New-York tribune. [volume] (New York [N.Y.]) 1866-1924, 1890-09-30

and tst sS concent.uted rs above described is pc
cnlary adapted to use In the heat in the process Of
the snl F'' Gecrepson place. a, ,s
r.aH prs,s s Up into m s"sl' for rand
r aRt Oh in the and m alSfd aSSbe
iushy Of tine o' and 0 regularity Of work
Thn sn ler outlined s paper ste em
brared in q process on which apphca"o' '''
patent has been made.
DESCRIBING A MAGNETIC SEPARATOR
A papcr by c. NJ Ball, Of Trey, descrioca .ne
Rail and Norton Mouarch' maShe'ic sepu' -,
Of which working model was ." ',,.,. ~ ,hc
tbA hall. The following is summary VI viz
paper: . ur.r,,on Of sheldon
Noitnn OF Hohendauqua Penn. ana ma s.h' Nd liner
beon patented i'll the United o'a'e'' '"'''''
Tne Perfected Monarch orcseparater aaapeS lp
sen,n,inr Ine ORE and that adapted ior .Huu ,, ~
scp,''o H.. -, .tove or chestnut coal are idehtcal ~
principle, and vary from each 0'"ef j" '''''' N|'
| only. -, y r.rtiauv clesc,L chest
having a. opening from the feed hopper. th"s n"rke
the ore T. d lin ' With regulating the
dow ore, that when inc nac S =. nctnrs are
nroyaed for tho discharge Of tangs Of middnss nnd
concentrate The opnnss are en m1p5 esSted
witch d,chsrgc the products from the hoppes rua,
nuous .d IN s s rG prGpI Ss accumulated sT upon
the inside to the contents Of the hoppcrS 10 A"
Dy the valves. IA, 49,. .-.,rn, +rrn
ing =" mpon shafts These shafts. together with TIE
wnh they a !. ,sfSs to rsH pp"pd "%d
naaHeis Of contact hercw Ihe mn hsss
S sCh sna approx third periphery
OF the drum, within the influence Ok tie masne niS
field while the upper twothds Is outside VI me llciu
and removed from the magnetic influence. The mag,
net t. 20 Constructed a. to present series OF loics
Of the d4 opn 7" STs ~h TN s
phenomena Of masncc attraction wch IN ,
distance from the magnetic poles. any msgnettzaole
matter brought near the outer surface OK the arnn,
within the arc covered by the magnet Will be power
fullv attracted and drawn into firm contact with the
on,cr surface NJ the drum. 49,.
neutral material. such wood. paper. etc.
' ' ar,,,s ,c r"rvn l@wn~ard AID "rwuri in
the dec on Of the r",''lon Of 'he drum IT'S lower por
The drum Th1 ecr,, chute to direct the stream OF
,llln. from III" f" hopper within IN" iaku"n'c
ii si,nar Int somewhat Shorter apron arranged q
ihe rlati'n to the Icc"nd drum and m a Ims
rent. which fnNls an Important function In the pro
Of separating ore as developed In this apparatus
s. sn s ar s s'. ont The
the action ~ powerful cShhnst.fan.
Di.r>.I.s or THE PROCESS
When IL" machine is put in operation the magnets
are cAcl'.d, the drums rcvOved In te direction
Lcforc ndcstcd the rcurrent Is established through
the machine In a direction opposite 10 that OF the
rotation Of the drums and IL supplied through The
i,sd hopper. which is kept always hll. The orc
passc> down the chute under the first drum and. a,
soon n, II comes within the influence Of the magnet
tho nasmctzsble portions are drawn into con-
tact with the dun. and through friction
uton It's surface take on tie forward moe
mcnt %, the drum. At this stage. curious ana
important result takes place In accordance with The
wcllkuown laws of magnetic induction. u particle Of
iron brought near a magnet h'eu becomes masne'
by induction and tie msg,.c'.c force tend, to brlnG
he longer ay.> ~ this induced magnet lnto positioi
l,,o % %
naeic;.r fore. Il >iIea particle. Or niaiy parti
r b.Ur,ht near o.e poe Of magnet stand "A rnd
a. - were. and, III hc Of MANY pttr L.
simultaneously 'nfne""cH by a, same p"i". the,
end, rrpcllns elch Other, bur all pointing in ,h'
direction ct ti- line, ~ f'rc toward some ioCu'
I,. lw the particle. u ors in coniart with the d,ni.
oppu,,i" one "i the pole, oi the iiaehc S'n'd o.
ed. forming tnt~ spreading away from cssh 9thc
( ever, 10y friction against thr moving. drum, whel
iicy lie down iia against the surface OF the drum
and. they drawn ,t.ll further along they asaiI
/" p"-i"r through the masnc,c nrd they tambl.
end over end a, many times ~ there are Poles IL
r,rr-d In position opportunity Is attended for an,
ncnnasne,,c particle. Of s'n:u" which may ha ,S
uf, Of magnetic und this rrsnit Is still turtle
facilitated by The Centrifugal tendency ami hy thu
When the rach"~ the Limit Of the arc covered b,
the magnetic Held is no longer attracted and take
on tascnt,al movement which carrie. it away from
the drum 1t Id. now. however. passed the edge u
the second apron anu on leaving the nr>t drli come
within the influence the magnet Of The >croiId drum
where similar operation, are repeated. PARTON bn
dis ars 4 concentrate In" fun' zion of tl
second drum and magnet hrirs 10 dihrtriitintc q,
product the first drum into two portions. wii'
nay he tonvrnrnily dc-isnat"d mlddllnSl and c"'
/ ccnirai". The mddlinEs consist ~ particles ot or
with adhrrng portions of gangur. wErl may r'iui'
Il ic finer crushing 10 effect their mechanical lil"Fa
tion or. they may consist IN rki ot iron compound
: having a small degree of m.gnotic susceptible!
, than the pare magnrtnr. The separation oi IN
q ,u.idings frnri The delivered 10 f'r SO
i ond drum NAV he effected In two wav' :
= Tie drums have IA, speed III rotation
weaker magnetism in tie second mssnct VIII ALLOW
u these l,,, magnetic particle, 10 drop away ar.
j; The magnet, have approximately the same force y
t. the two drums. higher .prrt ot rotation of IN
,rcond drum sill throw those particles OIL By rcu,O
" tl centrifugal force ov'rpowcring the c'nirpoa
y, ma"nctc attraction. III" magnet having the smaci
+ Influence upon the lcsncr portions If tie mass
Mmi.lra lions Of this apparatus have been d"
V signed which adapt It. for in conjunction with
=, stream Of water minclcd with the constitution
i a wet prncc>s.
c In designing this apparatus. II has been as.umc
II thai, in order 10 separate effectively mass II com
mingled ore and gangle. containing large per'entag