A few good impeller machining procedure photos I identified:
Image from page 295 of “The flotation approach” (1916)
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Identifier: flotationprocess00richuoft
Title: The flotation method
Year: 1916 (1910s)
Authors: Richard, Thomas Arthur, 1864-
Subjects: Flotation
Publisher: San Francisco Mining and Scientific Press
Contributing Library: Gerstein – University of Toronto
Digitizing Sponsor: University of Toronto
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Text Appearing Before Image:
Froffy Concenfrafe. ^–Rubber Plug mfe ^ Trough for Froth. ^ Confracfeaf Spitzkasfen.Fig. 61. sketch of the lyster ob hoover machine.
Text Appearing Soon after Image:
Fig. 62. axother kind of hoover machine. compartment permits the material to be treated until all mineral hasbeen removed with no stopping the machine, so that a single treat-ment yields a clean tailing. Even so, a second therapy of thisrougher-froth is occasionally necessary in order to get a higher-gradeconcentrate. Clean tailings generally mean only medium-grade 288 THE FLOTATION Process concentrates due to entrainment of gangue, in the removal of allthe mineral. The stuffing-box in the bottom will possibly leak if not watched.However, this driving of the impellers from below, as an alternative of from
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Please note that these images are extracted from scanned web page pictures that might have been digitally enhanced for readability – coloration and appearance of these illustrations may not completely resemble the original function.
Image from page 292 of “The flotation process” (1916)
Image by Internet Archive Book Pictures
Identifier: flotationprocess00richuoft
Title: The flotation approach
Year: 1916 (1910s)
Authors: Richard, Thomas Arthur, 1864-
Subjects: Flotation
Publisher: San Francisco Mining and Scientific Press
Contributing Library: Gerstein – University of Toronto
Digitizing Sponsor: University of Toronto
View Book Web page: Book Viewer
About This Book: Catalog Entry
View All Pictures: All Pictures From Book
Click right here to view book on-line to see this illustration in context in a browseable on-line version of this book.
Text Appearing Just before Image:
FlG. 58. THE JA^^■EY MACHINE. COVER INVERTED. kind. F. G. Janney recommends the use of a General Electric,shunt-wound, direct-current motor, for 230 volts, with a rated speedof 1700 r.p.m. and ^ hp. The impeller-shaft is to be driven at 1900r.p.m. maximum speed. For speed-control he recommends a Basic 284 THE FLOTATION Approach Electric direct-existing field-rheostat, with an ampere capacity of1.25 to .063 at 250 volts. In our own laboratory it was desirable to use the ordinary city-lighting circuit of 110 volts, A. C. On that account we have located
Text Appearing Following Image:
Fig. 59. the janxey machine, cover upright. the following motor satisfactory: |-hp. General Electric repulsioninduction motor, single-phase, 60-cycle, with complete speed of 1780 andcarrying four.two amperes at 110 volts, or 2.1 amperes at 220 volts,depending upon the voltage of the current supplied to the machine,either voltage being acceptable. Speed-handle is obtained by the TESTING ORES FOR THE FLOTATION Procedure 285 use of an ordinary field-rheostat in series with the motor. Such amotor has a speed varying with the load and with the voltageapplied. As the load is virtually a continual, the speed will dependupon the amount of resistance in series with the motor. As themajority of laboratories uncover a city alternating present far more con-venient to obtain, such a motor is advised. The operation of the machine is as follows: It is set up on abench convenient to the sink and to running water. The motor is ^ three^_
Note About Photos
Please note that these photos are extracted from scanned page images that may possibly have been digitally enhanced for readability – coloration and appearance of these illustrations may possibly not perfectly resemble the original function.