US1174730A - Metallizing process and apparatus. - Google Patents

Description

j A, G. JONES.

M ETALL IZ IN G PROCESS ANnAPPARATus. APPUCATIONJHLED MAR. 26, 19I4. RENEWED JAN. 20. 1916.

Patented Mar. 7, 1916.

2 SHEETR-SHEET 1.

Patented Mar r 1916 ZSHEE AUW/ all: m r V 'l/ A. G.-JONES. L I A 1Q m zTALpzmPaogEss AND APPARATUS. A

o; PATTENTE? momoam, ,EQSSIGNGE to NEW Emmy;

Miriam, A GORPQRATEOM ma Pittomtmit 3?,

827,359. :Ztenewofi January 26,1916}. Serial No. WAYS I ma pass through tho tio-oxid'izing-ohmnher without vaporizing, or which may cool ,to a liquid in the Clo-oxidizing chamber, will coatesoo in pools or gtobutos, and may run together and, be recovered at bottom of the de-oXictizing-ohambor.

The accompanying drawings illustrate oppamtns adaptecl to the, practico of the lIIlPlYOVQd wooossu t In the flmWingsw-Figum troprosonts an. devotional View, partly in motion, the proforredappmatus for practising; the proo ass; and Fig. Q roprosents onon'iargod "flirt-i! ycztlsoctional' View of the'fits-oxidizing-ohamboremployet. v In the construction illustrated, A. room c1 sonts bydooxidizing'chamber; B a, 50m

denser; (La pump; and D, a, gasomteiv The dooxidizing-chamber A, protorstbiy is of circular form and provided with a basoportion 1 surmounted by a dome 2."

he llc an At the: junction of the base-portion and domoportion is a bustle-pipe or {monitor flue 3 with which tho interiol" oft-11o chamber communicates through passages 8'. j flue 3* leakis from the b'ustte-pipo 3 to the hoondonwr- B. k

The 'ba swportiorr 1 is provided with the interior odownwardly-oonve1'gout frustoconical surface "1- attho lower (and of which shown in tho'fo'rm of a slide, which may be ohyclrwulioally actuated The slide 4t is providedt with chambers: or passagos 4: and 49 do which are afiapte. to oisohm'ge tho solid materials through lateral. openings 5 in the Base -patien 1. IA shallow collecting-shank be! 6 below tho slide tinay serve to collect any fllfict metals tand discharge the same throughttit pipe 6 The up vidod Witho hopper "2' fitted with a slido or closure 8; Below the closure 8 is a twyer moi" twyors 9 provided with air-regulatmg means 9. WVater-Coi1s 10 may too used at the neck portion oftho de-oXidizing-ohamher for ,ooolingf purposes. t o "Ihoconfienser 1B r z myoompriso an inclined waiter-cooled. chamber, Ehown; A draw-off pipe lloonnoctsqtho lofwort "the oomienser B Withtho tank 12, this" 18 leadsJfrom the opperportion of the con denser to the pump, from which a pipe 14:

leads to the gasometer Du In thepratice of tho process,

charges of to a tank or container 6. or end; of the chamber A715, pro- A. so

is provided a discharge-device in, which 13 Sllflfl, the gases may pass j device t ore and fuel are from time to time introduced through-the hopper 7, the closure 8 being withdrawn to permit this operation, and then closed. The fuel is preferably mainly inthe form of large lumps or blocks ad'apted to' and fuel.

as heavy as the ore and of many times the volume of the ore. Forillustration, the ore space or isolate the ore-portions envelop themv I w1th SOlld carbonaceous and fuel may be fixed in, the proportions of- 250 pounds of ore, 400 pounds of coke, and

. 100 pounds of bituminous coal, the volume {of thefuel thus ume of the'ore. practically full, fresh charges. ofore and fuel beingintroduced from time to time.

' In Fig. 2, the dotted lines may indicatethe upper conical fuel body. The operation is carried onunder conditions to produce a hot zone atthe upper portion of the ore body, sufficient air being supplied through the twyers Qto effect this result. -Carbon dioxid is formed in the upper zone, and this changes to adeoxidizing gas a short distance below the up I per; end of the chamber. A ranging upwardly above 2000? able in the upper portion of the de-oxidizing-chamber, and the temperature falls as the lower portion of the de-oxidizing chamer is approached. The tie-oxidizing gases are drawn through the flue 3 and through the condenser B, where the zinc and lead are condensed to form a bath which runs into the collecting-tanklQ. The

gaseous-fuel then passes through the-pump L to the gasometer, where it is available for any desired use.

It is desirable to employ I a de-oxidizingfchamber which will cause the mixture of fuel and ore to a-ssume'the condition of Ia relatively-low stack so that the gases may be drawn readily through t' e mixture with out; the expenditure, of great If defrom the. con- I ense'r B through a relatively high stack 16, as indicated by dotted lines in Fig. '1, the stack 16 then takingthe place of the pump and gasoineter; In such case, the operation I power.

I the gases throughthe low stack of fuel and ore. above the outlets 3 "The unused coke and the gangue in solidform settle down through the converging 7 lower portion of the chamber A, and theoperated from time to time to discharge portions of the gangueandeoke through the openingsb. Anymetals which ,may be cooled or condensed in the lower portion of the chamber A will collect in small pools or globules on the solidfueland may run together-in the depression 6 and 3 pass to the collecting-tank 6". Any metals The fuelis preferably several times being many times the vol The chamber A is kept surface of the ore and temperature F. is des1r- I ing reduction;

pass

I instance, is volatilized as an oxid or as a on by natural-draft, owing". b

tothe fact that but little "pressure is re The foregoing which may become ,frozen will be discharged with the coke and gan'gue through. the openings 5. The coke may be separated and used again, sothat any metal globules which may adhere will, in" the next passage through the ol1amber.A-,ibefused and vaporized, or fusedandcoalescjed with other 'rnetal particles and collectedfat-xfthe bottom of the ddoxidi'zingfchamberf II I I .lnplace of'cokeandficoal, charcoal and- -wood-ma' y beemployed 'as fuel, in which. case the volume of fuel, as compared with thefv'oluzne of ore, will be disproportion; ately greater. .The' woodmay be 16 inch cord wood, or slab-Wood, and fresh charcoal Will be continuously formed in the operation to replenish consumed. i I t ,It may be noted that the relatively small amountof coal orwood which is employed from time to time to replenish the coke or 'charcoal furnishes hvdrocarbons which aid in the reducing. action; The temperature. I should not be so high as to effect any general fusing of the slag constituents of the ore, and the use of so large an excess of I solid fuelaids in preventing the formation of a bath as well as serving to envelop or isolate the ore-portions which are undergo A furnace having a diameter at the bustle-line of 20'feetpreferably has a height above the bustle-line of, approximately 10 feet. The air-twyers 9 maybe of a d-iameter of20 inches, in which case six or eight lawyers-should furnish ample air. I

' In some cases, it maybe desirable to employ blocks of resistant material, such as silica-b'oulders, together with sufficient fuel to effect the de-oxidizing and vaporizing action. In such case, the refractory stones would serve as spacers, and if coke or charcoal we're'used in connection therewith, this fuel would also afford spacers.

It is to be noted that Whether the zinc, for

metal-a question about which there has been difference of opinion-;the desired result cun'nevertheless be'attairied, since there will in any case be a'metal vapor whichcan e condensed.

detailed description has been given for clearness of understanding only, and no unnecessary limitation should be understood therefrom, butthe appended claims should be nonstrued as broadly as permissible in-view of the prior art. I

What Iregard as new and desire to secure by Letters "Patent is- 1..The process of recovering from ores metals having a comparatively low volatilizing point, whichconsists in subjecting, in a ole-oxidizing chamber, a slowly-settling chargeof ore mixed with lump fuel of several times its volume sufficient to maintain the charcoal which is a ingxa temperatur a bath of the gangue, maintainin matinee Pro v e 'sufiicient to efiect -de oxi dation and vaporization,

oz'ridiaihgl cond tions, passing the e-oxidiz- "ingiigas and inetallvapor through a con denser in which the I are=ma1nta1nedand the values dc-oxidizing conditions recovered in from time to metallicjform, and removing,

time,-'portions of theunconsumed fuel and theffgangue in solid form fromthe) lower portion of the de-oxidizing chamber.

v2. The process of; recovering metals havi lumps of several times and serving to practically down draft limited airsupply ing a low volatilizin'g poinig {which consists in highlyiheatin in a de-oxidizing chamber, amixture o ore'and infusible spacing the volume of ore,

isolate the ore the chamber "a and producportions, maintaining in,

ingde-oxidizing gas and a volatilizing temperature sufiicient to volatilize the most of themetal, but without forming a bath of the earthy constituents of the ore, passing the de-oxidizing gases and metal vapor through i a chamber in which tie-oxidizing conditions are maintainedand the values recovered inmetallic form, removing from time to, time from the lower portion of the tie-oxidizing chamber the spacing-lumps and the angue in solid form, and collecting at the 'ottom chamber any metals which may be coole in thelower portion of largepieces and or envelop the ore-lump the de-oXid-izing chamber. 1

3. The process of recovering metals which. have a low volatilizing point, which consists in subjecting, in a de-oxidizing chamber, a low pile of ore mixed with several times its volume of coke or charcoahiwhich is mainly in serves practically to isolate groups, to a downdraft limited air-supply and producing a de-oxidizing aid volatilizing'temperature, a de-oxidizing atmosphere being maintained 7 th ore-groupsyin substantial isolation Ito a limited down-diaftair supply and" i 0 without producing; the den j in the tie-oxidizing chamber," passing the de- "oxidizing gas and metal vapors through a from time to time,

ofthe tie-oxidizing chamber, and recharging the recovered fuel with a freshYore-char e and suiiicient fresh fuel to maintain t e proportioris again into the chamber. r

de-okidizing I p 5s 4. In ore-reducing apparatus adapted to- V e fuel, and the the recovery of metals having a low volatilizing point, the combination of a de-oxidizmeans for intro-.

point, the, combination of a de-oxidizmg chamber adapted to maintain a char e of ore and fuel ina ing ore and fuel into said chamber, means limited quantity to the upper portion of said chamber, a condenser communicating 'with the intermediate portion of said chamber; means for gases through said condenser discharging the unconsume fuel and the gangue in solid formirom the bottom of the tie-oxidizing chamber.

ALBERTG. JONES.

the upper portion of In presence oft I NELLIE B. Dnannonn, DAISY C. THORSEN.

low stack, means for c iarg for admitting air in I drawing the de-oxidizing and means for

Images