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Malcolm Flavel Phones & Addresses

  • 1712 Pershing St, Appleton, WI 54914 (920) 733-2675

Publications

Us Patents

Operation Of Associated Crushing Plant And Mill

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US Patent:
42818001, Aug 4, 1981
Filed:
Nov 2, 1979
Appl. No.:
6/090657
Inventors:
Malcolm D. Flavel - Appleton WI
Assignee:
Allis-Chalmers Corporation - Milwaukee WI
International Classification:
B02C 2100
B02C 2500
US Classification:
241 24
Abstract:
A method for operating a crushing and grinding facility is disclosed in which crushing of mine-run material is controlled to always match grinding feed requirements while both crusher(s) (10) and grinding mills (16) operate full time and draw full power during the hours of what may be unequal length working days. The grinding mill (16) is also operated to produce the maximum output of final product that is within its existing capabilities. At each of a succession of measurement times (e. g. , every 1/2 hour during a 22-hour working day of the mill), the rate of production of final product by the grinding mill (6) is ascertained (as by 21, 22, 23) and projected to the end of the mill working day. At each such time, feed of mine-run material to the crusher (10) is adjusted (as by 27-33, 11) to a rate which, if maintained through the remaining portion of an 18-hour crusher working day, would cause production of a target quantity of crushed product (at 8) which would equal projected total daily production of ground product (at 9 ). However, the mill (16) will not maintain its prevailing rate of production because grindability of crushed material is unpredictably variable.

Method Of Controlling Feed Rate To Crushing Plant While Crushers Are Adjusted To Continually Operate At Full Power

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US Patent:
41790740, Dec 18, 1979
Filed:
Aug 30, 1978
Appl. No.:
5/938259
Inventors:
Malcolm D. Flavel - Appleton WI
Assignee:
Allis-Chalmers Corporation - Milwaukee WI
International Classification:
B02C 2300
US Classification:
241 24
Abstract:
For control of a crushing plant to ensure both that a quota quantity of product is produced during each working period and that the product has optimum economic value by reason of small particle size, determination is made of the amount of product passed through the plant from the beginning of the period to each of a number of measurement times during the period. Each such determination gives a "still to go" quantity, hence a theoretical new feed rate to be maintained. The rate of feed of material into the plant is adjusted in correspondence with the ratio between that theoretical rate and the actual feed rate prevailing during an interval just before the measurement time. The crushing mechanism is controlled constantly to draw the full power available to it while it maintains output substantially in step with prevailing feed rate, such control being effected by adjusting crusher setting, apportioning feed material between crushers and/or controlling the relative portions of output material from a crusher that are respectively recirculated through that crusher and transferred elsewhere.
Malcolm D Flavel from Appleton, WIDeceased Get Report