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

numbered /, 9. and 4. and the gas 70 ~ p",in
Of course become foul i"s Srs Is receives the
gas. II test Of gas which has passed through ~" cu1
out and 10 brought into INC gas would then
rSuTh Nos and s n resaess To-
the third Of the series when the ioanS OF 40 .n nAIe
yos to ps's 10 ' be tsus I
nnt II is needed but otherwise the procedure Is -
have described. ,,, oc
c.s.on TO 70 into tho purier house together aug w'e
there the superintendent tried thc gas: EG."Hs and
es aHns sar s%ns out e.
as s q tie ssse sss ' ers sp i @ Oh
or the escape Of the air. and not screwed on until s as
beon expelled Tic thing had been done IN the
x sts. Or Ssles e: he
ss, ea Sss, up S ssSs 4Ss sas
cAnted to one side allowing cop'cus escape Q! gas
building TOOK fire. a9d hs '1 sSs sSSss Id
ssy save. fss ssiS
da was rs slight e. 0Ss es ses9 ~
Of Of gas ."' and cir In the box; but how was
s .xp tn s: ss' h.. s;S a.:sa s
hydraulic main, two scr,lhbers: more than 500 ieet
% gs and % W.; pse.a ss.ss fssn cot
requires violent stretch Of the imaeination 70 BE-
that could rsys 90 M under Der &c conn., shc
more than warm. The tops Of the boxes are always
s ns tho e asfs y. @e
cause 81 this accident and concentrating ourseiSes
s, "as rd a'o Of the series IN EXPLODED nnds
eSsI se:sSes the oc eS pecty
THINGS LOOKING SERIOUS
| Matters were getting serious. No one had been
hurt but 1t was not impossible that the thing would
happen finder conditions which could not fail 70 XIII
| somebody. must hnd out what was wrong and
correct 1t. So called In all the experts could
reach. Some were honest enough. after looking tho
plant over to confess that they had no explanation
to Offer Others gave reasons which would
havc been satisfactory had they no.
been at variance with tho facts. For
the information Of those who may be disposed 10
speculate as to why these boxes exploded ! may say
I. The hydraulic main Is modelled aief ''c oe''
Tie scruSScs. are adequately supplied With } TatsT.
on auaS on to contan les than niue Fer cent
T sna I'd nst ss il sfHs
ppiosiSss Il vas found e b - So I'D,
/ s. There vas no IRE in the puriher'heuse and no
SINCE these two explosions which occurred 10 April
last We have had 10 trouble o tho T s p mas o1e or we
can discover no way to improve IL.
it would have boon great Satisfaction TO have been
able IN these instances TO follow the sage NNTo ~
IIorspur md out Of the netle danger pluck the
5ss y; sss:a
perhaps of no value, however, than tho honest
doubts am now willing to confess.
After Mr. Baylcs had finished the reading Of
his paper all opportunity was given for discussion
r. II. Morton, Of Portland. Ore. suggested that
the cause of the peculiar localization Of these
explosions might be duo to the well-known prin-
cipie stated in Atkinson's textbook on gases
| namely that either too small or too great
| proportion of combustibe gas in a mixture pre-
vented an explosion. The fact that some OF MI
Bayles's explosions extended no further than they
did might be due TO this.
PRESENTING orHER PAPERS.
In presenting the papers on the magnetic treat
mont OF ore. Dr. Raymond said that the conccn-
tration of iron ore by means Of its magnetic prop
critics had been brought to practical SINCE
There were several magnetic concentrations al
ready in the field two or three OF which had
been developed by members OF the Institute Al
least two of the papers, lie said, Inquired Things
down to a commercial basis OF dollars and cents
: A notable example Of the magnetic treatment OF
ores was presented at the Tllly Foster mine
which the Institute had been invitci
to visit. This mine was also ln'ereSun:
as being fire example of the modern method
!
/ granite having been removed 70 lay the ore bare
10 Tie light at this place. The Michigamme mine
was another example nf successful magnetic
u<,ment A recent note received by him from
MIR. Fowic, the author of one OF the papers pre-
sented at this session. stated that during the month
of August 3,ll6 tons of ore had been magnetic
ally concentrated at the Mchisanlme mine at v
cost Of =. cents IL ton. The Monarch Magnetic
Ore Separator was on exhibition at this session
and the members had been invited 10 visit the
Carter Ore Separator Works at ST. james Place
Brooklyn.
on MAGNETIC CONCENTRATIONS.
Magnetic Concentration at the Michigammt
Iron Mine, Lake Superior WAS the title of a
paper By john c. Fowc, OF Michigamnc, Michigan
The paper was in substance as follows:
Having had for many Yeas the n,ai.ecucnt OF mag
nettc uIines and having hoed the various adlA'nier
such JASPER grcen rock' actinoite. &c. ,iia
orc 20 diincSt rs well Is expensive 70 s1 ~ h.Ad
studied tho different WAYS OF mechanical sorting. ba'
per hour aud the low grade OF ore proa" ",i[
6o discovered ultimately for soneenrtta,s .mn tn,
small M,elc.n SssaH nas ss SUPERIOR 's : n
to Separate it from pile larger and richer lump, b.
placing in ali the shaft -houses screens OF round ro
dumped as they were hoisted; the coarse ore ,goin
info one stock pile into cars, ana lne small orc
from two or three inches III diameter down to powder
going into special stock pile 70 ne treated - 800
as some proper means vas found to separate the Or
|, | from the ROCK and other Impurities.
wei concenii aiio WI. the right prorc,, fer Us am
/, finally studied The magnet process Not hinWii,
| of auv tui'iitrF "1EN
handle large pieces of orc A. "irnci 10 rcat'
looked abroad aa0 found III sweden t.ic "ciist;"i
/, separator. One Ut ticso machines wac DroufAt
the United States AMI tested In NcwJcrscy AM olll
|, places. This original separator, hrv."g i'nrh ia
az drum | br,Ielt to tic Mic!ip dn.Ec inilc,, and
no Oh. having confidence III It. placed !, In operate
al nv own expense. Finding tlAt In TIL, WAY hrs
ore could he treated nich better by magnetic cprtt
thai by hand und with mack icttxr enrichment OF 81,
product, | put up srlsil. crIdc lh.n WA -c\tsd
sfrr, Of screens, so 10 SIZE tnr Ea:;r.al an
treat on the separator tl different size, by :cn"!vc'
TN, gave a still better p"ort. None but III" ID me
separator wa, Used. Ne siLipct from IL. E } co
tons OF concentrates in sr lat Ui which. y. Wticc
from Grade 80 prs cent orc, 'ontonnd 90 per c"t
iron, while the IrnLnder produced from Grade or
running So to - pet cent. carried 80 por cent ron
| In veN of this Satisfactory rrsuN In the soplratU