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Full text of "Metallurgy Of Cast Iron"

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Standard coke.Connellsv'le Walston ...............................	!		
II	Dry.	Grams in one cubic inch.	
Cn	Wet.		
sr	Dry.	Pounds in one cubic	foot.
CnOl	Wet.		
-J C7\	Coke.	Percentage.	
~«>	Cells.		
H	Compressive  strength  per inch % ultimate strength.		cubic
S|	Height  of furnace   charge ported without crushing.		sup-
M _     } Order in cellular space.			
ww	Hardness.		
11	Specific gravity.		
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£! terms hard and dense do not mean the same thing. Coke can be dense but soft. The following table, No. 2, of physical tests, by Mr. John Fulton, will illustrate the crushing strength of coke with other properties. A chemical analysis of the same coke by Mr. A. S. McCreath and Mr. T. T. Morrel is seen in Table 3, and which is taken from an article by the late Joseph D. Weeks of Pittsburg, which appeared in the Pennsylvania Annual Report of the vSecretary of Internal Affairs, 1893. In referring to the coke tested, Mr. Fulton says: " These tests show a compact, hard-bodied coke, harder than the average Connellsville standard. This coke has been carefully prepared and cannot be distinguished from Connellsville coke. The cells are a little less than the Connellsville, but the difference is not large enough to induce any marked change in blast furnace. It has proved an excellent fuel for this and kindred uses.''