Fineness of grinding

ASTM E20-843 for color strength in ink, and ISO 8781 (parts 1—3) for evaluating tinting strength, fineness of grind, and gloss. 

The Raymond ring-roll mill with its internal air separation is widely used to pulverize phenolformaldehyde resins. The usual fineness of grind is finer than 99 percent minus 200 mesh. Air at 4°C (40°F) is usually introduced into the mill to limit temperature rise. A typical 3036 Raymond mill using 34 kW (45 hp) will produce better than 900 kg/h (2000 Ib/h) at 99 percent minus 200 mesh. 

DIN ISO 1524-6-1987 and EN 21 524 Lacke und Anstrichstoffe -Bestimmung der Mahlfein-heit (Kornigkeit). Determination of fineness of grind. Determination de la finesse de broyage. 

Method 6.5. Determination of fineness of grinding (150 gm/100 mesh fraction)... 

The method intended to measure the "fineness of grind is described as Method 4411.1 (Sept 1, 1965) of Federal Test Method Standard No 141a. The apparatus consists of a device known as the Hegman Gage... 

Ammonium nitrate is milled until granules with a particle size ranging from 5 to 500 n are obtained. Fineness of grinding governs the rate of burning of the mixture. 

Other aspects of quality that should be considered are mycotoxin contamination of ingredients and fineness of grinding of ingredients during processing. 

ISO 972 1997 Chillies and capsicums, whole or ground (powdered) - specification ISO 7540 1984 Ground (powdered) paprika (Capsicum annuum L.) - specification ISO 3588 1977 Determination of degree of fineness of grinding - hand-sieving method (reference method)... 

The suitability of a slag for use in a composite cement depends primarily on its reactivity, though grindability and contents of water and of undesirable components, especially chloride, must also be considered. Reactivity most obviously depends on bulk composition, glass content and fineness of grinding, though these are probably not the only factors and the relations with composition and glass content are complex. 

Fineness of grind (see below) High speed impeller mill 8780-3 ISO 8780-3 EN ISO 8780-3... 

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