Outotec Oyj

Outokumpu Oyj

Outokumpu Technology Oy

Intune Circuits Oy

Pekka Taskinen

Jens Nyberg

Tuija Suortti

Heljä Peltola

Helja Peltola

Olli Hyvärinen

Maija-Leena Metsärinta

Juha Järvi

Aija Rytioja

Henri K Virtanen

Marko Hanhikorpi

Samuli Strömberg

Lauri Huhtasalo

Michael Gasik

Heikki Takala

Wolf-Christoph Rauser

Olli Järvinen

Leo Lindroos

Harri Natunen

Jorma Panula

Dag Berg

Heikki Siirilä

V&euml;ikko Polvi

The invention relates to a method for producing gaseous hydrogen and strong sulphuric acid (97-100 wt-%) simultaneously from sulphur dioxide gas and water. Sulphur dioxide gas stream is divided into two separate sub-streams, the first sub-stream is routed for water decomposition in a partial thermochemical cycle of the hydrogen and sulphuric acid production and the second sub-stream is fed to the oxidation of the sulphur dioxide to sulphur trioxide.

Method for producing hydrogen and sulphuric acid

The method and furnace according to the invention enable a continuous processing of anode slime and are particularly suited to be connected to a process where anode slime is treated by hydrometallurgic methods after roasting. In the method according to the invention, the slime containing valuable metals and selenium is dried, roasted, sulfatized and cooled. The method includes steps to be carried out in succession, in continuous operation, so that the slime forms a slime layer on the conveyor and is conveyed to be treated in successive drying, roasting, sulfatizing and sulfuric acid removal and cooling units.

Method and device for treating anode slime

The invention relates to a method for producing magnetically active shape memory metal alloy, said metal alloy containing nickel, manganese and gallium. In the method, the different components of the metal alloy are melted, and the melt is homogenized essentially at the melting temperature; the obtained metal alloy is cast, and the cast metal alloy is subjected to directional solidification at 10-100&#xb0; C. below the liquidus temperature of said metal alloy.

Method for producing magnetically active shape memory metal alloy

The invention relates to a method for the removal of mercury from gas containing sulphur dioxide and oxygen and from the sulphuric acid vapour contained in the gas. According to the method, the gas is washed with a water solution that contains selenium ions, whereby metallic selenium is formed in the presence of oxygen, which precipitates the mercury in the gas and vapour either as a selenide or in a chlorine-containing environment, as a dichloride of mercury and selenium. Gas washing occurs at a low temperature, below 50&#xb0; C.

Method for removing mercury from gas

This invention relates to a method for removing mercury from dilute sulphuric acid. According to the method sulphuric acid solution is scrubbed with an aqueous solution containing thiosulphate, which precipitates the mercury present in the sulphuric acid solution either as mercury sulphide or, in a chlorine-containing environment, as a mercury sulphide-mercury chloride double salt. The quantity of thiosulphate to be fed is adjusted so that it precipitates the mercury in the sulphuric acid solution, but still does not form elemental sulphur.

Method for the removal of mercury from sulphuric acid with thiosulphate precipitation

The present invention relates to a method for manufacturing an electrically conductive pattern by printing a layer comprising metal oxide on a carrier substrate () and reducing the metal oxide to metal. The reduced layer is transferred to an application substrate (). The present invention also relates to the use of the method.

Method for manufacturing in electrically conductive pattern

The present invention relates to method, which helps to reduce and remove the build-up forming on the grate of a fluidized-bed furnace in the roasting of fine-grained material such as concentrate. The concentrate is fed into the roaster from the wall of the furnace, and oxygen-containing gas is fed via gas nozzles under the grate in the bottom of the furnace in order to fluidize the concentrate and oxidize it during fluidization. Below the concentrate feed point, or feed grate, the oxygen content of the gas to be fed is raised compared with the oxygen content of the gas fed elsewhere.

Method for reducing build-up on a roasting furnace grate

This invention relates to a method for stabilizing a fluidized bed used in roasting by adjusting the oxygen content of the roasting gas in the bed. The fine-grained material for roasting is fed into the furnace above the fluidized bed and the roasting gas, which causes the fluidizing, is fed into the bottom of the furnace through a grate. In this method, the total amount of oxygen in the roasting gas to be fed and the average total oxygen requirement of the material to be roasted are calculated and the ratio between them regulated so that the oxygen coefficient in the bed is over 1.

Method for the stabilization of a fluidized bed in a roasting furnace

A method for making a joint between copper or copper alloys and austenitic steel alloys, in which method in between the junction surfaces of the objects to be joined together, there is arranged at least one intermediate layer, so that the junction surfaces, including their intermediate layers, are pressed together, and at least the junction area is heated in order to create a diffusion joint. In the method, there is brought a first intermediate layer ( ) on the junction surface of the steel object ( ) or against said surface, in order to activate the creation of the diffusion joint.

Method for making a joint between copper and stainless steel

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Pori, Finland

Pekka Taskinen