The name is absent



Chapter 3

bitumen (dilution ratio 2.4) in a flat-bottom glass tube (outer diameter 48 mm,
inner diameter 44 mm and length 230 mm) with a six-blade turbine [1] (Figure 3.8)
at ambient temperature. Stirring speed of the turbine is 3600 rpm and the mixing

time is 10 min.

6 mm

200 mm

D = 30 mm


w =(1∕5)D = 6 mm
t =(1∕4)D = 7.5 mm
d = (3∕4)D = 22.5 mm


AirZwater
interface

48 mm


Figure 3.8 Sketch of the mixer and emulsion preparation

Different emulsion samples (samples 1 to 4) were prepared as comparison to
study the effects of demulsifier, clay solids and wettability agent, as described in
Table 3.3. Here 200 ppm optimal demulsifier PR5 was used.

Table 3.3 Different emulsion samples for the measurement

Case

Emulsion with solids

Emulsion without solids

Without demulsifier

Samplel

Sample 3

With demulsifier

Sample 2

Sample 4

Study of the difference between samples 1 and 2, samples 3 and 4 can show

59



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