Some Founders of the Chemical Industry Men to Be Remembered
Some Founders of the Chemical Industry Men to Be Remembered
J Fenwick John Fenwick Allen
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June 21, 1858. The puri- HENRY DEACON 175 fication of alkaline lyes, by the addition of protoxide of iron to such lyes at a temperature not exceeding 130 Fahrenheit. Separating at a temperature under 130 the precipitate obtained, and then decanting off the alkaline solution, and lastly using the precipitated sulphides by roasting them with an alkaline chloride to obtain an alkaline sulphate. No. 352. Feb. 9th, 1860. Taken out by Henry Deacon and Thomas Robinson (Robinson, of Robinson and Cooks,... engineers, St. Helens, and of Hargreaves and Robinson, of Widnes). It was for the use of a cupola or separate combustion chamber, and blasted air, in combination with any decomposing apparatus, reverberatory or other furnaces used in the manufacture of soda, for the purpose of decomposing the salt or salt cake, roasting the salt cake, making the black ash, and evaporating, or finishing, or calcining. No. 1030. Xoth April, 1862. In the ordinary manufacture of caustic soda the caustic liquors are evaporated, and during evaporation the salts precipitated are re- moved, and evaporation is continued until the residual liquors become so concentrated as to solidify on cooling, or until so much of the water is driven off as is required.
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