Investigation on foaming properties of some organics for oil bubble bitumen flotation

In this study experiments were carried out for oily bubble flotation of bitumen by using the foam injection technique with different organics (hexane, heptane, hexadekane, petroleum, ether, toluene, benzene und kerosene and their binary mixtures) to select the most suitable organics for bubble coating. Silicon oil was found to be a good foaming agent in some cases. Measurements of surface tension and dynamic viscosity were conducted to examine the mechanism of foaming. Bubble stability and film thickness experiments were carried out to help to evaluate and select the candidate organics. The attachment studies showed that droplets of the selectes organics readily attached to a bitumen surface compared to air bubbles. Above all stable foams can be produced by hexadecane and toluene and their mixtures with hexane and heptane. The ability to reduce surface tension appears to be the governing factor. The alkane mixtures gave higher foamability than toluene-based mixtures from a combination of criteria, 25:75 hexadecane/heptane appears to be a promising candidate.


Related articles:

Issue 2010-10

CDF based modelling of bubble-particle collision efficiency with mobile bubble surface in a turbulent environment

This paper describes how to use a numerical simulation with a Lagrangian particle tracking model to calculate bubble-particle collision efficiency in a turbulent environment. First the bubble-particle...

Issue 2013-06

Flotation 2013

The 6th International Flotation Symposium (­Flotation ’13), organised by MEI in consultation with Prof. Dee ­Bradshaw and Prof. Jean-Paul (J-P) Franzidis, is on track to be the biggest event in the...

Issue 2016-07-08

Flotation ’15 in Cape Town/South Africa

Despite a depressed state of the minerals industry more than 240 delegates from 27 countries and all continents participated at the Flotation 15, 16th–20th November 2015, in Cape Town/South Africa....

Issue 2012-11

FLSmidth’s SuperCell™ 600 series revolutionizes flotation technology

FLSmidth’s 600 Series SuperCell is the newest introduction to the world of flotation technology (Fig.). Designed and engineered at FLSmidth’s technology centre in Salt Lake City, Utah, the...

Issue 2010-07-08

Powerful filter substrates

Large quantities of filter substrate accumulate in retention ground filters (Fig.). Within the scope of the granulate research, development engineers of the FLW AG came across mineral granulates...