. Journal . nce it is pum|K-d up to the main aqna feble reservoirabove the level of ho caliche boiling tanks, into which itis run, to carry on the round of nitrate extraction andcrystallisation again. The iodine laya at the botti n I - wooden Muk- i- -wept out through u plug-hole, and short « lea -I .mi into a small ak, in which is • filter cloth. Tin iodine is hen Wl shed with water to remove nitrate andother saline constituents. Iodine is very insoluble in watei—aid to he 1 in 7,u0t of watei -hut 1 doubt if it is even this unlet - given iic of the iodine to form into hydriodic acid, which it
. Journal . nce it is pum|K-d up to the main aqna feble reservoirabove the level of ho caliche boiling tanks, into which itis run, to carry on the round of nitrate extraction andcrystallisation again. The iodine laya at the botti n I - wooden Muk- i- -wept out through u plug-hole, and short « lea -I .mi into a small ak, in which is • filter cloth. Tin iodine is hen Wl shed with water to remove nitrate andother saline constituents. Iodine is very insoluble in watei—aid to he 1 in 7,u0t of watei -hut 1 doubt if it is even this unlet - given iic of the iodine to form into hydriodic acid, which it does slowly if allowed to stand too long in couttct witl water. After the iodine i- well washed it i< put in filti-i clothunder a screw press, and the water pressed ml oi it. when it forms iuto cakes; these .-.,!,.- ,<•■ d from the md pit iii the retort, which is a simple cylinder, tapering at the further side in a conicalshaped form, with a delivery hole of about il ms. diameter. J. — >: III I MINI. RETOltT IN lolINK Against the outlet of this cylinder -tor unlaw; pottery drainpipes arc luted with clay. Afte: the retort itilled with the iodine from the pre-s, !.,- frost Iclamped on. and the lire underneath sin ted slowly. As a rule, the iodine distills quietly and satisfacUOccasionally, however, explosions have taken place,retort hasbteu blown to piece-, and the md in di«|a magnificent purple cloud. These explosions have attributed bj some to the fonnation of iodidfrom the presence of ammoniaral salt- in the ioduuhowever, is doubtful, as it is dillicult toammonia could come from. It is more likely thatexplosions lmve been due to the iodine eondensisg the delivery noszle of the retort into ,i solid n sealing the outlet. This would be due to the had sithe retort over the fire, allowing the nozzle encold. The retort, when cool, can he itnelampe
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectchemist, bookyear1882
