While design and accuracy of engineering are critical components to maximize water recovery, guidance in the appropriate selection of screen sizing is just as important. The MIN-TEC Dewatering& Washing Screen range delivers improved load capacity and water recovery when applied in the appropriate environment.
Factors that need to be considered include:
• Type of material to be screened
• Specific gravity of material
• Dry feed rate or slurry mtph or m³/hr
• % solids by w/w in feed slurry
• Bulk density of the material to be screened (t/m³)
• Particle size distribution
While primarily applied for dewatering with retained fines, the MIN-TEC Dewatering& Washing Screen range is capable of being used in a wide range of other applications, some examples of which are outlined below.
• Removal of tramp material such as wood chips from gold ore pulp (CIP)
• Removal of oversize from pulp of beach sand cutting at 1mm (.039)
• Dewatering activated carbon in CIP circuits
• Replacement of rake classifiers, rotor scoops and sand screws
• Tailings dewatering
• Sand dewatering
• Removal of fines from activated carbon (CIP)
• Removal of fines in 65 μm fine coal
Curved, sieve like feed section and the upward inclination of the main deck provides for increased dewatering capacity.
Uses centrifugal force to assist with dewatering and adds a larger total screening area without increasing the size of the machine. This facilitates the potential use of smaller units, thereby reducing the overall investment cost in machines and structure.
Offers higher production rates than conventional dewatering screens and lower overall moisture content allowing easier transport of dewatered material.
MIN-TEC Dewatering& Washing Screen are fitted with highly abrasion resistant polyurethane modular screen panels, originating from years of product design expertise at our local partners .These polyurethane panels can be made with a range of aperture sizes to suit each application. A vast majority of applications have proven to exceed 1 million tons without the need for replacement parts. MIN-TEC Screen Media is extremely easy to maintain, with the entire screen surface of aMIN-TEC Dewatering or Washing Screen able to be changed by one person in less than one hour. Our Screen Media is coupled with polyurethane U channel stringers. These polyurethane stringers have proven to eliminate fine wet abrasion problems that are frequently associated with conventional steel stringers. They provide long life and are easy to maintain.
Maintenance on the MIN-TEC Dewatering & Washing Screen range is designed to be extremely easy, saving downtime and reducing production loss thereby reducing total operating costs. Key maintenance features include:
Quick alteration of the screen deck inclination angle allowing fine tuning of the product flow to maximize output and efficiency.
In dewatering Screens easily adjustable discharge over size products height to better control the discharge moisture content.
The amplitude of the machine can be readily modified to optimize performance.
The fabricated main exciter bridge, the vital component in the transmission of the vibration from vibrating motor to screen, is stress relieved. (With vibration stress release method). The surfaces interfacing with the screen side plates and the motors are machined to exacting tolerances to provide a precise fit for long trouble free life.
The side plates of the machine are fitted with easily replaceable (bolt in) Natural Rubber wear liners, affording protection to the structure of the machine, delivering long service life.
The MIN-TEC Dewatering & Washing Screen frame is predominately of bolted construction. This is to avoid the stresses that can be created by welding.
Both the linear motion low noise vibrating motors and the used unbalanced drives or exciters have been designed specifically to ensure long life with minimum maintenance requirements.
Epoxy adhesive is used between all interfacing surfaces of the screen frame eliminating corrosion and uniformly distributing stresses in these areas.
Molded rubber buffers are used on all four support points to isolate live frame vibrating loads. These provide longer life and less maintenance than coil springs in wet applications. If the spring isolators are necessary, hot galvanized cover will use to cover coil springs to protect in wet applications.
No external drives, with v-belts or cordon shaft
No oil bath oscillators, with synchronizing gears and oil leaks
No Motor support stand, or overhead structure for motor support
Due to the absence of gears and vee-belts, the units use less power than conventional drives.
Minimized maintenance time due to simple arrangement of drive
Compactness-screens can be positioned very closely with a minimum of space wastage.
MINTEC dewatering screens have been designed and manufactured based on 4G Dewatering screens by LINATEX, as a matter of fact MINTEC have reengineered and manufactured those types of screens based on following table:
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