Consisting of individual minerals flattened like a knife blade.
Hess
Trommel washer with lifting blades, which aid in disintegration and
scrubbing of passing feed. Pryor, 3
a. A Scottish term for a gray-blue carbonaceous shale that weathers to a
crumbly mass and eventually to a soft clay. See also:bind
b. A Scottish term for a hard, joint-free sandstone. Syn:blaize
AGI
An improved form of the Chenot process for making sponge iron by heating
crushed iron oxide and coal in retorts.
An apparatus for automatically discharging a sand tank having a central
bottom opening. It consists of a central vertical shaft carrying four arms
fitted with round plow disks. Sand is plowed toward a central opening and
discharged on a conveyor belt. Syn:Blaisdell vat excavator
Liddell; Fay
An apparatus for loading sand tanks. It consists of a rapidly revolving
disk with curved radial vanes. The disk is hung on a shaft in the tank
center, and the sand dropped on the disk is distributed over the entire
tank area. Liddell
See:blaes
A jaw breaker or particular kind of jaw crusher. Nelson
A furnace, the hearth of which consists of terraces rising from the outer
edge to the center. The hearth is circular and revolves when in operation.
Fay
a. Anhydrous ferric tellurite as reddish-brown microcrystalline (cubic?)
crusts from Goldfield, NV. Spencer, 3
b. Titanozirconate of thorium, uranium, calcium, iron, etc., described as
zirkelite from Ceylon [now Sri Lanka], but differing in chemical
composition and also apparently in crystalline form from the original
zirkelite from Brazil. Spencer, 4
The original crusher of jaw type. A crusher with one fixed jaw plate and
one pivoted at the top so as to give the greatest movement on the smallest
lump. Motion is imparted to the lower end of the crushing jaw by toggle
joint operated by eccentric. This machine, or some modification of it, is
used for reducing run-of-mine ore or coal to a size small enough to be
taken by the next crusher in the series during the first stage of
crushing. Liddell; Newton, 1
a. An interval in a borehole from which core was not recovered or was
lost, or in which no minerals of value were encountered. Long
b. See:bit blank
c. In powder metallurgy, a pressed, presintered, or fully sintered
compact, usually in the unfinished condition and requiring cutting,
machining, or some other operation to produce the final shape.
ASM, 1
d. A quartz plate with approx., or exactly, the correct edge dimensions,
but not yet finished to final thickness (frequency). Ordinarily applied to
pieces of quartz that are in the process of being machine lapped or that
are diced out, but not yet lapped. Am. Mineral., 2
See:bit blank
a. A textile material used in ore treatment plants for catching coarse
free gold and some associated minerals; e.g., pyrite. The blanket is taken
up periodically and washed in a tub to remove the gold concentrate, from
which the gold is recovered by amalgamation. CF:tabular
b. See:blanket deposit; blanket vein.
c. Soil or broken rock left or placed over a blast to confine or direct
throw of fragments. Nichols, 1
d. A thin, widespread sedimentary body whose width-thickness ratio is
greater than 1,000:1 and may be as great as 50,000:1. Syn:sheet
AGI
a. A horizontal, tabular orebody; manto; bedded vein. AGI
b. A sedimentary deposit of great areal extent and relatively uniform
thickness; esp. a blanket sand and associated limestones.
See also:blanket; blanket vein. AGI
A method for charging batch designed to produce an even distribution of
batch across the width of the furnace. ASTM
a. The material caught upon the blankets used in concentrating
gold-bearing sands or slimes; also the process involved.
b. Can. Staking but not recording claims. Hoffman
A blanket deposit of sand or sandstone of unusually wide distribution,
typically an orthoquartzitic sandstone deposited by a transgressive sea
advancing for a considerable distance over a stable shelf area; e.g., the
St. Peter Sandstone of the East-Central United States. Syn:sheet sand;
blanket sandstone. AGI
See:blanket sand