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.

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