Sasha sat before the hearth, as if deep in thought.
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.
Nothing but the crackle and soft light of the hearth disturbed the room, aside from the cold book in his hands.
In the more recent form of the hearth process the blocks of cast iron forming the sides and back of the Scottish furnace are now generally replaced in the United States by water-cooled shells (waterjackets) of cast iron.
The hearth always has an Arents siphon tap. This is an inclined channel running through the sidewall, beginning near the bottom of the crucible and ending at the top of the hearth, where it is enlarged into a basin.
Liquation, if not followed by poling, is carried on as a rule in a reverberatory furnace with an oblong, slightly trough-shaped inclined hearth; if the lead is to be poled it is usually melted down in a cast-iron kettle.
This has an oblong, dish-shaped hearth of acid or basic fire-brick built into a wrought-iron pan, which rests on transverse rails supported by longitudinal walls.
Fixed roof and a movable iron hearth (test).
In the English process the bars are heated cautiously on an inclined hearth, when relatively pure tin runs off, while a skeleton of impure metal remains.
A dry method of purification consists in a liquation on a hearth of peculiar construction, which occasions the separation of the unreduced bismuth sulphide and the bulk of the other impurities.
Under the Empire we find usually two of these, one on each side of the central figure of the Genius of the head of the household, sometimes of Vesta the hearth-deity.
A prayer was said to the Lar every morning, and at each meal offerings of food and drink were set before him; a portion of these was placed on the hearth and afterwards shaken into the fire.
In the specification for bridge material, drawn up by the British Engineering Standards Committee, it is provided that the steel shall be acid or basic open-hearth steel, containing not more than o.
Zion at least, the sacred hearth of Yahweh, the visiblecentre of His kingdom, 1 It must not be supposed that this conception necessarily came into force as soon as it was recognized that Yahweh was the creator of the universe.
To them, under the name of Lares, it was the solemn preoccupation of male descendants to offer food and sacrifice and to keep alight the hearth fire which cooked the offerings.
Small waxen images of the Manes called Lares, clothed in dogskin, and on feast days crowned with garlands, stood round the family hearth of which they were the unseen guardians (but see Lares).
Crucible steel was first successfully produced in 1832, Bessemer and open-hearth in 1864.
Nowadays the host does not admit you to his hearth, but has got the mason to build one for yourself somewhere in his alley, and hospitality is the art of keeping you at the greatest distance.
A fireplace with a native stone hearth occupied most of one wall.
Chimneys are unknown in the older houses; the hearth is in the centre of the chief room, and the smoke escapes through the roof.
In general in ancient Greece, each state, city or village possessed its own central hearth and sacred fire, representing the unity and vitality of the community.
For rails of basic open-hearth steel, which is rapidly ousting Bessemer steel, the Civil Engineers' specifications allowed from o 65 to 0-75% of carbon with 0-05% of phosphorus, while the specifications of the American Railway Engineering and Maintenance of Way Association provided for a range of 0.75 to 0-85% of carbon, with a maximum of 0.03% of phosphorus.
After wavering between various plans, he decided on the 13th of July to cast himself on the generosity of the British government, and dictated a letter to the prince regent in which he compared himself to Themistocles seating himself at the hearth of his enemy.
It stands free, isolated from the rest of the plan by corridors, is entered from a vestibule on a short side, and has a central hearth, surrounded by pillars and perhaps hypaethral; there is no central court, and other apartments form distinct blocks.
It was often a "hearth tax" (fouage), when each fire, i.e.
Lead ores are smelted in the reverberatory furnace, the ore-hearth, and the blast-furnace.
The use of the first two is restricted, as they are suited only for galena ores or mixtures of galena and carbonate, which contain not less than 58% lead and not more than 4% silica; further, ores to be treated in the ore-hearth should run low in or be free from silver, as the loss in the fumes is excessive.
The leading reverberatory furnace for roasting lead-bearing sulphide ores has a level hearth 14-16 ft.
Formerly the test was lined with bone-ash; at present the hearth material is a mixture of crushed limestone and clay (3 :I) or Portland cement, either alone or mixed with crushed fire-brick; in a few instances the lining has been made of burnt magnesite.
They intervened in case of the king's falling sick, when it was assumed that some man had sworn by the king's hearth and broken his oath.
In many respects the glassmelting tank resembles the open-hearth steel furnace, but there are certain interesting differences.
After the nine days were passed, new fire was brought, from the sacred hearth at Delos.
Foreign Countries Inquiries by local officials in connexion with measures of taxation, such as the hearth-tax in France, were instituted in continental Europe as early as the, 4th century; but as the basis of an estimate of population they were intrinsically untrustworthy.
Of the house, when the family hearth was removed from the atrium.
The roots are dug up in Mexico throughout the year, and are suspended to dry in a net over the hearth of the Indians' huts, and hence acquire a smoky odour.
When used for ore smelting, the reduced metal and the accompanying slag were to be caught, after leaving the arc and while still liquid, in a hearth fired with ordinary fuel.