1, screening. The broken rice, the big chaff piece and so on the impurity sieve clean, achieves the hand to pinch without the hard heart. Particularly want to get rid of the net broken rice, because the broken rice in the main ingredient is starch, steam embryo absorbs the water to expand into the sticky paste, presses when the oil pipe is blocked, reduces the rate of oil;

2, adds the warm water. Add 50 degrees of warm water three to four percent;

3, stirring. Stirrer 480 to 500 revolutions per minute, stirring for 10 to 15 minutes, the temperature rises to 54 to 58 degrees;

4, keep the temperature moistening material. There are two methods, one is to use steam heating pipe to make the whole workshop heat preservation; the other is the press machine heat preservation. That is, with wooden boards, etc. will press the classified closed up to prevent the cake temperature dissipation to maintain the required temperature. Practice has proved that the room temperature is maintained at about 30 degrees, to press machine insulation method can improve the oil yield. Keep warm for 30 minutes, the temperature of 56 to 58 degrees, moisture is 13.5 to 13.8 percent;

5, do cake pressing. Each cake weighs about 2 kilograms, into the press moisture to thirteen point eight or so appropriate;

6, gross oil filtration. Pressing out of the gross bran oil contains cake powder and other impurities, to 60 mesh sieve filter, filtering oil temperature is generally about 80 degrees appropriate, filtering can be obtained after rice bran oil.