Technological process introduction
1．Rice bran extrusion flow chart:
Rice bran→ Magnetic separation→ Cleaning →Extrusion Puffing →Counter-current drying→ To extraction plant
2. Main process description:
Adopt the magnetic separator to remove iron miscellaneous, and use rice bran and fine broken rice separation sieve to remove broken rice, fine broken rice etc.
Adopting the bulking machine can both improve the yield of rice bran oil and reduce the consumption. The extrusion puffing, 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 puffing can make rice bran be porous mateial grain, and increases the materials bulk density, then improve the permeability and leaching rate which solvent reacts to the material.
The puffed rice bran contains about 12% water, and the best moisture for leaching process is 7-9%, therefore, there must be effective drying means to achieve the best leaching moisture. Adopting flat dryer can make water and temperature meet with follow-up process requirements, and improve the oil yield, as well as oil quality.
3. Process feature:
a) Different combinations of process can process various oil plants in one workshop.
b) Use special intensified pretreatment technology for aroma peanut oil to make it more aroma.
c) Adopt advanced and reliable shelling technology to meet higher requirements for protein content in meal.
d) Extrusion treatment is used for raw materials with hard extraction, large-sized powder, and large capacity, which can reduce residual oil and solvent consumption, and increase the capacity by 50-80%.
e) The new technology of shelling and low-temperature treatment can ensure high protein and least denaturation.
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