Classifying – separating – and assorting solids – Fluid suspension – Liquid
Patent
1990-05-09
1992-04-14
Hajec, Donald T.
Classifying, separating, and assorting solids
Fluid suspension
Liquid
209208, 209642, 494 43, B03B 558
Patent
active
051045222
ABSTRACT:
Fractionation apparatus utilizes a rapidly rotating disk which receives a suspension of particles to be separated in a liquid. The rotating disk has a planar floor onto which the particle containing liquid is supplied. The floor is joined to an inclined inner wall in a smooth curve. An axially symmetric trip, located between the inner wall and an outwardly extending, preferably upwardly inclined skirt, maintains particles in the film away from the surface of the disk and results in more efficient ejection of large particles from the liquid. Smaller particles are ejected from the disk along the rim which descends from the skirt or from the edge at which the skirt joins the rim. The characteristics of the disk surface, the disk speed, the size and number of trips, the suspension feed rate, and other operating conditions can be selected such that highly efficient fractionations of particle suspensions, such as wood pulp slurries, can be obtained.
REFERENCES:
patent: 472682 (1892-04-01), Pape et al.
patent: 653792 (1900-07-01), Dasconaguerre
patent: 1064579 (1913-06-01), Wennberg
patent: 1358375 (1920-11-01), Koch
patent: 1517509 (1922-03-01), Hokanson
patent: 1853249 (1932-04-01), Ainlay
patent: 2224169 (1938-08-01), Turnbull
patent: 3276591 (1963-10-01), Hultsch
patent: 3326459 (1964-10-01), Leroux
patent: 3485360 (1967-08-01), Deinken et al.
patent: 3591000 (1971-07-01), Humphreys
patent: 3819110 (1974-06-01), Baturov et al.
patent: 4288317 (1981-09-01), de Ruvo et al.
patent: 4427541 (1984-01-01), Crosby et al.
patent: 4793917 (1988-12-01), Eremin et al.
patent: 4798577 (1989-01-01), Brenneman et al.
Soviet Inventions Illustrated, Derwent Publications Ltd., London, GB, Section Chemical/General Week E44, Abstract No. 82-94771E, Classes JO2 P41, Dec. 15, 1982, and Soviet Union patent document SU-A-895571 [A.N. Dubovets et al.].
Chemie. Ingenieur Technik., vol. 37, No. 12, Dec. 1965, Weinheim De, pp. 1221-1223, A. Kober et al., "Trennung Durch Adhasion-Ein Neues Verfahren Zum Nassklassieren".
Patent Cooperation Treaty published application WO-A-8 404258, published Nov. 8, 1984.
Felsvang et al., "Screening, Cleaning and Fractionation with a Rotating Cup Atomizer", 17th EUCEPA Conf., Vienna, Austria, Oct. 10-14, 1977.
Moller et al., "Screening, Cleaning and Fractionation with an Atomizer", Paper Technology and Industry, vol. 20(3), Apr. 1979, pp. 110-114.
Moller et al., "High-Consistency Pulp Fractionation with an Atomizer", TAPPI, Sep. 1980, vol. 63, No. 9, pp. 89-91.
Oroskar et al., "Fiber Separation with a Vaneless Spinning Disk: Determination of Mechanism", 1983, Pulping Conference, TAPPI Proceedings, pp. 673-677.
Klungness et al., "Fiber Separation with a Vaneless Spinning Disk: Application", 1983 Pulping Conference, TAPPI Proceedings, pp. 679-683.
Klungness et al., "Fiber Separation with a Vaneless Spinning Disk: Application", TAPPI Journal, vol. 67, No. 6, Jun. 1984, pp. 78-81.
Oroskar et al., "Vaneless Disk Fractionation of Slurries", Ind. & Eng. Chem. Fundam., vol. 25, No. 4, .+-.986, pp. 483-490.
Anil Rajaram Oroskar, PhD. Theis, University of Wisconsin-Madison, 1981, entitled "Spray Fractionation".
Crosby Edwin J.
Oroskar Anil R.
Sethna Rustam H.
Hajec Donald T.
Kaufman Joseph A.
Wisconsin Alumni Research Foundation
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