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Rice Threshing and Polishing Machines Axial flow thresher and improved quality polishing

Efficient rice threshing and polishing for premium quality grains, boosting income and market access in african communities.

This technology uses special machines to help process rice after it's harvested. The first machine separates the rice from its protective covering. The second machine makes the rice look and taste better by gently polishing it. These machines are easy to move and can be used right in the fields where the rice is grown. They can be powered by generators or solar panels, so they work even in places with no electricity. Made from strong stainless steel, these machines are durable and easy to keep clean. This technology is a big step forward for rice processing, especially for farmers in Sub-Saharan Africa.


This technology is TAAT1 validated.


Scaling readiness: idea maturity 8/9; level of use 8/9

Cost: $$$ 4500 USD

Local thresher

20 %

Losses reduced

15000—20000 USD

Advanced polishers and whiteners

3000 USD

Small bench-top polishers


Patent granted


  • High grain losses due to manual threshing methods.
  • Inefficiencies in the traditional polishing process, particularly manual rubbing.
  • Time-consuming and labour-intensive artisanal practices.
  • Difficulty in processing large volumes of rice in communities.
  • Limited adoption of mechanized equipment due to high capital investment and configuration challenges.
  • Lack of access to modern mechanized technologies in many rural regions of Sub-Saharan Africa.


  • The motorized axial flow threshers employ a turning drum that efficiently separates rice grain from the chaff. This process significantly reduces grain breakage and loss compared to traditional manual methods.
  • The introduction of abrasive polishers using talc or fine dust automates and enhances the polishing process. This ensures a consistent and thorough removal of the bran layers, resulting in higher-quality rice.
  • The mechanized equipment drastically reduces the time and labour required for threshing and polishing. This allows for the processing of larger volumes of rice in a shorter amount of time.
  • The self-contained mobile units can be brought directly to paddy fields, eliminating the need for extensive transportation. This increases the processing capacity and efficiency, especially in communities with high rice production.
  • The technology addresses this by providing cost-effective and easily adaptable mobile units. These units utilize compact generators and solar panels, reducing the capital investment required for mechanized processing.
  • The mobile units are designed to be highly mobile and can be easily transported to even remote rural areas. This enables farmers in these regions to benefit from modern mechanized processing technologies.

Key points to design your business plan

The Axial Flow Threshers and Improved Quality Polishing technology may be of interest to manufacturers, resellers, and users (farmers).


Manufacturing axial flow threshers and quality polishing equipment offers a lucrative opportunity to transform agricultural operations. To enter this market, consider the following steps:

  • Identify suppliers or manufacturers of raw materials required for producing axial flow threshers and polishers tailored for rice production.
  • Determine efficient transportation methods and suitable storage facilities to ensure timely delivery and proper storage of the equipment.
  • The technology is available in Benin, Burkina Faso, Cameroon, Gambia, Côte d’Ivoire, Mali, Mauritania,Nigeria, Senegal. Factor in expenses such as transportation costs, import duties, and taxes to accurately assess the total investment.

Evaluate costs associated with manufacturing the equipment and identify key customers such as resellers, cooperatives, agricultural associations, and development projects.


Selling axial flow threshers and quality polishing equipment to farmers presents an opportunity to significantly improve agricultural efficiency and reduce labor-intensive tasks. To effectively enter this market, follow these steps:

  • Procure the equipment from reputable manufacturers located in Benin, Burkina Faso, Cameroon, Gambia, Côte d’Ivoire, Mali, Mauritania, Nigeria, Senegal.
  • Identify efficient transportation methods to transport the equipment from the manufacturers to the desired locations.
  • Ensure suitable storage facilities are available to securely store the machinery.

Determine the cost of the technology based on the size and specifications of the machinery required for your business. Consider expenses such as transportation costs, import duties, and taxes to accurately assess the total investment.

Potential customers include farmers, development projects, and farmers cooperatives or associations. 

Highlight the benefits of using axial flow threshers and quality polishing equipment, such as increased efficiency and reduced labor requirements, to attract potential buyers.


Utilizing axial flow threshers and quality polishing equipment can significantly enhance farming efficiency. Key partners in this endeavor include sellers or managers who handle mechanized equipment for farming.

When considering the cost of axial flow threshers and quality polishers, prices vary based on specifications. For instance, a local trailer-mounted thresher unit with an unhusked grain output capacity of 0.5-0.75 ton per hour costs around 4,500 USD, while advanced polishers are priced between 15,000 and 20,000 USD from retailers.


Positive or neutral impact

Adults 18 and over
Positive high
The poor
Positive medium
Under 18
Positive low

Negative or unknown impact

Negative low

Positive or neutral impact

Climate adaptability
It adapts somewhat well
It doesn't hurt them
Carbon footprint
It doesn't reduce emissions at all
Soil quality
It doesn't harm the soil's health and fertility
Water usage
It uses the same amount of water

Countries with a green colour
Tested & adopted
Countries with a bright green colour
Countries with a yellow colour
Egypt Equatorial Guinea Ethiopia Algeria Angola Benin Botswana Burundi Burkina Faso Democratic Republic of the Congo Djibouti Côte d’Ivoire Eritrea Gabon Gambia Ghana Guinea Guinea-Bissau Cameroon Kenya Libya Liberia Madagascar Mali Malawi Morocco Mauritania Mozambique Namibia Niger Nigeria Republic of the Congo Rwanda Zambia Senegal Sierra Leone Zimbabwe Somalia South Sudan Sudan South Africa Eswatini Tanzania Togo Tunisia Chad Uganda Western Sahara Central African Republic Lesotho
Countries where the technology has been tested and adopted
Country Tested Adopted
Benin Tested Adopted
Burkina Faso Tested Adopted
Cameroon Tested Adopted
Côte d’Ivoire Tested Adopted
Gambia Tested Adopted
Mali Tested Adopted
Mauritania Tested Adopted
Nigeria Tested Adopted
Senegal Tested Adopted

This technology can be used in the colored agro-ecological zones. Any zones shown in white are not suitable for this technology.

Agro-ecological zones where this technology can be used
AEZ Subtropic - warm Subtropic - cool Tropic - warm Tropic - cool

Source: HarvestChoice/IFPRI 2009

The United Nations Sustainable Development Goals that are applicable to this technology.

Sustainable Development Goal 2: zero hunger
Goal 2: zero hunger
Sustainable Development Goal 8: decent work and economic growth
Goal 8: decent work and economic growth

  1. Setup: Place the thresher and polisher near the fields.

  2. Adjust Thresher: Set speed and feed-in rate for efficient processing.

  3. Threshing: Feed rice into thresher for husk removal.

  4. Clean Grains: Use sieves and blower to remove husks.

  5. Polishing: Polish rice in the abrasive polisher for better quality.

  6. Control Speed: Adjust polishing speed to prevent breakage.

  7. Collect Rice: Gather processed rice for storage or packaging.

  8. Power: Ensure stable power supply for machines.

  9. Maintenance: Regularly check and clean equipment.

  10. Recordkeeping: Keep track of processing data.

Last updated on 31 May 2024