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DELKOR  LTD.

delkor logo

Delkor are the world leaders in Horizontal Vacuum Belt filtration having considerable experience of solving solid/liquid seperation problems in the Chemical, Metallurgical, Fertiliser and Environmental Industries.

 

DELKOR HORIZONTAL BELT VACUUM FILTERS

Delkor offer a range of filters from  1 m2 pilot filter up to 250 m2 of effective filtration area with a single rubber belt. All these units are capable of running at speeds of up to 60 metres per minute at vacuum of 80 torr (27 inches mercury).

The Delkor Horizontal Vacuum Belt Filter provides reliable continuous filtration incorporating multi-stage counter current cake washing to suit a wide variety of process applications.  

horizontal vacuum belt filter

Washing Applications    

Highest extraction efficiency with minimum use of washing liquor is the key to profitability in all filtration washing applications, whether phosphoric acid, soda ash, alumina, gold, uranium or copper.

Washing can be single stage, multi stage co-current or multi-stage counter-current depending on how much wash water is available. Delkor has a number of techniques which give ease of operation and a high wash efficiency.

Co-current washing Counter current washing
Co-current Washing Counter current washing

Co-current Washing

Co-current washing in several stages gives excellent washing efficiency when filtrate dilution is not critical. Typical applications:

  • Gold Silver recovery in cyanide processes

  • Recovery of metals in solution following by precipitation.

  • Washing of phosphate rock.

  • Recovery of manganese.

  • Cement copper washing.  

  •  Washing in CCD circuits as first or final stage.

  • Catalyst Washing.

  • Glass Sand Washing.

  • Uranium Yellow Cake Washing.

  • Pigments.  

Counter-current Washing

This method is used when down-stream treatment of filtrates requires minimum dilution such as when filtrates have to be concentrated by evaporation or when limited wash water is available. Typical applications:

  • Hemi-and-Dihydrate calcium sulphate from phosphoric acid or Flue Gas cleaning

  • Recovery of alumina from sintered mud.

  • Uranium recovery after acid or carbonate leaching

  • Lime mud washing

  • Cellulose pulp washing

  • Soda ash washing

  • Vanadium and Tungsten recovery

  • Zinc jarosite washing

Drying Applications

Delkor Belt Filters are very economical for dewatering and drying large tonnages of solids compared with other vacuum filters and give lower residual cake moistures with lower capital and operating costs. Typical Applications:

a)      Drying of floation concentrates and tailings:

  • Coal

  • Copper

  • Zinc  

  • Pyrite

  • Lead

  • Phosphate rock  

  • Nickel

  • Activated Carbon  

b)      Drying of heavy and coarse materials including:

  • Ilmenite

  • Iron ore

  • Rutile

  • Silica Sand

  • Zircon

  • Power Station Ashes

  • Chromite

  • Tin

  • Dewatering of paper machine effluents

  • Smuts from bagasse boilers

  • Mineral Sands

c)      Dewatering of Mineral slurries, sludges and effluents.

 

 

HI-RATE CLARIFIER/THICKENER

Delkor Hi-Rate Thickener/Clarifiers offer significant advantages over conventional thickeners by using fluidised sludge bed principle for solids separation. Delkor Hi-Rate Thickeners inject the feed near the bottom of the unit. The feed solids form a fluid bed above the feed injection point and the slurry is then filtered as it flows upwards through the fluid bed. The bed is fluidized by the upflowing liquid and the free settling zone of a conventional thickener is eliminated.

The Delkor Hi-Rate Thickener has a low residence time which makes process control much easier than with conventional thickeners. The efficient use of flocculant costs and the large bed compression, section beneath the feed injection point, provides high underflow densities.

The Delkor Hi-Rate design gives exceptionally high clarities when designed to operate as a clarifier.  

hi-rate clarifier/thickener

Benefits

  • Low capital cost

  • Low flocculant consumption/Low operating cost

  • Less than half the size of conventional sedimenting clarifier/thickeners

  • Exceptionally clear overflow

  • Can operate as a clarifier and a thickener-in one unit

  • Low solids retention time

  • Continuous lab testing equipment gives accurate sizing

 

Application Fields  

MINERAL & MINING INDUSTRIES FERTILIZER INDUSTRY EFFLUENT TREATMENT

  • Coal Flotation Tailings

  • Uranium Leach Pulp

  • Copper Tailings

  • China Clay

  • Zinc Tailings

  • Magnesium Hydroxide

  • Dense Media Plant Water

  • Recovery

  • Leached Gypsum Effluent

  • Sulphide Flotation Tailings

  • Gold Calcine Circuit

  • Phosphate Slime Tailings

  • Phosphoric Acid

  • Sulphiric Acid

  • Hydrofluoric Acid

  • Scrubbed Fly Ash

  • Municipal Sewage

  • Flue Gas Desulphurizication

  •  Plant Waste Water

  • River Water Treatment

  • Sand and gravel

  • Paper Effluent Clarification


  DELKOR BOND FILTER

The Delkor Bond Filter is an indexing type horizontal vacuum filter. The filter has been developed to satisfy the filtration needs of the chemical industry and is cost effective for the size range 0.5 to 40 m2 in effective area.

The filter is constructed from materials compatible with the most aggressive chemical environments and is available both for dewatering applications and dewatering with cake washing. Hooded and totally enclosed designs are available for hazardous environments.

The Delkor Bond Filter is microprocessor controlled to provide an extremely flexible filter which can be fine-tuned to get optimum results from the most difficult filtration problem. The ability to link the control system offers further automation benefits.

 

Features 

  • Automatic

  • PLC able to talk to other PLC systems

  • Control panel or programming software supplied

  • Filter cake washing (co-current/counter-current)

  • Filter cloth washing (Dual sided)

  • Effective support tray design, no distortion even at 100°C

  • Patented soft start cloth advance with adjustable advance increment

  • No cloth ‘snatch’

  • Simple, proven cloth guidance system

  • Fully assembled and tested before delivery

  • Professionally engineered with superb build quality

 

Your Benefits 

  • No full time operator required

  • Main plant control system can control the filter

  • Controls designed to suit you

  • Better recoveries

  • Minimal cloth blinding

  • Consistent high vacuum operation means higher capacities with low energy costs

  • Extended filter cloth life

  • Cake cracking minimised

  • Even higher capacities

  • Even better recoveries

  • Easy to optimise

  • Lower installation costs

  • Simpler start up

  • Low maintenance cost

  • After solving the process problem it will continue to impress for years


DELKOR LINEAR SCREEN

The Delkor Linear Screen is a revolutionary screening system which has solved a major problem in the CIP process on gold plants. It was developed to remove wood fibre and tramp oversize from milled gold slurries and is capable of screening between 150 and 2 000 microns.

Applications

The Delkor Linear Screen removes wood fibre, carbon, vegetation, carbonaceous ash or any other tramp material from fine mineral or chemical slurries prior to Gold plant leach, CIP adsorption, Gravity concentration, Flotation, on stream analysis and Dump retreatment processes.

It is also suitable for:

  • Removal of asbestos from liquid streams

  • Removal of coarse boiler ash from repulped flyash dumps

  • Washing contaminated fine pulps in the paper industry

  • Scavenging loaded carbon from gold plant tailings

  • Fine screening of milling plant cyclone overflow

  • Fine screening of feed to gravity concentration plants.

 

 delkor linear screen

Benefits

  • Wide range of cloth apertures-from 150 and 2 000 microns.

  • Quick cloth changing time 20-30 minutes.

  • Cloth made of wear resistant polyster.

  • No vibration.

  • Low maintenance costs.

  • Low power consumption.

  • Simple operation.

  • No scaling of cloth from chemical precipitation.

 


DELKOR/KEMIX AGITATORS  

The standard models of Delkor/Kemix Mixers for the chemical and metallurgical industries extend from 0.37 kW portable agitators to 250 kW heavy duty units for applications such as sulphiric acid.

Agitator Types 

  • Portable and light duty agitators

  • Medium duty agitators

  • Heavy duty agitators

  • Hydrofoil Turbines

  • Draft Tube Circulators

  • Attrition Scrubbers

  • Conditioners

 

 delkor/kemix agitator

 

DELKOR/KEMIX PUMP CELL  

The AAC pump-cell is a novel contactor for carbon-in-pulp (CIP) or resin-in-pulp (RIP) applications, which combines the functions of pumping, screening and agitation in a single drive unit operating within a modular high capacity cell.

Delkor also offers Kemix Carbon Kilns and Electrolytic Cells for recovery of Gold and Silver.  

delkor/kemix pump cell
Selector guides and data sheets for all the above mentioned products are available on request. 
 
ASES AVIATON SERVICES & SUPPORT INC.