US1041977A - Zinc retort-furnace. - Google Patents

Description

o. A. H. DE SAULLES. ZINC BBTORT PURNACE. APPLIOATION FILED APB. 22, 1911.

1,041,977. Patented Oct. 22, 1912.

Y SAULLES, a citizen of the United gas and air ports varies progressively from `a full, clear,

'mitted through a series of gas ports asso- 'cate compartments of this character, whose through a down-take common to both, to an CHARLES A. H. DE sAULLEs, 0F eAs,

1BANY, 0F NEW Yoan, N.

KANsAs, AssIGNon To `NEW JERSEY ZINC CoM- Y., A CORPORATION 0F NEW JERSEY.

ZINC RETORT-FURNACE.

nearer?.

'0 all whom it may concern.' Be it known thatI, CHARLES A. H. Dn States, residing in -Gras, county of Allen, State of; Kansas, have invented certain new and useful Improvements in Zinc Retort-lurnaces; and I do hereby declare the following to be j and exact description of the invention, such as will enable others skilled I in the art to which it appertains to make and use the same. l

My invention relates to zinc retort furnaces of that type wherein the exit flueA for the products of combustion is located at one end of the furnace chamber, the retorts or mutlies being supported, as usual, 1n an inclined position, in a number of rows one above the other, and being heated frombe'- low by the combustion of gaseous fuel adciated with supply ports.

In the furnace hereinafter described, the arrangement of the retorts or mutliesl is upleX, in the sense that the combustion. chamber is practically divided into two compartments merging at the top 1n a central down-take, Whose walls serve to support the shelves or ledges Iupon which rest the rear ends of the retorts. Each of these compartments isheated in the same way, that is to say, from gas and air ports disposed in longitudinal series a corresponding series of air alternately along the base of the ledge-supportmg'wallM In a symmetrical arrangement of dupliproducts of combustion are conducted exit flue located at the extreme end of the.

furnace, the draft of the chimney upon the one end of each compartment to the other, and to such a 'degree that there is aK correspending non-uniformity of temperature conditions in the `combustion chamber, the portions more remote from the exit endfor the waste gases being less eiliciently heated. As a consequence, in order that in theretorts may befinished or worked off within practically the same working time, some sacrifice in the amount of the charge must ordinarily be tolerated in the less etliciently heated retorts.

My invention is designed to avoid this diculty, so as to permit the retorts, What- Speecation of Letters Patent.l vApplication filed April 22, 1911.

the charges Patented Get. 22, 1912. serial No. 922,671.' v

ever be their location with respect to the exit-fine of the combustion chamber, to be equally heated, and therefore to be worked off, with the maximum charge for each, in practically the same time, thereby propor# tionately increasing the output .of the fur\ nace as a Whole. To this end, I supply both the air and the gas to the furnace, under pressure, from suitable mains and provide the branch pipes, leading from the respective mains to the air and gas ports of the combustion chamber, with independent regulating valves. By appropriately adjusting these independent valves, according" to the pressures prevailing in the mains and according to the draft of the chimney, I am thus enabled to realize with substantial accuracy equalized conditions Cf temperature v throughout the entire length of both com; partments of the combustion chamber,-a result which, so far as I am aware has not been heretofore accomplished in furnaces of this type.

In the accompanying drawing Figure l represents a cross-sectional view, partly in elevation, and partly broken awa of a zinc retort furnace embodying my improve-` ments; Fig. 2 represents a longitudinal sectional view thereof taken in part on a central plane, an in part, on a plane indicated by the irregular dotted line 2%2 of Fig. l.

Similar letters of reference indicate similar parts throughout the several views.

eferring -to the drawing, A indicates the y supporting foundation for the retort chamber B, which, as shown, is divided into two compartments having a central longitudinal downtalce which communicates at one end ofthe furnace with a suitable iue c leading to the chimney stack C. The retorts d for receiving the charge of zinc ore and reducing material are supported in the -usual manner in an inclined position, and rest with their rear ends upon the ledges e which are supported by the vertical walls f of the downtake Z), s aid Walls being suitably buttress'ed by the arches h.

'At the base of'each of the compartments of the combustionchamber, are located a series of air ports anda series-of gas ports, which are preferably7 *assembled in pairsand alternating with each other, the pairs being preferably spaced `at substantially equal distances apart,'sp as toivcontrol tno,

temperatures prevailing in the respective combustion'. chamber having an exit ue for zones ofv the furnace to which they severally belong. The air ports z' communicatewith an air pressure main D, through the instrumentality of a series of branch pipes m, each of which is provided with a regulating valve n :tor controlling the supply of air therethrough. So also, the gas ports a are connected to a gas pressure .main E through the instrumentality of a series oi' branch pipes. s, each of which is provided with a regulating valve t for controlling the amount of gas passed therethrough. The air pressure main D and the gas pressure main E for each compartment of the combustion chamber are conveniently located in the arched tunnel' F and may be supported, as shown, upon the tie rods fv, or otherwise.

The mode of operation of the furnace will be apparent.

By means 'of the regulating valves for the air and gas ports, the relative quantities of air and gas to obtain an equalized combus tion throughout the length of both compartments of the combustion chamber may be` accurately determined by the skilled operator, or may be varied from time to time as circumstances may require.

Having thus described my invention, What I claim is:-

l. A zinc retort furnace, provided with a the products of combustion at one end thereolf, zinc retorts located Within the chamber,

a series of air ports and a series of gas ports opening into the combustion chamberbelow the retorts, an air pressure maln and a gas pressure main communicating with the said partments, a series of air-ports and a series of gas ports opening into each compartment below the zinc retorts, an air pressure main and a gas pressure main communicating With the air ports and gas ports respectively, and valves fo'controlli'ng independently .the air supply and the gas supply from themains to each of the. air and gas ports; substantially as described. u

In testimony whereof I aix my signature, in presence of tvvo` Witnesses.

CHARLES A. H. 'DE SAULLES.

Witnesses A. D. TERRELL, BLANCHE Gone.

Copies of this patent may be obtained for ve cents each, by addressing che Commissioner of Patents,

Washington, D. G. Y

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