WSU CAHNRS

Western Wheat Quality Laboratory

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WHEAT ANALYSIS SYSTEM – MODIFIED QUADRUMAT SR. MILLING PROCEDURE

Figure 2. Semi-micro experimental mill flow with the roll corrugations per inch. The break rolls have corrugation spirals of 1.25, 1.75, 1.88, and 1.25 inch/ft. in progressive order, and the middling reduction roll spirals are 1.25, 1.25, 1.25, and frosted smooth. Roll spacings for first, second and third break are 0.035, 0.0035, and 0.002 inch respectively. The middling rolls are set at 0.0015, 0.0020 and 0.0015 inch respectively.
Figure2
BREAK UNIT REDUCTION UNIT
BRABENDER QUADRUMAT JR. WITH QUADRUMAT
SR. BREAK ROLLS
BRABENDER QUADRUMAT SR. REDUCTION UNI
ROLLS:Diameters:

      2.8 inches

Speed:
Fast rolls:

        1200 RPM

Slow rolls:

        560 RPM

Diferential:

      2.14 to 1
SIFTING SCHEDULE:Break Stock:
Bran:

        Removed after 1 min.

Middlings:

        Removed after an additional 2 min. (3 min. total)

Reduction Stock:

    3 min.
TEMPER:

      Soft wheats 13%
    Hard wheats 14.5%
SAMPLE SIZE:

    100-500 grams tempered wheat (held constant within each comparison group)
SIFTERS:

    8 and 12 inch Tyler testing sieves on strand sifters.
OUTPUT:

    5-7 samples per hour

 

Western Wheat Quality Laboratory, E-202 Food Science & Human Nutrition Facility East, P.O. Box 646394, Pullman, WA 99164-6394, 509.335.4062, Contact Us
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