. Journal. The kiln or furnace consists of a large cylinder 1 linedwith brickwork and refractory material, and rotated bymeans of a toothed flange on its exterior, gearine with apinion mounted between rollers (not shown) resting onthe blocks 3. The furnace is divided longitudinally into anumber of compartments 8, communicating with eachother by the passages 9. The two dust-chambers 10 atthe ends of the furnace are provided with doorslO throughwhich they can be cleaned. The pyrites is introduced intochambers 8 through ports 11 from hoppers 12. and thefurnace is then set in rotation and heated t
. Journal. The kiln or furnace consists of a large cylinder 1 linedwith brickwork and refractory material, and rotated bymeans of a toothed flange on its exterior, gearine with apinion mounted between rollers (not shown) resting onthe blocks 3. The furnace is divided longitudinally into anumber of compartments 8, communicating with eachother by the passages 9. The two dust-chambers 10 atthe ends of the furnace are provided with doorslO throughwhich they can be cleaned. The pyrites is introduced intochambers 8 through ports 11 from hoppers 12. and thefurnace is then set in rotation and heated to bright redness,the pyrites being kept in continual agitation and subjectedto a rubbing action by the projections 16 and 17 JOURNAL AND w I RE Ci VD 1231 (Fig. 2) of refractory material, whereby fresh surfaces areexposed to the air which is admitted in regulated quantitiesthrough openings in the wall of the furnace registeringwith openings in the outer casing, ami which passes intoohambers 8 through passages 9. The gases produced bythe roasting arc drawn through the dust-chambers 10 and18, and led to the Glover tower. The roasted material iswithdrawn through ports 11 by means of the draw-plate13 (Fig. 2).—A. S. Carbonic Acid ; Process and Apparatus for the Solidifica-tion 0f . H. S. Elworthy. Fr. Pat. 356,603, Jan. 31, carbon dioxide is solidified in jacketed vessels,wliuh serve as moulds, by the aid of the evaporation andexpansion of a part of the liquid, conducted in two tirst phase occurs in the outer of two concentric coils,by liberating a portion of the liquid, so as to partially coolthe remaining liquid in the inner coil; and the secondphase consists in the partial liberation and evaporation ofSquid in
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectchemist, bookyear1882
