US212508A - Improvement in furnaces for roasting ores - Google Patents

Improvement in furnaces for roasting ores Download PDF

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US212508A
US212508A US212508DA US212508A US 212508 A US212508 A US 212508A US 212508D A US212508D A US 212508DA US 212508 A US212508 A US 212508A
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ore
cupola
pipe
stack
steam
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J8/00—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes
    • B01J8/18—Chemical or physical processes in general, conducted in the presence of fluids and solid particles; Apparatus for such processes with fluidised particles
    • B01J8/1836—Heating and cooling the reactor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/00017—Controlling the temperature
    • B01J2208/00106—Controlling the temperature by indirect heat exchange
    • B01J2208/00265—Part of all of the reactants being heated or cooled outside the reactor while recycling
    • B01J2208/00274—Part of all of the reactants being heated or cooled outside the reactor while recycling involving reactant vapours
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/00017—Controlling the temperature
    • B01J2208/00327—Controlling the temperature by direct heat exchange
    • B01J2208/00336—Controlling the temperature by direct heat exchange adding a temperature modifying medium to the reactants
    • B01J2208/00353—Non-cryogenic fluids
    • B01J2208/00371—Non-cryogenic fluids gaseous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
    • B01J2208/00—Processes carried out in the presence of solid particles; Reactors therefor
    • B01J2208/00008—Controlling the process
    • B01J2208/00017—Controlling the temperature
    • B01J2208/00504—Controlling the temperature by means of a burner

Definitions

  • the object being to secure the desired result in a more ⁇ perfect manner, in a shorter time, and with less expenditure of fuel and labor than heretofore.
  • a charge of pnlverizedore is admitted into the cupola, aud a iet or blast of air, gas, or steam is admitted at the bottom of the cupola.7 and, passing up throughthe ore, causes it to boil or play like the waters of a fountain.
  • the ore is subjected to the action oi' a forced furnace or flame blast simultaneously with such ebullitiou, the blast being admitted through a laterahopening-in ⁇ the cupola.
  • the apparatus includes novel features of construction in respect to supplying or feeding ore to the cupola and discharging it therefrom; also in respect to chioridizin g ⁇ the ore, all as hereinafter described.
  • Figure 1 is a sectional elevation ⁇ ofthe furnace.
  • y Fig. 2 represents a moditied arrangement of certain parts ofthe furnace.
  • the retort orcombustion-chamber D which is an exterior portion or attachment of the stack A, has a vertical part, forming a fuelchamber, a, into which coal or Wood is introduced by removing thef air-tight iron ycover b.
  • a funnel, c is secured in the outer end of the combustion-chamber D, and provided with an annular slide, d, for regulating the admission of atmospheric air.
  • the air jet er current' is induced by steam, which is' ejected from the nozzle of pipe E, that enters the mouth of funnel c.
  • This pipe is provided with a cock, e, for regulating the steamjet or blast.
  • the up per portion of the body of the stack or cupola the stack serves to conduct the ore into the interior of the latter, where it falls in a stream or shower while charging the furnace.
  • Said pipe G has a flexible portion, p, which is attached to pendent tube, forming part of .a pivoted gate, C, which is used for' discharging ore after treatmen t ⁇
  • the bottom of stack or cupola A is made coneshaped, to aid iu concentrating and returning theore to the action of the blast from pipe G.
  • a detlector, B is located in the upper portion of the stack A. It is composed of a conical truncated hood, and a convex cap or cover placed immediately above it.
  • the hood concentrates the ore-particles passing upward and diverts them against the cap or cover, ⁇ by which they are deflected downward and the heavier portion returned into' the body of the stack.
  • a large pipe, I' leads down to a chamber, K, where the particles of ore which may pass the decctor B' and steam-jet b', being driven by sufficient velocity against or into the water in tank k, are collected in said tank, thus-preventing any possible loss of ore.
  • the chamber K is constructed with ⁇ an in- ⁇ clined top, terminating in a? shaft or chimney,
  • the blast from the gas or steam pipe' serves to hold the charge ofore in suspension, keeping it in constant p play, like the waters of a fountain, the ore be ing forced or carried up in the center of the cupola, and falling again on the side next the wailof the cupola, and also serves to turn the amestoward the bottom of the stack, thus heating it as hot as the upper portion..
  • the particles of ore which have been carried to the y upperpart of the stack A. are turned from their upward course by the defiector B.
  • the height to which the column of ore in the cupola is raised is regulated by the force of the jet from pipe G, and that in turn obviviously depends, mainly, upon the position of valve or cock h.
  • the ore in the exterior chamber, f is heated by radiation from the stack, so that it is fed to the dame in a condition favoring desul'phuration, thereby enabling the process to be more quickly and perfectly attain ed than would be practicable if the ore were supplied at its nor-v
  • the steam and air jet may lbe so regulated as to produce 'a more or less intense combustion and heat, and thereby graduate the effect on the ore up to a perfect roast.
  • AIn chloridizing ores I introduce the salt through the pipe r into a pocket, S, formed on the bridge-wall ci' the fire-chamber D, thus subjecting the salt to the action of the dame.
  • I' do not confine myself to this method of introducin g the salt, as it may be done ip various Ways.
  • a stream of chlorine gas maybe introduced by means of the jet-pipe G, at bottom of stack A. l
  • the cupola-pipe I discharges the gases dircctly into the pipe L.
  • the latter is enlarged, and provided with aninclined bottom, so that any particles of ore that may be brought over with the gases will slide down the same, and be returned to the cupola A thronghnan opening in the side thereof, or, if that is not dcsired, will be discharged into tank K,as when the apparatus is constructed as shown in' FigJ.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Description

, L v v v f lin@ C. E. ROBINSON. Furnace for-Roasting Ore. No. 212,508.` PatentedFeb. 18,1879..
ATTUBNEYS..
UNITED STATES PATENT OEE-10E. Y
CHARLESlE. ROBINSON, OF BROOKLYN, 4NEW YORK.
IMPROVEMENT lN FURNACES FIOR` ROASTlNlG ORES.`
Specification forming part of Letters Patent No. 212,508Qdated February 18, 1879; application tiled January 17, 1878. i
To all 'whom it may concern:
Be it known that I, CHARLES E. ROBINSON, of Brooklyn, in the county of Kings and State of New York, have invented a new and Improved Process and AApparatus for Treating particularly for desulphurizin g aurfero us ores,
the object being to secure the desired result in a more`perfect manner, in a shorter time, and with less expenditure of fuel and labor than heretofore.
In carrying out the process, a charge of pnlverizedore is admitted into the cupola, aud a iet or blast of air, gas, or steam is admitted at the bottom of the cupola.7 and, passing up throughthe ore, causes it to boil or play like the waters of a fountain. The ore is subjected to the action oi' a forced furnace or flame blast simultaneously with such ebullitiou, the blast being admitted through a laterahopening-in `the cupola. When the ore-charge has been roasted a sufficient time, the steam and air and furnace-blasts are shut olf, and the oreis' allowed to discharge through asuitable oritice in the bottom of the cupola., A fresh chargeis then admitted into the cupola, and the operation is repeated.
The apparatus includes novel features of construction in respect to supplying or feeding ore to the cupola and discharging it therefrom; also in respect to chioridizin g `the ore, all as hereinafter described.
In the accompanying drawings, forming part of this specilcation, Figure 1 is a sectional elevation` ofthe furnace. y Fig. 2 represents a moditied arrangement of certain parts ofthe furnace.
'The retort orcombustion-chamber D, which is an exterior portion or attachment of the stack A, has a vertical part, forming a fuelchamber, a, into which coal or Wood is introduced by removing thef air-tight iron ycover b. A funnel, c, is secured in the outer end of the combustion-chamber D, and provided with an annular slide, d, for regulating the admission of atmospheric air. The air jet er current'is induced by steam, which is' ejected from the nozzle of pipe E, that enters the mouth of funnel c. This pipe is provided with a cock, e, for regulating the steamjet or blast.
Surrounding, or partly surrounding, .the up per portion of the body of the stack or cupola the stack, serves to conduct the ore into the interior of the latter, where it falls in a stream or shower while charging the furnace. An
air or steam jet or blast-pipe, G, connects with c,
the base of the stack A, and is provided with a valve, h', for regulating the force of the jet of air orxsteam. Said pipe G has a flexible portion, p, which is attached to pendent tube, forming part of .a pivoted gate, C, which is used for' discharging ore after treatmen t` The bottom of stack or cupola A is made coneshaped, to aid iu concentrating and returning theore to the action of the blast from pipe G.
A detlector, B, is located in the upper portion of the stack A. It is composed of a conical truncated hood, and a convex cap or cover placed immediately above it. The hood concentrates the ore-particles passing upward and diverts them against the cap or cover, `by which they are deflected downward and the heavier portion returned into' the body of the stack. i
From the top I of the cupola A a large pipe, I', leads down to a chamber, K, where the particles of ore which may pass the decctor B' and steam-jet b', being driven by sufficient velocity against or into the water in tank k, are collected in said tank, thus-preventing any possible loss of ore.
The chamber K is constructed with `an in-` clined top, terminating in a? shaft or chimney,
L, for carrying oil' the gases or vapors. If it l mal or ordinary temperature.
through it, thus carrying gases of combustion `into the cupola A, where they meet with and act on tlzepulverized ore. The blast from the gas or steam pipe' serves to hold the charge ofore in suspension, keeping it in constant p play, like the waters of a fountain, the ore be ing forced or carried up in the center of the cupola, and falling again on the side next the wailof the cupola, and also serves to turn the amestoward the bottom of the stack, thus heating it as hot as the upper portion.. The particles of ore which have been carried to the y upperpart of the stack A. are turned from their upward course by the defiector B. If any particles should escape the dcector, the small steam-jet b", at opening of pipe l, serres to drive them back, the gases escaping through the steam into the pipe I', and thence `into the tank K. 'From the chamber K the sulphurons gases pass through pipe L into the outer air.
The height to which the column of ore in the cupola is raised is regulated by the force of the jet from pipe G, and that in turn obviviously depends, mainly, upon the position of valve or cock h.
The ore in the exterior chamber, f, is heated by radiation from the stack, so that it is fed to the dame in a condition favoring desul'phuration, thereby enabling the process to be more quickly and perfectly attain ed than would be practicable if the ore were supplied at its nor-v It is obvious the steam and air jet may lbe so regulated as to produce 'a more or less intense combustion and heat, and thereby graduate the effect on the ore up to a perfect roast.
AIn chloridizing ores, I introduce the salt through the pipe r into a pocket, S, formed on the bridge-wall ci' the lire-chamber D, thus subjecting the salt to the action of the dame. I' do not confine myself to this method of introducin g the salt, as it may be done ip various Ways. A stream of chlorine gas maybe introduced by means of the jet-pipe G, at bottom of stack A. l
' When the ore is sufficiently treated it is discharged through the opening at the bottom of stack A, which opening is provided, as before stated, with a gate, C. This gate is constructed in such a manner that it turns on a pivot. and is tightened, when closed, by a handled screw, m, as shown in the drawing.
, erases Steam, air, or gas Ais introduced through the' The top of the stack is provided with a' damper, 0, or other suitable device, to be usedi. c., opened-when starting the re.
According to the modification shown in Fig.v
2, the cupola-pipe I discharges the gases dircctly into the pipe L. The latter is enlarged, and provided with aninclined bottom, so that any particles of ore that may be brought over with the gases will slide down the same, and be returned to the cupola A thronghnan opening in the side thereof, or, if that is not dcsired, will be discharged into tank K,as when the apparatus is constructed as shown in' FigJ.
I propose to apply my improved process and apparatus in treating various kinds of orcs, more especially ores of gold and silver.
I am aware it is not broadly new to subject ore to the action of a furnace-blast when in :i pulverulent condition; but heretofore the. ore has been forced through the furnace-blast in a continuons stream, so 'that there was but a momentary action and -eiiectof the flame pro- 'ducedon the ore, and hence no satisfactory result was attained.
Having thus described my invention, what I claim as new isfy 1. The process of roasting pnlverized ores, consisting in subjecting a charge of the same to the simultaneous action of a jet of flame and of a jet of air, steam,or gas introduced underneath the charge, whereby the particles of ore are kept in continual suspension and agitation durin g the whole operation, substantially as described.
2. Incombination with the cupola, the air, gas, or steam jet pipe or pipes G,'the jacket F, and the discharge-aperture g,al1 as shown and described.
3. In combination with the base of the cupola, having a discharge-aperture, the pivotcd horizontally-swinging gate C, the rigid jetpipe G, Vand flexible connecting piece p, as shown and described. f
4. The combination, with the fuel-chamber and cupola, of the salt-'pocket S `and feed-pipe r, for the purpose specified.
l cHAs; E. nonizsox.
Witnesses I. N. SMITH,
G. WAKEFIELD.
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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2612263A (en) * 1949-12-02 1952-09-30 Howard D White Apparatus for heat-treating mineral material
US2621034A (en) * 1947-07-01 1952-12-09 Great Lakes Carbon Corp Apparatus for expanding minerals
US2639132A (en) * 1948-08-13 1953-05-19 Combined Metals Reduction Comp Processing furnace for discrete solids
US2666632A (en) * 1949-10-29 1954-01-19 Kelly Perlite popping furnace
DE926606C (en) * 1943-10-05 1955-04-21 Basf Ag Method and device for roasting pyrites or other sulfur-containing materials
US2761762A (en) * 1951-03-06 1956-09-04 Basf Ag Production of gas containing sulfur dioxide
US2774661A (en) * 1951-08-07 1956-12-18 Dorr Co Method of heat-treating fines in a coarse solids fluidized bed
US2782018A (en) * 1950-06-05 1957-02-19 Combined Metals Reduction Comp Method of heat processing finely divided materials and furnace therefor
DE970903C (en) * 1950-09-10 1958-11-13 Basf Ag Process for the chlorinating roesting of sulphidic copper and zinc-containing materials mixed with rock salt or other chlorides
DE971417C (en) * 1947-07-29 1959-01-29 Cie Ind De Procedes Et D Appli Device for the continuous, chemical treatment of finely divided solids kept in a fluidized state
DE973724C (en) * 1947-10-24 1960-05-19 Wilhelm Biek Process and device for the production of building materials
DE973942C (en) * 1949-05-13 1960-07-28 Koppers Gmbh Heinrich Process for carrying out endothermic reactions between solid and gaseous substances
US2958596A (en) * 1957-08-14 1960-11-01 United States Steel Corp Method for agglomerating iron ore fines
US3632312A (en) * 1968-06-12 1972-01-04 Dorr Oliver Inc Production of high-strength sulfur dioxide

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE926606C (en) * 1943-10-05 1955-04-21 Basf Ag Method and device for roasting pyrites or other sulfur-containing materials
US2621034A (en) * 1947-07-01 1952-12-09 Great Lakes Carbon Corp Apparatus for expanding minerals
DE971417C (en) * 1947-07-29 1959-01-29 Cie Ind De Procedes Et D Appli Device for the continuous, chemical treatment of finely divided solids kept in a fluidized state
DE973724C (en) * 1947-10-24 1960-05-19 Wilhelm Biek Process and device for the production of building materials
US2639132A (en) * 1948-08-13 1953-05-19 Combined Metals Reduction Comp Processing furnace for discrete solids
DE973942C (en) * 1949-05-13 1960-07-28 Koppers Gmbh Heinrich Process for carrying out endothermic reactions between solid and gaseous substances
US2666632A (en) * 1949-10-29 1954-01-19 Kelly Perlite popping furnace
US2612263A (en) * 1949-12-02 1952-09-30 Howard D White Apparatus for heat-treating mineral material
US2782018A (en) * 1950-06-05 1957-02-19 Combined Metals Reduction Comp Method of heat processing finely divided materials and furnace therefor
DE970903C (en) * 1950-09-10 1958-11-13 Basf Ag Process for the chlorinating roesting of sulphidic copper and zinc-containing materials mixed with rock salt or other chlorides
US2761762A (en) * 1951-03-06 1956-09-04 Basf Ag Production of gas containing sulfur dioxide
US2774661A (en) * 1951-08-07 1956-12-18 Dorr Co Method of heat-treating fines in a coarse solids fluidized bed
US2958596A (en) * 1957-08-14 1960-11-01 United States Steel Corp Method for agglomerating iron ore fines
US3632312A (en) * 1968-06-12 1972-01-04 Dorr Oliver Inc Production of high-strength sulfur dioxide

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