February 2006
Supply Lines
Fine-tuning
Classification
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Features such as re-blending, remote monitoring, and extreme cleaning improve the modern classification process.
GreyStone
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Eagle Iron Works
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Sturtevant
It provides an alternative to wet washing 200 mesh fines from crushed stone — without water — which helps with water conservation, reduced land requirements, and eliminates the use and cost of settling ponds as well as dredging and dredging-related problems, according to the manufacturer. Another benefit includes a secondary saleable fine product such as aglime or filler. Stationary units are available up to 800 tons per hour. Click 4 on Reader Service card
Kolberg-Pioneer
Click 11 on Reader Service card Fisher Industries
The classifier comes standard with an automatic electric grease system to assist in plant maintenance and ease of use, according to the manufacturer. Click 6 on Reader Service card
McLanahan Corp. McLanahan Corp.’s Sand Manager Classifying Tank features modern and innovation design features, according to the manufacturer. The classifying tank uses a simple method to remove excess water, slimes, or undesirable grain sizes from natural or crushed sand feeds. It separates and re-blends the grain sizes according to a “smart” computer program, and allows the user to monitor the system through a remote-access monitoring package and touch screen controls. The system is able to make multiple products simultaneously from the same feed. It also uses a valve seat that eliminates leaky, corrosive nuts and bolts and a solid control enclosure keeps deck lids and railings rust-free, according to the company. Click 10 on Reader Service card Durex Products, Inc.
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Buell
Click 9 on Reader Service card allmineral Llc
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LTP Group Inc.
The In-Line Recipe concept is a hybrid plant, which can produce concurrent products of different gradations to maximize yield while producing the consistent products, according to the manufacturer. Click 7 on Reader Service card
Phoenix Process Equipment
Co.
Click 8 on Reader Service card Aggregate Innovations,
Inc.
Click 1 on Reader Service card Reprinted from Aggregates Manager
Magazine |
GreyStone’s
Aggre-Spec V6 sand washing and classifying plant controls
re-blending system can re-blend up to two-spec products
simultaneously and increase production by up to 15 percent,
according to the manufacturer. The system also holds tight product
specifications to reduce the possibility of out-of-spec material and
automatically monitors feed material to warn the operator of
potential mix or mechanical problems. A report module also collects
data, including fineness modulus yield, feed gradation, and output
gradation, and stores it in a spreadsheet format for flexible
reporting.
The
4-Cell Water Scalping-Classifying Tank from Eagle Iron Works
features an adjustable inlet gate with flow-straightening vanes and
a raised valve bridge that is 12 inches higher than the standard
valve bridge, according to the manufacturer. Each station has four
product valves with two material-sensing paddles. The classifying
tank has 600-tons-per-hour maximum, based on feed gradation, and a
capacity of 4,200 gallons per minute at 150-mesh split.
Additionally, the tank has flanged discharge pipes with rubber wear
liners.
Sturtevant’s
Whirlwind Air Classifier is self-contained — requiring no process
dust collection equipment — and incorporates an internal fan and
rejecter blade classification system. 
Kolberg-Pioneer
has released a new 7000 series of classifying tanks. The series
provides an open tank design that eliminates all internal cross
supports and provides for more uniform material, according to the
company. The new design features verifiable and real-time valve
function information to the operator via an I/O module, profi-bus-based
wiring system, and a monitoring controller. The series is available
in portable, semi-portable, and stationary configurations with sizes
ranging from 8 feet by 20 feet to 12 feet by 48 feet. 
The
patented Fisher Air Separator from Fisher Industries is 13 feet
long, comes in either stationary or portable models, and can process
up to 150 tons per hour of fines. 
The
Dur-X-Ultra Flex from Durex Products, Inc. prevents screen blinding
in moist, sticky applications, according to the manufacturer. With a
self-cleaning rubber screen media, it said to combine resilience
with abrasion and tear resistance and has the extra flexibility
needed to prevent sticking problems and keep wet material from
blinding over screens. The screening media is used in medium- and
light-duty applications and has been proven in the field to last 20
times longer than alternatives, according to the company. It is
offered with square openings ranging from 2.5 mm to 11 mm, and is
available in modular or tensioned screens. 
The
Buell Division of Fisher-Klosterman’s portable air classifier system
can remove 200-mesh from manufactured sand. The system — which is
fully contained on a single, 48-foot-long trailer — is designed to
process an inlet feed rate of 75 tons per hour. The system includes
hydraulics, allowing for setup in about an hour. It consists of a
single classifIer, two cyclones, a fabric filter, a fan, a
compressor, and two transfer conveyors. A single control panel
includes starters for all for the equipment. 
The
allmineral Llc afflux-system allows fine-grained materials, such as
sand, to be cleaned to extremely high purity levels, according to
the manufacturer. Sand and water slurries from 500 to 8,000 gallons
per minute are treated in a single unit without thickening.
Additionally, the separator offers excellent concentrating
efficiency with low energy and wear costs, the company says. The
system has a 0 by 3/16 inches feed size, a 99.99 percent purity
rate, and a capacity of 25 to 1,000 tons per hour. 
Phoenix
Process Equipment Co.’s Model GS Jig separates lighter-weight,
deleterious materials from gravel. According to the manufacturer,
the equipment produces high-quality gravel throughout a wide range
in raw material quality. The gravel separator uses precise,
air-pulsed jigging technology to separate wood, lignite, clay,
shale, or other deleterious materials from gravel. Features include
easy adjustment for adapting to changing feedstock, compact design
to save valuable space, and low investment cost to free up capital
for other projects. 
Aggregate
Innovations, Inc.’s Computerized Sand Re-blending Controls are
designed to make consistent, in-spec stockpiles, even in tough
conditions with difficult specifications, according to the
manufacturer. The controls can be installed on any manufacturer’s
tank. Both the CSR and CSR-Multi tank controls are able to produce
products with difficult specifications such as golf course sand;
generate daily, weekly, month, or customized reports on classifying
tank activity; and predict the tonnage of material.
