. A dictionary of arts, manufactures and mines : containing a clear exposition of their principles and practice. engaged - - 1 atom. Sulphate of soda - - 1 — Prolo-sulphate of manganese - 1 — Water - - - 2 — 4*59*09*52*25 17-82 35*64 37-62 8-92 25*25 100*00 These proportions are, however, very different from those employed by many, nay,I believe by all manufacturers; and they ought to be so, on account of the impurityof their oxyde of manganese. Yet making allowance for this, I am afraid that many of themcommit great errors in the relative quantities of their materials. From the precedi
. A dictionary of arts, manufactures and mines : containing a clear exposition of their principles and practice. engaged - - 1 atom. Sulphate of soda - - 1 — Prolo-sulphate of manganese - 1 — Water - - - 2 — 4*59*09*52*25 17-82 35*64 37-62 8-92 25*25 100*00 These proportions are, however, very different from those employed by many, nay,I believe by all manufacturers; and they ought to be so, on account of the impurityof their oxyde of manganese. Yet making allowance for this, I am afraid that many of themcommit great errors in the relative quantities of their materials. From the preceding computation, it is evident that 1 ton of salt with 1 ton of theabove native oxyde of manganese properly treated, would yield 0*59 of a ton of chlorine,which would impregnate 1*41 tons of slaked lime, producing 2 tons of bleaching-powder,stronger than the average of the commercial specimens; or allowing for a little loss,which is unavoidable, would aflbrd 2 tonsjof ordinary powder, with a little more slakedlime. Fig. 287 represents a retort of lead, well adapted to the evolution of chlorine from the. mixture of salt, manganese, and sulphuric acid, or from manganese and muriatic interior vessel is cast in lead, and it has round its bottom part a cast-iron steamcast. The salt and manganese are introduced by the aperture c, and the sulphuricacid by the syphon funnel f. The contact of these three substances is continuallyrenewed by the agitator or stirrer b, which consists of wrought or cast iron sheathedwith lead, c is the gas discharge pipe. The residuums are drawn off by the bottom?.ischarge pipe g. The healing case receives its steam by the pipe /(. The chlorine gns,fig. 288, is conveyed from the retort b into the chamber i, by the tubeEKE. This chamber is divided into four compartments, to receive the gas disengagedfrom four retorts, like the above. The bottom of it is covered with a stratum threeor four inches thick of quicklime, newly slaked and sifted, whic
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Keywords: ., bookcentury1800, bookdecade1840, booksubje, booksubjecttechnology
