Outotec (finland) Oy

Outotec Oyj

Markku Lahtinen

Peter Björklund

Tapio Ahokainen

Lauri P Pesonen

Jussi Sipilä

Kaarle Peltoniemi

Mikael P Jåfs

Aki Laaninen

Kaj Eklund

Elli Miettinen

Sarianna Suominen

Jouni Pihlasalo

Tuomo Jokinen

Harri Rannikko

Maija Metsärinta

Mikael JÅFS

The invention relates to a method for controlling suspension in a suspension smelting furnace. The method comprises feeding additionally to pulverous solid matter and additionally to reaction gas reducing agent into the suspension smelting furnace, wherein reducing agent is fed in the form of a concentrated stream of reducing agent through the suspension in the reaction shaft onto the surface of the melt to form a reducing zone containing reducing agent within the collection zone of the melt.

Method for controlling the suspension in a suspension smelting furnace

The invention relates to a method and to an arrangement for feeding fine-grained matter to a concentrate or matte burner () of a suspension smelting furnace (). The arrangement comprising a fluidization arrangement () for feeding fluidized fine-grained matter into a dosing bin (), and a conveyor means () for feeding fluidized fine-grained matter from the dosing bin () to the concentrate or matte burner () of the suspension smelting furnace (), and a loss-in-weight controller () between the dosing bin () and the conveyor means (). The arrangement comprises an impact cone () arranged below a filling valve () between the fluidization arrangement () and the dosing bin () for distributing fluidized fine-grained matter flowing from the fluidization arrangement () within the dosing bin ().

Method and arrangement for feeding fine-grained matter to a concentrate or matte burner of a suspension smelting furnace

The present invention provides a method of converting copper containing material to blister copper comprising: (a) providing copper containing material comprising copper sulfides and iron sulfides, whereby the copper containing material comprises at least 35 wt % copper of the total weight of the copper containing material; (b) reacting the copper containing material in a furnace with an oxygen containing gas, in the absence of flux, to effect oxidation of iron sulfide and copper sulfide, and controlling injection of the oxygen containing gas and the temperature so that the resulting converter slag is in a molten phase to obtain blister copper and converter slag.

Method of converting copper containing material

An arrangement for feeding fine-grained matter to a concentrate or matte burner () of a suspension smelting furnace (). The arrangement comprising a fluidization arrangement () for feeding fluidized fine-grained matter into a dosing bin (), and a conveyor means () for feeding fluidized fine-grained matter from the dosing bin () to the concentrate or matte burner () of the suspension smelting furnace (), and a loss-in-weight controller () between the dosing bin () and the conveyor means (). The arrangement comprises an impact cone () arranged below a filling valve () between the fluidization arrangement () and the dosing bin () for distributing fluidized fine-grained matter flowing from the fluidization arrangement () within the dosing bin ().

The invention relates to a method of using a suspension smelting furnace and to a suspension smelting furnace and to a concentrate burner (). The concentrate burner () comprises a first gas supply device () for feeding a first gas () into the reaction shaft () and a second gas supply device () for feeding a second gas () into the reaction shaft (). The first gas supply device () comprises a first annular discharge opening (), which which is arranged concentrically with the mouth () of a feeder pipe (), so that the first annular discharge opening () surrounds the feeder pipe (). The second gas supply device () comprises a second annular discharge opening (), which is arranged concentrically with the mouth () of the feeder pipe (), so that the second annular discharge opening () surrounds the feeder pipe () opening ().

Method of using a suspension smelting furnace, a suspension smelting furnace, and a concentrate burner

A method is provided for producing matte such as copper or nickel matte or crude metal such as blister copper in a suspension smelting furnace such as a flash smelting furnace or a flash converting furnace. Also provided is a suspension smelting furnace such as a flash smelting furnace or a flash converting furnace. The suspension smelting furnace comprises a reaction shaft, a settler in communication with a lower end of the reaction shaft, and an uptake shaft. The settler extending in two opposite directions from a landing zone for a jet of oxidized suspension below the reaction shaft in the settler so that the settler comprises a first settler part on a first side of the landing zone and a second settler part on an opposite second side of the landing zone.

Method for producing matte or crude metal in a suspension smelting furnace and suspension smelting furnace

The invention relates to a method for controlling suspension () in a suspension smelting furnace (), to a suspension smelting furnace, and to a concentrate burner (). The method comprises feeding additionally to pulverous solid matter () and additionally to reaction gas () reducing agent () into the suspension smelting furnace (), wherein reducing agent () is fed in the form of a concentrated stream of reducing agent () through the suspension () in the reaction shaft () onto the surface () of the melt () to form a reducing zone () containing reducing agent () within the collection zone () of the melt ().

Method for controlling the suspension in a suspension smelting furnace, a suspension smelting furnace, and a concentrate burner

The invention relates to a method and to an arrangement for refining copper concentrate. The arrangement includes a suspension smelting furnace comprising a reaction shaft, and a settler. The reaction shaft is provided with a concentrate burner for feeding copper concentrate such as copper sulfide concentrate and/or copper matte and additionally at least reaction gas into the reaction shaft to obtain a blister layer containing blister and a first slag layer containing slag on top of the blister layer in the settler, and a slag cleaning furnace. The arrangement includes a feeder configured for feeding blister from the blister layer in the settler and for feeding slag from the first slag layer in the settler into the slag cleaning furnace.

Method and arrangement for refining copper concentrate

The invention relates to a method of using a suspension smelting furnace and to a suspension smelting furnace and to a concentrate burner (). The concentrate burner () comprises a first gas supply device () for feeding a first gas () into the reaction shaft () and a second gas supply device () for feeding a second gas () into the reaction shaft (). The first gas supply device () comprises a first annular discharge opening (), which is arranged concentrically with the mouth () of a feeder pipe (), so that the first annular discharge opening () surrounds the feeder pipe (). The second gas supply device () comprises a second annular discharge opening (), which is arranged concentrically with the mouth () of the feeder pipe (), so that the second annular discharge opening () surrounds the feeder pipe () opening ().

The invention relates to a method of controlling the thermal balance of the reaction shaft of a suspension smelting furnace and to a concentrate burner for feeding reaction gas and pulverous solid mater into the reaction shaft of the suspension smelting furnace. In the method, endothermic material () is fed by the concentrate burner () to constitute part of the mixture formed from the powdery solid matter () and reaction gas (), so that a mixture containing the powdery solid matter (), reaction gas () and endothermic material () is formed in the reaction shaft (). The concentrate burner () comprises cooling agent feeding equipment () for adding the endothermic material () to constitute part of the mixture, which is formed from the pulverous solid matter () that discharges from the orifice () of the feeder pipe and the reaction gas () that discharges through the annular discharge orifice ().

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Espoo, Finland

Markku Lahtinen