Electric Smelting and Refining: The Extraction and Treatment of Metals by Means of the Electric CurrentC. Griffin, limited, 1904 - 562 стор. |
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Загальні терміни та фрази
action alkali metals alloys alumina aluminium amperes amperes per sq anode antimony apparatus arrangement bath beryllium bismuth Borchers bottom calcium carbon carbon rods carnallite cathode cell cent cerium chemical chloride compartment compounds connected containing cooling copper sulphate crucible cryolite cuprous current-density cyanide decomposed decomposition deposited described dissolved dynamo electric electro-chemical electrodes electrolytic employed English Patent experiments extraction fluoride furnace German Patent gold grms hydrochloric acid hydrogen hydroxide impurities iron latter lead liquid lithium magnesium material matte means melting vessel method metre mixture nickel Norddeutsche Affinerie obtained oxide oxidising passing placed plant plates platinum porcelain potassium precipitated present production proportion pure quantity readily red heat reduced refining removed residue separated shown in Fig Siemens silver slimes smelting sodium sodium chloride solution specific gravity sufficiently suitable sulphide sulphuric acid surface tanks temperature tion treated treatment tube vats volts whilst wire zinc zinc chloride
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Сторінка 144 - Having now particularly described and ascertained the nature of my said invention and in what manner the same is to be performed, I declare that what I claim is (d).
Сторінка ii - EARTH METALS : Magnesium, Lithium, Beryllium, Sodium, Potassium, Calcium, Strontium, Barium, the Carbides of the Alkaline Earth Metals.
Сторінка ii - Professor of Mining and Director of the Otago University School of Mines ; late Director Thames School of Mines, and Geological Surveyor and Mining Geologist to the Government of New Zealand.
Сторінка ii - Price 10s. 6d. A TREATISE ON ELECTRO-METALLURGY: Embracing the Application of Electrolysis to the Plating, Depositing, Smelting, and Refining of various Metals, and to the Reproduction of Printing Surfaces and Art- Work, &c.
Сторінка 32 - Sept. 25, 1851. the uncovered compartment is supplied with a gold electrode ; but I wish it to be understood that I do not restrict myself to the particular form of apparatus, or to the material to be used for electrodes. The vessel is filled with dry saline matter, so that when it is in a state of fusion it shall reach the dotted line [the...
Сторінка ii - COURSE FOR STUDENTS OF SCHOOLS OF MINES. BY WA MACLEOD, BA, B.Sc., AOSM (NZ), Formerly AasiBt.-Dlrector, Thames School of Mines iN.Z.), and Lecturer in Chemistry.
Сторінка 133 - I consider the proportions of fluorides of sodium and aluminium, and of the fluorides of sodium, lithium, and aluminium, hereinbefore stated, as best adapted for the purpose, such proportions may be varied within certain limits without materially affecting the operation or function of the bath, as, in fact, any proportions which may be found suitable may be employed. The...
Сторінка 132 - The positive electrode may be formed of carbon, copper, plat- 85 inum, or other suitable material. When formed of carbon, the electrode C is gradually consumed, and must therefore be renewed from time to time; but when formed of copper an oxide coating 5 is formed over the surface of the electrode.
Сторінка 150 - ... in an incandescent lamp. The arc is merely used to melt the ore in the beginning and the ore is kept melted by incandescence, so to speak, the metallic aluminium being gradually deposited at the cathode and the fluorine gas being set free at the anode so long as the ore is maintained, in a state of fusion.
Сторінка 97 - He bent a wire of pure soft iron, so as to form an angle in the middle, in which part he divided it longitudinally, by a fine saw. In the opening so formed, he placed diamond powder, securing it in its situation by two finer wires, laid above and below it, and kept from shifting, by another small wire, bound firmly and closely round them. All the wires were of pure soft iron, and the part containing the diamond powder, was enveloped by thin leaves of talc. Thus arranged, the apparatus was placed...