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Full text of "Metallurgy Of Cast Iron"

FLUXING   AND   SLAGGING   OUT   FURNACES.
To afford some knowledge of the chemical relation which slags bear to the iron produced, the analyses in Tables 11, 12, and 13, obtained by the author, are presented:
TABLE   II — ANALYSIS   OF  FOUNDRY  IRON.
Silicon.	Sulphur.	Manganese.	Phosphorus.
2.09	•013	•25	.769
TABLE   12 — ANALYSIS  OF  SLAG.
Silica.	Alumina.	Ivime.	Manganese.	Magnesia.	Iron.	Total.
33.08	19 74	44 • 74	.11	1.44	.40	99-51
Table 13 is slag selected from the compilations of different authors to present a knowledge of the character of slag produced from different ores and classes of fuel. The first and second columns are slags produced from raw coal smelting at Dowlais, Wales, presented by Riley. The first column is a slag from gray iron and the second from white iron. The third column is a slag from coke with Cleveland ores making gray iron, by .Bell. The fourth is from anthracite, making gray forge iron, at liloomington, N. J., and the fifth is from charcoal iron made at Josberg, Sweden, by Sjogrcn:
TAW.K   13 —ANAI.YSKS  OF  ULAST  FURNACK  SLAGS  FROM   DIFFERENT ORKS   AND   Ft! 1C I,S.
Silica ....................................	i	2	3	4	5
	3«-<|8 J5-I3 32,S.» o . 76 I . (>2 7./14 2.4»,{ I . < ) 2	43-<>7 i.l AS 2H.<)2 2 53 1-37 5.S7 I.«)0 I.S4	27 (R 22   2« 40   12 o Ho O   20 7 27 2 on	42.17 13.59 33-02 1.28 0.27 8.31 0.64	61.06 5-38 19.81 3-29 2.63 7.12
					
Lime .................................... Protoxide of Iron ..... . ...........					
					
M'liriH'Hifl, •                ..... ••					
Sulphide of Calcium      .					
Alkalis  .....          ........					
Phosphoric Aci<l.... ..............	(1.15				
	100.54	iuo.35	100.35	99.23	99-29