BC to BD, and which is then called a retort; when used, it is placed either in a reverberatory furnace, Pl.
The cast iron is melted in a reverberatory furnace, and the flame of the combustible is made to act upon the melted matter.
The loss in lead by the combined reverberatory and blast-furnace treatment is only 3.
The lead produced in the reverberatory furnace and the ore-hearth is of a higher grade than that produced in the blast-furnace, as the ores treated are purer and richer, and the reducing action is less powerful.
From the reverberatory furnace or the kettle the refined lead is siphoned off into a storage (market) kettle after it has cooled somewhat, and from this it is siphoned off into moulds placed in a semi-circle on the floor.
The latest cupelling furnaces have the general form of a reverberatory copper-smelting furnace.
The spelter used must therefore be of a good grade, and the lead is usually first refined in a reverberatory furnace (the softening furnace).
The zinc and some lead are oxidized; part of the zinc passes off with the fumes, part is dissolved by the litharge, forming a melted mixture which is skimmed off and reduced in a blast-furnace or a reverberatory smelting furnace.
Lead ores are smelted in the reverberatory furnace, the ore-hearth, and the blast-furnace.
In the reverberatory furnace, similar to the one used in softening, the lead is brought to a bright-red heat and air allowed to have free access.
The leading reverberatory furnace for roasting lead-bearing sulphide ores has a level hearth 14-16 ft.
If the lead is to be liquated and then brought to a bright-red heat, both operations are carried on in the same reverberatory furnace.
The reverberatory furnace commonly used for cupelling goes by the name of the English cupelling furnace.
Three types of reverberatorypractice are in vogue--the English, Carinthian and Silesian.
On the small scale this alloy is prepared in crucibles; but for statues and larger works on reverberatory hearths.
At the end of the blow the converter is turned down and its contents discharged into a traveling ladle, and quickly delivered to machines called ballers, which are rotary reverberatory furnaces, each revolving on a horizontal axis.
The bicarbonate was placed in a reverberatory furnace, where the heat drove off the water and one equivalent of carbonic acid, leaving the alkali as monocarbonate.
The crown of each cell is formed of a reverberatory firebrick arch having openings for the emission of the products of combustion.
The cells intercommunicate, and the mechanical mixture of the gases arising from the furnace grates of the various cells is sought by the introduction of a special design of reverberatory arch overlying the grates.
Here Bessemer claims to have made glass for the first time in the open hearth of a reverberatory furnace.
It was a modification of the puddling furnace, in which the ore and carbon were heated in tubs, utilizing the waste heat of the reverberatory furnace (see the Mechanics' Magazine, vol.
Although I am not certain as to the exact degrees of heat requisite for the fusion of these materials, I may mention that, in an ordinary reverberatory furnace, I have fused five cwt.
Here the sulphate, if it existed in the alkali, is decomposed by the silicic acid, and the sulphuric acid passes off through the flues of the reverberatory furnace.
This may be effected in crucibles, or, still better, in reverberatory furnaces, where a large quantity may be melted more conveniently.
The metal thus obtained is not pure enough, but must be fused under coal dust, in portions of 20 or 30 pounds, in crucibles, placed upon a reverberatory hearth.
It is then mixed with one third or one half its weight of coarsely bruised nitre, and exposed to a powerful heat, for several hours, on a reverberatory hearth, where it is stirred about occasionally.
The refining of tin consists of two operations; the first being a liquation, which, in the interior, is effected in a reverberatory furnace, similar to that employed in smelting the ore.
The yellow ochres may be easily rendered red or reddish brown by calcination in a reverberatory oven, which oxidizes their iron to a higher degree.
Very frequently, indeed, the reverberatory furnaces are armed with cast-iron plates over their whole surface.
On the hearth of the reverberatory furnace, 10 quintals of moderately rich ore are spread; these are heated temperately for some time, and stirred about to promote the sublimation of the sulphur.
A certain quantity of bell metal was completely oxidized by calcination in a reverberatory furnace; the oxide was raked out, and reduced to a fine powder.
Hence every thing conspires to turn the balance in favour of the reverberatory plan.
It is harder, more sonorous than the lead obtained from the reverberatory furnace, and is preferred for the manufacture of minium, lead shot, and some other purposes.
Reverberatory furnaces have been long used for this operation; the best being of an elliptical form.
His method may be thus briefly described: the bottom of the reverberatory furnace was hollow, so as to contain the fluid metal, introduced into it by ladles; the heat being kept up by pit-coal or other fuel.
It is curious that Rovenson, in his Treatise of Metallica of 1613, describes a reverberatory furnace in which iron was to be smelted by pit-coal, though it does not appear that he succeeded in perfecting his invention.
Flue bridge, the separating low wall between the flues and the laboratory of a reverberatory furnace.
It is made either directly from the ore, as in the Catalan forge or bloomery, or by purifying (puddling) cast iron in a reverberatoryfurnace or refinery.
A heavy, reverberatory sound; as, the roll of cannon, or of thunder.
Frit brick, a lump of calcined glass materials, brought to a pasty condition in a reverberatory furnace, preliminary to the perfect vitrification in the melting pot.
Impurities are burned out from pig-iron in an open reverberatory furnace, by constantly stirring the metal in contact with air.
A reverberatory furnace is one in which the fuel is in one compartment, and the heat is reflected downward into another, that holds the substance to be acted upon (Fig.
Reverberatory furnace for the manufacture of sodium carbonate.
Then take out the matter remaining in the cucurbit, put it into a retort, leaving a full third thereof empty, and distil in a reverberatory with degrees of fire.
It is easy to perceive this by the stink of garlic which you will smell about the furnace; and moreover, the flame that issues through the apertures of the reverberatory will be of a beautiful violet colour.
Set the retort in a reverberatory furnace: fit thereto a large glass receiver, and, having luted the joint well, give fire by degrees.
Put this residuum into a glass retort, and distil it in a reverberatory with a naked fire, gradually increased according to the general rule for all distillations.
Set it in a reverberatory furnace, and having fitted a recipient thereto, and luted the joint, make a very small fire at first, to heat it slowly.
The roasting is done in a reverberatory furnace, in which the heat is very gradually raised, the ore being constantly stirred; the heat is then increased sufficiently to raise the ore to a good red heat.
This interesting process is performed in a reverberatory furnace of a very peculiar construction, the cupel employed on the large scale differing somewhat from the ordinary one, being considerably larger and varying also in form.
Metallurgical furnaces of the first class are termed crucible, muffle or retort furnaces, and of the second shaft and reverberatory furnaces.
According to the purposes to which they are applied, reverberatory furnaces may be classed into two groups, namely, fusion or melting furnaces, and calcining or wasting furnaces, also called calciners.
This is especially necessary in the case of reverberatory furnaces, which are essentially weak structures, and therefore require to be bound together by complicated systems of tie rods and uprights or buck staves.
This furnace is stated to be more economical in labour than other mechanically stirred reverberatory furnaces, and there is also said to be an economy in fuel.
There are several modifications of the reverberatory furnace in use, designed mechanically to effect the rabbling.
The furnace is fired with coal on a grated hearth, built at the lower end; it is more economical both in fuel and in labour than an ordinary reverberatory furnace.
Where the ordinary reverberatory hearth is fired with solid coal from an end grate, the temperature is at its maximum near the firing end, and tails off at the extreme gas outlet end.
This furnace of the reverberatory type is provided with side openings by which the turning over of the ore can be manually effected, and the new ore can be charged and afterwards withdrawn.
One disadvantage of the reverberatory furnace is the fact that it is impossible to avoid the incursion of air during the manual rabbling action, and this tends to cool the furnace.
On the large scale lead is obtained by roasting galena in a reverberatory furnace, and smelting the residue along with coal and lime.
A crude peroxide of tin, obtained by exposing metallic tin in a reverberatory furnace, and raking off the dross as it forms; this is afterwards calcined until it becomes whitish, and is then reduced to powder.
From 1 to 5 tons of pig or cast iron in a molten state are run from a contiguous blast, cupola, or reverberatory furnace, with an apparatus known as a converter, which is previously heated up to redness by means of coke.
The red hot stones in Gaul were probably as much figments of imagination as was the assumption of one commentator that they were a reverberatory furnace.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "reverberatory" in a variety of sentences. We hope that you will now be able to make sentences using this word.
