Metallurgy Of Cast Iron

LOSS <>!•' IKON BY OXIDATION IN Cl'l'OLAS.
which the iron was chunked in heats Nos. 3, 4, 5, 6, 7, and 8, as well as those shown in Tables 65 and 66, where rolls are cited. The loss from heats Nos. i and 2 ran about 5 per cent, for the sand rolls and 3 per cent, for the chilled iron. When the first two heals are compared with those of the chilled iron by the
TABLE 63.—COMPARATIVE. OXIDATION TF.STS OK I'K< >TK< TKI > A,\I> IM'KOTKrTKD IKON St: KF.U.'KS.
Heat Ural Heat Heat Heat He-at Heat Heat
No. l. No. ... No. J(. No. -|. No. .s. No. <». No.' >•. No. S.
1 £ •f. t/. ,. v. «; ,:
Kind of Metal Charged. 3^ l~ 1 1 "o "o o "o
•j* •i'J 5 ''J '•J 5 D 5
Kiud ol' protee V""
tion used on Sand Sand I,ead bead bun*" la'nir Sit. si I.
coaled rolls Scale. Sea Us Wash. Wash. Wash. Wash. Soda. So«la.
Weight ol nn ""
protected and
prut c e t e d 11! 11)> '•.'.. | j,, Sj ]|(. II ;-,, I ]|,.t| 'V, 111', n
riiai j.',< 'S ......... Blast put on ...... ~ II) III'. .',. !'"> .'. r; , .,, .i "t ', ! ; '"
Protected iron
ninninj', ....... .'•• |.| 1, /'. •'. 't' .; ''.'i .'. ""'l .; '"»'i' '. ',-f|i
If 11 pro! eeted
iron t iinnm^..,. .V \.\ i . i ' ' • ,• ."i . '• ' • ' i . i ' " ' .;. ' "» f, ',;
IM'otrrlrd iron
all down •j.i..;1 - '. 1" 1 "O» •' .it1 • .v i'.'1 ' .', II' ' /. ••" 1 "."'i
Un protected '.
ire>ti all down •l.oi i. ".',' ' .- .j .,,» ,1 ^7 /. »'»U .{ lit!
Wright of |>io : terted iron oh ' j*»S Jhs, tained........ ! ,PI/
-si Ib
<-d iron ........ n »»/. ! r{ <»/. f. <»*
J/>s.s of utipro .ilbs.i r?lbs,"i .'Ib.. | lib : ,; ibs \lh«< ' .« ifr. '{(.-, te<.'ti.'d inuj......! »j o/. ! i.j »»/. i , o/ 11 n/ 'i «».• • o/ pi/ i«.o/
* This has rel'eirnee <o thr ,sand that burned a stale on the sand r.i-,1 toll, and whieh were eharj'.ed on one side, u htle the elullerl tolls \\ejo ehau;« d on the oth«T, of the ettpola, tor heat-, No-, land '. 1-or Itfat-. No-. •; io ;=; all t lull Hills \vc ie n-,cd jot both sides, the only «li!l'i'frui'i' ln-ill>' the .lulls i<»i itttc side xvei rotated as d«.:st.:t ihed on pa^es ,u •„ ,i j and ;i,nds pe!' (on of iron, or a ratio of 7.7 iron to i coke, in onler to deliver the melted iron in the same condition as on an ordinary day. In other words, an additional fuel consumption <>!' a little over 3,h per cent, is needed under the above conditions...................... 3,658 units £