NJDEP - NJGS - First Annual Report of the Geological Survey of the ...

'40• "Them are other kinds of ore o_eurring ifi sni_iller quanti-•ties. t'subjoin analyses of the most interesting :'_• S i'owD ,Ore, Restncue Ore, (_t rbo Silicate o/M_Jsg'ae_¢ :Peroxide Iron, . 30 40 I'rotoxid0 Manganese, . 34Csrb.Lime_ 35 12 Lime, , USilica, . . . 30 80 Silica, . . 33Alumina, . . 3 3 . Alumina, . .. .. 1Oxide Manganese, . 15 Protsxide Irbn, 1.5Carbonic Acid, . , 1898 100 ". 98.5• "These ores, though not unusually rich, are remarkable forthe facility and rapidity of their reductioz£ in th6 smeltingfurnace.."The largo quantity of the best flu±ing materials, such asmanganese and carbonate of lime, contained in the-ore themselves,renders necessary the small addition of but ten per cent.of fluxing matter in woeking the ores in the furnaces. _"In one of our furnaces (forty.two feet high and eighteon•feet across the boshcs), we have made two hundred and thirtytons of pig iron per week for six weeks in sueesssion_ withone and a half tons of coal per ton of iron ; and the yield fora single week in one furnace hes been as high as two hundredand fifty-one tons, an amount unprecedented in the annals ofEuropean furnaces. A considerable proportion: of the ironproduced is of the kind termed ' lamellated." This iron is atype of the perfect combination of carbon and iron, with thecarbon in larger proportion than in any other kind of.iron.•This species presents in the fracture a silvery brightness , andis beautifully crystallized, some of the crystals having brilliantfaces, measuring two inches across. Another vhricty is the'radiated/which presents a fibrous fracture, the fibres radiatingfrom the centre to the outside of the pig. ,"The pig iron" made at the furnace is puddled at the'RollingMill of the Company, and the anthraci_o'bldoms thuh madeare converted into the various kinds of bar iron, rails, &o. AtL_NEW JERSEY GEOLOGICAL SURVEY