Tag Archives: clarifiers

Metso Outotec delivers new generation feedwell for improved thickener, clarifier performance

Metso Outotec says it is launching the Metso Outotec Reactorwell™, a new generation feedwell for maximising thickener and clarifier performance while minimising flocculant consumption and bringing significant operational cost efficiencies.

The feed system features high solids retention and mixing efficiency. It also eliminates feed short-circuiting and offers low shear for ideal floccule growth and even discharge symmetry, the company said.

The new feed system provides optimum feed conditioning for thickeners and clarifiers, and, thanks to its many benefits in addition to low flocculant usage, the Reactorwell is part of Metso Outotec’s sustainable Planet Positive portfolio.

Brian Berger, Vice President, Thickeners and Clarifiers at Metso Outotec, said: “The Reactorwell enables a big leap forward in thickener and clarifier performance as it utilises maximum settling area due to its high exit symmetry. It also provides improved overflow clarity as well as higher underflow density. Additionally, the Reactorwell allows better thickener operability with an improved response to process changes.

The Reactorwell is, the company says, easy to maintain due to its intelligent design and modularity. It consistently achieves high unit area throughput and the improved Autodil™ performance minimises the need for pumped dilution, leading to lower total cost of ownership.

Tenova DELKOR shows off sedimentation specialism at Morocco silver project

Tenova DELKOR says it has successfully supplied and carried out mechanical completion of seven DELKOR thickeners, together with its flocculation system and a DELKOR Pinned Bed Clarifier (PBC) for a silver leaching plant project in Morocco.

The thickeners are to be employed in the counter current decantation circuit of the plant, with the project including the design, fabrication and supply of thickeners, flocculation plant and PBC, supervision of installation and performance guarantee.

The PBC is a unique process for hydrometallurgical plants where solution clarity is important, according to the company. “A technology for polishing feed solutions for solvent-extraction plants, the unit offers low suspended solids counts in overflows, regularly achieving clarities of less than 50 ppm solids, and as low as 20 ppm.”

Benefits of the PBC technology, according to Tenova DELKOR, include low capital expenditure for comparative clarifying technology; no moving parts, virtually eliminating the need for maintenance; robust and stable performance; it is optimised to minimise flocculant consumption, and; a small footprint.

Ramesh Mahadevan, DELKOR India Managing Director, said: “As the industry specialist in sedimentation, DELKOR offers a range of thickeners and clarifiers catering to various applications across the minerals, chemical, industrial and water management industries with designs of up to 100 m in diameter.

“Successful hand over of this important project only serves to strengthen our capabilities in the North African region and is a true testament that.”

GN kicks off 2019 with separation and conveying equipment spinoff

GN has decided to spinoff its separation and conveying divisions into a new group, GN Separation and Conveying Equipment.

The new business, set up at the beginning of 2019, will mainly focus on industries outside of the oil & gas, and recycling and waste management sectors.

GN Separation and Conveying’s product line includes decanter centrifuges; transfer pumps; screw, bucket and belt conveyors; and other separation equipment such as clarifiers and a screen scroll centrifuge.

Mining and construction is one of the company’s target markets. Decanter centrifuges (pictured), with up to 30 in (76.2 cm) bowl diameters, are already working in coal operations to dewater slurry, while GN U-Type screw conveyors have potential applications in mining operations for moving wet or dry materials either horizontally, on an incline or vertically.