<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="6.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Jack, Thomas R.</style></author><author><style face="normal" font="default" size="100%">Sullivan, Ernest A.</style></author><author><style face="normal" font="default" size="100%">Zajic, James E.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Leaching of vanadium and other metals from Athabasca oil sands coke and coke ash</style></title></titles><keywords><keyword><style  face="normal" font="default" size="100%">chemistry</style></keyword><keyword><style  face="normal" font="default" size="100%">coke</style></keyword><keyword><style  face="normal" font="default" size="100%">metals</style></keyword></keywords><dates><year><style  face="normal" font="default" size="100%">1979</style></year><pub-dates><date><style  face="normal" font="default" size="100%">08/1979</style></date></pub-dates></dates><publisher><style face="normal" font="default" size="100%">Fuel </style></publisher><volume><style face="normal" font="default" size="100%">58</style></volume><pages><style face="normal" font="default" size="100%">5 pages </style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">Flexicoker coke derived from Athabasca Oil Sands bitumen contains a number of heavy metals, including vanadium, nickel, iron and titanium, which are susceptible to extraction by hydrometallurgical procedures. The leaching behaviour has been studied as a function of pH, temperature and the presence of salts and redox agents. Greater than 50% extraction of the vanadium, iron and nickel can be achieved by acid leaches, but only about 20% of the titanium can be extracted. Weakly acidic leaches extract about 30% of the nickel content but no significant amounts of the other metals. If cokes derived from Athabasca Oil Sands bitumen by the flexicoking process or the conventional delayed-coker coking process are combusted at temperatures below 500 °C, the vanadium and nickel values in the residual ash are readily susceptible to acid leaching.</style></abstract><issue><style face="normal" font="default" size="100%">8</style></issue><custom2><style face="normal" font="default" size="100%">Athabasca Oil Sands Region (AOSR)</style></custom2><custom3><style face="normal" font="default" size="100%">http://www.worldcat.org/oclc/4644066560</style></custom3><custom4><style face="normal" font="default" size="100%">OSEMB</style></custom4></record></records></xml>