US1040460A - Fume-arrester for regenerative matting-furnaces. - Google Patents

Description

T 0 al whom t may concern I ers at. R

WILLIAM FREDERICK TAYLOR; 0F TACOMA, WASHINGTON.

FUME-ABRESTER FOR REGENERATIVE 'MATTING-FURNACES.

1,040,460. 4 Original application filed `Tune 12, 1908,

Specification of Letters Patent.

Serial No. 438i,247. Divided and this application filed October 23, 1.911. Serial No. 656,322.

Patented oct. s, 1912.

Be it known that I, WILLIAM FREDERICK TAYLOR, a citizen of .the United States, residing at Tacoma, in the county of Pierce and State of lVashington, have invented certain new and useful Improvements in Fume-Arresters for Regenerative Matting-l'-` Furnaces, of which the following is a speci cation.

The-objects of the invention are, first, toy

provide a regenerative furnace with a fume arresting device, as illustrated in the accompanying drawing in which# Figure l isa vertical section lengthwise through the furnace; Fig. 2 is a plan section on the line 2-2; Fig. 3 is a sectional part of the flue to the smoke stack and contains the condenser.

Similar lettersrefer to similar parts in the several views.

Fire-boxes or combustion chambers are indicated at A A and are designedto be used alternately. vEach fire-box is located overV a chamber of lues C -C, or checkerwork, constructed of refractory 'materials, which open at the bottom into dues B B, connected with the smoke stack S through external fines F F', which are provided with dampers M M with which to regulate and alternate the draft. Each fire-box is provided with a forced draft by means of air flues D D', which open the full width of the bottom into the flues B B and which are supplied with air from the Root blow- B and RV B through the pipes IC E' connected therewith. The force and quantity of air is regulated by machinery which operates the Root blowers. The heat indicator G shows the desired amount of heat required. Each fire-box is connected with smelting hearths H H by means of `ports I I. The furnace is heated by starting a tire in one of the lire-boxes as A, the

become well heated by M K being closed and M K being open. This causes the products of combustion to pass through the smelting charnber over the hearth I-T I-l, through the firebox. A to the -flues B C and F to the smoke stack S. When the furnace and fines the products 0f combustion, a v[ire is started in fire-box A and the dampers reversed, and the fire in A is allowed to go down when the flues D and dampers C become heated and the furnace is ready for use.

Ore is put in the furnace through the charging hoppers .I J the ore being spread and stirred through the doors N N.

natelv, the fresh ore being deposited on the 'hearth farthest from the {ire-box in use, so

that the ore will be roasted preparatory to being subjected to the intense heat of the nearest fire-box when the fire is alternated to it. The fires thus alternated and t-hc .ores being exposed to the products of combustion alternately from the opposite ends of the furnace, the ores' soon become reduced to matte and slag, which readily collects in the lead well L and is drawn 0H, the slag at the upper tap hole O, and the bullion at the 'lower tap hole P.

In connection with the foregoing construction I employ my fume arrester .as follows: At Q is located a cold water pipe having outlets designed to discharge alternately into the fluesF and F,`each outlet being operated by a valve V V. The spray of cold water discharged from these outlets condenses or precipitates all volatilized metals from `the lsmoke and gases passing through the flue. A receptacle or well U collects these metals and they are thus saved.

Under the construction described a forced spray of water' is injected into the lines leading from the superheating chambers or lues at a point between the passage of the products from the superheaters and the smoke stack, and a well is provided to receive the precipitated materials at a oint in advance of the escape of the prolducts into the smoke stack. In other words Vaforced draft of air isgdriven directly into a flue at the bottom flues and is supplied through a flue independent of the flue by 'which the products are carried from-the superheating flue to the smoke stack, and this makes itpossible to precipitate and collect valuable precipitates from the products which pass from the superheating iue through an independent flue leading therefrom to the. smoke stack.

This application is'iled as a division of my application tiled June 12, 1908, Serial of the superheating` -The hearths are designed to be charged altermnber 438,247 and isy designed to cover- Hie fume arresting feature of the invention.

Having described lily-invention what I claim is l 1 In f1 regenertiVe-furnace 4having Valve controllediues leading from the lower part of the super-heating ues and merging into a smoke stack, nieans'for injecting a Spray of Water into, the ,escaping behveen the bottom of the swffr-iieuting gases at :i gmini volatilized metals carried of" from die smelting heart/hs, and :L well in that portion 'of'the Hue openingv into the smoke stuck for receiving the precipitated metals, subs'izmt-ially as described.

n testimony whereof I aiix my Signature in presence. of two Witnesses'.

fines and; the smoke stavi: :for reci itatino' E. T. Mooi/i.

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

Washington, D. C.

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