Explosives . Fig. 34. View showing Arrangement of Units in Rows (from Arms and Explosives). allowed to rise in the pans to the proper level. The nitrating acid is cooledin summer and warmed in winter, so as to maintain the same temperatureof final nitration all the year round. The composition of the nitrating acidis 70-5 per cent, sulphuric acid, 21 per cent, nitric acid, 0-6 per cent, nitrous 170 EXPLOSIVES acid, and 7-9 per cent, water: the quantity in each pan above the bottom]»lat- ~ - 0 lb., and below the plates i> an additional r> lb. A charge of2 lb. of cotton waste is then immers
Explosives . Fig. 34. View showing Arrangement of Units in Rows (from Arms and Explosives). allowed to rise in the pans to the proper level. The nitrating acid is cooledin summer and warmed in winter, so as to maintain the same temperatureof final nitration all the year round. The composition of the nitrating acidis 70-5 per cent, sulphuric acid, 21 per cent, nitric acid, 0-6 per cent, nitrous 170 EXPLOSIVES acid, and 7-9 per cent, water: the quantity in each pan above the bottom]»lat- ~ - 0 lb., and below the plates i> an additional r> lb. A charge of2 lb. of cotton waste is then immersed in the acid, handful by handful, alu-minium dipping-forks being used for the purpose. When all the cotton wastehas been pushed under the surface of the acid, perforated plates in segmentsplaced on the top of it. care being taken that all cotton waste is below. Plumbing Installation for Displacement Plant from Ann* and Explosives). the surface of the acid, and a film of water at a temperature from 5 period the cork leading t (he gauge-box is opened, andthe waste arid allowed to run off at the rate of about IT lb. a minute. Water,cooled, if necessary, is run on the top of the perforated plates, through the MANUFACTURE OF NITROCELLULOSE 177 distributor, at an equivalent rate. The major portion, ariiounting to about80 per cent, of the total waste acid, is returned to the acid store tanks to berevivified with Nordhausen sulphuric and new nitric acids. The compositionof this waste acid is 72-70 per cent, sulphuric
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Keywords: ., bookcentury1900, bookdecade1910, bookidexp, booksubjectexplosives
