Processing of tailings in Canadian oil sands industry

被引：0

作者：

JMasliyah Department of Chemical and Materials Engineering University of Alberta Edmonton Alberta Canada TG G ^{[6
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机构：

来源：

TransactionsofNonferrousMetalsSocietyofChina | 2002年 / 03期

关键词：

oil sands; tailing; bitumen extraction;

D O I：

暂无

中图分类号：

X74 [石油、天然气工业废物处理与综合利用];

学科分类号：

083002 ;

摘要：

Vast amounts of tailings are produced daily in bitumen extraction from the Athabasca oil sands. The coarse sand from the tailings stream is used to build dykes around the containment basin. The run off slurry arrives at the water's edge in the tailings pond at a solids concentration of about 3%～8% by mass. Settling of the solids takes place "relatively fast", over several days, creating a "free water zone" that contains little solids. When the fine mineral solids concentration has reached about 15% by mass, the suspension develops non Newtonian properties. After 2～3 years, the suspension concentration reaches a value of about 30% by mass at which the settling rate becomes extremely slow. Methods to handle the already created tailings ponds and new approaches to eliminate the creation of new ones will be discussed both from the industrial and fundamental prospective.

引用

页码：524 / 528

页数：5