These are used as alternatives to Gyratory Crushers as primary crushers in Zinc, Lead, Copper and Gold Mining when the throughput needed is less than 500-600 metric TPH. For hard ores Double Toggle Jaw Crushers and for softer ores Single Toggle Jaw Crushers are customary, but based on cost and life expectations (lower costs but with lower wear life in ST variety for hard ores) this distinction is mostly blurred.
These are extensively used to reclaim ROM/ Large Size ores from Dump Hoppers for primary crushing at mine end Ore Handling.
Basically these are rail mounted conveyor discharging equipment to uniformly distribute the conveyed Ore over a large Bin or Ground Storage stockpile.
MSEL has agency agreements with reputed manufacturers to sell this equipment, which are required as Secondary (150/ 75 mm) and Tertiary Crushers (30/10 mm) in Beneficiation circuits.
MSEL product range includes all types of drive and non-drive pulleys, and idlers.
In most of Zn-Pb-Cu-Au mining circuits, final crushed ore from tertiary crushers is ground to (-) 1mm by rod mills. Where High Pressure Grinding Rolls are used secondary and tertiary crushing as well as rod milling is dispensed with. MSEL has a large range of rod mills to suit most ore characteristics and product requirements.
These are used for size reduction to microns and form part of grinding circuit in Ore Beneficiation Plant. In Zn-Pb-Cu-Au mining circuits ball mills grind rod mill products or products from High Pressure Grinding Rolls to (-) 75/40 microns and create slurry of 30-35 % solids concentration.
These are also used as regrind mills in Flotation Circuits.
Circular Motion Screens
Also known as CM Screens, these are used to segregate various size fractions in ore streams. Sometimes used to reduce load on crushers by removing fraction which is already smaller than required size at other times these are used to recirculate oversize fractions from crushed product stream back to crushers. Possible application is in Mines before despatch to beneficiation plants as also in beneficiation plants. These Screens are available in 1, 2 and 3 decks to get 2, 3 and 4 size fractions respectively. Each size fraction may be requiring different post processing.
Rotary Disc Feeders
These are continuous volumetric device reclaiming dry small lumps, coarse, fine grained and powdery material from surge bins and hoppers to feed subsequent equipment. These can be used in chemical conditioning slurry tanks for dosing reagents.
Linear Motion Screens
Linear Motion Screens are used for similar applications but in more demanding situations, e.g.-
- Where the height is limited by surrounding facilities,
- For the screening of small and short fractions
- Where required throughput is high.
High Particle Acceleration Screens
These are ideally suited for heavy and very heavy screening applications for fine grain size materials (1 mm to 10 mm) with screening capacities up to 250 metric TPH. The base frame is agitated by means of eccentric shaft drive. The vibration is passed on to the dynamic frame via thrust rubbers.
Screening mats between the inner and outer frame are clamped and flexed by the two vibrating frames. The relative movement of both screening frames creates a “trampoline effect” in the screen mats to create-
- High acceleration up to 50g in screen mats.
- Loosening-up and de-agglomeration of the product.
These are multi-slope vibrating screens, come in single/ two/ three deck configurations and are used in place of Circular Motion Screens when higher capacities (above 400 tph) are to be processed. The angle of deck decreases from feed end to discharge end.
These are used in primary crusher operation as scalping screen downstream of the Primary Ore Crusher to separate undersized and oversized ore. Typical separation is at 80 mm. These are also used as Feeders to reclaim ore from Hoppers/Bins.
These are built for high capacity reclamation from surge bins, bunker and hoppers. A wide range of sizes is available in MSEL offerings. Heavy Duty versions with larger drives and heavier pans can be selected for coarse ores and normal versions for fine ores
In Beneficiation plants usually the process involves transporting of Ore Slurry (suspension of Crushed/ Ground Ore in Water) between various stages. This is done by use of Slurry Pumps. MSEL has a vast range of Horizontal and Vertical Centrifugal Pumps catering to these requirements.
These are used to concentrate Ore Slurry (30-35% Solids) from various stages of flotation to about 60- 70 % Solids. Overflow product is mostly water and is recycled into circuit whereas the underflow is taken for filtration (in case of Concentrate Thickeners) or to tailings as reject disposal.
U Flotation Cells
These are used for removal of specific impurities ore separation of different metallic particles from multi-metal ore slurries. Tests determine the size and configuration of the Flotation Cell Banks.
We can offer MSEL-Choquenet Filter Press for dewatering of concentrate or tailing in Beneficiation Circuits.