Aggregate Washing | Sand Plants

Sand Plants

A range of solutions from Terex Washing Systems which include the Finesmaster Compact and Bucket Wheel range and also the Trident mobile screw recovery wheel option.

In addition we can offer:

  • GreyStone Fine Material Dewatering Screws
  • GreyStone’s Aggre-Spec III computer-aided sand re-blending system

FM UltraFines™

The Terex® FM UltraFines™ is a crucial step in efficient management and recovery of ultrafines sand from waste water streams, produced from washing processes. This ultra-fines recovery unit can process up to 450m3 per hour of slurry recovering material as low as 40 micron, thus reducing the volume of solids reporting to storage ponds or water treatment plants.

Bringing together a centrifugal pump, a cluster of 4 hydrocyclones and a high frequency dewatering screen on one chassis. The FM UltraFines™ also boasts a uniquely designed conical tank and anti-turbulence system, which is essential in the process of ultra-fines recovery.

Features & Benefits:

  • Large volume conical tank with bolt on sides
  • Removable chassis cover panels for improved serviceability
  • Accessible lined pump and motor
  • Cyclone array with easy access catch boxes
  • Standard 8x4 Dewatering screen
  • Fully galvanised, reversible walkways
  • 3 Pump options available, dependent on applications

Options:

  • Aggregates
  • Recycling
  • Industrial Sands
  • Mining

Finesmaster Compact Range

The Powerscreen® Finesmaster Compact range are static sand recovery units which are designed to be both cost and energy efficient. The range uses centrifugal force within the cyclone(s) to remove clays, silts and slime from sand to bring it into specification.

The range combines a collection tank, centrifugal slurry pump(s), hydrocyclone(s) and a dewatering screen on a single chassis.

Specifications:

 2060120
Single Grade
120
Double Grade
200X
Weight4,500kgs (9,921lbs)5,500kgs (12,125lbs)11,000kgs (24,250lbs)15,000kgs (33,000lbs)14,000kgs (30,864lbs)
Working width2.2m (7'3")2.7m (8'10")3.15m (10'4")3.68m (12'1")4.24m (13'11")
Working length3.8m (12'6")5.55m (18'2")6.2m (20'4")7.58m (24'10")5.9m (19'4")
Working height5.6m (18'5")5.80m (19')6.11m (20')6.57m (21'7")5.36m (17'6")
Feed height1.27m (4'2")1.77m (5'6")1.90m (6'3)1.95m (6'5")2.1m (6'10")
Product discharge1.35m (4'5")1.30m (4'2")1.61m (5'3")1.91m (6'3")1.4m (4'7")
Waste water discharge height1.27m (4'2")2.40m (7'10")2.03m (6'8")4.11m (13'5")0.95m (3'1")

Features & Benefits:

  • Output potential up to 200 tph (220 US tph)
  • Maximum recovery of all material above 75 μm (200 mesh)
  • Removes silt, slimes and clays below 75 μm (200 mesh)
  • Removes water to 10-15% of residual water content
  • Major reduction in saleable material discharging to the pond
  • Broken down into single container for transport (except for 200X)
  • Quick assembly time
  • Low maintenance
  • Underflow rubber lined slurry pump
  • Self regulating cyclone tank
  • Rubber lined hydrocyclone(s)
  • High frequency dewatering screen’s with polyurethane modular mats
  • Heavy-duty robust construction ideal for rugged operating environments

Options:

  • Bolt on boiler box
  • Electrical control panel
  • Dewatering screen spraybars
  • Galvanised structure & tank

Finesmaster Bucket Wheel Range

The Powerscreen® Finesmaster range of sand classification systems are a highly efficient dewatering unit.

The Finemaster range remove silts, slimes and clays from sand to produce up to 2 saleable products in applications including concrete, mortar and asphalt sands, quarry dust/ crushed fines, lake and beach sands, silica sand, golf course sands, filter bed sands, recycled materials and iron ore.

The range brings together on one chassis a bucket tank, dewatering bucket wheel, a centrifugal slurry pump, hydrocyclone(s), a collection tank and a dewatering screen.

Specifications:

 60 Static120 Static120 Mobile200 Static
Weight8,000kgs (17,600lbs)15,000kgs (33,000lbs)15,000kgs (33,000lbs)17,000kgs (37,400lbs)
Working width4.3m (14'1")3.7m (12'2")2.80m (9')3.8m (12'5")
Working length6.9m (22'6")7.8m (22'6")9.14m (29'11")8.1m (26'7")
Working height5.5m (18')5.5m (18')4.93m (16'2")6.32m (20'9")
Feed height2.30m (7'5")2.3m (7'5")2.30m (7'5")3.1m (10'2")
Product discharge1.26m (4'2")1.26m (4'2")1.26m (4'2")1.69m (5'5")
Waste water discharge height1.50m (5')0.81m (2'9")1.20m (4')1.15m (3'10")

Features & Benefits:

  • Output potential up to 200 tph (220 US tph)
  • Bucket wheel performs 80-90% of the work reducing wear on pumps and cyclones, whilst increasing operating efficiency
  • Maximum recovery of all material above 75 μm (200 mesh)
  • Removes silt, slimes and clays below 75 μm (200 mesh)
  • Removes water to 10-15% of residual water content
  • Major reduction in saleable material discharging to the pond
  • Low maintenance
  • Underflow rubber lined slurry pump
  • Bucket wheel(s) with variable speed control
  • Weir discharge system to stop fines entering the cyclone collection tank
  • Self regulating cyclone tank
  • Rubber lined hydrocyclone(s)
  • High frequency dewatering screen’s with polyurethane modular mats
  • Collapsible bucket wheel tank for ease of transport (mobile only)
  • Walkway and access ladders
  • Heavy-duty robust construction ideal for rugged operating environment’s

Options:

  • Bolt on boiler box
  • Electrical control panel
  • Dewatering screen spraybars
  • Galvanised structure & tank

Trident Range

Powerscreen® Trident dewaterer is a mobile screw recovery twin bucket wheel designed to remove clays, silt and slimes to produce up to 2 grades of sand.

The Trident range is designed to operate with maximum versatility and can support different requirements such as ‘maximum retention of fines’ or ‘maximum disposal of fines’.

Tridents can be driven hydraulically from a Commander 1400, MKII, Chieftain or from its own optional electric power pack.

Specifications:

 12X2
Weight5,000kgs
(11,020lbs)
7,480kgs
(16,800lbs)
8,660kgs
(19,090lbs)
Working width3.67m (12')4.21m (13'10")4.21m (13'10")
Working length4.77m (15'8")6.53m (21'5")7.69m (25'3")
Working height3.52m (11'6")3.66m (12'1")3.67m (12'1")

Features & Benefits:

  • Output potential: up to 150 tph (165 US tph)
  • High capacity depending on material size and type
  • Economical in operation
  • Can produce either 1 or 2 grades of material
  • Excellent fines recovery
  • Specially designed inlet boxes which reduce turbulence at entry
  • Weir discharge system
  • Increased drainage time produces a drier product
  • Can be hydraulically coupled to any Powerscreen mobile rinser unit
  • Single and double grade chutes (plastic lined)
  • Slurry intake boxes (rubber lined)
  • High capacity variable speed twin bucket wheel
  • Deep fluted fines recovery screw with variable speed
  • Adjustable plate between bucket and settling tank for release or retention of fines

Options:

  • Boiler box for dry feed
  • Input boxes with 8″ or 10″ (200mm or 250mm) inlets
  • Static unit without towbar and wheels
  • Electric hydraulic powerpack – 11kW (15HP)

Sand Screws

You can count on GreyStone Fine Material Dewatering Screws to help you turn material washing problems into profitable solutions and meet the specification demands for multiple sand products.

Manufactured for years of dependable, operator-friendly service, GreyStone washers and dewatering screws allow producers to wash a broader range of spec aggregate product sizes.

Only GreyStone Fine Material Dewatering Screws are capable of washing aggregate up to 3/4 inch.

Features & Benefits:

  • The shaft mounted gear reduction is totally enclosed within an oil bath gear box
  • Easy maintenance of motor and drive assembly as standard off-the-shelf items are used
  • The shaft is a heavy stub of mirror-smooth, heat-treated shafting is fitted into a hard stainless steel spacing sleeve
  • Adjustable screw shaft allows you to control the clearance between the belly pan and screw flights
  • Heavy-duty 1-inch-thick rock-grade rubber wear shoes which outwear other material at approximately half the replacement cost
  • Externally mounted pillow block bearings that are standard, off-the-shelf components for easy replacement
  • Strong and rigidly constructed screw washers are designed to provide years of maintenance-free service
  • Efficient overflow distribution assures quiet pool area to prevent fine sand from flushing out with waste water
  • The feed box design reduces turbulence within the pool area and allow a uniform flow of material
  • Dirt and other extraneous matter are carried out with the overflow
  • Easily operated clean-out valve is provided for complete draining of the reservoir on the lower end of the tub
  • Heavy-duty skid frame allows movement through pulling into place instead of using a crane

Sand Classification

GreyStone’s Aggre-Spec III computer-aided sand re-blending system features a patent-pending, 2-method control system that delivers higher productivity than single-method programs.

This exclusive GreyStone program automatically selects the most efficient process for re-blending up to 3 products, including 2 spec products, simultaneously.

The user-friendly Aggre-Spec III allows multi-tasking with other Windows-based programs. Aggre-Spec III is available for all GreyStone classifier models and can be retrofitted to most existing classifying operation systems.

Specifications:

Classifier SizeScrew SizeNo. of Axles/TiresScrew
Capacity TPH
No. of StationsNo. of CellsEstimated Weight
8' x 24'Twin 36" x 25' E2/82007350,000
8' x 28'Twin 36" x 25' E2/82008351,000
8' x 32'Twin 36" x 25' E2/82009352,000
8' x 32'Twin 44" x 32'3/123509373,500
10' x 28'Twin 44" x 32'3/123508381,000
10' x 32'Twin 44" x 32'3/123509386,000

Features & Benefits:

  • Patented, 3-method re-blending system delivers up to 15% higher productivity than single-method programs
  • Simple, “single-step” product spec changes eliminate wasted time searching for hidden keys
  • Automatically monitors feed material to warn the operator of potential product mix or mechanical problems
  • Holds to tight product specifications and reduces the possibility of out-of-spec material
  • Unlimited mix design storage capacity
  • Multi-tasking capabilities with other Windows-based programs while re-blending spec sand products

Classification Tank Models:

  • Stationary Tanks 
    GreyStone stationary Aggre-Spec product line includes 10 classifier models ranging in size from 8 ft x 20 ft to 12 ft x 48 ft. Stationary structures offer from 6 to 11 classifying stations with 3 cells, capable of producing up to 3 products at one time
  • Semi-Portable Classifiers
    GreyStone semi-portable Aggre-Spec classifying systems feature a modular, low-profile construction and stack-up design for quick installation. The line includes 18 classifier models ranging in size from 8 ft x 24 ft to 12 ft x 48 ft. Semi-portable structures offer from 7 to 11 classifying stations and produce up to 820 TPH
  • Portable Classifiers 
    GreyStone fully portable Aggre-Spec classifying systems feature a low-profile design for quick transport and installation. The line includes 8 classifier models ranging in size from 8 ft x 24 ft to 10 ft x 40 ft. Portable structures offer from 7 to 11 classifying stations and produce up to 350 TPH

Speak to an expert

Call us now on +44 (0) 2476 405 100 or request a call back

John Braken
Sales Director – Duo Equipment