US1026578A

US1026578A - Pulp-agitator.

Info

Publication number: US1026578A
Application number: US65448811A
Authority: US
Inventors: William Hammond
Original assignee: HAMMOND IRON WORKS
Current assignee: HAMMOND IRON WORKS
Priority date: 1911-10-18
Filing date: 1911-10-18
Publication date: 1912-05-14
Anticipated expiration: 1929-05-14

Description

W. HAMMOND.

PULP AGITATOR.

APPLICATION FILED 00T.13, 1911. 1,026,578. Patented May 14, 1912.

2 SHEETS-SHEET l.

wibneooeo 6] How 10,1

W. HAMMOND.

PULP AGITATOR.

APPLICATION FILED OOT.13, 1911.

Patented May 14, 1912.

SHEET 2.

2 SHEETS- form a part ofthis specification;

\ ticles of material from each other, whereby the aforesaid patents, and hence the condischarged at the top of the tank, thus formof the tank is introduced through the in- NI D STATES I PATENT QFFIQE mom, or wmnn, rannsnvmrmnssrenoa r0 men men wonxs, or wnmm, rmmvnman conromrmn or rmmvnma.

" rimr-neruroa 1,026,578. Wcm w mm Pneumonia 14, 1912.

- Animation fled emu: 13,1911. Serial Io. cum. I

To all whom itmay concern: V f It is assumed that the is ori ally Be it known that .1, WILLIAM Humour),

a citizen of the United States, residing at Warren, county of Warren, and State of Pennsylvania, have invented certain new and useful Improvements in Pulp-Agita-' tors; and I do declarethe following tote" a full, clear, and exact description of the invention,'such as will enable others-skilled in the art to which it appertainsto .nrake and use'the same, reference being bad to'the accompanying drawings, and to the characters of reference marked thereon, which My invention relates tprimprovements iu pulp agitators of theclass set forthinPatents Nos. 923,571, 940,612 and 1,000,689, being dated June 1st, 1909, November 16, 1909, and August 15, 1911, respectively. 7

My present improvement relates more er; ticularly'to what I term cross agitatibhj don sisting in delivering jets of liquid into the pulp as it issues from the top of the stand; pipe, and also delivering jets of liquid-into the pul from the standpipe at intermediate points etween its upper and lower extremities w! 'aonisob tained, the same extending over the entire cross sectional area of the agitation tank and servingto thoroughly separate the parthe metallic values are brought into such 'intimate relation with the dissolving solution, as a solution ofcyanid of potassium, that an ideal result of the character sought is obtained. In other respects, the operation of the a paratus is substantially the same, at least m a general way, as set forth in struction and operation of the entire apparatus will not be set forth in this application in extreme detail. 4

The apparatus, in its entirety, consists of ended standpipe, intowhich-the pulp drawn from an annular chamber in the upper part strumentality of a rotary pum or other suitable means, the pulp so intro uced being ing, m a general way, a circulation of the filled from the top or otherwise and at the agitation of the charge, where the tank is used as asingle umt, is cuntinued amtif have been the precious metallic cvalfies thoroughly dissolved, after which the solid "matter is allowed to settle in the bottom of the tank, the clear solutionfconta' the. fnetalhc values bein'g drawn off, the said 'valuesbeing subsequently separated from 5 thedissolving solution by any suitable form' of precipitation. This step, however, does not concern the present invention, which relates pprel V to featuresionproducingamore tofore indicate and to this en there is arranged above the top of the stand ipe a perforated section of pipe preferaby arranged in the form of a'horizontal coil,

,which' is connected b means of a pipe extending outside of e tank with the conduit through whichjhe pulp isscarried t6 A the lower extremity of the standpipe, the outside pipe beihg elatiizely small and controlled by a valve, whereby only a comparaso -tively small portion of the pulp or solution Ts'delivered to the perforated coil in the upper partof the tank. Sprays or jets of ='quid from this perforated pipe are delivered into the ulp as it issues from the top of the stan pipe and is carried outwardly in all directions 111 sheeted form, due

"to the location of abaflle platedirectl-y above. 7 c

due to the fact that movable sections of the standpipe are in their lowermost position, whereby the said sections are in actual contact with each other.

cured in each case to the upper or movable section of the standpipe, the rings being so connected with the lower section that the rings may move with the upper section, while the lower section remains stationary a. joint between the adjacent pulp lengthwise of the tank, or in a vertical direction.

thus ope sections ot the standpipe, which is in regis- Inter- 90 from the top of the standpipe, the 95 These rings are seter with exit openings formed in the said whereby, as soon as the section or sections of the standpipe are raised to their limit of movement, ets of solution will issue from the standpipe intermediate its extremities for the purpose aforesaid.

Having briefly outlined my improved construction, ,1 W111 proceed to describe the same in detail, reference beinglmade to the accompanyin drawing "in w ich is illustrated an e diment t ereof.

.In this drawing :-Figure 1 is a vertical section, taken through an agitating apparatus equip ed with my lmprovements.

iE Fig;\2\iS as agmentary vertical section of the standpipe, taken through one of the joints formed for the purposeofmtreducmg intermediate sprays or jets of solution from Atandpme intermediate its extremities.

go In this view, the uppersectiomof the pipe we; as r -Fview, showing the joint in 1ts normal POSI- has been raised to .open communication between the interior of the pipe and openings formed in a surrounding ring, the parts being shownon a scale greatly enlarged as compared with FigrLnF i 3'isn mslm lar tion, or with the two pipe sections in actual contact, whereby the openings or passages in the said ring are closed or cut oii from communication with the interior of the pipe. Fig. 4 is a cross section of the pipe, taken on the line fr-4: of Fig. 2, looking downwardly. e refemence characters indicate the same parts in all the views. 7 4

Let the numeral 5 desigf :a I a ight cylindrical tank, whose lower portion is cone-shaped, as shown at 6, the cone-shaped part being surrounded by a casing 7 which is a continuation of the body of the tank above the cone-shaped bottom.

Centrally arranged and suspended within ,the tank is a standpipe 8, the suspension being accomplished by means of horizon-r ,.tally=arranged "braces 9 connecting the wall of the tank with a ring 10, with which the standpipe is equipped, and inclined braces 12, which are connected with the pipe ring 10 at their lower extremities and with an angle bracket 13 at their upper extremities, the angle bracket bein secured to the wall of the tank on the insi e. These suspension braces or

rods

9 and 12 are provided with turn buckles 14, whereby they may be adjusted to produce the required result. The top of the standpipe is further supported by means of screws 15, which are threaded in a cross bar '16, extending across the top. of

the tank and reinforced by a plate 17, in which is also threaded a screw 18, whose lower extremity is equipped with abaflie plate 19 located a short distance above the top of the standpipe. While these screws serve to suspend the standpipe in its into the contents 0 the tan-1r intermediate the extremities of the standpipe. For this purpose, relatively heav'y' rmgs v21 are Socured to the movable sections 20 by rivets 22,- or other suitable fastening devices. In the case of the uppermost section 20, the ring 21 is connected with the lowermost section 20 by means of pins 23, which are made fast to the lower pipe section 20, as

through slots 25 formed in the lower portion gether with the uppermost section 20, may be lifted the lengt of the slots 25 without jets, whereby the said" jetshave suiiicient force to act upon the pulp over the entire fiuencing the material falling through the gangue and bringing the dissolving solution of cyanid of potassium into such intimate values are quickly dissolved. Now, if it is desired to introduce these cross jets or at more than one zone, after the uppermost between the two' sections 20 of the standpipe for the purpose aforesaid, the operation will be continued by imparting a further elevation to the uppermost section 20, in which 21 are in .the bottom of the slots 25, the lowermost section 20, or the section 20 next below the uppermost section, will be lifted until a space 26 is formed between what may the stationary portion 28 of the standpipe below, assuming that the standpipe is equipped with only two movable sections 20. The result will be that the second section 20,

length of the slots 25 through which the pins 23 pass, thus opening a space between ary section of the pipe and allowing thethe tank through the passages 27 with the result heretofore stated. From this, it'will be understood that the standpipe may be proper central position within the tank, they also are adapted to adjust the movable secprovided with one or more movable sections,

tions 20 of thestandpip'e for the purpose of introducing cross s rays or -,jets of liquid shown at 24, the said pins protruding.

the secondsection 20 and the lower stationof the ring 21, whereby the ring 21, to

moving the lowermost s ectionflQmrThisliit properly control the direction of the issuing cross sectional area of the tank, thus inliquid ..of the tankand p w lg gfiect separation of the metallic values rom the x contact with the metallic values that the said sprays of li'qfiidin'to-the-pulpsf thetankmnd section 20 has been raised to open a space 26 event, as the pins 23 of the uppermost ring be termed the second movable section 20 and 11 together with its ring 21, will be lifted the liquid to pass from the pipe outwardly into the normal position of the sections being 'with theinterior of the pose ofcross agitation. w

The elevation-of the pipe sections for such that the openings or passages 27 are closed, it being practicable, however, to place these passages in communication with the. mteriorof the pipe by the vertical-move ment first of the uppermost movable section,

and finally of the section next below, and so on until the desired numberof series of jet openings 27 is placed in communication pipe, for .thepurthe purpose aforesaid, may be accomplished by adjusting the screws 15, heretofore described, the lower extremities of the screws being journaled in ears or'lugs 29, secured to the 'uppermost1section20 for the purpose.

- It will be understood that as these screws are turned in the proper direction, the up-. permo'st movable section 20 will be lifted until .the pins '23 reach the bottom ofthe slots 25. ;Then, if the screws are further turned, the second movable section 20 of the standpipe will be raised until the bottoms of the slots 25 e a e'the pins 23 of the ring 21 next below. movable sections 20 .will be so adjusted as to permit the issuing-of jets or sprays'ofliquid from the standpipe into the'surrounding contents of the tank for purposes of additional or cross agitation, as heretofore explained. i a

As illustrated -in the drawing, the uppei: part of the tank is rovided with an mterior cylindrical partltion 30, which at the I the bottom, it is supported upon the angle top is secured to the cross bar 16, while at brackets 13. This partition 30 forms an annular chamber .31, between the upper ortion of the wall of the tank .and the sai partition, this annular chamber 31 forming a a quiet or undisturbed compartmentfor what off through a pipe 32, which extends first may be termed the clear solution,.from which compartment the said solution may be drawn outwardly from the tank and then downwardly, communicating with a rotary pump 33, from which the solution is discharged through a pipe 34 into the bottom of the standpipe 8, the inner. extremit. of the pipe 34 beingupturned and protru ing into the lower open extremity of the standpipe, as shown at 35. This solution, during the operation of the apparatus, is carried up- 'wardly through the standpipe and discharged at the top thereof, or, more properly speaking, results in producing a circulation of the contents of the tank upwardly through the standpipe and downwardly through the tank in a continuous circuit, the contents of the tank being drawn into the lower extremity of the standpipe and carried upwardly therethrough under'the influence .of the suction resulting from the discharge of the pipe 34 into the lower extremity of the standpipe. At the sametime that heretofore explained.

en this is, done, the two "the solution is circulating the stand intermediately located sprays or jets 5 w I be Issu ng from the standpipe at one or more zones, depending upon t of the movable sections of the'standpipe, as

tankvand-between the tank and the centrifugal pump 33, is an upwardly extending relativelysmall pi 36, whose uppercxtremity communicates way of a horizontal part 37 and a depen ing part 38 with a circular perforated pipe 39, arranged in a horizontal roximately in the 7 plane just above or same plane with the ba plate 19.

B virtue of this .construction, a portion pumpand delivered to. the pipe34 is'carried e adjustment Ccnnected with the pipe 34, outside of the 'of e solution issuing from the centrifugal upwardly through the pipe 36 and delivered -to;;the perforated" pipe 39 from which it issuesin-the form of sprays or jets i-nto the 'sheet'of solution issuing from the top of the standpi-pe; and thrown in all directions by the baflie plate 19. Thesespra s or jets produce further cross agitation of t e contents of the tank, when taken in connection with the in termediate sprays or jets, producing perfect said patents, and heretofore described somewhat in detail, it is evident that the novel feature of producing cross agitation by the employment of sprays or jets of solution issuing from astandpipe intermediate its extremities and from a perforated pipe suspended in the upper part of the tank, either or both may be employed in connection with any agitating tank. having a standpipe through which a circulation of. solution is maintained by the introduction of solution at the lower extremity of the standpipe and causing it to discharge at the upper extremity thereof.

Connected with the top of the pipe 32 is a relatively small air pipe 41, whose upper extremity is open whereby,as the solution is drawn through the pipe 32 from the annular chamber 31, air issimultaneously introduced to the solution by the resulting suction. This air pipe is providedwith a valve 42, whereby the passage of air therethrough may be controlled.

The lower portion of the pipe 32 is connected with a branch pipe 43, provided with a valve 44. The dissolving solution, also the pul to be treated, may be introduced to the ta through this pipe. In order to do this, it will only be necessary to open the valve 44 and start the pump 33 in motion. In thisevent, the valve 40 would be closed. After the treatment of a charge of pulp is completed, and the solid material has settled in the cone-shaped bottom 6 of the tank,

this solid material may be removed through an outlet pipe 45 controlled by a valve 46.

Having thus described my invention, what -I claim is 1. Ina pulp agitator, the combination with a pulp-containing tank having an open- "the pipe, whereby the circulation of the pulp through the tank and pipe is estab-' lished, a ring mounted upon the said epipe and having openings which are adapt to be placed in communication with the pipe,

for the purpose set forth.

3. In a pulp agitator, the combination with a pulp-containing tank, of an openended standpipe suspended in the tank and having a vertically-adjustable section, an

exteriorly located ring applied to said section and movably connected with the pipe below the section, the said ring having open- .ings normally closed whenthe movable section is in its lowermost position, and means for elevating the movable section, whereby a space is formed between the section and the part of the pipe below the section for the escape of the liquid from the pipe through the openings in the ring, substantially as described.

- 4. The combination with a pulp-contaim ing tank having an open-ended standpipe suspended therein, means for introducing liquid at the bottom of the standpipe,w-here by a circulation of the pulp is established through the tank and standpipe, the standpipe having a movable section provided at its lower extremity with a member which surrounds the adjacent part of the pipe, the said member being movable on the pipe below the movable section, the said member having pulp escape openings which are normally closed, and means for raisingthe movable pipe sect-ion whereby the said openings are placed in communication with the liquid in the standpipe, for the purpose set forth.

' 5. The combination with a pulp-containing tank havlng an open-ended stand ipe suspended therem, and means for intro ucing liquid at the bottom of .the standpipe whereby a circulation of pul through the standpipe and tank is establis ed, the standpilpe emg provided with movable sections w ereby the pipe is vertically extensible, the movable sections'having openin adapted to be brought into communication with the interior of the pipe when the sections are lifted, and suitab e means for raising the movable scribed.

6. The combination with a .pulp-contain-. ing tank, of a standpi e suspended in'said tank, means for intro ucing liquid "atthe. bottom of the i whereby a circulation ofthe pul is esta ished through the pipe and equipped with a ring secured to the lower extremity of the section and surrounding the upper extremity of the adjacent part of the pipe, the said ring being connected with the upper extremity of the adjacent por: tion of the pipe to allow a limited vertical movement of the movable section, the said ring having openings which are placed in communication with the pipe when the movable section is lifted, substantially as described.

7. The combination with a pulp-contain-v ing tank having an open-ended standpipe suspended therein, means for introducing liquid at the bottom of the standpipe,whereby' a circulation of pulp is established through the tank and standpipe, a per-" forated'pipe supported in the upper part of the tank adjacent the upper extremity of the standpipe, and means for introducing liquid under pressure intothe said perforated pipe, whereby jets of liquid are delivered by the perforated pi e into the material issuing from the top -0 the standpipe, the tank being provided with a plate supported above the top of the standpipe, whereby the material is deflected outwardly from the top of the pipe,-substantially as described. a a

'8. The combination'with a pulp-containing tank, of an open-ended standpipe suspended in the tank, means for introducing pipe sections, substantially as -de-.

liquid into the lower extremity of the pipe.

whereby a circulation of liquid through the tank and standpipe is produced, the standpipe being equipped with means for intro ducing jets of liquid into the surrounding pulp of the tank intermediate the extremities of the pipe, and a perforated pipe supported in the tank adjacent the top of the standpipe, and means for introducing liquid under pressure into the perforated plpe, the perforations being arranged to discharge jets downwardly 1ntothe pulp of-the tank, substantially as described.

9. In a pulp agitator, the combination with a pulp-containing tankhaving an openended sectional standpipe, and means for introducing solution into the lower extank, t e pipe having a movable sect-ion tremity of the pipe, whereby the circulation of the ulpthrough the tank and pipe is establis ed, a rin mounted upon a section of said pi e an having -openings which are adap to be laced inxor out of communicatlon with t e pipe by means' of the vertical movement of said section, substantially as described.

10. The combination with a pulp-agitating tank having an open-ended standpipe suspended therein, means for introducing liquid at the bottom of the standpi e, whereby a circulation of pulp is establis ed through the tank and" standpipe, a

.15 perforated pipe supported in the upper part of the tank ad acent the upper extremity of the standpipe, and means for introducing li uid under pressure into the ,said perforate pipe, whereby jets of liquid are delivered by the perforated pipe mto lution into t elower extremity of 'the'pipe the tank and pipe is establish and means secured to the said pi the last-named means being reinforce by a horizontal flange through which perforations extend for introducing liquid jets from the pipe into the surrounding pulp, for the purpose set forth,

In testimony whereof I afiix my signature in presence of two witnesses.

' WILLIAM HAMMOND.

' Witnesses:

Mnzon B. Srrnwm, W. R. Sonnnnmmm.

whereby the circulation of the egulp through