Delkor Horizontal Belt Filters are efficient and reliable liquid/solids separation units suitable for dewatering a wide range of materials such as mineral sands, iron ore and lead zinc concentrates. Over the past few years, Delkor horizontal belt filters have also become an increasingly popular method of dewatering fine coal flotation concentrate in coal preparation. Delkor has now manufactured more than 850 filters worldwide, including over 50 filters for coal dewatering applications and over 100 Flue gas desulphurisation filters.
Incorporating proven technology with installations all over the world, Delkor horizontal belt filters outperform other types of filters such as rotary drum, disc, tilting pan and table filters. Major features of Delkor's technology include continuous cleansing of the filter cloth, counter-current washing to minimise the amount of water needed, and the production of a drier cake than that which is possible with other vacuum filters.
Making use of the most modern materials of construction makes the Delkor Horizontal Belt Filter an efficient and reliable Liquid/Solids separation unit. Utilising vacuum filtration it has low capital, running and maintenance costs. It outperforms traditional rotary drum, disc, tilting pan and table filters in all situations where capacity, efficient washing and minimum liquor dilution are required. It has also been adapted to flotation concentrates and sand drying applications where considerable reductions in cake moisture are achieved. This new concept makes use of unique process features which results in large capital and operating cost savings. 
Applications :
Drying of flotation concentrates or tailings including:
- Coal
- Copper
- Lead
- Nickel
- Zinc
- Pyrite
- Phosphate rock
- Magnetite
Drying of heavy and coarse materials
- Rutile
- Zircon
- Chromite
- Dewatering paper machine effluents
- Iron ore
- Silica sand
- Power station ashes
- Tin
- Smuts from bagasse boilers
- Sand
Delkor HBF Advantages:
High filtration rates: Typically the Delkor Filter will require only one third to one half of the area required by a rotary rum or disc filter. This is due to the top feed application of slurry which allows coarser particles to form pre-coat on the filter medium.
Flexibility of operation : In the Delkor filter system, the cake thickness, wash rate, vacuum and cycle time can be varied to achieve optimum filtration conditions. This results in lower investment costs.
Low operating and maintenance costs : The Delkor filters use specially designed vacuum seals to reduce friction. This coupled with an open and accessible design results in long life wearing parts and low running costs.
Continuous cleansing of the filter cloth : Both sides of the filter cloth are cleaned by wash sprays to ensure long life, and to prevent blinding throughout the cloth Life cycle. New cloth cleansing methods using positive back-flush can eliminate the use of sprags and reduce water consumption where required.
Better washing efficiency : The displacement of mother liquor in the cake by plug flow washing gives maximum efficiency with a minimum amount of wash liquor. This ensures a high purity cake and minimises effluent problems.
Counter-current washing : Counter-current washing in several stages can be used to minimise the amount of wash liquor and reduce mother liquor dilution while maintaining excellent recoveries.
Drier filter cake : Due to better packing of the particles in the filter cake. gravity discharge and variable drying zone size, the Delkor filter gives drier filter cakes than other vacuum filters.
Delkor experience : Today, Delkor is the largest Belt Filter manufacturer worldwide, and the experience gained is reflected in the designs and competitively priced units.
For further information please contact your regional Delkor office or download our latest Delkor HBF brochure
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