Shaking mills

Fig. 4. Malt mill with six rollers and shaking screens (1 = flour 2 = husks 3 = flue grits and, 4 = coarse grain).

Weigh 10 g of the milled sample in a 300-mL Erlenmeyer flask and soak in 20 mL of distilled water for 2h. After adding 100 mL of acetone and shaking vigorously with a mechanical shaker for 30 min, filter the extract by suction through overlapping... 

Figure 2. Cellulose synthesis by Rut-NG14 in a 6% cellulose fermentation. (Data from M. Mandels, U.S. Army Laboratories, Natick, Mass.) (O—O) Residual dry weight, (A—A) FP units/mh (42), ( — ) soluble protein, (A—A) mycelial protein. Substrate 6% two-roll milled cotton Mandels (42) basic salts medium without urea inoculum 20% v/v of a 3-day-old shake flask mycelium pH > 3, continuous addition of NH OH.

A cloud of zinc dust generated by sieving the hot dried material exploded violently, apparently after initiation by a spark from the percussive sieve-shaking mechanism [1]. Precautions recommended include use of cold zinc and total enclosure of such processes [2]. The possibility of explosions of zinc dust suspended in air is presented as a serious hazard [3]. A serious dust explosion in the air filter unit of a zinc grinding mill was initiated by a spark from an explosion relief panel [4]. 

Figure 8.6. Schematic diagram of a shaking bead mill.

Rotor Bead Mills. Larger-capacity laboratory bead mill cell disrupters agitate the beads with a rotor rather than by shaking. Equipped with efficient cooling jackets, larger sample volumes can be processed without over-... 

Ceram. Soc., 18, 286 (1939). Sivamohan and Foissberg, Principles of Tabling, Int. I Min. Proc., 15, 281 (1985). Stockett, Milling Practice of the St. Joseph Lead Co., Min. Technol, 7(3), 1 (1943). Upgrading Fragile Coal to Premium Metallur cal Product, Coal Age, 64,94 (July 1959). Wills, Laboratory simulation of shaking table performance, Mining 489(June 1981). 

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