Four BoVac Drum drum filters are operated for filtration, washing and dewatering of fine sized tarnishing pigments. Each of these modern 5 m² vacuum drum filters replaces one 8 m² drum filter of old design. The filters are equipped with adjustable wash bars with spray nozzles and with a wash hood. Cake wash achieves a reduction of conductivity in the filter cake from 42.000 µS down to 180 µS after cake wash.

Exchangeable filter cells allow easy cleaning and incomparable quick re-clothing. With a second set of filter cells already equipped with filter bags the time for re-clothing is only approx. 1–2 hours, including shutdown, cleaning and restart of the filter.

BoVac Drum Filter S5

Units installed

­

4

Filter area per unit

[ m² ]

5

Material of construction

 

1.4571

Power of filter drive

[ kW ]

0.12

Year of commissioning

 

2008

 

Process and Operation Data

Solids throughput

[kg DS/h ]

680

Cake moisture

[ wt.- % ]

83

Wash result

 

reduction of conductivity from 42.000 µS down to180 µS

Time for change of filter cloth

[h]

1–2

 

Product Data

Product

 

Tarnishing pigments

Medium particle size

[ µm ]

7

Temperature

[°C ]

40–50

 

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