Specification of Edward Budd and William Morgan : furnaces for the reduction of copper and other ores."

  • Budd, Edward.
Date:
1855
Catalogue details

Licence: Public Domain Mark

Credit: Specification of Edward Budd and William Morgan : furnaces for the reduction of copper and other ores.". Source: Wellcome Collection.

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    JBudd and Morgans Improvements in Furnaces, c$c. able means before it comes over the ore under process, instead of cold air, in all the processes above mentioned, where oxidation of the charge in the furnace is desired. The second part consists of treating copper ore in a peculiar construction of furnace, by which the air may be heated without any extra consumption of fuel, 5 and which is attended with the advantage of preserving furnace by keeping it i cool. We will now proceed to describe the furnaces usually adopted for the pro¬ cesses before described. They will be better understood, and may be constructed by any competent workman accustomed to the building of copper furnaces, by 10 reference to the accompanying Drawings. The ore and metal calcining furnaces are of the description usually called reverberatory. They are usually from fourteen to sixteen feet square in the clear in the interior, having a fire-place at the back usually about three feet in height by five feet in breadth, opening at the upper part into 15 the furnace over a wall of brick, which separates the fuel from the furnace, and which is about two feet six inches high from the bottom of the furnace, and about two feet wide, which is called the “ bridge.” Figure 1 shews a sectional plan, and Figure 2 a sectional elevation, of a calcining furnace, shewing the mode of admitting heated air into the calcining 20 furnace according to our Invention, which is by a number of flues, each about five inches square, at the back of the fire-place, and separated from it by a partition of fire brick about nine inches thick, having their external openings at the bottom of the brickwork, leading upward to the top of the furnace, and being carried forwards over the roof of the fire-place as far as the bridge, into 25 which it is let down through the sides of the furnace. A flue passes through the bridge about nine inches high by four and a half wide, having two sets of openings, one set at the top of the bridge about five inches from its front surface, being each about four inches long by one inch wide, having under them other openings sloping forwards and downwards to allow of the passage 30 into the calciner of ashes, or any solid matter coming over from the fire, and which without such precaution would fill up the flue and render it useless, the other set being situated in the inner surface of the bridge, about nine inches from the bottom of the calciner, and bein£ each about four inches wide by three inches deep, for supplying heated air for the oxidation of the 35 ores or metals. The object of the first-mentioned set of flues which enter at the top of the bridge is, to supply a sufficient quantity of heated atmospheric air to complete the combustion of the gases evolved from the fuel as they pass over the bridge into the furnace, on their way to the chimney or stack which