Albuquerque weekly citizen. (Albuquerque, N.M.) 1891-19??, 1906-12-22
MODERN METH
obs Of SMEL1-
ING ORES
Smelling 10 Sllvor.Lead Bul.
liOn.-To Copper Matte.
Compromise Smelling.


smelling n consists ln aubioctinn
ores mixed with uniiahie fuses 10 the
action Of Intense beat. whereby ~
materials hocomf naid. enc eangus
of the ore combating with tho 0useu
90 form a usualiy worthless nlaa ot
acofia, while the valuable portions
cpmblno toFolhcr 90 form an giioy
or matte, The separation taking place
while the materials are ln the molten
condition hy difference ia their sprri
1c eravity
smelling ia performed either IN
blaaf furnace wheer fhe fuel lcnke Or
cia HaO is mixed with the ores AMI
nnkNs. or in rovcfhcrolofy furnaces
where q - burned IA q separate nro
box.
smelling. aa We viii coasldor A. fe
latcs tO Che treatment 0i gold silver
copper and lead ORES IN blast fur.
nnccs and q is covered by the follow.
Ing notifications
!. Smelling 90 silvorlcad bullion
2. Smelling tu coppCf.mntte in the
case OF copper suirhide, or 10 black
copper should the ores bo oxides Aad
carhonates.
B. Compromise smelling.
4. lronmaiio smelling
The processes rro. ln measure.
lEncuus concentration. The separation
of the worthless ganruo from thc
valuable I0ftiOn of the ore hy 9xlda.
tl0a and reduction On thn presence OF
heat aided BY suitable huxos. and
taking advantage ~ fhe difference
in specific Grayltg of the matoriala.
For smelling. We must have ores
(0r d mlxturo' ol suitable competition.
aud for its aucco0llu unHt1tlon
suficifnt percentage or lead. copper
or iron wyrltes must hc present
Ordinarily. for lead amoliing The
charen should eontaiu ffum ia 60 iB
por cent of lcad. and Tor matte smalt
Ing not loss ihnn 3 per cent of matte
should Boz produced
Lars mnltlnE companies bay ores
of all kinds uYea those coutainlnH
neither lcad uUl copper aiiprWnfd
combining them with copper uf lcaB
Urcg. aa thr case mny hp In such prO
p1rilon Hs fo produce "a charge con
iainins iho pfupef amount 0f eopD
or lead
Often ores 20 BE- amclted are nFeyi
Ou6ly roasted iu order 60 minimize.
and therefore conc nitrate aH much
az possible fhe matter production
Ia "nyritc' smelling no prefluus
roasting is performed.
Tho Stag produced Ia smelling con-
nigis. l0 the extent of about 90 per
cent. Of silica. ferrous oxide aud liIHe
the other 90 per cent being alumlun
u viii thus be- seen that for amcltlue
not only d proper percentage pi lead
or copper must he present. bat also
silica. iron aud lino.
AZ the metal or their compounds ip
b. recovered usually have a quafiH
ghugup limestone ana iron ore are
usually the fnxca required and they
should hc found in locality eontrn-
ielt 90 the amelief.
The fuel used ia blast furnaces ~
cohe. charcoal or q miEiuro uf thr
two, in nmUnhia equal 90 about one
sixth ol the weight 0i The ore md
liuxes; IN feYefhoraiogles wood coal
gas or oil ls used.
All ores o. copper nf lead can hr
Hmcliod, sud when they cOnialu ton
low a percentage 0f those menlH lp
ho amoltd directly they can Dee
brought up lo the standard Uf smelt
ing ores by previous concentration
Ores containing amy considerable
quantity of sulphur should be pre-
Ously roasted. az they will then fe
qulre less ir0h Hay and ihg eap-
ut tho furnace viii he corresponding
lY Increased. Such ores can he gOast
ga without previous cushing in
heaps. stalls oF kiinB ut small fH
penso. after which they can bo salts
fact0rily amnliod Tho otide anil
guiphldoH react uuon each other in
the furnace with the production of
metallic c0pplr or load and sulphur
ous acid gas
Success ln smelling iauslde ~
smelling carbonate Of lead ald cos
pogl depends urga proper mi4iuro
of nres. proper roasting nAd adiua
ment uf luKes The mfro presence
of a little galena in 4 camp o. not
sufficient i0 Justify mo erection uf
snoiiing plant Fur Fu0d results.
mixture OF ores is usually needed
hlEh Efade silver and gold oros io
hrlug un che value Uf the bullion
ores with lime e1nrua % nUufnalitf
ores in QuariH 10 aH 90 avoid lf
possible melting bufftn inNra reason.
able transportation tH marriott of hu'
hgn chtap fuel dsd mnny smaller
considerations. important in induonc-
Ing commercial fcauita
The cost nf smelling Varies grrailY
according in TIE character 0j ihe eve
sit1 of the hsaact arfangemtut %.
callty. etc
ameh|na practically saves a'l iho
gold 03 pes cent uf ihe silver HIH lN
nor cent uf lhf lead ur copper
Blast furnace siaFs % noe usnallF
cunlala more than tlfcofoHrlhs 0f 2
per cent oi lpad 0f copper anl one
haN ounce uf silver io TIE too
roe type uf Stag ip make the Dff
centaRe of valuable metals coHiHinea
therein d more of commercial thHn
a mtttiiufeiral problem