A Theoretical and Practical Treatise on the Manufacture of Sulphuric Acid and Alkali: With the Collateral Branches, Volumen2J. Van Voorst, 1880 |
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Otras ediciones - Ver todas
A Theoretical and Practical Treatise on the Manufacture of ..., Volumen2 Georg Lunge Vista completa - 1895 |
A Theoretical and Practical Treatise on the Manufacture of ..., Volumen2 Georg Lunge Vista completa - 1895 |
A Theoretical and Practical Treatise on the Manufacture of ..., Volumen2 Georg Lunge Vista completa - 1880 |
Términos y frases comunes
according acid vapours alkali alkali-works aluminate apparatus arch balls barium bicarbonate black ash black-ash furnace blind roasters boiling bottom calcining calcium carbonate carbonic acid cast-iron caustic soda cent chalk Chem chimney chloride CO₂ coal coke coke-towers colour common salt condensers contains converted cooling crystals cylinder decomposed decomposition dissolved employed escape evaporation excess feet ferric oxide filter fire fire-gases flues formed gases grams H₂O Hargreaves's heat hydrate hydrochloric acid hyposulphite inches insoluble iron kilog latter Leblanc lime limestone liquid liquor lixiviation Mactear manufacture mass means melting mixed mixture muriatic acid Na,S Na₂O NaCl nitrate obtained open roasters ordinary patent pipes precipitated proposed pyrites quantity reaction residue Schaffner silicate soda ash sodium carbonate sodium chloride sodium sulphate soluble solution steam sulphide sulphur-liquor sulphuric acid tank-liquor tank-waste tanks temperature tion tons tower usually vessel waste whilst yield دو
Pasajes populares
Página 103 - ... salt-cake has been almost entirely overcome. 2. That the condensation is effectually performed and the muriatic acid recovered at a strength varying from 24° to 30° T. (See list of chimney tests.) 3. That the finished sulphates are of a superior quality and of a more uniform character. 4. That allowing for the extra cost of coke (as against coal where used) steam, &c., a material saving in labour, in wear and tear, and also in sulphuric acid, is effected as compared with the manual labour system...
Página 248 - Hulls' engine, in which the rope g, that connects the wheels a and d, is represented as passing from the top of the first to the bottom of the...
Página 323 - The patentee also maufaclures carbonate of soda, as well as hydrate of soda, directly from common salt, by the decomposition of that substance by means of certain organic acids which are afterwards decomposed by heat ; by gaseous acids capable of decomposing chloride of sodium ; by the decomposition of common salt by hydrates, oxides, peroxides, and certain, metallic bases ; also by certain carbonates— carbonate of ammonia excepted.
Página 284 - ... depends upon the percentage of carbonate of sodium in the water. In some of the lakes, bottom deposits are said to have gradually formed whose upper portion, 16 feet thick, consists essentially of sodium chloride, whilst the lower one, 17 feet thick, contains sodium carbonate. The above mentioned crusts, which are 15 to 18 inches thick, are pushed off by means of poles and spades, spread out to dry on the banks, and carried in baskets to the Nile, whence the salt is shipped to 'D'Arcet: Coir.ptcs...
Página 484 - Add to the filtrate 1 cc. of strong nitric acid that has been made brownish in color by exposure to the light, and titrate with a standard solution of potassium iodide until a drop of the liquid brought into contact with a drop of starch liquor, on a spot-plate, shows a faint bluish tinge. It is a good plan to set aside about one-third of the mercury solution and add it in portions until the endpoint is successively passed, finally rinsing in the last portion and titrating to the end-point very carefully.
Página 136 - The salt, prepared in the manner previously described, is placed in cast-iron cylinders, where it remains without further manipulation till converted into sulphate. The minimum number of cylinders is eight ; the greater the number, the more regular is the reaction, and the smaller the quantity of fuel required per ton of sulphate manufactured. In fact as many as 20 cylinders are employed.
Página 185 - ... alkali-works had increased to such an extent that the absolute quantity of hydrochloric acid escaping uncondensed amounted to much more than that which escaped in the former period, when no condensation at all was attempted. The destruction of the vegetation round the alkali-works was only too evident, without any Commissions of inquiry, although...
Página 274 - From its solution it crystallizes with 1, 2, 3, 5, G, 7, 10 and 15 molecules of water; (1) according to the temperature of the solution, and (2) according to whether the solution, prepared at a boiling heat, in cooling down is freely exposed to the air or not. Of these hydrates the monohydrate...
Página 484 - ... solution, until the whole of the sulphides, &c., are converted into sulphates, and the ferrocyanide into ferricyanide ; the solution, after being acidified and freed as much as possible from excess of chlorine by warming and agitating, is ready for titrating. On a porcelain slab sprinkle a few drops of a dilute solution of ferrous sulphate (i part of ferrous sulphate to 100 parts of water).
Página 101 - ... insufficient to calcine the charge. Modifications of the details of the working parts have been numerous, chiefly as regards the stirrers or scrapers, of which a variety of forms have been tried ; but so far as I have been able to learn, none of those in the plough shape, rigidly fixed to the cross arms, have been found to answer so well as the loose scrapers or paddles, partly owing to the caking of the salt-cake on the sole of the pan. The best form of stirrer to avoid these evils, and at the...