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As the energy situation becomes more and more severe, people are beginning to seek renewable alternative energy sources. As a renewable biomass energy source, wood waste is widely used in the market because of its good calories, cleanliness, and environmental protection. But pure wood sawdust is not a good fuel because of the big space needed and cannot be used by all combustion machines easily. But the compressed wood logs and briquettes can perfectly solve these problems. There are two kinds of sawdust log press for sale in the market now, mainly for small and large capacity differently.
Sawdust logs and briquettes are used for home heating or cooking mainly. The logs calorific value is around 4,500 kcal, and it will vary depending on your raw materials used. Sawdust is a by-product of wood processing. It takes up a lot of storage space, and its easy to cause danger. However, after being pressed into a briquette, it can make more profits, and it is easy to store, transport, and burn. It does not produce toxic and harmful substances when burning, thats really a good way to utilize biomass waste.
Although the briquette is called sawdust logs, people not only use sawdust as feedstock. The most commonly used raw materials are wood powder, wood chips, barks, branches, rice husks, peanut shells, straws, cotton straws, bamboo powder, bagasse, and coconut shells. There are other biomass or agriculture raw materials also.
Its just that sawdust as a raw material is of the best quality because of its high calorific value, stability, and low ash content after briquetted. Other materials generally require crushing or drying, so compared to wood sawdust, its profit will be lower.
The sawdust log maker machine refers to a machine that produces briquettes from wood sawdust. The sawdust logs are cylindrical or hexagonal, with a density of 1-1.3g/cm3. It can be solid or hollow, and the length is generally between 30cm and 50 cm.
Sawdust fire log press machines include small and large according to the output. The output of a small one is generally below 400 kg/hour, and it is a screw press briquetting machine. It requires manual feeding and semi-automatic operation, which is used in charcoal briquettes production. The small sawdust log maker can only produce a hollow briquette, and the shape customization is acceptable. It is suitable for small businesses. The output of a large piston press briquetting machine is more than 1ton/h. Its a mechanical briquetting press with automatic feeding and fully automatic control. It can operate 24 hours a day without any failure rate. The piston press briquetting machines are mainly used in large-scale projects to produce hollow and solid sawdust logs, the diameter from 20mm to 110mm differently.
The small sawdust log press capacity is between 150 kg and 300 kg per hour. It is screw type briquetting machine. Except for sawdust, it can press other biomass waste also. The biomass briquettes within the inner hole could burn directly, or be carbonized into charcoal. The difference between machine-made charcoal and raw charcoal is not much.
Under the condition of high temperature and pressure, the raw material is extruded into the forming sleeve by the pusher, and there is a heating ring outside the forming sleeve, which can raise the temperature of the forming cylinder to about 350°. In order to ensure the density of the briquette is high, the surface is smooth, and there is no obvious crack. It is usually necessary to select the appropriate molding temperature according to the type of raw material and moisture content. Its level should be confirmed by an on-site machine test and experience. Generally speaking, if the propeller of the machine is not worn and the moisture content of the material is 6%-12%, the molding temperature for wood chips, sawdust, shavings, bamboo powder, and other materials is between 260°-320°
The wearing parts of the small sawdust briquette press are mainly the propeller and the forming cylinder, and its processing technology and size are closely related to the service life. High-quality propellers have fast discharge speed, wear resistance, and long service life.
The screw-type sawdust log press has strict requirements on the size and moisture of the raw materials, usually, the optimal size is within 3 mm, and the moisture does not exceed 12%. So most of the raw materials need to be crushed and dried.
The raw materials with irregular shapes and sizes are conveyed into the crusher and crushed into particles no more than 3-5 mm. It is a hammer mill usually, and the material is sent out by air.
Use an airflow-type dryer to dry the raw materials with moisture content exceeding the standard, or uneven moisture content, until the moisture content is between 6% and 12%. The airflow-type dryer is matched with the screw-type briquette machine output well. The airflow-type dryer is low cost, so it is especially suitable for small-scale sawdust log press.
The crushed and dried raw materials are extruded into hollow briquettes under high temperature and high pressure working conditions. The most commonly used briquette size is 50 mm in diameter and 40-50 cm in length.
If you want to develop a new market, you can add a carbonization furnace at the end of the plant to carbonize biomass briquettes into charcoal briquettes. The sawdust briquettes are stacked in the carbonization furnace, all air inlets are closed, and then ignite. Control the input oxygen during the combustion process, and pour water to extinguish the fire, the carbonization process is completed. The black smoke produced during the charcoal fire is cooled and purified by the condenser, and get a mixture of wood tar, wood vinegar, and water.
The most commonly used large-scale sawdust log press machine is a mechanical stamping type. It is multi-purpose and can produce biomass briquettes with a diameter of 20 mm to 110 mm. Usually, the length of the sawdust logs can be customized according to customer requirements. According to a different market request, it can be in random lengths or cut into specified lengths.
Industrial sawdust briquette press have low energy consumption and high output, and you have many models to choose from to meet your plant request.
The mechanical stamping type briquetting machine is designed based on the principle of crank connecting rod. It has two flying wheels. The wheels drive the punches to punch the materials. This kind of machine has high pressure, and it is easy to block the materials in high speed. It is the best briquette machine for pressing hard-to-form materials.
Explore more:For more Biomass Briquette Machineinformation, please contact us. We will provide professional answers.
Large-scale wood log briquetting machines are mainly used in large-scale industrial production projects, so the stability of the equipment is very high. The stamping briquette machine is equipped with a cooling system and an automatic control system, which is stable in operation, low in energy consumption, and high in output. In addition, it is easy to maintain and is the best choice for large-scale projects.
A piston press briquetting machine has only a few wearing parts. Only the mold parts need to be replaced regularly. Our patented mold is a split design, only the consumable part ( which contacts the raw material) needs doing replacement period, which saves maintenance time and costs. All our wearing parts are specially heated and hardened. That is customized according to the hardness of your material. It prolongs the service life of the mold and reduces the production cost of the briquette.
A piston press briquetting machine has only a few wearing parts. Only the mold parts need to be replaced regularly. Our patented mold is a split design, only the consumable part ( which contacts the raw material) needs doing replacement period, which saves maintenance time and costs.
All our wearing parts are specially heated and hardened. That is customized according to the hardness of your material. It prolongs the service life of the mold and reduces the production cost of the briquette.
Usually, the diameter of the sawdust log can be decided according to your needs. For sawdust, the most commonly used diameter is 40mm-80 mm. Based on our experience, we do not recommend you choose a too big or small diameter. But if your local market needs a large or small one, then workable.
The ram-type sawdust log briquetting machine has wide adaptability to raw materials. Raw materials with a size of no more than 20 mm can directly briquetting, and the requirements for moisture are relatively loose, usually no more than 20%. If the size and moisture content exceed the standard, it needs to be pulverized and dried. Generally needs to be equipped with an industrial heavy-duty wood crusher and rotary drum dryers to ensure the supply. If your raw material is wood sawdust, then consider the moisture content only.
The design, working principle, output, and other aspects of the two kinds of sawdust log presses are different. You can choose according to your raw materials and project requirements. The following is a comparison of various aspects, please help to check. Contact us if you need more information.
Machine TypeCapacityBriquette SizeRaw MaterialApplicationScrew Type200-300kg/set50mm-60mmBiomass WasteSmall Scale ProjectPiston Type-kg/set20mm-110mmBiomass and Industrial WasteMiddle and Large Scale ProjectFrom the comparison of the above table, you can quickly choose the sawdust log maker that suits you. Follows are our additional suggestions.
We are a professional manufacturer of biomass briquette equipment with many years of production experience and independent design and development capabilities. Service plays an important role in machine transactions. From pre-sales consultation to after-sales installation. Commissioning, we spend a lot of energy and time giving our customers the most considerate and professional support. We are a professional factory you can trust.
We have a strong technical team to answer your technical questions and provide a professional solution. Provide test machine service according to your material to minimize your investment risk.
From your order to delivery, we will follow the order team to provide you with the production information of the order, and you can track the production steps of the equipment throughout the process.
Because our machine is heavy equipment, after-sales installation and commissioning are extremely important. Our professional after-sales team will maintain communication with you throughout the process, lead the completion of installation and commissioning in the shortest possible time, and conduct detailed training.
We are glad to share with you our riching experience and provide professional sawdust log press or production line solutions according to your raw materials.
Spirilis,
I've done a fair amount of research and some prototyping. Here is what I can tell you. To make a briq. with hardwood sawdust, you will need roughly 24,000 psi. With that said, if the end or your briq that you are pressing against is 3x3, then you have 9 sqin. So, you will need 216,000 psi. Hardwood really does require that much pressure to get the lignin to successfully bind. I don't have softwood so I have no idea about it. Now, some presses use heat to help bind the dust so they don't need as much pressure. I don't prefer that. One, it's a fire hazard. Two, your product isn't nearly as dense. Most log splitters don't even put out 70,000psi. So lets say you have an 8" cyl. in your garage. To run it you will need a pump that will run at least psi. Most log splitters top out at psi. What I'm trying to say is that it will take a large cylinder and a good pump. Without 3 phase electric, it will have to run off an engine because you can't get enough hp out of single phase. I had a lot of my design built off of an ruf briquette press. And, I found out they have their infeed prepressure cylinder patented. What confuses me is that some companies have a machines that work very similar to theirs. I don't know enough about patents to know what I could legally get away with. I'm not looking for a lawsuit. If I had access to a machine shop, I would build one. I have all the basic tools. Welder, plasma, etc., but it still would require a lot of machining. The best way would be to make your cylinder part of the pressure rod. To make a reasonable priced custom cylinder would require access to a shop. I have stepped away from it for the time being. I have built some smaller prototypes with scraps rigged on a log splitter. I can make it work. But, it's not in my budget right now. And once it's built, if you find you built your infeed say to small, I would be depressed. I don't really see that being a problem, because with a plc you can change all of your timing and pressure setpoints instantly. But, as we all know there are unforseeable circumstances. If you decide to build one, or just tinker with it, let me know. I have done a lot of the hydraulic math for different combinations and such. Besides, you might have an idea I haven't thought of. I know most of this post is a let down, but if I had more time and 10 grand in my pocket. I would be ordering in parts tommorrow. It was good to see this post again. So does anyone have an idea they would like to share. I'd like to talk some more about this. I think a person could create a market for briqs. It would take a year or 2 to get where you need it to be profitable. Ya gotta start somewhere.
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