US1331802A - Revolving separator - Google Patents

Description

. A. BeCARSTENs.

REVOLVING SEPARATOR.

APPLICATION FILED OCT. I, I918.

Patented Feb. 24,1920.

3 SHEETSSHEET I.

4 Q 0mm: 1

A. B. CARSTENS.

REVOLVING SEPARATOB.

APPLICATION FILED OCT. 1, 1918..

Patented Feb. 24,

S H E E T 3 SHEETS- 3W AZAZQM; 75/1/42.

A. B CARSTENS.

REVOLVING SEPARATOR.

APPLICATION FILED OCT. 1. 1918.

1,331,802. Patented Feb. 24,1920.

3 SHEETS-SHEET 3.

NITED ALEXANDER 1B. onnsrnns, or MONTEREY, ExIco, Assrenon rerun amnmchfl METAL COMPANY, LIMITED, or new YORK, N; Y., A CORPORATION or NEW YORK. V 1

nnvonvrne SEPARATOR.

Specification of Letters Patent.

To all whom it may concern:

Be it known that I, ALEXANDERB. CAR- a citizen of the United States, resid- STENS,

Monterey, N. L., Mexico, have ining at vented ments in Revolving Separators; and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, 'ref-.

erence being had to the accompanying drawings, and to the characters of reference marked thereon, which form a part ofthis specification. a

This invention relates to a separator for use in connection with metallurgical furnaces where the molten mass contains'two or more ingredients of different specific gravity which allowing the heavier ingredients to settle to the bottom, keeping the mass liquid or mobile by applyingadditional heat to the surface of the bath, and tapping off the heavy matter at the bottom and the lighter near the surface of the bath, thereby making the settling process practically a continuous operation. In this application the invention will be considered with special reference to its use in connection with lead smelt ing furnaces. In the everyday operations of a lead blast furnace, it is not always pos-' sible to make the slag clean enough so that it can with safety be tapped from the blast furnace and immediatelydisposed over the slag dump. The present practice is to make as clean a lead silver bullion as possible. This process may actually be taking place within the furnace, but its interior physical condition may be such that the reduced lead cannot settle to the lead well, so it runs off with the slag. Furthermore, the metallurgist desires as a rule to get a certain matte fall, that is, by adding sulfur to the charge, the sulfur combines readily with the copper if there is any in the charge and combines freely also with the iron. This matte is a good collector of values.

Hence, it is desirable to bringthe slag and matte into lntlmate contact and to have it recertain new and useful Improve-.

it is desired to separate by feature of the invention.

settle out and be taken up Patented r u e 1, 1920,

slag separator was introduced.

The first separators were large, rectangular brick afi'airs held together with buck stays and tie rods. They also had cooling pipes bmlt into the brick work to keep the I sidewalls and bottoms reasonalbly cool. There were times, however, when the sepa rator would freeze up,. The only thing to be done then was to partially dismantle f the separator and clean it. This-usuall is a most expensive proceeding. A modi cation of the separator idea is to put amatte box or settler in front of each blast furnace,

but as these as a rule, are not fired, they soon'freeze up and have to be changed fre quently. Furthermore, there are usually other elements which enter' into the separator, such as arsenic and zinc. The arsenic combines with iron and sulfur and makesspeiss, while the zinc combines with sulfur and makes zinc mush,the worst enemy of the-separator. The order in which these mixtures usually lie in the separator when settled out is as follows:

Slagtop. I

Zinc mush.

Speiss.

Matte.

Lead-bottom.

When a separator freezes, practically everything below the slag line solidifies and in this condition the separator cannot .perform its work. In a fired separator the roof is the hottest and the bottom the coolest part of the furnace.

My improved construction as illustrated in the drawing consists of a steel shell mounted to revolve so that if the separator should freeze up it is only necessary to give the shell a half turn which willbring the.

extra slag, matte'and lead taps into their ally melt out the old bottom which y the process of turning the shell half over has been placed in the roof. This islthe vital Hence, my improvement is intended to overcome the difficulties incident to the freezing up of separators of the construction heretofore in vogue and as hereinbefore explained.

I Iiiatte taps by the numeral 18. These sets of drawing? Figure 1 is a vertical longitudinalsection of my improved revolving separator, the

Having briefly outlined myimprovement as well, as thefdiificulties-itis intended to- 0vercom'e,x I will proceed toldescribe the same in detail reference being made to the accompanying drawingflin which is 1llusname; an iembodim'ent thereof; In this section. being .taken on the line 1 1, Fig. 2 looking toward "the -"right.

Fig. 2 is a view-partly in end elevation and artly in section, the section being taken on tli e.linei22, Fig; 1 viewed in the direction of the arrows.

Fig. 3 is aside elevation of my improved separator; beinga view looking in the direction of the arrows 3 3, Fig; Y 7

Fig. 41's an end elevation of the same. or

a view looking in the directionof arrows 1 withci-rcmnferentia11y arranged tires 8 en-- gaging rollers 9 for purposes of rotation. The head 7 as shown in the drawing is provided with a pulley IQ-WlIlCh is engaged by a belt 12 for the purpose of moving the furnace rotatably when for any reason it may be desirable so to do. I

The shell 5 is provided with a, refractory lining 13 which covers the curved walls and also the heads of the shell. The head 6" is provided with an opening 14 for the introduction of the fuel burner 15; while the head7 is. provided. with an opening 16 for the introduction of the slag. This opening also' serves as an escape for the products of combustion. The. head 6 at the firingend of the separator is provided with a double set of lead and matte taps, the lead taps being' designated by thenumeral 17 and the taps-are diametrically arranged. The shell isfurther provided'with two slag taps each 7 of: which is. designated by the. numeral 19,

o a v o I 12!. poured-into. the separator through the the lower slag tap being always under the lineof the slag bath 20. The two slag taps are also diametrically opposite, on'ebeing alwa s below and theother above the line of the s ag bath.

Under normal operating conditions, slag opening 16fai1d by way of a chute or corn duit 21 until it reaches the. line or leveli20 (see:Fig. 1).. After the slag hasbeen at rest for a Whil the heavier ingredientswill be settled down so that the slag can be tapped out at the lower slag tap19-into a i slag pot or other suitable receptacle suitably arranged for the purpose but not illus tratedin the drawing. U j

When sufficient amount of 7, lead and matte has collected, it may be removed by way of the taps 17 and 18.

If the separator should freeze up all that is necessaryis to give the shell a. half turn which will bring the extra slag, matte and lead taps into their respective positions and the heat will gradually melt out the old bottom which by the process of turning, the shell half over has been placed in the roof fasheretofore explained- It is not necessary that this separator:

should be cylindrical in shape, since it may be polygonal, rectangular "or elliptical; or any combination of shapes necessary to produce the desired metallurgical results. It need not necessarily be mountedion tires for turning,- since it may be suspended or mounted to rotate on trunnions.

In Fig. 5 I have illustrated a hand-ma nipulated winch,p0r drum; for imparting the rotary movement .to the cylinder, as-circum-,

stances may require. This form is believed preferable to the belt construction shown in i the other views, since the heated condition of the cylinder might interfere with thethrowing on a-nd'ofi ofjthe' belt, even though the latter were made of noncombustiblematerial; I

In Fig. 5, letthe numeral 25 designatea winch considered in itsfentirety and composed of bearing uprights, 26, a drum,27,

journaled in said uprights, a gear, 28, on I the drum, the smaller gear, 29, meshing with the gear 28,;the gear 29 being fast ona shaft, 30, suitably. joiurnaled and, having crank handles, 31, atits opposite extremities. A cable, 32, is wrapped around the cylinder and also around the drum, 27, of the winch,

so that as the winch is rotated, the drum will be actuated asdesired. Thei'speed-reg ducing construction} disclosed in 5 makes it practicable to operate the cylinder byhand, as willbe readily understood. It?v is preferred that the cylinder should be provided midway between its extremities With a circumferential track, 33, which will maintainthe cable in position at all times. 'What I claim is; r V l. A separator for .molten ma erials of dlfi'ering specific gravity, comprising a retatable shell having two sets of tap holes occupying a diametrically opposed relation toe'ach other, axially disposed means for di recting heat to the interior of said shell and means for rotating said shellto permit the utilization of either set of tap holes.

. 2. A separator for molten materials of differing specific gravity, com rising. a rotatable 1 14. QYingJWQB E. ll pb l e cupying a diametrically opposed relation to each other, the tap holes of each set beingspaced diametrically of said shell, axially disposed means for directing heat to the interior of said shell and means for rotating said shell to permit utilization of either set of tap holes.

3. A separator for molten materials of varying specific gravity, comprising a metal shell having a lining of refractory material and having an axially located opening at each end, the shell having two sets of tap holes, the number and position of each set corresponding with the different materials 2 to be handled by the separator, the two sets being oppositely located diametrically and the shell being. movable to bring the two sets alternately into position for use.

4. A separator for molten materials of varying specific gravity comprising a metal shell having a llning of refractory material and having an axially located opening at each end, one opening being adapted to receive molten material and permit the escape of products of combustion, while the opening at the other end is adapted torehandled, the two sets being oppositely lo- 1 cated and theshell being movable to bring the said sets alternately into position for use.

5. A separator for molten materials of differing specific gravity, comprising a rotatable shell, axially disposed openings in the ends of said shell for introducing mate rial and heat to the interior of said shell,

two sets of tap holes diametrically opposed in the ends of said shell and means for rotating said shell to permit utilization of either set of tap holes.

In testimony whereof I aflix my signature.

ALEXANDER B. CARSTENS.

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