Beneficiation of coal-heavy oil coprocessing residue by oil-phase agglomeration

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...

Coal, Oil Shale, Natural Bitumen, Heavy Oil, and Peat

Oil agglomeration of weakly hydrophobic coals and coal/pyrite mixtures

Fine particle suspensions of various materials in water were agglomerated with heptane in a modified blender to determine the agglomeration characteristics of the solids. The materials included Upper Freeport coal, oxidized Upper Freeport coal, two batches of Illinois No. 6 coal, graphite, and iron pyrite. The response of these materials to oil agglomeration varied over a wide range and seemed ...

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...

Application of Stable Carbon Isotope Analysis to Continuous Coal/oil Coprocessing

'Solids formed from coprocessing of 10% coal/90% resid were characterized by solvent extraction, elemental analyses, C'3/C'z isotope ratio, ESR, and GPC techniques. adsorbed petroleum-derived material (oil, resin, asphaltene). The THF insolubles in the product contained high oxygen, low vanadium and a higher level of polyaromatic radicals than the soluble fraction, indicating that these insolub...