal raw materials should generally be within 3 mm in size and have moisture content not exceeding 12%. Thus, most materials need drying and crushing.

Crushing

Raw materials with varying shapes and sizes are processed through a hammer mill, reducing them to particles no larger than 3-5 mm, with material expulsion done by air.

Drying

Materials with excess moisture content or inconsistent moisture levels are dried using an airflow-type dryer until a moisture range of 6%-12% is achieved. This type of dryer pairs well with the screw-type briquette machine and is cost-effective for small-scale sawdust log pressing.

Briquetting

Once crushed and dried, the raw materials are subjected to high temperature and pressure, forming hollow briquettes. The commonly preferred size for briquettes is 50 mm in diameter and 40-50 cm in length.

Carbonization

For those seeking to explore new markets, adding a carbonization furnace to the end of the plant allows for converting biomass briquettes into charcoal briquettes. The briquettes are stacked within the furnace, air inlets are sealed, ignition occurs, and oxygen levels are controlled during combustion. Water is used to extinguish the fire once carbonization is complete, while the resultant smoke is purified through a condenser, yielding wood tar, wood vinegar, and water.

6. Large Scale Sawdust Log Press Overview

The mechanical stamping type is the most utilized large-scale sawdust log press. It is versatile, producing biomass briquettes ranging from 20 mm to 110 mm in diameter, with custom lengths tailored to customer specifications. Depending on market demand, logs can be produced in both random and predetermined lengths.

Industrial sawdust briquette presses boast low energy consumption and high output, offering several models to meet specific plant requirements.

Turning Sawdust Into Logs: Mechanical Punching

The mechanical stamping type briquetting machine operates on the crank connecting rod principle, utilizing two flying wheels to drive punches, resulting in high pressure for effective material compression. This machine is particularly effective for pressing hard-to-form materials.

Mechanical Briquette Machine Advantages

Large-scale wood log briquetting machines are designed for high stability, essential for industrial production projects. The stamping briquette machine features a cooling and automatic control system, ensuring reliable operations with low energy consumption and increased output. Its easy maintenance makes it a prime option for large-scale endeavors.

A piston press briquetting machine comprises few wear components, with only the mold parts needing routine replacements. Our patented split mold design allows for the cost-effective replacement of only the consumable section, ultimately minimizing maintenance time and costs. All parts are specifically heated and hardened, custom tailored to the hardness of your particular raw materials, optimizing mold lifespan and reducing briquetting production expenses.

1. High output with low energy consumption
2. Fully automated control reduces labor costs
3. Immersion lubrication allows for 24-hour continuous production
4. Split mold design minimizes maintenance costs

Piston-Type Sawdust Log Press Wear Parts

The piston press briquetting machine incorporates minimal wear components, essential for maintaining efficiency. Regular replacement of mold parts is all that's required, further enhancing maintenance efficiency.

High-quality wear components incorporate heating and hardening techniques, extending the mold lifespan while concurrently reducing briquette production expenses.

Working Video of Large Sawdust Briquetting Machine

The appropriate diameter for sawdust logs can be determined based on requirements. The most commonly used diameter ranges between 40 mm and 80 mm. Based on our experience, it is advisable to avoid selecting overly large or small diameters unless local market demands dictate otherwise.

Process Flow of Large-Scale Sawdust Log Production Line

The ram-type sawdust log briquetting machine exhibits broad adaptability to raw materials, requiring sizes not exceeding 20 mm for direct briquetting and allowing for moisture content up to 20%. When dimensions or moisture surpass these limits, materials must be pulverized and dried. Typically, industrial-grade heavy-duty wood crushers and rotary drum dryers are needed to ensure consistent material supply, with moisture levels being the only consideration for wood sawdust.

7. Comparing Two Types of Briquetting Presses

The design, working mechanics, and output capacities of the two sawdust log presses differ, allowing for tailored selection based on raw materials and project specifications. Below, we've provided a comparative overview. For more information, feel free to contact us.

Machine Type	Capacity	Briquette Size	Raw Material	Application
Screw Type	200-300 kg/set	50 mm-60 mm	Biomass Waste	Small Scale Project
Piston Type	- kg/set	20 mm-110 mm	Biomass and Industrial Waste	Medium and Large Scale Project

8. Selecting the Ideal Machine for Your Needs

Utilizing the table above, users can efficiently determine which sawdust log maker suits their needs. Here are a few suggested guidelines:

• If you're starting with a small factory, opt for a screw briquette machine due to its lower investment costs.
• For developing regions with abundant raw materials and adequate budget, consider a piston press briquetting machine to capture market share.

9. Our Commitment to You

With years of experience in biomass briquette equipment production, we maintain independent design and development capabilities. Providing service is critical during machine transactions, and our dedication runs from pre-sales consultation to post-sales installation and commissioning—ensuring customers receive comprehensive and professional assistance.

Pre-sales Support

Our experienced technical team is ready to address your questions and offer tailored solutions. We provide test machine services based on your raw materials to minimize investment risks.

In-sales Support

From placing your order to delivery, we keep close tabs on order processes, providing production progress updates, so you can track all equipment manufacturing stages.

After-sales Support

Due to the heavy machinery involved, after-sales installation and commissioning are crucial. Our skilled after-sales team maintains continuous communication, ensuring swift installation and training on equipment use.

Reach Out to Us Now!

KX boasts extensive experience in turnkey projects, confident in overdelivering on your expectations.

We are eager to share our wealth of experience and provide tailored solutions for sawdust log presses and production lines based on your raw materials.