A method and apparatus for treating wastes by gasification recovers metals or ash content in the wastes in such a state that they can be recycled, and gases containing carbon monoxide (CO) and hydrogen (H.sub.2) for use as synthesis gas of ammonia (NH.sub.3). The wastes are gasified in a fluidized-bed...http://www.google.com.au/patents/US5900224?utm_source=gb-gplus-sharePatent US5900224 - Method for treating wastes by gasification
