Abstract: An installation including on the one hand trolleys equipped each with a hydraulic jack and roller members and on the other hand parallel supporting-beams which support the boat which is arranged so that its longitudinal axis is perpendicular to these beams which bear upon the jacks of two trolleys running on two parallel tracks, the jacks forming three groups of jacks connected hydraulically so that the resultants of these groups are located at the corners of a triangle, and it is characterized by the fact that it includes at least three parallel tracks upon which the trolleys run which support the supporting-beams which are arranged so as to form at least two lines of beams which are displaced perpendicularly to the longitudinal axis of the boat.

Abstract: A mineral agglomeration process in which a layer of mineral on an endless conveyor is passed through a firing zone provided with suction windboxes below the conveyor and connected to a common firing suction duct, and then through a cooling zone in which the product is cooled by air drawn through the layer by suction windboxes connected to a common cooling suction duct. The process is regulated by measuring the temperature of the gases in the common suction duct of the cooling zone and using a signal resulting from a comparison of the measured temperature and a preset temperature to control the flow of gases from the windboxes in the firing zone.