Chapter L

Labour for blast furnaces, 130.
" refining furnaces, 224.
" reverberatories, 100.
" roasters, 69, 70, 72, 75, 78, 79, 177.
Ladles, 166.
" for refining furnace, 224–226, 242.
Ladling of copper, 224.
Lake copper, 40, 42, 44, 45.
" Superior ores, 43.
Lamb, S., 24, 34.
Lambert, 7.
Large reverberatories, 81, 87, 88.
Launders for matte, 116.
" for slag, 164, 165.
" -castings, 166.
Law, E. F., 34.
Lawrie, 34.
Lay-out of blast-furnace plant, 156.
Leaching processes, 67.
Lead anodes, 236.
" in copper, 20, 23, 30, 32, 44, 217.
" " -matte, 37, 215–217.
" in blast-furnace fume, 168.
" sulphide, Roasting of, 66.
Leakage of air in blast-furnace blowers, 141, 174.
" of air in reverberatory furnaces, 83, 85, 86.
" in electro-refining, 228.
" in water-jackets, 139, 158.
Length of blast furnaces, 131, 135.
" reverberatories, 89, 91.
Lengthening of blast furnaces, 124–127, 131.
Levelling of charges in reverberatory smelting, 92.
Levy, D. M., 216.
Liberating tanks, 236.
Lime in blast-furnace charges, 151–153, 180.
" blast-roasting process, 58.
" pyritic process, 180, 181, 186–188.
" roaster charges, 76, 77, 88.
" slags, 149–151, 153, 180.
Linings for converters, 192–194, 197–201, 211–216.
Lining of converters, 201–204.
" settlers, 162, 163.
" tanks, 228, 229, 234.
Liquation of sulphides, 172, 182, 194.
Liquid fuel for reverberatories (see Oil).
Lloyd-Dwight sintering machine, 59.
Loam lining for settlers, 162, 163.
Locomotive work, Copper for, 20.
Losses by fines in the blast furnace, 55, 110.
" by fines in the reverberatory, 110.
" in blast-furnace smelting, 115–117, 125, 146, 152, 179.
" in converting, 195, 200, 204, 209, 210, 212, 214, 222.
" in pyritic smelting, 179–181, 186, 188.
" in refining, 116, 221, 222.
" in roasting, 62, 67, 68, 177.
" of heat (see _Heat losses_).
Louis, H. (and Schnabel), 243.
Low-grade mattes, 181, 200, 203, 204, 212–214.
" ores, 52.
Lugs of electrodes, 226, 229, 230, 236.
Lump ores, Roasting of, 66, 67.