How to process and utilize rice husk



Rice hulls are the outer shells of rice grains that are removed during the processing of the grains into rice. The color and thickness of the rice husk varies depending on the variety of rice and growing conditions, and is usually pale yellow to brownish-yellow in color, with a thickness of about 24 to 30 microns. The main components of rice hulls are cellulose, lignin and silica, with a high content of silica, giving the hulls high hardness and abrasion resistance.

Recyclable value

As a by-product of rice processing, rice husk has significant recycling value. Not only can rice husk be used as a biomass energy source for power generation and heating, reducing dependence on traditional energy sources, but its richness in organic substances and nutrients also makes rice husk a high-quality organic fertilizer and soil conditioner, which helps to improve soil fertility and crop yields. In addition, rice husk can be used as animal feed, industrial raw materials and many other uses, such as the manufacture of activated carbon, silicon compounds, etc., and has a wide range of application prospects.

Processing flow

Rice husk treatment: Firstly, rice husk needs to be preliminarily treated, including removing impurities and dust in it, and cleaned to ensure the quality and hygiene of the subsequent processing.
Drying of rice husk: The cleaned rice husk is dried to reduce its moisture content. This is usually realized by methods such as oven or natural drying to ensure that the rice husk has a low moisture content before milling to improve milling efficiency and product quality.
Milling: The dried rice husk is added into the milling machine and the machine is started for milling. During the milling process, according to the characteristics of rice husk and production demand, adjust the parameters of the mill, such as rotating speed, feed amount, etc., in order to obtain the ideal particle size of rice husk powder.
Sieving: The milled rice husk powder needs to be sieved to remove the large particles and non-compliant impurities from it. This is usually realized by vibrating screen or cyclone separator to ensure the purity and size of rice husk meal meets the standard.
Quality Inspection: The sieved rice husk powder is inspected for quality, including checking its particle size, color, odor and other indicators to ensure that the product meets the quality requirements.

Features of rice husk pulverizer machine
Efficient Processing Capacity:
Well-designed rice husk milling machine can quickly and efficiently convert rice husk into fine powder, which greatly improves the production efficiency.
Multifunctional adaptability:
The rice husk milling machine is not only suitable for grinding and processing of rice husk, but also can deal with other similar crop by-products, such as straw, corn cobs, etc., showing its good adaptability.
High grinding quality:
Through precise adjustment and control, the rice husk milling machine can produce rice husk powder with uniform particle size and stable quality, which can meet the needs of various industrial applications.
Energy saving and environmental protection:
Modern rice husk mill usually adopts energy-saving design, which can effectively reduce energy consumption, and at the same time reduce the noise and dust emission during the production process, which is in line with environmental protection requirements.
Simple operation and easy maintenance:
The operation interface of the rice husk mill is simple and clear, easy to grasp. At the same time, the maintenance of the equipment is also relatively simple, reducing operating costs.

Related Machines


PNMP Pulverizer

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