Society of Glass Technology · [Sheffield] · leaf 387
out 85°, preferably nearly 100°, soas to avoid the formation of the insoluble double salt CaSO^.KgSO^.HoO.Preferably the quantities are so chosen as to give a solution con-taining about 4—5 per cent. KoO, H. G. C. 8 JOURNAL OF THE SOCIETY OP GLASS TECHNOLOGY. 7. Sand Washing. (Brit Pat. No.… … ^ Fig. 1. through the apparatus towards the discharge end K in the oppositedirection to a stream of water. At the end E, the washed sand israised by revolving hollow arms i2 to a discharge cone L. Thedirty water overflows at an outlet U. The bearings of the shaftsF, N are arranged above the…
Glass
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