Explosives . Fig. 33. A Unit of Four Pans (from Arms and Explosives). perforated segment plates making a complete disc about 1 inch less than theinside diameter of the pan, are placed on the bottom. Aluminium fumehoods, which are connected to an exhaust fan, having been placed on the fourpans, the stone-ware cock on the acid sirpply pipe is opened, and the acid. 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
Explosives . Fig. 33. A Unit of Four Pans (from Arms and Explosives). perforated segment plates making a complete disc about 1 inch less than theinside diameter of the pan, are placed on the bottom. Aluminium fumehoods, which are connected to an exhaust fan, having been placed on the fourpans, the stone-ware cock on the acid sirpply pipe is opened, and the acid. 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
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Keywords: ., bookcentury1900, bookdecade1910, bookidexp, booksubjectexplosives
