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How to Make Bagasse and Mill Mud Into Fuel Pellets

Date: 12/31/2020 09:13:30 From: Clicks:

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Sugarcane is an indispensable crop to maintain the global sugar supply and accounts for the largest share of sugar production. Sugarcane is produced in 100 countries/regions in the world. There are many sugar factories in Southeast Asia and Brazil, which will produce large amounts of bagasse after extraction. Most factories do not know how to deal with these materials, and a large amount of waste takes up the space of the factory. Few factories use bagasse fiber to make pellets for burning as fuel. How to make bagasse and mill mud into fuel pellets?

Although sugarcane has been an important crop for hundreds of years, it has only recently begun to add value: the bagasse fiber and other by-products are made into fuel pellets. The latest developments in technology have enabled sugarcane and its related by-products to be processed into a variety of useful materials and products, including energy, sustainable packaging, etc. Two by-products in particular, offer significant value in the form of energy and nutrients: bagasse and mill mud.


After the sugarcane plant has been harvested, it is pressed to release the raw sugar contained within. Once the sugar has been extracted, the resulting leftover material is a fibrous plant matter, referred to as bagasse.


Bagasse has come to serve as a valuable fuel source for the sugarcane processing industry. Considered a biomass product, bagasse can be burned and converted into electricity, or further processed into an ethanol product. Bagasse has been important for energy generation for centuries, but only recently has it become more commercially available as an alternative fuel source. Utilizing bagasse as a source of biofuel has allowed sugarcane processing plants to be self-sufficient in providing their own energy. In fact, bagasse can provide so much energy for sugarcane processing plants, that they often have energy left over to sell back to the grid. Furthermore, advancements in cellulosic ethanol and biofuel production have made it possible to produce liquid fuel that can be used in cars, tractors, and the like.

Before bagasse can be processed into biofuel, however, it first must be dried. Bagasse left over from the sugar extraction process still contains a high concentration of moisture, making it difficult and inefficient to burn. In order to be processed into biofuel, the bagasse must first be dried. For this reason, a bagasse dryer is employed to bring the product down to the desired moisture level, as well as create a more uniform moisture level, ideal for burning.

Mill Mud

Mill mud is also a by-product of sugarcane processing, and is produced in significant amounts, requiring disposal and management measures.

Traditionally, mill mud has been treated much like manure, being spread on nearby sugarcane fields for the value it offers as a soil additive. Not only does mill mud provide the nutrients necessary for plant growth, but it also improves physical soil properties, and can help to raise soil pH.

Mill mud bears a striking resemblance to manure and its associated problems. While mill mud is undeniably beneficial as a soil additive, just like manure, too much can yield problems in the way of run-off, mismanaged crop nutrients, and other related problems. Furthermore, mill mud is produced at a rate that far exceeds the demand, creating over-application and stockpiling problems, and ultimately a need for better management solutions. Mill mud also contains traces of heavy metals, which, in high amounts, could be detrimental to the soil and surrounding environment. For this reason, more research on the long-term effects of continuous application of mill mud is needed.

Just like manure, one potential opportunity for managing mill mud could be through granulation. Not only does granulation offer an opportunity to more closely control nutrient management, but it can also turn a difficult to handle material into a dry, granular product, which can be stored, or packaged for sale. Furthermore, a granular mill mud product could be stored significantly longer than unprocessed mill mud, and would improve application with a spreader, since a granular product is more easily applied. Together, this would help to alleviate the problems associated with the over-application of mill mud due to excess supply.

How to Make Bagasse and Mill Mud Into Fuel Pellets

1. Drying

The moisture of fresh sugar can bagasse is about 48~50%, to solidify the bagasse, the first step is to dry the bagasse to the moisture of less than 12%, otherwise the moisture extra would be evaporated while heating and pressing, resulting in the pellets craze and rough in surface.


Before pelletizing, the material should be cut into small pieces with the granularity of 3-5mm.

3. Pelletizing

Pelletizing is the most important step of making bagasse pellets, sugarcane bagasse pellet mill with good quality can achieve better pelletizing effects. SIMEC can design the pellet mills based on the customers actual production need, saving costs and reduce waste.

Sugarcane Bagasse Pellet Mill
Sugarcane Bagasse Pellet Mill

4. Cooling and Sieving

Cooling and sieving units as one, saving the floor space as well as the processing time.

5. Packaging

After cooling, the pellets can be packaged by automatic packing machine. Pellets being packaged is easier to be stored and transported.

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