. Journal. + 2NaHO + O = Na.,Mn04 + H20Na,Mn04 + H.,0 = MuO., + 2NaHO + 6 According to the process before you these formula? wouldread as follows :— 10Na.,Mn()4 + NallO + 10 H20 = 21 XallO +? 5 Mn303 + NallO + 5 Mn.,0, + 15 (O + N4) = 10 + XaHO + 10 H20 + Nco. You will notice that the excess of caustic soda actsindependently of the material itself, and, provided that onlythat amount of moisture be at any time allowed to enter theretorts, that can readily be absorbed, and can again begiven up by such excess of caustic soda, the material willpractically remain unaltered. I had, p
. Journal. + 2NaHO + O = Na.,Mn04 + H20Na,Mn04 + H.,0 = MuO., + 2NaHO + 6 According to the process before you these formula? wouldread as follows :— 10Na.,Mn()4 + NallO + 10 H20 = 21 XallO +? 5 Mn303 + NallO + 5 Mn.,0, + 15 (O + N4) = 10 + XaHO + 10 H20 + Nco. You will notice that the excess of caustic soda actsindependently of the material itself, and, provided that onlythat amount of moisture be at any time allowed to enter theretorts, that can readily be absorbed, and can again begiven up by such excess of caustic soda, the material willpractically remain unaltered. I had, perhaps, better at this stage explain the tracingswhich are before you, as it will enable me to more clearlyconvey to you the meaning of the series of operationswhieh take place in connexion with the latter reaction. I intend, after having given you a brief description of theapparatus, to enter into further details, if time permits, and 314 THE JOURNAL OF THE SOCIETY OF CHEMICAL INDUSTRY. [April so, April 80,189a.] THE JOUBNAL OF THE SOCIETY OF CHEMICAL INDUSTRY. 315 also to demonstrate ou mi experimental scale by mean?, ofthe model before me, the mode in which oxygen is pro-duced, which I trust will be interesting to you, Description, Fig 2. is a general outline sketch diagramatic of the wholearrangement illustrating the mode cf operation. Figs. 5 and G are longitudinal and cross sections of oneof the dish-shaped retorts. The same letters of reference indicate similar parts in thedifferent figures. As shown in Fig. 2, I construct an apparatus mainlycomposed of an outer rectangular or otherwise suitablyshaped furnace, in which I place two or more series ofretorts of suitable size and construction, but which Ipreferably construct as shown in Figs. 5 and 6. These areformed of a shallow rectangular tray or case made of castiron, fireclay, or other suitable material, and are providedwith a moveable cover or lid which can be hermeticallyfastened to the tray by means of bolts,
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectchemist, bookyear1882
