Outotec (finland) Oy

Outotec Oyj

Metso Outotec Finland Oy

Jaana Romppanen

Peter Björklund

Aki Laaninen

Kaj Eklund

Valtteri Sonninen

Jani Jansson

Tuula Mäkinen

Jaakko Poijärvi

Raimo Nupponen

A method and an arrangement for controlling a burner of a suspension smelting furnace. The burner includes a reaction gas feeding device, and a fine solids feeding device. The fine solids feeding device being at an upstream end of the fine solids feeding device pivotably supported in the reaction gas feeding device. The burner including by at least one first mechanical actuator configured to center the fine solids feeding device in the annular reaction gas outlet opening. Said at least one first mechanical actuator being in response to receiving the control signal configured to perform a centering action to center the fine solids channel in the annular reaction gas outlet opening.

Method and arrangement for controlling a burner of a suspension smelting furnace

A feed mixture distribution device configured to even out a feed of feed mixture in an annular feed mixture feed channel of a burner. The feed mixture distribution device includes a cylindrical member having a cylindrical wall, a first end, a second end, and a longitudinal central axis X. The cylindrical member is at the first end provided with rectangular flat plate means, which extend radially from the cylindrical wall of the cylindrical member and which are arranged symmetrically about the longitudinal central axis X of the cylindrical member. The cylindrical wall of the cylindrical member is between the rectangular flat plate and the second end provided with helical plate means arranged symmetrically about the longitudinal central axis X of the cylindrical member.

Feed mixture distribution device

The invention relates to a method for the treatment of material containing at least one valuable metal and arsenic to form a valuable metal-depleted scorodite sediment and a pure aqueous solution to be discharged from the process. According to the method, the valuable metals are first removed from the material to be treated and then arsenic precipitation from the solution is performed in two stages. By means of the method, the aim is to obtain as low a valuable metal content as possible in the scorodite sediment that will be formed. Likewise, the arsenic and valuable metal content of the aqueous solution that is formed during arsenic precipitation also remains so low that the water can be released into the environment.

Method for the recovery of valuable metals and arsenic from a solution

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Helsinki, Finland

Jaana Romppanen