A grizzly type of belt consisting of two strands of endless chain
connected by through rods at each articulation, on which are carried a
series of plates or bars mounted in a vertical plane for the purpose of
rough screening while conveying. Syn:belt
a. An isometric mineral, 8[Co3 S4 ] ; commonly has small
amounts of Ni, Fe, Cu; forms a series with polydymite; crystallizes in
octahedra with cubic cleavage; metallic; steel gray tarnishing to copper
red; in quartz sulfide veins; a source of cobalt. Also spelled linneite.
b. The mineral group bornhardtite, carrollite, daubreelite, fletcherite,
greigite, indite, linnaeite, polydymite, siegenite, truestedite,
tyrrellite, and violarite.
Alternate spelling of linnaeite.
An unsaturated fatty acid, CH3 (CH2 )4 CH = CH(CH
2 )7 COOH , used as a collector in the flotation process.
Pryor, 3; SME, 2
An unsaturated fatty acid, CH3 CH2 CH = CH CH2 CH =
CH CH2 CH = CH(CH2 )7 COOH . Pryor, 3; SME, 2
Pertaining to porphyritic rocks in which the phenocrysts are arranged in
lines or streaks.
Byproduct of manufacture of linseed oil. Flotation agent used as
collector, emulsifier, or stabilizer for davidite, a uranium mineral.
Pryor, 3
Lanc. A strong, striped shale and a streaky, banded sandstone or
siltstone, interbedded in such a manner as to resemble a mixed linen and
woolen fabric (linsey-woolsey). CF:whintin
A horizontal supporting member spanning a wall opening.
Harbison-Walker
A process for making steel from cast iron; it resembles the Bessemer
process except for two important differences: (1) oxygen is used rather
than air and (2) instead of blowing the gas through tuyeres submerged in
the bath (as in the Bessemer converter), the oxygen stream impinges on the
surface of the molten iron. Newton, 1
See:tellurium
a. The digging edge of a dredge bucket. Fay
b. The cutting edge of a fixed-wing bit, such as the cutting edge on a
fishtail bit. Long
One who constructs lips and gates that support and regulate flow of molten
glass from furnace to glass-rolling machine. DOT
A syn. of rhyolite used by German and Soviet authors. Its name, given by
Roth in 1861, is derived from the Lipari Islands, in the Tyrrhenian Sea.
Not recommended usage; the much more widely used syn. rhyolite has
priority by 1 yr. AGI
Eng. The bottom edge of a shaft circle where it is open to the seam
workings. Fay
a. A common term applied to stationary screens installed in the loading
chutes over which the coal flows as it is loaded into railroad cars for
market. Mitchell
b. A small screen or screen bars, placed at the draw hole of a coal pocket
to take out the fine coal.
See:exinite
Term used to describe a microlithotype consisting mainly of the exinite
group of macerals and esp. of sporinite. Contains not less than 95% of
exinite (liptinite) with thickness (bands) of exinite greater than 50 mu m
recorded as liptite (sporite). Liptite (sporite) is a rare constituent of
hard coal. CF:vitrite
A process for reducing high-moisture-content lignite from up to 40%
moisture to about 10% moisture by pulverizing the raw coal, pelletizing
the 14-mesh top size, thermally drying, and then mixing with a binder. The
final product exhibits good handling and storage properties, and resists
spontaneous combustion.
a. A method of recovering sulfur by liquefying it under pressure and heat,
drawing off the molten sulfur, and allowing it to solidify. Fay
b. The heating of a solid mixture until one of the constituents melts and
can be separated from the solid remaining. Nelson
Air in the liquid state but usually richer in oxygen than gaseous air. A
faintly bluish, transparent, mobile, intensely cold liquid. Obtained by
compressing purified air and cooling it by its own expansion to a
temperature below the boiling points of its principal components, nitrogen
(-195.8 degrees C, at 760 mm) and oxygen (-182.96 degrees C, at 760 mm).
Used chiefly as a refrigerant and as a source of oxygen, nitrogen, and
inert gases (as argon). Handbook of Chemistry and Physics, 2