公开(公告)号：US20180073102A1

公开(公告)日：2018-03-15

申请号：US15564478

申请日：2016-04-08

Applicant: OUTOTEC (FINLAND) OY

Inventor： Peter BJÖRKLUND ,  Oskari KARHUVAARA ,  Mikael P. JÅFS ,  Lauri P. PESONEN

IPC: C22B7/00 ,  C22B7/04 ,  C22B5/12

Abstract: Provided are a method and an arrangement for operating a metallurgical furnace. The method comprises a feeding step, and a temperature controlling step for controlling the temperature of a molten metal layer and a slag layer in a furnace space of the metallurgical furnace. The temperature controlling step comprises a first measuring step for measuring the slag temperature (Tslag), a second measuring step for measuring the slag liquidus temperature (Tslag, liquidus), and a calculating step for calculating a superheat temperature (Tsuperheat) by calculating the temperature difference between the slag temperature (Tslag) and the slag liquidus temperature (Tslag, liquidus). In case the calculated superheat temperature (Tsuperheat) is outside a predefined superheat temperature range (Tsuperheat set), the method comprises an adjusting step for adjusting to adjust the actual superheat temperature. Also provided are computer program products.

公开(公告)号：US20180156541A1

公开(公告)日：2018-06-07

申请号：US15564150

申请日：2016-04-07

Applicant: OUTOTEC (FINLAND) OY

Inventor： Elli MIETTINEN ,  Sarianna SUOMINEN ,  Lauri P. PESONEN ,  Aki LAANINEN ,  Tapio AHOKAINEN ,  Kaj EKLUND ,  Markku LAHTINEN ,  Peter BJÖRKLUND

IPC: F27D99/00

CPC classification number: F27D99/0033 ,  F27D2099/004

Abstract: Provided is a burner such as a concentrate burner or a matte burner for feeding reaction gas and fine solids into a reaction shaft of a suspension smelting furnace. The burner comprises an annular fine solids discharge channel that is radially limited at the outside by a first annular wall and that is radially limited at the inside by a second annular wall. The annular fine solids discharge channel is configured to receive fine solids from a fine solids feeding arrangement and to create an annular flow of fine solids in the annular fine solids discharge channel. The annular fine solids discharge channel being provided with spreading means configured to be hit by the annular flow of fine solids and configured to even out particle distribution in the annular flow of fine solids.

公开(公告)号：US20170191760A1

公开(公告)日：2017-07-06

申请号：US15302086

申请日：2015-04-10

Applicant: OUTOTEC (FINLAND) OY

Inventor： Aki LAANINEN ,  Elli MIETTINEN ,  Peter BJÖRKLUND ,  Lauri P. PESONEN

IPC: F27D21/02 ,  F23N5/08 ,  F27D21/00

CPC classification number: F27D21/02 ,  F23N5/08 ,  F23N5/082 ,  F23N2029/14 ,  F23N2029/16 ,  F23N2029/20 ,  F27D21/00 ,  F27D2021/026

Abstract: Provided are a method and an arrangement for monitoring performance of a burner of a suspension smelting furnace. The burner is arranged at the top structure of a reaction shaft of the suspension smelting furnace. The burner has a solids feeding channel that has a solids outlet opening up into the reaction shaft, and a reaction gas channel comprising a reaction gas channel a that has a reaction gas outlet opening up into the reaction shaft. The arrangement comprises at least one imaging means for producing images representing the cross-section of the reaction gas channel, and a processing means for receiving images of the cross-section of the reaction gas channel from the imaging means.