A fine spongy variety of hematite. Fay
A furnace in which iron is smelted or worked in any way.
Standard, 2
A variety of hematite; specular iron. See also:specularite
a. See:gossan
b. See:safety hat; hardhat.
c. A weathered ironstone outcrop. Pryor, 3
See:ferrosilite
a. An iron worker; a manufacturer of iron; esp. one engaged in the
processing of iron. Webster 3rd
b. A worker who weighs out ground iron ore and adds it to slurry or
dry-ground rock as it goes into the cement kiln. Webster 3rd
c. An apparatus on wheels for supporting a glassblower's pontil while
blowing large cylinders, as for window glass. Standard, 2
Person who conducts or manages the founding or manufacture of iron, esp.
on a large scale. Webster 3rd
A micaceous hematite. See:biotite
See:ferrimolybdite
An important iron ore (chiefly hematite) deposit in the Middleback Ranges
area of South Australia. Nelson
See:fayalite
Ferruginous rock containing one or more minerals from which metallic iron
may be profitably extracted. The chief ores of iron consist mainly of the
oxides: hematite, Fe2 O3 ; goethite, alpha -FeO(OH);
magnetite, Fe3 O4 ; and the carbonate, siderite or
chalybite, FeCO3 . See also:bog iron ore; limonite;
kidney iron ore; magnetite; siderite; hematite;
prereduced iron-ore pellet. AGI
a. A common ore of iron, sometimes prepared as a fine powder for use by
drillers as a drill-mud heavy loader. Long
b. A common compound of iron and oxygen; e.g., rust. Long
The basic constituent of the ferromagnetic spinels or ferrites. FeO, Fe
2 O3 , and Fe3 O4 have melting points ranging
from that of FeO at 1,420 degrees C to that of Fe2 O3 at
1,565 degrees C. Used extensively for producing colors in glasses, glazes,
and enamels. Iron and iron oxides produce brown or reddish colors in
ceramic mixtures if they are fired in an oxidizing atmosphere, and
greenish or bluish colors if fired in a reducing atmosphere. Iron oxides
are fluxing and coloring materials. Larger particles produce brown or
black spots, which, particularly in whiteware, are undesirable. Much care
is taken to remove iron and iron oxides from the raw materials and from
the bodies used for whiteware manufacture.
Lee; Handbook of Chemistry and Physics, 2
A general terrm for a hardpan in a soil in which iron oxides are the
principal cementing agents; several types of iron pans are found in dry
and wet areas and in soils of widely varying textures. AGI
See:vivianite
A laborer who removes iron from cars, sometimes breaks it, and piles and
classifies it according to grade. Fay
Mixture of portland cement and granulated blast furnace slag.
Bennett
See:pyrite
A process used in the treatment of lead ores.
See also:precipitation process
The reduction of prepared ores of iron to metallic iron, as in the blast
furnace. The reduction and purification of semirefined iron, such as pig
iron, or a mixture of pig iron, scrap iron, and scrap steel, to form
substantially pure iron or steel, as in the electric furnace, open- hearth
furnace, puddling furnace, or Bessemer converter. Henderson