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1. What is crushed rice husk?

Crushed rice husk, also known as rice husk, ground bran, husk bran, rice bran powder, etc., is produced after processing rice husks and grinding them through specialized milling machines.

The resulting product is crushed rice husk, which is fine and smooth, usually white or light yellow depending on the quality of the rice husks and the specific production process.

With 100% pure rice husks as the input material, crushed rice husk is entirely natural, safe, and environmentally friendly. Moreover, crushed rice husk production is an essential part of the pelletizing process, occurring in the initial stages of production before pelletization.

2. Structure and technical characteristics of crushed rice husk

After passing through a screening system, crushed rice husk yields various sizes ranging from 0.3 to 2.2mm, depending on customer requirements.

Technical specifications of crushed rice husk
Calorific value (DB)	3200 - 3900 cal/g
Moisture content	3 - 8%
Ash content	8 - 12%
Sulfur content	0.07%
Shape	Powder form with diameters of 0.3 - 2.2mm
Density	150kg/m3

3. Applications of crushed rice husk in life and production

Similar to rice husk pellets, crushed rice husk, with its natural composition and characteristics from rice husks, provides significant benefits and is applied in various fields of life and production.

3.1 Agricultural use

• Crushed rice husk is commonly used as animal feed for livestock, poultry, and aquaculture. Due to its high fiber and plant protein content, it serves as a filler with specific ingredients such as vitamins, crude fat, crude protein, etc., providing essential nutrients for animal growth.

• Additionally, when mixed and fermented with other fertilizers such as animal manure, fish waste, or earthworm castings, crushed rice husk produces natural organic fertilizer rich in nutrients, enhancing soil fertility, moisture retention, water retention, and simultaneously promoting efficient plant growth and disease resistance.

• Furthermore, crushed rice husk powder is used to eliminate odors, reducing unpleasant odors in livestock pens. Its excellent heat absorption capability creates a drier environment, while odor molecules are absorbed into the fiber of the crushed rice husk, dispersing odors from animal feces and urine.

3.2 Industrial use

Crushed rice husk serves as a potential fuel source for industrial boilers. Typically, to ensure maximum combustion efficiency, crushed rice husk is used in two standard size ranges:

• Standard size range 0.7 - 1.5 mm: Direct injection into boilers using spray combustion or combined with the combustion of large-sized materials such as rubber wood, cashew wood, etc.

• Standard size range 1.2 - 1.8 mm: Mixed with other equivalent-sized fuel materials (rice husks, sawdust, wood chips, etc.). This combination not only provides stable energy sources but also optimizes production processes and minimizes waste.

3.3 Use as raw material for other industries

In addition to agriculture and industry, crushed rice husk is utilized as raw material in various other industries, including paper and packaging production, manufacturing thermal insulation materials and fire retardants, making incense powder, blending in the wood industry for plywood, particleboard, etc., and producing rice husk pellets.

4. Reasons to use crushed rice husk as fuel

Crushed rice husk is considered one of the green energy solutions in industrial boilers due to its outstanding advantages:

• Combustion capability: With a high calorific value and a small, fluffy shape, crushed rice husk exhibits strong combustion and heat generation, enhancing combustion efficiency and stability.

• Efficiency and cost-effectiveness: Crushed rice husk often comes at a lower cost compared to fossil fuels, allowing businesses to reduce production costs and gain competitive advantages in business.
• Easy to use and combine: Crushed rice husk can be used in various industrial boilers without requiring changes to boiler structures. It can also be custom-combined with other fuel sources to optimize combustion efficiency according to business needs.
• Low pollution: Being produced from 100% natural plants, crushed rice husk does not emit additional CO2 emissions, making it an attractive choice in efforts to minimize negative environmental impacts.

• Renewable and sustainable: Crushed rice husk is derived from rice husks, making it a renewable resource that does not deplete natural resources. It also promotes sustainable and environmentally friendly development.

5. How is the price of crushed rice husk determined?

Seasonality, supply sources, purchase quantity, and delivery location are the main factors affecting the price of crushed rice husk. To obtain it at competitive prices, businesses should regularly monitor market fluctuations and seek reputable suppliers for cooperative agreements.

6. Where to buy crushed rice husk?

Businesses should prioritize selecting suppliers with strong and stable supply capabilities. These suppliers typically manufacture their own products to ensure quantity, quality, and excellent product support services, meeting customer needs.

Thuan Hai takes pride in being one of the leading energy companies in the market with over 10 biomass manufacturing plants nationwide. We supply over 1 million tons of biomass annually, providing customers with high-quality, stable, and continuous supplies of crushed rice husk at the most reasonable prices. 

Contact us for consultancy on crushed rice husk and various biomass fuel options.