21.
    发明专利
    未知

    公开(公告)号:NO20053270L

    公开(公告)日:2005-08-15

    申请号:NO20053270

    申请日:2005-07-04

    Applicant: OUTOKUMPU OY

    Abstract: The invention relates to a method of controlling the process conditions, in particular the temperature, in a reactor ( 1 ) of a plant into which, in particular, granular material is introduced and transported through a conveying line ( 14 ) to the reactor ( 1 ). In order to keep the process conditions in the reactor as constant as possible, the material quantity transported in the conveying line ( 14 ) is determined and is used as control variable and/or disturbance variable for controlling the process conditions, in particular the temperature. A plant for carrying out this method is also described.

    22.
    发明专利
    未知

    公开(公告)号:NO20053293D0

    公开(公告)日:2005-07-05

    申请号:NO20053293

    申请日:2005-07-05

    Applicant: OUTOKUMPU OY

    Abstract: The present invention relates to a method for the heat treatment of fine-grained solids, in particular gypsum, in which the solids are heated to a temperature of 50 to 1000° C. in a fluidized bed reactor (1), and to a corresponding plant. To improve the energy utilization, it is proposed to introduce a first gas or gas mixture from below through a preferably central gas supply tube (3) into a mixing chamber (21) of the reactor (1), the gas supply tube (3) being at least partly surrounded by a stationary annular fluidized bed (2) which is fluidized by supplying fluidizing gas, and to adjust the gas velocities of the first gas or gas mixture as well as of the fluidizing gas for the annular fluidized bed (2) such that the particle Froude numbers in the gas supply tube (3) are between 1 and 100, in the annular fluidized bed (2) between 0.02 and 2 and in the mixing chamber (21) between 0.3 and 30.

    23.
    发明专利
    未知

    公开(公告)号:NO20053290D0

    公开(公告)日:2005-07-05

    申请号:NO20053290

    申请日:2005-07-05

    Applicant: OUTOKUMPU OY

    Abstract: This invention relates to a method for the thermal treatment of granular solids in a reactor ( 1 ) with swirl chamber ( 4 ), which in particular constitutes an flash reactor or suspension reactor, wherein the microwave radiation from a microwave source ( 2 ) is fed into the reactor ( 1 ) through a wave guide, and to a corresponding plant. To avoid deposits in the wave guide, the same constitutes a gas supply tube ( 3 ), a gas stream being additionally fed through the gas supply tube ( 3 ) into the swirl chamber ( 4 ).

    24.
    发明专利
    未知

    公开(公告)号:NO20053269D0

    公开(公告)日:2005-07-04

    申请号:NO20053269

    申请日:2005-07-04

    Applicant: OUTOKUMPU OY

    Abstract: A plant for producing metal oxide from metal compounds includes a fluidized-bed reactor in which the metal compounds are heated by a combustion of a fuel to produce metal oxide. The fluidized-bed-reactor reactor includes at least one gas supply tube at least partly surrounded by an annular chamber in which a stationary annular fluidized bed is disposed, and a mixing chamber disposed above an orifice region of the gas supply tube. A gas flowing through the gas supply tube entrains solids from the stationary annular fluidized bed when passing through the orifice region.

    METHOD FOR INTRODUCING A GRANULAR ORE INTO A ROASTING KILN

    公开(公告)号:BG107883A

    公开(公告)日:2004-07-30

    申请号:BG10788303

    申请日:2003-06-05

    Applicant: OUTOKUMPU OY

    Abstract: According to the method, granular ore or ore concentrate is introduced into a kiln (1) for roasting the ore at temperatures of 400 to 1050 degrees C, whereby the ore in the kiln forms a stationary fluidised bed (3). The ore is projected onto the fluidised bed through an opening (16) in the kiln housing located above said fluidised bed, the ore being accelerated by the blades (14) of a rotating projection wheel. Said projection wheel (14) lies outside the kiln in the vicinity of the housing opening. Preferably, the speed of the projection wheel is variable and the projection wheel can be displaced and/or pivoted in relation to the kiln (1). 6 claims, 2 figures

    METHOD AND PLANT FOR THE HEAT TREATMENT OF SULFIDIC ORES USING ANNULAR FLUIDIZED

    公开(公告)号:AU2003296631A1

    公开(公告)日:2004-07-14

    申请号:AU2003296631

    申请日:2003-12-10

    Applicant: OUTOKUMPU OY

    Abstract: The invention relates to a method and a plant for the heat treatment of sulfidic ores, in which solids are heated to a temperature of approximately 450 to 1500° C. in a fluidized bed reactor ( 1 ). In order to improve the energy utilization, it is proposed to introduce a first gas or gas mixture from below through a gas supply tube ( 3 ) into a mixing chamber ( 7 ) of the reactor ( 1 ), the gas supply tube ( 3 ) being at least partly surrounded by a stationary annular fluidized bed ( 35 ) which is fluidized by supplying fluidizing gas. The gas velocities of the first gas or gas mixture as well as of the fluidizing gas for the annular fluidized bed ( 35 ) are adjusted such that the particle Froude numbers in the gas supply tube ( 3 ) are between 1 and 100, in the annular fluidized bed ( 35 ) between 0.02 and 2 and in the mixing chamber ( 7 ) between 0.3 and 30.

    METHOD AND APPARATUS FOR HEAT TREATMENT IN A FLUIDIZED BED

    公开(公告)号:AU2003290002A1

    公开(公告)日:2004-07-14

    申请号:AU2003290002

    申请日:2003-12-10

    Applicant: OUTOKUMPU OY

    Abstract: The present invention relates to a method for the heat treatment of fine-grained solids, in particular gypsum, in which the solids are heated to a temperature of 50 to 1000° C. in a fluidized bed reactor (1), and to a corresponding plant. To improve the energy utilization, it is proposed to introduce a first gas or gas mixture from below through a preferably central gas supply tube (3) into a mixing chamber (21) of the reactor (1), the gas supply tube (3) being at least partly surrounded by a stationary annular fluidized bed (2) which is fluidized by supplying fluidizing gas, and to adjust the gas velocities of the first gas or gas mixture as well as of the fluidizing gas for the annular fluidized bed (2) such that the particle Froude numbers in the gas supply tube (3) are between 1 and 100, in the annular fluidized bed (2) between 0.02 and 2 and in the mixing chamber (21) between 0.3 and 30.

    METHOD AND PLANT FOR REMOVING GASEOUS POLLUTANTS FROM EXHAUST GASES

    公开(公告)号:AU2003288060A1

    公开(公告)日:2004-07-14

    申请号:AU2003288060

    申请日:2003-11-14

    Applicant: OUTOKUMPU OY

    Abstract: The present invention relates to a method for removing gaseous pollutants from exhaust gases, in which the gaseous pollutants react with a fine-grained reactant by forming solids in a fluidized-bed reactor (2), and to a corresponding plant. To achieve low pollutant concentrations in the clean gas with an almost stoichiometric consumption of reactant, it is proposed to introduce the exhaust gas from below through a preferably central gas supply tube ( 20 ) into a mixing chamber ( 21 ) of the reactor ( 2 ), the gas supply tube ( 20 ) being at least partly surrounded by a stationary annular fluidized bed ( 22 ) of reactant, which bed is fluidized by supplying fluidizing gas, and to adjust the the gas velocities of the exhaust gas and of the fluidizing gas for the annular fluidized bed ( 22 ) such that the Particle-Froude-Numbers in the gas supply tube ( 20 ) are between 1 and 100, in the annular fluidized bed ( 22 ) between 0.02 and 2, and in the mixing chamber ( 21 ) between 0.3 and 30.

    Method for introducing a granular ore into a roasting kiln

    公开(公告)号:AU3452902A

    公开(公告)日:2002-06-18

    申请号:AU3452902

    申请日:2001-11-27

    Applicant: OUTOKUMPU OY

    Abstract: Granular ore or ore concentrate is charged into a furnace for calcining the ore at temperatures of 400 to 1050° C., the ore forming a stationary fluidized bed in the furnace. The ore is thrown onto the fluidized bed through an opening in the furnace housing disposed above the fluidized bed, the ore being accelerated by blades of a rotating impeller. The impeller is disposed outside the furnace in the vicinity of the opening of the housing. Preferably, the rotational speed of the impeller is variable, and the impeller is movable and/or pivotable with respect to the furnace.

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