Dorr Oliver Cells

The Door-Oliver cell is marketed by Dorr-Oliver, a global corporation and member of the Krauss-Maffei Group.

The Dorr-Oliver Company Limited manufacturers flotation cells in a wide range of sizes. Cells with a volume of 0.03 m3 (DO 1) to 2.8 m3 (DO-100) have a flat-bottom tank design. Cells with volumes from 4.2 to 44 m3 come with a U-shaped tank bottom. Cells with volumes from 50 to 150 m3 are available with a round tank with a conical bottom. Details of tank dimensions for the Dorr-Oliver cells are given in Table 2.

Table 2 Dorr-Oliver cell tank dimensions for different cell sizes (taken from Dorr-Oliver flotation cell brochure; courtesy of Dorr-Oliver, Australia)

DO conventional cells

Model Volume (m3) Length(m) Width(m) Height(m) Installedmotor(kW)

DO 1.0

0.03

0.3

0.3

0.33

0.55

DO 3.5

0.1

0.45

0.45

0.5

0.55

DO 10

0.3

0.65

0.65

0.66

1.1

DO 25

0.7

0.9

0.9

0.86

2.2

DO 50

1.4

1.2

1.2

0.97

4.0

DO 100

2.8

1.52

1.52

1.22

5.5

DO 150

4.2

1.83

1.83

1.53

7.5

DO 300C

8.5

2.29

2.29

1.88

7.5

DO 300

8.5

2.29

2.29

1.88

11.0

DO 500C

14

2.69

2.69

2.46

15

DO 600

17

2.95

2.69

2.46

22

DO 1000

28

3.35

3.35

2.89

30

DO 1350

38

3.81

3.58

3.22

37

DO 1550

44

3.96

3.96

3.22

Tank design

Model Volume (m3) Height(m) Diameter(m) Installedmotor(kW)

DO 3500 100 5.49 4.65 93

DO 5300 150 6.71 4.72 131

The Door-Oliver mechanism consists of a hemispherical-shaped impeller fitted to a hollow shaft. The mechanism utilizes the forced air entry mode in which air is introduced to the impeller through the hollow

Figure 9 Schematic diagram of a large Dorr-Oliver cell (courtesy of Dorr-Oliver, Sydney, Australia).

shaft. The stators for the Dorr-Oliver cells are generally mounted on the bottom but the large cells mechanisms are designed with an overhung stator.

Figure 9 shows a schematic diagram of a large Dorr-Oliver cell with a tank design.

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