Metallurgy: The Art of Extracting Metals from Their Ores, and Adapting Them to Various Purposes of Manufacture, Band 2J. Murray, 1864 - 934 Seiten |
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Metallurgy: The Art of Extracting Metals From Their Ores, and Adapting Them ... John Percy Keine Leseprobe verfügbar - 2018 |
Metallurgy: The Art of Extracting Metals from Their Ores, and Adapting Them ... John Percy Keine Leseprobe verfügbar - 2018 |
Häufige Begriffe und Wortgruppen
action alloy Alumina ammonia amount analyses bar-iron bars Berzelius blast blast-furnace boshes bottom brittle button calcined carbonic acid cast-iron Catalan furnace charcoal charge cinder clay coal coke cold-blast colour consists contained copper crucible crystalline crystals cwts diameter dissolved Ebelmen employed experiments forge formula fracture fuel furnace fusion gases grains graphite grey hæmatite hammer hearth heat high temperature hot-blast hydrochloric acid hydrogen iron-ore Iron-works Karsten lime limestone lump Magnesia magnetic manganese mass melted metallic iron mixture mouth nitrogen obtained oven oxide oxide of iron oxygen phosphoric acid phosphorus pieces pig-iron pipes potash potassium powder produced proportion protoxide of iron Protoxide of manganese puddling quantity red-short reduced sesquioxide of iron silica silicon slag smelting solution specific gravity spiegeleisen Staffordshire steel sulphate sulphide sulphuric acid surface tion tons tube twyer weight yield zinc
Beliebte Passagen
Seite 385 - The air vessel may generally be conveniently heated by a fire, distinct from the fire to be affected by the blast or current of air, and generally it will be better that the...
Seite 861 - Of coal-mines we have such plenty in the north and western parts of our island as may suffice for all the realm of England; and so must they do hereafter indeed, if wood be not better cherished than it is at this present. And...
Seite 96 - ... or weldable. The differences between these three well-known sorts of iron essentially depend upon differences in the proportion of carbon, though, as we shall learn hereafter, other elements may and often do concur in modifying, in a striking degree, the qualities of this wonderful metal.
Seite 859 - Bawd, succeeded and exceeded his master in this his art of casting ordnance, making them cleaner and to better perfection. And his son, Thomas Johnson, a special workman, in and before the year 1595, made 42 cast pieces of great ordnance of iron, for the Earl of Cumberland, weighing 6000 Ibs., or three tons a-piece."| Whether Sussex was the scene of these operations, however, does not appear.
Seite 799 - The air expanding in volume, divides itself into globules, or bursts violently upwards, carrying with it some hundred weight of fluid metal, which again falls into the boiling mass below. Every part of the apparatus trembles under the violent agitation thus produced, a roaring flame rushes from the mouth of the vessel, and as the process advances, it changes its violet colour to orange, and finally to a voluminous pure white flame.
Seite 666 - ... the passage of air through the fire is attended with the generation of heat, whereas the production of the water gases, as well as the evolution of the hydro-carbons, is carried on at the expense of heat. The generation of steam in the water trough being dependent on the amount of heat in the fire, regulates itself naturally to the requirements ; and the total production of combustible gases varies with the admission of air. And since the admission of air into the grate depends in its turn upon...
Seite 795 - forcing currents of air, or of steam, or of air and steam, into and among the particles of molten crude iron, or of re-melted pig or refined iron, until the metal so treated is thereby rendered malleable, and has acquired other properties common to cast steel, and still retaining the fluid state of such metal, and pouring or running the same into suitable moulds.
Seite 178 - has indeed a political tendency, being written to defend the church of England against the sectaries : it is not, therefore, so much from the conclusions of the piece, as from the mode of the author's deducing...
Seite 173 - ... exploded with much force, tearing open the foil, and evolving a faint light. When dropped on the surface of heated mercury, it exploded readily at 400° of Fahrenheit, but with difficulty at 370°. When its temperature was raised slowly, it did not explode, but was decomposed quietly. When detonated in the bottom of a hot glass tube, much water and fume were given off, and the residuum collected was metallic platina with a very little iron and charcoal. We are uncertain how far this preparation...
Seite 715 - ... his kind friends as he had appeared, no one knew whence or whither. On his return to England he communicated his voyage and its results to Mr. Knight and another person in the neighbourhood, with whom he was associated, and by whom the necessary buildings were erected and machinery provided. — When at length...