Japan Platform for Redesign: Sustainable Infrastructure (JPRSI)

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Rice Husk Briquetting Machine (Grind Mill)

Technology / Service Summary

Tromso Co., Ltd. is based on ship-building industry technology in Hiroshima, Japan. our rice husk briquetting machine (called the Grind Mill) uses often-underutilized rice husks to produce useful briquette fuels called "Momigalite". "Momigalite" can be used in place of firewood or charcoal, boosting forest preservation efforts.


We create added value by converting rice husks into solid fuels and agricultural materials.


Rice husk solid fuel is solidified using only pressure and heat without using a binder. NOx/SOx which is a harmful substance, is not generated during combustion. The calorific value of rice husk solid fuel is 3,970 kcal / kg (about 16,621,600 J / kg), while the amount of firewood sold in general is about 4,000 kcal / kg (about 16,747,200 J / kg), which is almost the same. In Japan, it is used for heating water in hot spring facilities, indoor heating, greenhouse heating, barbecue fuel, etc. It is also used for daily household fuel, industrial boilers, etc. in overseas. No specialized knowledge is required to operate the equipment, and anyone can drive it with our training (about 1 day).


Since rice husks absorb carbon dioxide in the atmosphere during the process of rice growth, the amount of carbon dioxide generated when burning the rice husk solid fuel is the same as the amount of carbon dioxide absorbed, which is "carbon neutral". It manufactures such "carbon neutral" fuel (excluding energy used during manufacturing)

Controlled Substance

Applicable Regions / Countries

  • Japan
  • Southeast Asia
  • Central/South Asia
  • China/ East Asia
  • Middle East
  • Africa
  • Oceania
  • Europe
  • Central/South America
  • ASEAN countries

    Indonesia,Cambodia,Singapore,Thailand,Philippines,Brunei Darussalam,Viet Nam,Malaysia,Myanmar,Lao PDR


Japan 118 units
Nigeria 8 units
Tanzania 9 units
Madagascar 3 units
Senegal 2 units
Vietnam 2 units
China 1 unit

Related SDGs Goals

  • 6. Clean Water and Sanitation
  • 7. Affordable and Clean Energy
  • 8. Decent Work and Economic Growth
  • 9. Industry, Innovation and Infrastructure
  • 13. Climate Action

Rice Husk Briquetting Machine (Grind Mill)