Metallurgy: The Art of Extracting Metals from Their Ores, and Adapting Them to Various Purposes of Manufacture, Volume 2 |
Other editions - View all
Metallurgy: The Art of Extracting Metals From Their Ores, and Adapting Them ... John Percy No preview available - 2018 |
Metallurgy: The Art of Extracting Metals from Their Ores, and Adapting Them ... John Percy No preview available - 2018 |
Common terms and phrases
alloy Alumina ammonia analyses bar-iron bars Berzelius blast blast-furnace bottom button carbonic acid cast-iron cast-steel charcoal charge cinder clay coal coke colour consists contained copper crucible crystalline crystals cwts decarburization diameter dissolved Ebbw Vale employed experiments forge fracture fuel furnace fusion grains graphite grey hæmatite hammer hearth heat high temperature hot-blast hydrochloric acid hydrogen inch iron-ore Iron-works lime lump Magnesia magnetic malleable iron manganese manufacture mass melted metal mixture molten nitrogen obtained oxide oxide of iron oxygen patent phosphoric acid phosphorus pieces pig-iron pipes plates potash powder produced proportion protoxide of iron puddling puddling furnace quantity red-short reduced residue rolls salt sesquioxide of iron side silica silicon slag smelting solution specific gravity spiegeleisen Staffordshire steel sulphate sulphide sulphuric acid surface tons trace tube twyer weight welding wrought-iron yield zinc
Popular passages
Page 185 - Q4.36 iron, + 5.64 carbon. This being broken and rubbed to powder in a mortar, was mixed with pure alumine, and the whole intensely heated in a close crucible for a considerable time. On being removed from the furnace, and opened, an alloy was obtained of a white colour, a close granular texture, and very brittle : this, when analysed, gave 6 A per cent, alumine, and a portion of carbon not accurately estimated.
Page 733 - The most extraordinary and the best attested instance of enthusiasm existing in conjunction with perseverance, is related of the founder of the Foley family. This man, who was a fiddler, living near Stourbridge, was often witness of the immense labour and loss of time caused by dividing the rods of iron, necessary in the process of making nails. The discovery of the process called splitting, in works called splitting-mills...
Page 397 - 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...
Page 877 - It was a small casting, in the shape of the fore-leg of a bull. It formed the foot of a stand, consisting of a ring of iron, resting on three feet of bronze. It was deeply corroded in places, and posteriorly was fissured at the upper part. A section was made, which disclosed a central piece of iron, over which the bronze had been cast. At the upper part, where it had been broken off, the iron had rusted, and so produced the crack above mentioned.
Page 733 - When at length everything was prepared, it was found that the machinery would not act, at all events it did not answer the sole end of its erection — it would not split the bar of iron. Foley disappeared again, and it was concluded that shame and mortification at his failure had driven him away for ever. Not so : again, though somewhat more speedily, he found his way to the Swedish...
Page 819 - 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.
Page 186 - 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...
Page 638 - The specification of the invention will be comprised in a few words, as it will only set forth that a reverberatory furnace being built of a proper construction, the pig or cast iron is put into it, and without the addition of anything else than common raw pit coal, is converted into good malleable iron, and, being taken red-hot from the reverberatory furnace to the forge hammer, is drawn out into bars of various shapes and sizes, according to the will of the workmen.
Page 181 - ... 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...