US1060805A - Apparatus for hydrating lime and the like. - Google Patents

Description

WITNESS S1 s. WIEBE. 1 APPARATUS FOR HYDRATING LIME AND' THE LIKE. APPLICATION FILED JAN.15, 1910.

Patented May 6, 1913 4 sEEnTshsHEET 1.

s. WI EBE. APPARATUS FOR HYDRATING LIME AND THE LIKE.

APPLICATION FILED JAN.15,-1'9'10; 1,060,805. atented ay 6, 1913.

4 SHEETS-SHEET 2.

S. WI'EBE. APPARATUS FOR HYDRATING LIME AND THE LIKE.

KPPLIOATIQN FILED JAN.15,1910. v 1,060,805. Patented May 6, 1913 4 SHEETfi-SHEET s.

S. WIBBE. US FOR HYDRATING LIME AND THE LIKE.

APPARAT APPLICATION FILED JAN.15,1910. I

PatentedvMa y 6, 1913.

mama-5 4 sun's-5mm": 4.

WHNESSES UNITED snare rarer are SIGU'RD WIEBE, 0F BROOKLYN, NEW YORK, AQSIGNDR, BY MESNE ASSIGNMENTS, T0

M. O. HATHAWAY, 0F RICHMOND, VIRGINIA.

APPARATUS FOR HYDRATING AND THE LIKE.

Specification of Letters Patent.

Patented llllayfi, 1913.

Application filed. January 15, 1910. Serial No. 53852-31.

To ali whom it may concern:

Be it known that I, SIGURD Winnie, a subject of the Crown of Sweden, and a resident of Brooklyn, county of Kings, and State of New York, have'invented certain new and useful Improvements in Apparatus; for Hydrating Lime and the Like, of which the following is a specification, reference being had to the accompanying drawings, formin a part thereof. v

y invention relates to hydrating apparatus, and particularly to means for hydrating lime in the manufacture of mortar, cement, and silicate or sand-lime bricks, tiles, or the like.

Probably the most diiiicult problem to solve in the manufacture of mortar, cement, sand-lime bricks, and the like, is to positively complete the hydration of the lime without setting up the chemical action by which the material sets and hardens. It too little water is employed the hydration is completed after the mortar or cement has been used or the brick or tile has been formed, thereby resulting in disruption and disintegration of the product, wiile on the other hand it an excess of water is used, chemical actions are set up which result in a hardening before the proper time and at best weaken the action of the lime at the time such actionshould be strongest. It has been attempted in the past to overcome these diiiiculties by using too little water in the first portion of the process, allowing the material to partially,hydrate'in an inclosed vessel for a certain length of time, and thereafter adding suflicient water to complete the hydratiom the water being applied in the form of aspray or the like in a mixing vessel and the material thereafter used before the chemical actions above referred to have time to take place. The difliculty with this has been that the water so applied washes the fume of lime from the sand and tends to separate the sand and the lime. This, of course, is highly detrimental to good results and such a system has not proveda success in the past for the reason stated. In a copending application filed coincidently herewith and serially numbered No. 538,230 I have disclosed a process where- 'is elevated and carried to a be: completed so far as the quantity of water will carry it, and in thereafter supplying the additional moisture required in theform of an aqueous vapor such as steam; and the present application relates to the apparatus in which this process may be carried out.

In order that my invention. may be fully understood, I will now proceed to describe an embodiment thereof, having reference to the accompanying drawings illustrating the same, and will then point out the novel features in claims. T

In the drawings: Figure" '1 is a View in central longitudinal section through a machine constructed in accordance with invention in which the aqueous vapor is applied. Fig. 2 is an end new of the same. Fig. 3 is a transverse section therethrough upon the plane of the line 3-3 of Fig. 1. Fig. 4 is a view in partial side elevation and partial'vertical section of an apparatus in which my machine may form a part. Fig. 5 is a view in partial side elevation and partial central vertical longitudinal section through a modified form of the apparatus shown in Figs. 1, 2, and 3. Fig. 6 is a view showing in detail the means for admitting the aqueous vapor. Fig. 7 is a detail end viewshowing the preferred form of the ingredients from the dry mixer, and for receiviug water through a supply pipe 7 by which water for the purposes of hydration is admitted. The wet mixer discharges to a storage vessel or silo 8 in which the material rests for the required time,usually about twenty-four h0nrs,for the hydrating action to take place. The silo delivers'to a conveyer S) by which the material machine 10 in which the aqueous vapor is applied. One embodiment of this machine is shown in detail in Figs. 1, '2 and 3 of the drawings. It comprises two rotatable cylinders l1, l9. suitably mounted and guided in a stationary framework 13, and rotary mixing and tumbling means comprising two shafts 14, 15 having a plurality of paddle blades 16 thereon. The shafts 1%, 15 are rotatively connecta counter shaft 19, and

meet the counter shaft 19 with the drive slowly than the stirrers,

- andv a worm Wheel 23 and disposed in mesh whichis rotated by cross-over passagewag 'ed together by means of spur gears 17 and a'pinion 18, the latter being mounted upon bevel gears 20 con end of the cylinder 12 is provided with a *dlScharge chute 27 through'which the material is discharged to any suitable receiver,

.as, for instance, the receiver of a brick press;

Aqueous vapor, conveniently in, the form steam, 1s constantly supplied to the interior of. the cylinders Hand 12 by'means r the paddle hplete the h .tice that i that the niaterialtakes about fifteen of a pipe 28. The steam is caused to fill the entire space inclosed by the cylinders 11 and 12 and the cross-over passage 26 so that the material in being fed through, the apparatus is constantly exposed to, the

action thereof. As stated,- the material is fed into'the in -take chute 25, thence it I 35 passes into the cylinderll and isslowly. worked along the cylinder by the action of blades and the rotational m0vementof the cylinder until it is discharged throu h the .cross-over passage 26 to the cylin' er 12. The material thereafter passes slowly through the cylinder 12 until it is discharged-thrdughthe discharge chute 27.-

The agitation of the mixture caused by the rotation of the cylinders and. the action of the paddle blades causes every particle thereof to be exposed over and over 'again to the action of the steam, and as the lime, unti itis. fully hydrated, is highly hygroscopic,'- the required moisture will be-readilyabsorbed from the steam so as to comdration. I have found in practhe apparatus is so constructed and-arranged, anddriven at such a speed, minutes to the, otherfthe hyto pass from one end and uniformly comdration is thoroughly pleted, and the material when it' reaches the discharge chute 27, is ready for use. In Fig.55 I haveshown a modified form the apparatus which may be employed in smaller plants where asma'ller product is I tobe treated. This apparatus consists of upon a cross-shaft 24 thin, flat stream.

posite to that a single cylinder 30 rotated by worm and worm wheel means 31 and provided with an inlet chute 32 and a discharge chute 33, and agitating means comprising a shaft 34 carrying paddle blades 35. In this form of apparatus it will, of course be clear that the materialto be treated enters through the chute 32, passes .thence through the cylinder 30 while the same is being slowly rotated and theshaft and propeller blades are beingrotated at a greater speed, un'til it is-finally delivered through the chute 33. The aqueous vapor is admittedtthrough a nozzle 36, and in Figs. 6 and 7 I-have shown the preferred form of nozzle which may be employed in the construction of the apparatus as shown in Figs. 1, 2' and 3, or as shown in Fig. 5. The said. nozzle 37 is preferably flattened at the end '(see 38 Fig, 7) so as to deliver the aqueous vapor in a A pressure gage 39 may be employed [to indicate the which the aqueous vapor is admitted.

In case it should be found necessary or desirable to provide someuneims for carrying off excess of vapor a pipe or up-take may be provided at the discharge end .ofthe machine at a convenient'poi-nt in the apparatus, andfin addition a blower 40 may be connectedif dsired.- I

What I claim is:

1. In apparatus of the class described,-

the combination with a mixing apparatus, and means for supplying water thereto, of means for receiving ceiving material therefrom, means for feed- .ing the material through the vessel, and

means for passing a current of aqueous vapor'through the vessel in a direction op- ,,of the material being fed therethrough. v,

2. In an apparatus of the class described,

the combination with a dry mixer, a wet mixer and means for supplying water thereto to partially hydrate the material from the dry mixer, a silo for receiving and stor 'ing the material delivered from the Wet mixer and allowing it to age therein, a vessel for receiving the partially hydrated and aged material from the silo, agitating means within said vessel arranged to feed the material through'saidvessel in one direction.

and means for passing an aqueous vapor through said vessel -in theoppositc direc-. tion to thereby complete the-hydration of the material.

'SlGURD WInBE. Witnesses:

WM. H. H. OsBoRNn,

JOHN HEr'MLEc-H.

pressure at and storing materialdelivcred from the mixer,-a vessel for-re

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