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Full text of "The Flow Of Gases In Furnaces"

MISCELLANEOUS TABLES

MISCELLANEOUS TABLES
TABLE 2

183


	Chamber
	Volume

Operation
	Cubic Meters per 1000 Kg. of Coal Burned per Hour
	Cubic Feet per 1000 Pounds of Coal Burned per Hour

Kilns, Ordinary brick .........
	1000
	16 018

Porcelain ............
	120
	1 923

Refractory brick .....
	35
	560

Glass, bottles .......................
	35
	560

Puddling furnaces .....
	11
	177

Crucible steel furnaces .........
	3
	50

Rcverberatory furnaces, Iron melting.
	2
	35

Steel melting .....
	1
	17


	
	


	Ratio between Grate Area and Hearth Area

Roasting of ores, etc ..........
	15

Copper inciting ................................
	5

Iron molting
	3

Puddling ...                                         .                     .             ...
	2

Stool melting ........................................
	1

From Le Chatelier, Le Chauffage Industriel.
TABLE 3
BESSEMER CONVERTERS
Blast pressure about 25 pounds per square inch = 1 kg 76 per square centimeter-
Blast volume about 900 to 1100 cubic feet of free air per ton per minute =
25 m3 50 to 31 rn3 20 per tonne.
Blast pressure must be about seven times the pressure due to the static
head of the molten metal.
Molten metal weighs about 430 pounds per cubic foot=6888 kg per cubic
meter.
Depth of metal in vessel about 12 inches = 300 mm.
Static head of metal about 3 pounds per square inch = 0 kg 21 per square
centimeter.
Tuyere blocks are about 24 inches=600 mrn in depth.
Tuyere holes an* about 0.5 inch = 12 to 15 mm diameter.   Five to 7 holes