Vacuum belt filter for sludge dewatering
Continuous filtration for optimum cake moistures
Horizontal vacuum belt filters offer numerous advantages for process plants:
High filtration rates and large tonnage capabilities
Excllent washing efficiencies and lower cake moisture
Long service intervals and low maintenance costs
Applications of horizontal vacuum belt filter
Typical applications for the horizontal vacuum belt filter include:
Dewatering | Washing |
Coal fines | Gold/silver recovery in cyanide process |
Rutile/zircon and titanium sands | Washing of phosphate rock |
Iron ore fines (both hematite and magnetite) | Nickel/cobalt and manganese salts |
Pyrites | Uranium for SX recovery |
Nickel | Potash/soda ash and lithium salts |
Zinc | Acid-leached copper and cobalt |
Lead | Recovery of alumina from sintered mud |
Copper | Vanadium leached from magnetite |
Phosphate rock | Hemihydrate and di-hydrate calcium sulfate from phosphoric acids |
Washing applications
High extraction efficiencies are the key to profitability in most washing applications, whether it is for gold, uranium, phosphoric acid, copper, or alunima. The horizontal vacuum belt filter can attain wash efficiencies of more than 99.8% as plug flow displacement and multi-stage counter-current washing is utilized over the filration area.
Materials of construction
We offer a complete range of solutions for corrosive, abrasive and hot filtering applications, from the highest quality stainless steel to FPRs and plastics. The filter frames are mnufactured from open channel and angle sections to prevent problems associated with corrosion when using box sections.
Cake discharge
Cake discharge on most applications is spontaneous, we make use of cake scrapers or water slides to ensure complete cake removal in the event of wet, sticky products.
Transporter belt
We have constructed the widest filters using 4m rubber belts. These are available in natural rubber, SBR, neoprene, and EPDM, depending on the process requirements, transporter belts have a carcass-free center zone to ensure long life by preventing contact between the carcass and corrosive filtrates.
Working principle
Horizontal rubber belt vacuum filter with filters as the filter media, is full use of gravity and vacuum suction material to achieve effective separation of the solid-liquid separation equipment. Ring of rubber belt vacuum chamber as a whole. Drag the ring belt from motor runs continuously, filter cloth dressing on the belt and run synchronously, tapes and vacuum skid pad ring contact friction belt and the formation of the water seal. Slurryby the distributor of evenly distributed on the filter cloth. when the vacuum chamber connected to the vacuum system, forming vacuum area on the tape, landfill leachate wearing summary and transverse grooves on the belt filter cloth by a small hole into the vacuum chanber, solid particles are withheld on the filter cake formation. Liquid discharge separator into the vacuum chamber, along with the rubber band to move, cake that has been formed in order to enter the filter cake washed area and dry area, finally separating filter cloth and adhesive tape, filter cake is discharge at the unloading roller. Discharged after washing, the cloth filter regeneration of filter cake, and then through a set of back-up roll and again after correcting device into teh filter area, began to enter new filter cycle.
List of machine parts of horizontal rubber vacuum filter press
Frame work
Rubber belt
Drive roll
underdrive roll
etc... ...
Application and capacity data
filter material | ratio of solid/liquid | moisture content of filter cake (%) | Production Efficiency Kg/(m2·h)(dry) |
Copper concentrates | 4/1~2.5/1 | 11 | 640~960 |
ore tailing | 9/1~4/1 | 20.4 | 4800~8000 |
iron ore concentrates | 2/1~1.5/1 | 7~9 | 3200~4800 |
manganese ore | 2/1 | 13~15 | 1200~1600 |
aluminium hydroxide | 4/1 | 13~16 | 560 |
5 oxidation 2 aluminium | 3/1 | 31 | 278.4 |
smoke coal ash | 10/1 | 18.7 | 7.8 |
flurite powder | 2/1 | 13~15 | 1280 |
gold concentrate | 2/1 | 23~25 | 177.6 |
ammonium paratungstate | 2/1 | 70 | 320 |
calcium sulphate | 5/1~3/1 | 14 | 412.8 |
chlorinated organic dyes | 30/1~20/1 | 68 | 160 |
mixture of caustic soda and copper sulphide | 4/1 | 17.6 | 665.6 |
ABS resin | 10/1 | 34~36 | 272 |
calcium phosphate pulp | 3.5/1 | 20.5 | 552 |
soluble phosphatic fertilizer | 2/1~5/1 | 6~9 | 1600~3200 |
sulfuric acid sludge | 1.5/1 | 35~38 | 1064-1248 |
bauxite | 5/1~4/1 | 25.4~27 | 2720 |
caustic slurry | 4/1 | 45~50 | 425~980 |
vitriolic residual silicon | 1.5/1 | 35 | 320 |
gentamicin fermented liquid | 1/1~2/1 | 32.1 | 124.5 |
fluorine lime | 4/1~5/1 | 40~49 | 320~896 |
ammonium salt | 4/1 | 16~18 | 1600~3000 |
clean coal | 4/1 | 21.4 | 348.8 |
coal ash | 6/1 | 23 | 160 |
zinc sulfate pulp | 5/1 | 42~48 | 499.2 |
phosphogypsum | 4/1~5/1 | 18~21 | 1280 |
potash feldspar | 1~2/1 | 7.9 | 480 |
graphite ore ash | 3/1 | 31 | 278.4 |
zinc waste pulp | 22.8/1 | 86.18~88 | 118.4 |
chromium sulfate | 44.1/1 | 68 | 120 |
Dope | 3% | 80.5 | 150 |
calcium salt | 4/1 | 13 | 251.2 |
uranium smelting | 0.6/1~1.3/1 | 16~20 | 667.2 |
aluminum sulfate slag | 1.5/1 | 25~44 | 154.56 |
lead stearate | 5/1 | 58 | 2400 |
sand material | 4/1 | 18.2 | 1142.4 |
settling arsenic | 10/1 | 38 | 354.2 |
slim sludge | 2/1 | 21 | 132.8 |
activated bleaching earth | 4/1 | 49.2 | / |
zinc oxide suspension | 2.5/1 | 40.3 | 45.12 |
franklinite suspension | 3/1 | 48.2 | 36.48 |
ammonia slurry | 2.82/1 | 60~63 | 1080 |
color acid | 12/1 | 30 | 155.2 |
Vacuum belt filter for sludge dewatering