Ceramic disc filters (CDF)

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Destination

Usage of Bakor vacuum disk filters CDF with ceramic filtering elements is the most optimal solution for drying of suspensions with high solids content (from 15 to 70). The Vacuum Disk Filter CDF is equipped with disks and each disk is fitted with 12 ceramic filtering plates of the sector shape (filtering elements). Drying of concentrates (sludge) by means of ceramic filtering elements is performed due to the action of capillary forces.

Industries:
  • Mining and processing industry
  • Metallurgy
  • Chemical and petrochemical industry
Advantages
HIGH SPECIFIC CAPACITY
  • 1.5-5 time higher than capacity than of similar vacuum and press filters
  • Large filtering surface per unit of occupied area

LOW MOISTURE CONTENT OF CAKE

  • Average moisture content of concentrates is 7-8 %

SAVING OF ENERGY RESOURCES

  • Energy consumption is 10-20 times lower as compared to vacuum fabric and press filters
  • Possibility to exclude the concentrate drying operation
  • Minimization of investments into consumables, auxiliary equipment
  • No cake blowing

REDUCTION OF OPERATING EXPENSES

  • Reduction of expenses on replacement of filtering elements
  • No abrasive wear of parts in the filtrate removal system
  • Minimum demands for maintenance and repair
  • High corrosion resistance of the filter design

CONTINUOUS ACTION

  • Reduction of expenses on conveyer equipment
  • High operating availability of the filter — 98%
  • High capacity of the filtering area

PURITY OF FILTRATE AND FEEDSTOCK SAVING

  • Filtration without losses of fine concentrates with contents – 0.040 mm up to 99%.
  • High purity of filtrate – solids contents in filtrate 0.001-0.005 g/l
  • Usage of filtrate in the closed water circulation system and reduction of water consumption by 30-50%
  • Reduction of polymer flocculants consumption in thickeners

ENVIRONMENTAL ADVANTAGES

  • Aerosol emissions were eliminated in the working area of filtrate due to absence of the cake blowing operation
  • Clean filtrate which does not pollute production and environment.

OPERATING ADVANTAGES

  • Significant reduction of operating expenses
  • Easy-to-assemble and –service design
  • Continuous and automatic operation.

Patented design of the unit shaft (drum) assures maximum stability of operation:

  • 100% blocking of the cake formation area and the drying area from penetration of backwash water or filtrate
  • Vacuum adjustment in the cake formation and drying area
  • Adjustment of backwash pressure
  • Design of the bath and the stirrer assures uniform mixing of high-density concentrates.
General structure

cdf03.jpg

Specifications

Design of the KDF filter is equipped with the system for ultrasound and liquid (acid) treatment of ceramic filtering elements which assures the most effective regeneration of plates. Ultrasound treatment may be applied both on the regular and periodic basis depending on application conditions and may be performed both separately and in combination with acid treatment.

Parameters

CDF 0.5 CDF 1 CDF 3 CDF 15 CDF 30 CDF 45 CDF 45-1 CDF 60 CDF 150
 Filtering surface m2 0.5 1 3 15 30 45 45 60 150
 Number of sectors in the disk pcs 10 10 12 12 12 12 12 12 12
 Disk diameter mm 720 720 1900 ~2260 ~2260 ~1900 ~2260 ~2260 ~2260
 Dimensions mm                  
 length   975 1275 1800 ~3600 ~4350 7222 ~6350 ~6950 ~7950
 width   995 995 2500 ~3910 ~3910 3546 ~3910 ~3910 ~5100
 height   1280 280 2800 ~3300 ~3300 2685 ~3300 ~3300 ~3300
 Vacuum pump power   0.75 15 1.5 22 2.2 2.2 2.2 6 15
 Installed power kW 1.75 2.7 16 18 20 152 26.8 34.5 70
 Filter weight kg   200 1800 8100 11500 15360 15050 15950 44200
 Servicing area m2 6 8 17 35 45 51.1 495 53 50.7
 Pulp volume in the bath m2 01 0.4 1.3 3.8 53 7.4 8 9.5 31

Equipment options
  • Acid station
  • Filtrate station
  • Acid regeneration effluent neutralization station

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