No coin nor oath required. For personal study only.
CHEMISTRY AND INDUSTRY
and 2.0 a t the 2-in. nnd l&in. scrcciis, rcspcctivcly, tlic corresponding shnttcr indiccs shall be marked witli an nstcrisk, niid if it is desired to base any conclusion, or to tnkc nny action upon tlic result, n further scrics of a t lcast two tcsts shrill, if possible, be mndc, niid tlic results tlicrcof avcragcd with tliosc of tlic original scrics.
A recent lieport* iswctl by t,hc Northern Coke Rcscnrcli Coininittee outlines sonic of tlic more importnnt rcsults \rliicli linvc bccn obt,nincd in tho Cokc Rcscarcli rdoratory n t Ariristrong Collrgc, Ncwc:istlcon-'l'ync, and a t vnrious works during the ycnr cnding Dcccnibcr 31, 3023. Tlic rcport states that cokes obtnincil froin " bos tcsts " ngrcc mcll with tliosc inndc in full-scale ovcn cliargcs, but '' bag tcsts," wliilc giving good rcsu1t.s on tlic ~vliolc, arc lcss reliable. Cokc froni " bos tcsts " tcnds t.0 bc lnrgcr in sizc thnn tlic corrcspontling full-sc:.lc oven colccs. Uncompresscd cokcs Iinvc bccn slio\vn to ljc inore porous, lnrgcr, and of liighcr sliattcr indcs t.lian comprcsscd coke;;. Xsaminntioii of gas colics niadc fi.oni tlic sninc conl in vcrtical and horizontal retorts indicatcd that " liorieontnl " colics wcrc Iarncr, (lcnscr, and of l~jglicr shnttcr iiidcs t h n i i C' vcrticaf,? cokes. ~snrninntioii of tho irdiucncc of tlic siec of C O : ~ on thc rcsulthg colic lies shown tlint up to a ccrtniii dcgrcc of fineness tlic shnttcr iiidcs of a cokc incrcascs, with dccrcasing size of conl particlc,
๐ SIMILAR VOLUMES