. Journal . ironand manganese were precipitated by addition of bleaching 750 JOURNAL OF THE SOCIETY OF CUEillCAL INDUSTRY. [June SO, i9os. powder and marble dust. and electro-negative metals (tozinc) by zinc dust. The clear solution then contained, onthe average, 20 per cent ol line chloride, 22 percent, of-0<liiiiii chloride, 0*05—0*06 per cent, of sulphuric acid,and traces of lead, iron, and thallium. It was acidifiedwith hydrochloric acid free iron-, arsenic, and subjected tories of V shaped rata, shown in plan inFig. 1. Each \.it contained eight anode cells and -even sides, and passed o
. Journal . ironand manganese were precipitated by addition of bleaching 750 JOURNAL OF THE SOCIETY OF CUEillCAL INDUSTRY. [June SO, i9os. powder and marble dust. and electro-negative metals (tozinc) by zinc dust. The clear solution then contained, onthe average, 20 per cent ol line chloride, 22 percent, of-0<liiiiii chloride, 0*05—0*06 per cent, of sulphuric acid,and traces of lead, iron, and thallium. It was acidifiedwith hydrochloric acid free iron-, arsenic, and subjected tories of V shaped rata, shown in plan inFig. 1. Each \.it contained eight anode cells and -even sides, and passed out at the top of the opposite , was only a circulation past the cathode-, but tin-solution could pass beneath the anode cells. The acidity ofthe electrolyte was maintained al cos —012 per cent, ofbydrocblorii -0 • OS grm. of acid being added par hour dui ctrol* sis. [he propoi zinc in the bath was not allowed to fail below 2 i elA current density of 100 amperes per square metre wai Fig. i. cathode compartments ; the former were separated fromthe latter by diaphragms of nitrated cloth, and were closedin on top. The anodes, <l, were of hard artificial carbon,whilst the cathodes, a, consisted of discs of zinc or iron,fixed vertically, by mean- of iron sleeves, h, to the shaft, current was transmitted through the conductors, i, /.■.The electrolyte entered each vat on one of the longitudinal Fig. 2.
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectchemist, bookyear1882
