Rice Bran Oil Pre-treatment & Expansion Machine
Processing Material: Rice bran
Processing Capacity: 20-2000T/D
Processing section: Rice bran, cleaning, softening, expanding, drying etc.
Major equipments: Frequency conversion feeder, magnetic separator, Bran & tip separation screen, softening machine (conditioner), expansion machine, plate dryer etc.
Application: Extruded/expansion rice bran preparation and production.
Process flow of Rice Bran Oil pre-treatment & Expansion Machine introduction:
1. Rice bran is unloaded into expansion workshop from the raw material warehouse and fed into the bucket elevator through variable frequency feeder, and then conveyed to magnetic separator to remove the possible metal impurities.
2. The rice bran goes through Bran & tip separation screen to remove large complexes of rice bran and broken rice.
3. The cleaned rice bran will be conveyed into softening conditioner through elevator to adjust the moisture and temperature, and conveyed into the expansion machine through the bucket elevator, material storage and quantitatively feeder conveyor with frequency conversion stepless speed.
4. The expanded rice bran particle material will enter the static conveyor and then conveyed into chain dryer for drying. The expanded rice bran with moderately moisture and temperature will be sent to extraction workshop by scraper conveyor.
The Features of Rice Bran Oil Pre-treatment & Expansion Machinery:
Cleaning: Adopt the magnetic separator to removing iron impurities and rice bran & fine broken rice separation sieve to separate rice bran and fine broken rice.
Extrusion: Adopting the extruder machine can both improve the yield of rice bran oil and reduce the consumption. The extrusion, on the one hand, can make solution lipase in the rice bran passivated under high temperature and high pressure condition, then prevent the rice bran oil rancidity; On the other hand, the extrusion can make rice bran to be porous material grain, and increases the materials bulk density, then improve the permeability and extraction rate which solvent reacts to the material.
Drying: The extruded rice bran contains about 12% water, and the best moisture for extraction is 7-9%, therefore, there must be effective drying means to achieve the best extraction moisture. Adopting counter-current dryer can make water and temperature meet with follow-up process requirements, and improve the oil yield, as well as oil quality.