Spherical Oil Agglomeration (SOA)/ Colloidal Gas Aphrons (CGA) Flotation

Spherical agglomeration pdf

Development of a Gas-promoted Oil Agglomeration Process

Further agglomeration tests were conducted in a series of tests designed todetermine the effects of various parameters on the size and structure of the agglomeratesformed, the rate of agglomeration, coal recovery, and ash rejection. For this series oftests, finely ground Pittsburgh No. 8 coal has been agglomerated with i-octane in a closedmixing system with a controlled amou...

Effect of Surfactant on Spherical Oil Agglomeration of Coal (RESEARCH NOTE)

In this paper, the results of the Spherical Oil Agglomeration of Abstract .45 micrometer superpits low grade co al pa rticles (Bagworth Colliery, U.K.) within a su spension are prese nte d.Demineralized agglomerates were recovered directly by sieving on a 106 micrometer sieve. Verygood reductions in the ash content of the feed coal samples were achieved. In order to reducethe high levels of the...

Methods of Improving Oil Agglomeration

A simple thermodynamic analysis suggests that oil can spontaneously displace water from coal’s surface if the coal particle has a water contact angle greater than 90°. However, the clean coal products obtained from laboratory-scale dewatering-by-displacement (DbD) test work assayed moistures substantially higher than expected. These high moisture contents were attributed to the formation of wat...

Free gold recovery by coal-oil agglomeration

Environmental protection has become the focus of world-wide research in the gold mining industry and favours the development of environmentaly sound processes, such as the Coal Gold Agglomeration (CGA) process, which is an alternative to existing gold processing methods, such as cyanidation and mercury amalgamation. The CGA process was developed and patented by the British Petroleum (BP) resear...

Shear stresses of colloidal dispersions at the glass transition in equilibrium and in flow.

We consider a model dense colloidal dispersion at the glass transition, and investigate the connection between equilibrium stress fluctuations, seen in linear shear moduli, and the shear stresses under strong flow conditions far from equilibrium, viz., flow curves for finite shear rates. To this purpose, thermosensitive core-shell particles consisting of a polystyrene core and a cross-linked po...