. Graphite. ers Throughs Screen (30 mesh)pir \4Z5T Overs Throughs \67S TThroughs Screen {30mf>sh>[35f \4IST Overs Throughs Sutton. Steele & SteeJe dry table\ijf ]ii~T \2T Tails Midds Deduster\365T \45T Overs Throughs Screen (30• mesh(IT \36ST Overs Throughs \6STOvers 120-5 T ?Screen (60 mesh) Dust chamber Screen (/SOmesh)[17 \/25T Throughs \60T D-j Overs IsSST Throughs Screen ISO mesh) 60meshtable Bin 60-90mesh 124ST Throughs Sin SO-ISOmesh ~l?T \285TCones Tails. \2ST \24 TCones Tails Dry table ysi Cones r Screen (70 mesh! Screen (70mesh) Throughs Polishing rollsScreen \/50mesh)Throughs
. Graphite. ers Throughs Screen (30 mesh)pir \4Z5T Overs Throughs \67S TThroughs Screen {30mf>sh>[35f \4IST Overs Throughs Sutton. Steele & SteeJe dry table\ijf ]ii~T \2T Tails Midds Deduster\365T \45T Overs Throughs Screen (30• mesh(IT \36ST Overs Throughs \6STOvers 120-5 T ?Screen (60 mesh) Dust chamber Screen (/SOmesh)[17 \/25T Throughs \60T D-j Overs IsSST Throughs Screen ISO mesh) 60meshtable Bin 60-90mesh 124ST Throughs Sin SO-ISOmesh ~l?T \285TCones Tails. \2ST \24 TCones Tails Dry table ysi Cones r Screen (70 mesh! Screen (70mesh) Throughs Polishing rollsScreen \/50mesh)Throughs Over. Oversfbhshmg rolls Screen (/SOmesh) I \OST Overs Throughs Screen (90 mesh) WSrTails Throughs \Dry table Screen (/SO mesh) I l3^ Overs Throughs Screen QOmesh) |Jr \/st Overs Throughs A/°/product A/° 2productREFINING 4T Dust product CONCENTRATING Fig. 18. Flow sheet of dry concentration system by means of a combination of rolls and tables, as installed in a Quebec —p. 76 Fig. 17. 77. 35c£ 78 The large amount of dust produced in dry mills is very objectionable,and there is seldom any attempt made to install an adequate system ofdust collection. The chief objections to the dry system outlined aboveinclude failure to make a satisfactory recovery; inability to eliminate micafrom the concentrates, and the large number of belts, elevators, -etc.,required, necessitating frequent shut-downs for repairs. Details of flow sheet Fig. 19: 1. Vertical kiln—oval, 5 x 7 x 18, plus stone base 14 high. 2. Telsmith crusher No. 5—down to 2\. Inclined elevator El. 3. Eureka jaw crusher—down to 1. 4. 40-ton steel, hopper-bottom bin. Vertical elevator E2. 5. Automatic roll feeder. Vertical elevator E3. 6. 36 x 16 ridged rolls—Jenckes Machine Co.—down to \. Vertical elevator E4. 7. Screen: hexagonal trommel, No. 8 steel cloth (|), 30 diam. x 8. 8. Rolls 16 x 10 (Krom)—down to \. Vertical elevator E5. 9. Rolls 9 x 30 (special)—down to 24 mesh. (Double roll on one fram
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Photo credit: © The Reading Room / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorcanadami, bookcentury1900, bookdecade1920, bookyear1920
