Instant coffee has become essential to the modern lifestyle, combining the flavor and energy of the drink with the practicality of instant preparation. To serve a market that grows at over 5% per year, the industry has invested in technologies that guarantee superior sensory quality and maximum production efficiency.
Following this evolution, the Gratt offers the Vertical Centrifuge and the Decanter, fundamental equipment for the refinement of soluble coffee.
The Process and Technology
After roasting and grinding, the beans go through an extraction process under high pressure and temperature. The result is a concentrated extract that still carries partially insoluble fine solids. This is where Gratt technology makes a difference:
- Clarification: Centrifugal separators remove fine particles from the extract, ensuring a clear, high-quality drink.
- Solids Recovery: The sludge resulting from clarification still contains valuable extract fractions. With the Gratt Decanter, it is possible to process this sludge (adding water) to separate the solid phase from the liquid. This recovers the high-quality extract that would otherwise be wasted, increasing the plant's yield.
Efficiency and Sustainability
The use of Gratt solutions allows the full extraction of the grain’s potential. In addition to the direct economic gain, the solid phase (dry sludge) resulting from the process is ideal for thermal recycling, generating energy for the factory itself and promoting a sustainable and circular operation.
