Transactions . Sweden cost of coal = $ perton; wages, 80 cents per shift. $ $ 9 27 7 18 See Stahl und Eisen, May 4, 1910,p. 759. 10 09 99 16 5 b 15 to + Depretn.— ,6, 7 See Stahl und Eisen. Feb. 9, 1911,p. 245. 30 to50 ; See StaM und Eisen, Aug. 19, 1908,pp. 1196-9. 53 38 16 S 23 & 6 per cent, of coal for ignition. c 6 per cent, of coke breeze or 10 per cent, of low-grade 6: Coal consumption in this column refers only to that of sintering consumption for steam and power for other processes are included
Transactions . Sweden cost of coal = $ perton; wages, 80 cents per shift. $ $ 9 27 7 18 See Stahl und Eisen, May 4, 1910,p. 759. 10 09 99 16 5 b 15 to + Depretn.— ,6, 7 See Stahl und Eisen. Feb. 9, 1911,p. 245. 30 to50 ; See StaM und Eisen, Aug. 19, 1908,pp. 1196-9. 53 38 16 S 23 & 6 per cent, of coal for ignition. c 6 per cent, of coke breeze or 10 per cent, of low-grade 6: Coal consumption in this column refers only to that of sintering consumption for steam and power for other processes are included in Column figures under C are reduced to a common price of $ per ton. Column 7 gives wages : under A, according to constructing works figures ; under B,under the assumption of an average daily wage per workman of $ Column 10 gives cost of production : under A, according to constructing works figures ;under B, comparative figures of values reduced to a common basis. 328 THE SCORIA THE SCOBIA PROCESS. 329 dumped, unless required for immediate use. In the installationillustrated, particular attention has been paid to an arrangement bywhich the switching operations, by means of a traveling platform,can be carried out in such a manner that the trolley cars can bemoved only in entire trains. It will be noticed that the manufacture is almost automatic. If thenecessary amount of steam is provided for, there is nothing in theprocess itself that requires supervision. The transportation is practi-cally all mechanical, the actual handling of the briquettes being nec-essary only once: namely, in transferring them from the press to thetrolleys before they are hardened. The labor required for an instal-lation of two presses consists of a foreman and 14 men, includinglabor for steaming drums, grinding and conveying machinery, presses,hardening kilns, and trolley transportation.
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Keywords: ., bo, bookcentury1800, bookdecade1870, booksubjectmineralindustries
