Gold Hill daily news. [volume] (Gold Hill, N.T. [Nev.]) 1863-1882, 1876-02-04
Tho Fryer Process.
Irrou the seieutiae Press,

what Mr.. Fryer claims. we give In full
the following description, precisely rs
prepared for the specification for foreign
patents. being n little different from the
American patent in detail.
The object Of this invention is more
especially to facilitate and reduce the
cost Of extraction Of the gold and silver
which Is contained in quartz. but 1t may
also Be applied to the separation OF the
noble metals from other ores in which
they may be contained with the base
metals.
The invention consists OF a furnace
Of upright cylindrical form. which has
q double wall or shell OF boiler plate or
other iron for containing water and
steam, and a suspended invsrtible or re-
movable bottom, and has In its upper
part a cor around which the gaseous
products OF combustion in the furnace
NAV escape to a stack above. and upon
the exterior OF which is delivered water.
which falls over its edges and meets the
gaseous and volatile products escaping
from the furnace. aud condense certain
metallic and other portions oil said pro-
ducts, which fall with the said winter and
ars collected Herewith in a suitable 70.
ceptacls. while the orc ID being roasted
in the furnace by the combustion OF
wood. upon which tho said ore is
deposited therein. Air is quite freely
supplied 10 the said furnace through
an annulsr opening provided around its
removable or invsrtible bottom. for the
combustion Of tho fuel and the oxidation
Of the oxidizablo portions Of tho ore;
and this supply Of air is or may be In.
creased by the steam which is generated
by the heat OF tho interior OF tho fur.
mace from the water In its double shell.
and introduced in Jets to the stack. to
act as n blower tho water also serving
to prevent the rapid burning or o,idisa-
ton Of the inner shell or wall OF the
furnace. The suspended removable or
invsrtibls bottom serves TO permit the
rapid discharge Of tho contents OF the
furnace afior the roasting has been com.
pleted. by the roasting process in this
furnace tbs noble metals are to such al
extent separated from the mineral mat
tiers aud base metals which are oxidized
by the roasting process that their com.
plets separation may be easily effected
by pulverization aud subsequent ANAL
gamation, tho oro having been brought
to such condition by the roasting pro-
cess that its complete reduction to an
eIcesdingly fine powder Is very greatly
facilitated.
The invention, rs illustrated, repre-
sents n central vertical section vi the
furnace.
The body oil the furnace, constituting
tho furnace proper. ~ OF upright GYM
drical form. open At the top and bottom.
and suspended on or In q frame work ~
Tugs. This furnace 10 constructed OF
boiler plate or other iron. with a double
shell. Between tho shells q water and
steam space Is provided. the object OF
which is, in tho first place. to prevent
the inner shell from rapidly burning out;
and in tho second place. to provide
steam with which to supply q steam jet
blower. located in the stack above the
furnace.
The bottom Of the furnace is made in
the form Of an open vessel OF an inter
nal diameter larger than the external
diameter OF the body Of the furnace, and
constructed with a double shell having
q water space to prevent rapid oxidation
Of the interior. The said bottom is sus-
pended from the frame, by rods con.
nected Herewith by trunnions, and with
apparatus overhead, by means OF which
the said bottom may he raised and
lowered at pleasure. A doubl~shell
chamber Is situated at the top OF the
body OF b furnace, n though tho
inner shell Of which the gaseous pro-
ducts Of combustion and volatile matters
from Tho furnace pass 10 inc stack
which IL erected above said chamber
The space between tho TWO smells o !
this chamber. contains wafer: winch
prevents the burning out OF 'ho inner
shell.
A o n In located over the upper por.