FI124492B - PROCEDURES AND ARRANGEMENTS FOR SUPPLYING POWDER-SHEET SOLID MATERIAL TO A SLIG BURNER IN A SUSPENSION MIXTURE - Google Patents

PROCEDURES AND ARRANGEMENTS FOR SUPPLYING POWDER-SHEET SOLID MATERIAL TO A SLIG BURNER IN A SUSPENSION MIXTURE Download PDF

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Publication number
FI124492B
FI124492B FI20125471A FI20125471A FI124492B FI 124492 B FI124492 B FI 124492B FI 20125471 A FI20125471 A FI 20125471A FI 20125471 A FI20125471 A FI 20125471A FI 124492 B FI124492 B FI 124492B
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FI
Finland
Prior art keywords
screening
powdered solid
opening
strainer
channel
Prior art date
Application number
FI20125471A
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Finnish (fi)
Swedish (sv)
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FI20125471A (en
Inventor
Lauri Pesonen
Mikko Korpi
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Outotec Oyj
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Priority to FI20125471A priority Critical patent/FI124492B/en
Priority to CN2012202202470U priority patent/CN202647830U/en
Publication of FI20125471A publication Critical patent/FI20125471A/en
Application granted granted Critical
Publication of FI124492B publication Critical patent/FI124492B/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D3/00—Charging; Discharging; Manipulation of charge
    • F27D3/18—Charging particulate material using a fluid carrier
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
    • B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
    • B07B1/00—Sieving, screening, sifting, or sorting solid materials using networks, gratings, grids, or the like
    • B07B1/46—Constructional details of screens in general; Cleaning or heating of screens
    • B07B1/50—Cleaning
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B15/00—Obtaining copper

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Description

METHOD AND ARRANGEMENT FOR FEEDING POWDERY SOLID MATTER TO A CONCENTRATE BURNER OF A SUSPENSION SMELTING FURNACE
5 Field of the invention
The invention relates to a method for feeding powdery solid matter to a concentrate burner of a suspension smelting furnace as defined in the preamble of independent claim 1, wherein the method comprises using a concentrate burner comprising reaction gas feeding means, powdery solid matter feeding means and a concentrate distributor, and using a powdery 10 solid matter feeding pipe means having a channel for feeding powdery solid matter from a powdery solid matter source into the powdery solid matter feeding means of the concentrate burner, and wherein the method comprises a feeding step for feeding powdery solid matter feed to a concentrate burner of a suspension smelting furnace by means of the powdery solid matter feeding pipe means so that a flow of powdery solid matter is created in the channel of the 15 powdery solid matter feeding pipe means.
The invention also relates to an arrangement for feeding powdery solid matter to a concentrate burner of a suspension smelting furnace as defined in the preamble of independent claim 12, wherein the concentrate burner comprises reaction gas feeding means, powdery solid matter feeding means and a concentrate distributor, and wherein the arrangement comprising a 20 powdery solid matter feeding pipe means having a channel for feeding powdery solid matter from a powdery solid matter source into the powdery solid matter feeding means of the concentrate burner.
The feed of powdery solid matter, such as concentrate, slag forming agents and flue dust into a suspension smelting furnace is carried out through a concentrate burner that is placed on 25 top of the reaction shaft of the suspension smelting furnace. It is extremely important for the proper operation of the concentrate burner that the powdery solid matter and process gases are evenly mixed, when discharging from the concentrate burner into the reaction space, i.e., into the ^ upper section of the reaction shaft of the suspension smelting furnace. If this is not the case, the o ^ result is on the one hand an area of under-reacted concentrate, where there is more powdery solid 00 o 30 matter than the targeted process gas/concentrate ratio and, on the other hand an area of over- c\j reacted powdery solid matter, where there is less powdery solid matter than the targeted process gas/concentrate ratio. Poor mixing results in poor slag quality, for example.
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Poor distribution of powdery solid matter also has an obvious effect on the temperature profile of the reaction shaft; hot areas are generated in the suspension smelting furnace, where
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35 the autogenous lining that is formed by the powdery solid matter, protecting the reaction shaft, is S subjected to greater thermal stresses and the result may in the worst case lead to the destruction of the reaction shaft wall. It has also been indicated that dust formation is more marked when the concentrate burner does not function properly due to poor distribution of powdery solid matter.
2
One cause of poor distribution of powdery solid matter is that the powdery solid matter may contain coarse elements such as large concentrate pieces and polymer scrap.
Objective of the invention 5 The object of the invention is to provide a method and an arrangement for feeding powdery solid matter feed to a concentrate burner of a suspension smelting furnace that reduces the effect possible coarse element in the powdery solid matter has on the distribution of powdery solid matter.
10 Short description of the invention
The method for feeding powdery solid matter feed to a concentrate burner of a suspension smelting furnace of the invention is characterized by the definitions of independent claim 1.
Preferred embodiments of the method are defined in the dependent claims 2 to 11.
15 The arrangement for feeding powdery solid matter feed to a concentrate burner of a suspension smelting furnace of the invention is correspondingly characterized by the definitions of independent claim 12.
Preferred embodiments of the arrangement are defined in the dependent claims 13 to 22. The invention is based on providing a screening means, which has apertures of a 20 predetermined aperture size for screening out coarse elements from the flow of powdery solid matter of a size greater than the predetermined aperture size and on arranging the screening means in the channel of the powdery solid matter feeding pipe means in a screening position in which the screening means is at least partly arranged in the flow of powdery solid matter in the channel of a powdery solid matter feeding pipe means for screening out coarse elements from the 25 flow of powdery solid matter of a size greater than the predetermined aperture size.
List of figures ^ In the following the invention will described in more detail by referring to the figures, o ^ which o 30 Figure 1 is a basic illustration of a suspension smelting furnace and its feeding ^ equipment, g Figure 2 is a vertical section of a concentrate burner that is provided in the top section of
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a reaction shaft of a suspension smelting furnace, wherein the concentrate burner is provided with a powdery solid matter feeding means, m rvJ 35 Figure 3 is a partly transparent and cut view of a detail of a powdery solid matter pipe S feed means for feeding powdery solid matter from a powdery solid matter source into the powdery solid matter feeding means of a concentrate burner,
Figure 4 is a detail view of an embodiment of the arrangement in a situation where a 3 screening means has been moved to a screening position to remove coarse elements from a flow of powdery solid matter in a channel of a powdery solid matter feeding means,
Figure 5 is another detail view of the embodiment of the arrangement shown in figure 4 in a situation where the screening means has been moved to a cleaning position to clean the 5 screening means from coarse elements and to remove coarse element from the channel of the powdery solid matter feeding means, and
Figure 6 is another detail view of the embodiment of the arrangement shown in figure 4 in a situation after the situation illustrated in figure 5 and where the screening means has been moved back to the screening position to remove coarse elements from the flow of powdery solid 10 matter in the channel of the powdery solid matter feeding means.
Detailed description of the invention
The invention relates to a method and to an arrangement for feeding powdery solid matter (not shown in the figures) to a concentrate burner of a suspension smelting furnace.
15 Figure 1 shows a suspension smelting furnace 1 having a reaction shaft 2, a settler 3, an uptake shaft 4, and a concentrate burner 5 for feeding powdery solid matter and reaction gas into the reaction shaft 2.
The suspension smelting furnace 1 shown in figure 1 has additionally a powdery solid matter feeding pipe means 6 having a channel 7 (see figure 3) for feeding powdery solid matter 20 from a powdery solid matter source 8 into a powdery solid matter feeding means 9 of the concentrate burner 5.
The suspension smelting furnace 1 shown in figure 1 has additionally a reaction gas feeding pipe means 11 for feeding reaction gas (not shown in the figures) into a reaction gas feeding means 10 of the concentrate burner 5.
25 As the function of a such suspension smelting furnace is known for a person skilled in the art for example from publications US 2,506,557 and FI 1052828 B, the function of a such suspension smelting furnace will not be described in detail here.
^ First the method for feeding powdery solid matter feed to a concentrate burner 5 of a o ^ suspension smelting furnace 1 and some preferred and alternative embodiments of the method o 30 will be described in greater detail.
^ The method comprises using a concentrate burner 5 comprising reaction gas feeding means 10, powdery solid matter feeding means 9 and a concentrate distributor 12.
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The method comprises using a powdery solid matter feeding pipe means 6 having a ^ channel 7 for feeding powdery solid matter from a powdery solid matter source 8 into the cm 35 powdery solid matter feeding means 9 of the concentrate burner 5.
^ The method comprises a feeding step for feeding powdery solid matter to the concentrate burner 5 of the suspension smelting furnace 1 by means of the powdery solid matter feeding pipe means 6 so that a flow of powdery solid matter 19 is created in the channel 7 of the powdery 4 solid matter feeding pipe means 6.
The method comprises a providing step for providing a screening means 15, which has apertures 13 of a predetermined aperture size for screening out coarse elements 18 from the flow of powdery solid matter 19 of a size greater than the predetermined aperture size.
5 The method comprises an arranging step for arranging the screening means 15 in the channel 7 of the powdery solid matter feeding pipe means 6 in a screening position in which the screening means 15 is at least partly arranged in the flow of powdery solid matter 19 in the channel 7 of the powdery solid matter feeding pipe means 6 for screening out coarse elements 18 from the flow of powdery solid matter 19 of a size greater than the predetermined aperture size. 10 The screening means 15 can be fixedly or releasable arranged in the channel 7 of the powdery solid matter feeding pipe means 6 in the arranging step.
The method comprises a screening step for removing coarse elements 18 from the flow of powdery solid matter 19 in the channel 7 of the powdery solid matter feeding pipe means 6 of a size greater than the predetermined aperture size.
15 The arranging step comprises arranging the screening means 15 movable in the powdery solid matter feeding pipe means 6 so that the screening means 15 are movable between the screening position in which the screening means 15 is at least partly arranged in the flow of powdery solid matter 19 in the channel 7 of the powdery solid matter feeding pipe means 6 for screening out coarse elements 18 from the flow of powdery solid matter 19 of a size greater than 20 the predetermined aperture size and a cleaning position for cleaning the screening means 15 from coarse elements 18 and for removing coarse elements 18 from the channel 7 of the powdery solid matter feeding means 9.
The method comprises a cleaning step for removing coarse elements 18 from the screening means 15 and from the channel 7 including firstly moving the screening means 15 into 25 said cleaning position for cleaning the screening means 15 from coarse elements 18 and for removing coarse elements 18 from the channel 7 of the powdery solid matter feeding means 9, and subsequently moving the screening means 15 into said screening position in which the ? screening means 15 is at least partly arranged in the flow of powdery solid matter 19 in the o ^ channel 7 of the powdery solid matter feeding pipe means 6 for screening out coarse elements 18 00 o 30 from the flow of powdery solid matter 19 of a size greater than the predetermined aperture size.
The method may include arranging the screening means 15 in the arranging step in the channel 7 of the powdery solid matter feeding pipe means 6 between so that the screening means 15 is tumable between the screening position and the cleaning position by turning the screening means 15 about an axis of rotation 20, and moving the screening means 15 in the cleaning step cvj 35 between the screening position and the cleaning position by turning the screening means 15 ° about the axis of rotation 20.
The method may include providing an opening 17 in the channel 7 of the powdery solid matter feeding pipe means 6, and moving the screening means 15 into a such cleaning position 5 where coarse elements 18 caught by the screening means 15 fall from the screening means 15 into said opening 17. A such opening 17 may be provided with an openable cover 16 for at least partly closing the opening 17, whereby the method comprises opening the opening 17 when moving the screening means 15 to the cleaning position, and correspondingly closing the 5 opening 17 when moving the screening means 15 to the screening position. If the method included providing the opening 17 with an openable cover 16, the screening means 15 may be moved into a such cleaning position where the screening means 15 are situated at least partly outside the channel 7 of the powdery solid matter feeding pipe means 6 so as to enable the opening 17 to be closed by means of the openable cover 16 while the screening means 15 are 10 situated at least partly outside the channel 7 of the powdery solid matter feeding pipe means 6. A such embodiment makes it possible to feed powdery solid matter 8 to the concentrate burner 5 while cleaning and/or repairing the screening means 15.
The method may include removing coarse elements 18 from the screening means 15 by means of gravity in the cleaning step, by shaking the screening means 15 in the cleaning step, by 15 throwing the coarse elements 18 by means of the screening means 15 from the coarse elements 18 in the cleaning step, and/or by mechanically cleaning the screening means 15 in the cleaning step.
An embodiment of the method includes a step for providing the screening means with steering means 21 for moving the screening means between the screening position and the 20 cleaning position such that the cleaning step includes moving the screening means between the screening position and the cleaning position by means of the steering means 21. This embodiment may include providing the screening means with controlling means 22 for controlling the steering means 21, and controlling the steering means 21 with the controlling means 22. The controlling means 22 may include a timer for controlling the steering means 21 so 25 that the screening means 15 is moved from the screening position to the cleaning position and back to the screening position for example with regular time intervals.
The providing step may include providing a screening means 15 in the having apertures ? 13 in the form of parallel elongated apertures having a width between 10 mm and 70 mm, o ^ preferably between 30 mm and 60 mm more preferable between 40 and 50 mm.
00 o 30 The providing step may include, as shown in figure 3, providing a screening means 15 comprising a bar screen (not marked with a reference numeral) having a plurality of parallel bars 14 so that apertures 13 in the form of parallel elongated apertures having a width between 10 mm
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and 70 mm, preferably between 30 mm and 60 mm, more preferable between 40 and 50 mm, are formed between two adjacent parallel bars 14.
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cm 35 The providing step may include, providing a screening means 15 comprising a grid (not cm shown in the figures) having apertures 13 of a predetermined aperture size for screening out coarse elements 18 from the flow of powdery solid matter 19 of a size greater than the predetermined aperture size.
6
The providing step may include providing a screening means 15 configured for screening out coarse elements 18 of at least 60 mm, preferably at least 50 mm, more preferably at least 40 mm.
Next the arrangement for feeding powdery solid matter feed to a concentrate burner 5 of 5 a suspension smelting furnace 1 and some preferred and alternative embodiments of the arrangement will be described in greater detail.
The concentrate burner 5 comprises reaction gas feeding means 10, powdery solid matter feeding means 9 and a concentrate distributor 12.
The arrangement comprises a powdery solid matter feeding pipe means 6 having a 10 channel 7 for feeding powdery solid matter from a powdery solid matter source 8 into the powdery solid matter feeding means 9 of the concentrate burner 5,
The arrangement comprises a screening means 15 having apertures 13 having a predetermined aperture size for screening out coarse elements 18 from the flow of powdery solid matter 19 of a size greater than the predetermined aperture size.
15 The screening means 15 is arranged in the channel 7 of the powdery solid matter feeding pipe means in a screening position in which the screening means 15 is at least partly arranged in the flow of powdery solid matter 19 in the channel 7 of the powdery solid matter feeding pipe means 6 for screening out coarse elements 18 from the flow of powdery solid matter 19 of a size greater than the predetermined aperture size. The screening means 15 can be fixedly or 20 releasable arranged in the channel 7 of the powdery solid matter feeding pipe means 6.
The screening means 15 are movable between the screening position in which the screening means 15 is at least partly arranged in the flow of powdery solid matter 19 in the channel 7 of the powdery solid matter feeding pipe means 6 for screening out coarse elements 18 from the flow of powdery solid matter 19 of a size greater than the predetermined aperture size 25 and a cleaning position for cleaning the screening means 15 from coarse elements 18 and for removing coarse elements 18 from the channel 7 of the powdery solid matter feeding means 9.
The screening means 15 may be tumable arranged with respect to the channel 7 of the ? powdery solid matter feeding pipe means 6 so that the screening means 15 can be turned about o ^ an axis of rotation 20 between the screening position and the cleaning position, o 30 The channel 7 may be provided with an opening 17, and the screening means 15 may be ^ arranged to remove coarse elements 18 caught by the screening means 15 from the channel 7 of the powdery solid matter feeding pipe means 6 via the opening 17. A such opening 17 is
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preferably, but not necessarily, provided with an openable cover 16 for at least partly closing the opening 17 in such way that the openable cover 16 is configured to open the opening 17 when
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<m 35 moving the screening means 15 to the cleaning position, and in such way that the openable cover S 16 is configured to close the opening 17 when moving the screening means 15 to the screening position. If the opening 17 is provided with an openable cover 16, the screening means 15 may preferably be configured moved into a such cleaning position where the screening means 15 are 7 situated at least partly outside the channel 7 of the powdery solid matter feeding pipe means 6 so as to enable the opening 17 to be closed by means of the openable cover 16 while the screening means 15 are situated at least partly outside the channel 7 of the powdery solid matter feeding pipe means 6. A such embodiment makes it possible to feed powdery solid matter 8 to the 5 concentrate burner 5 while cleaning and/or repairing the screening means 15.
The coarse particles may be configured to be removed from the screening means 15 by means of gravity in the cleaning position, by shaking the screening means 15 in the cleaning position, by throwing the coarse elements 18 by means of the screening means 15 from the screening means 15 in the cleaning position, and/or by mechanically cleaning the screening 10 means 15 in the cleaning position.
In an embodiment of the arrangement, the screening means are provided with steering means 21 for moving the screening means between the screening position and the cleaning position. In this embodiment the screening means may be provided with controlling means 22 for controlling the steering means 21. The controlling means 22 may include a timer for controlling 15 the steering means 21 so that the screening means 15 is moved from the screening position to the cleaning position and back to the screening position for example with regular time intervals.
The screening means 15 may have apertures 13 in the form of parallel elongated apertures having a width between 10 mm and 70 mm, preferably between 30 mm and 60 mm more preferable between 40 and 50 mm.
20 The screening means 15 may, as shown in figure 3, comprise a bar screen having a plurality of parallel bars 14 so that apertures 13 in the form of parallel elongated apertures having a width between 10 mm and 70 mm, preferably between 30 mm and 60 mm, more preferable between 40 and 50 mm, are formed between two adjacent parallel bars 14.
The screening means 15 may comprise a grid (not shown in the figures) having apertures 25 13 of a predetermined aperture size for screening out coarse elements 18 from the flow of powdery solid matter 19 of a size greater than the predetermined aperture size.
The screening means 15 being configured for screening out coarse elements 18 of at least ^ 60 mm, preferably at least 50 mm, more preferably at least 40 mm.
o ^ It is apparent to a person skilled in the art that as technology advances, the basic idea of o 30 the invention can be implemented in various ways. The invention and its embodiments are c\j therefore not restricted to the above examples, but they may vary within the scope of the claims, x
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Claims (22)

1. Menetelmä jauhemaisen kiintoaineen syöttämiseksi suspensiosulatusuunin (1) rikastepolttimelle (5), jolloin menetelmä käsittää: käytetään rikastepoltinta (5), joka käsittää reaktiokaasunsyöttövälineet (10), jauhemaisen 5 kiintoaineen syöttövälineet (9) ja rikasteen hajottajan (12), ja käytetään jauhemaisen kiintoaineen syöttöjohtovälineet (6), jolla on kanava (7) jauhemaisen kiintoaineen syöttämiseksi jauhemaisen kiintoaineen lähteestä (8) rikastepolttimen (5) jauhemaisen kiintoaineen syöttövälineisiin (9), ja jolloin menetelmä käsittää syöttövaiheen jauhemaisen kiintoaineen syöttämiseksi 10 suspensiosulatusuunin (1) rikastepolttimeen (5) jauhemaisen kiintoaineen syöttöjohtovälineillä (6) siten, että jauhemaisen kiintoaineen virtaus (19) syntyy jauhemaisen kiintoaineen syöttöjohtovälineiden (6) kanavassa (7), tunnettu, järjestelyvaiheesta siivilöintivälineiden (15) järjestämiseksi, joilla siivilöintivälineillä on 15 aukkoja (13), joilla on ennalta määritelty koko karkeiden elementtien (18) siivilöimiseksi jauhemaisen kiintoaineen virtauksesta (19), joiden karkeiden elementtien (18) koko on suurempi kuin ennalta määritelty aukkokoko, järjestelyvaiheesta siivilöintivälineiden (15) järjestämiseksi jauhemaisen kiintoaineen syöttöjohtovälineiden kanavaan (7) siivilöintiasentoon, jossa siivilöintivälineet (15) ovat ainakin 20 osittain järjestetty jauhemaisen kiintoaineen syöttöjohtovälineiden (6) kanavassa (7) olevassa jauhemaisen kiintoaineen virtauksessa (19) karkeiden elementtien (18) siivilöimiseksi jauhemaisen kiintoaineen virtauksesta (19), joiden karkeiden elementtien (18) koko on suurempi kuin ennalta määritelty aukkokoko, siivilöintivaiheesta karkeiden elementtien (18) siivilöimiseksi jauhemaisen kiintoaineen 25 syöttöjohtovälineiden (6) kanavassa (7) olevasta jauhemaisen kiintoaineen virtauksesta (19), joiden karkeiden elementtien (18) koko on suurempi kuin ennalta määritelty aukkokoko, ^ että järjestelyvaihe käsittää siivilöintivälineiden (15) järjestämisen liikuteltavasti o jauhemaisen kiintoaineen syöttöjohtovälineissä (6) siten, että siivilöintivälineet (15) ovat oö liikuteltavissa siivilöintiasennon, jossa siivilöintivälineet (15) ovat ainakin osittain jauhemaisen O 30 kiintoaineen syöttöjohtovälineiden (6) kanavassa (7) olevassa jauhemaisen kiintoaineen C\J virtauksessa (19) karkeiden elementtien (18) siivilöimiseksi jauhemaisen kiintoaineen £ virtauksesta (19), joiden karkeiden elementtien (18) koko on suurempi kuin ennalta määritelty aukkokoko, ja puhdistusasennon siivilöintivälineiden (15) puhdistamiseksi karkeista S elementeistä (18) ja karkeiden elementtien (18) poistamiseksi jauhemaisen kiintoaineen o 35 syöttöjohtovälineiden (6) kanavasta (7), välillä, ja CM puhdistusvaiheesta karkeiden elementtien (18) poistamiseksi siivilöintivälineistä (15) ja kanavasta (7) käsittäen ensinnäkin siivilöintivälineiden (15) liikuttamisen mainittuun puhdistusasentoon siivilöintivälineiden (15) puhdistamiseksi karkeista elementeistä (18) ja karkeiden elementtien (18) poistamiseksi jauhemaisen kiintoaineen syöttövälineiden (9) kanavasta (7), ja sen jälkeen siivilöintivälineiden (15) liikuttamisen mainittuun siivilöintiasentoon, jossa siivilöintivälineet (15) ovat ainakin osittain jauhemaisen kiintoaineen syöttöjohtovälineiden (6) kanavassa (7) olevassa jauhemaisen kiintoaineen virtauksessa (19) 5 karkeiden elementtien (18) siivilöimiseksi jauhemaisen kiintoaineen virtauksesta (19), joiden karkeiden elementtien (18) koko on suurempi kuin ennalta määritelty aukkokoko.A method for supplying a powdery solid to a concentrate burner (5) of a slurry melting furnace (1), the method comprising: using a concentrate burner (5) comprising reaction gas supply means (10), powdered solid supply means (9) and concentrate pulverizer (12); a feed line means (6) having a channel (7) for supplying a powdered solid from a powdered solid source (8) to a powdered solid supplying means (9) for a concentrate burner (5), wherein the method comprises a feeding step for feeding a powdered solid to a supply line means (6) such that a flow of powdered solid supply line (19) is provided in the channel (7) of the powder solid supply line means (6), characterized by an arrangement step for arranging the screening means (15) having a (13) having a predetermined size for screening the coarse elements (18) from the flow of powdered solid (19) having a size of coarse elements (18) larger than a predetermined aperture, from the step of arranging the screening means (15) for feeding the powder solids in a screening position, wherein the screening means (15) are at least 20 partially arranged in a powdered solid flow (19) in the channel (7) of the powdered solid feeder means (6) for screening the coarse elements (18) of the powdered solid flow (19) larger than a predetermined aperture size, from the screening step for screening the coarse elements (18) from the powdered solid flow (19) in the channel (7) of the powdered solid supply feed means (6) having the size of the coarse elements (18) wherein the arranging step comprises movably arranging the screening means (15) in the powder solids supply guide means (6) such that the screening means (15) are movable in a screening position in which the screening means (15) are at least partially open and 7) for screening the coarse elements (18) of the powdered solid C CJ flow (19) from the powdered solid virta virta stream (19) having a size of coarse elements (18) larger than a predetermined aperture size and for cleaning the filtering means (15) from the coarse elements (18) and for removing the coarse elements (18) from the passageway (7) of the powdered solid o 35 feed line means (6), and for the CM cleaning step to remove the coarse elements (18) from the screening means (15) and channel (7) moving the screening means (15) to said cleaning position to clean the screening means (15) from the coarse elements (18) and to remove the coarse elements (18) from the channel (7) of the powdered solid supply means (9), and then to move the screening means (15) ), at least partially, in the powdered solid flow (19) 5 in the passage (7) of the powdered solid feeder means (6) for screening the coarse elements (18) from the powdered solid flow (19) having a larger size than the predetermined aperture. 2. Patenttivaatimuksen 1 mukainen menetelmä, tunnettu siitä, että järjestetään siivilöintivälineet (15) järjestelyvaiheessa kiintoaineen 10 syöttöjohtovälineiden (6) kanavassa (7) siten, että siivilöintivälineet (15) ovat käännettävissä siivilöintiasennon ja puhdistusasennon välissä kääntämällä siivilöintivälineet (15) rotaatioakselin (20) suhteen, ja että siirretään siivilöintivälineet (15) puhdistusvaiheessa siivilöintiasennon ja puhdistusasennon välissä kääntämällä siivilöintivälineet (15) rotaatioakselin (20) suhteen. 15Method according to Claim 1, characterized in that the sieving means (15) are arranged in the channel (7) of the solid supply lines (6) so that the sieving means (15) can be rotated between the sieving position and the cleaning position by rotating the sieving means (15). and that the screening means (15) are moved during the cleaning step between the screening position and the cleaning position by rotating the screening means (15) with respect to the rotation axis (20). 15 3. Patenttivaatimuksen 1 tai 2 mukainen menetelmä, tunnettu siitä, että järjestetään kiintoaineen syöttöjohtovälineiden (6) kanavaan (7) aukko (17), ja että siirretään siivilöintivälineet (15) sellaiseen puhdistusasentoon, jossa siivilöintivälineiden (15) avulla kiinniotettuja karkeita elementtejä (18) putoaa 20 siivilöintivälineestä (15) mainittuun aukkoon (17).Method according to Claim 1 or 2, characterized in that an opening (17) is provided in the duct (7) of the solid feed supply means (6) and that the screening means (15) is moved to a cleaning position with coarse elements (18) captured by the screening means (15). drops from 20 strainers (15) into said opening (17). 4. Patenttivaatimuksen 3 mukainen menetelmä, tunnettu siitä, että varustetaan aukko (17) avattavalla kannella (16) aukon (17) sulkemiseksi ainakin osittain, 25 että avataan aukko (17) kun siivilöintivälineet (15) siirretään puhdistusasentoon, ja että suljetaan aukko (17) kun siivilöintivälineet (15) siirretään siivilöintiasentoon.Method according to claim 3, characterized in that the opening (17) is provided with an opening cover (16) for closing the opening (17) at least partially, opening the opening (17) when the screening means (15) is moved to a cleaning position and closing the opening (17). ) when the strainers (15) are moved to the strain position. ^ 5. Patenttivaatimuksen 4 mukainen menetelmä, tunnettu siitä, o ^ että siirretään siivilöintivälineet (15) sellaiseen puhdistusasentoon, jossa o 30 siivilöintivälineet (15) sijaitsevat ainakin osittain kiintoaineen syöttöjohtovälineiden (6) kanavan c\j (7) ulkopuolella, ja g että suljetaan aukko (17) avattavan kannen (16) avulla kun siivilöintivälineet (15) CL sijaitsevat ainakin osittain kiintoaineen syöttöjohtovälineiden (6) kanavan (7) ulkopuolella. 't LO cm 35Method according to claim 4, characterized in that the screening means (15) are moved to a cleaning position in which the screening means (15) are located at least partially outside the channel c1 (7) of the solid supply line means (6), and g an opening (17) by means of an opening lid (16) when the strainer means (15) CL is located at least partially outside the channel (7) of the solid supply line means (6). 't LO cm 35 6. Jonkin patenttivaatimuksen 1-5 mukainen menetelmä, tunnettu siitä, että karkeita S elementtejä (18) poistetaan siivilöintivälineestä (15) painovoiman avulla puhdistusvaiheessa, ravistamalla siivilöintivälinettä (15) puhdistusvaiheessa, heittämällä karkeat elementit (18) siivilöintivälineen (15) avulla puhdistusvaiheessa, ja/tai mekaanisesti puhdistamalla siivilöintivälinettä (15) puhdistusvaiheessa.Method according to one of Claims 1 to 5, characterized in that the coarse S elements (18) are removed from the screening means (15) by gravity during the cleaning step, by shaking the screening means (15) during the cleaning step, by throwing the coarse elements (18) through the screening means (15). / or mechanically cleaning the strainer (15) during the cleaning step. 7. Jonkin patenttivaatimuksen 1-6 mukainen menetelmä, tunnettu siitä, 5 että varustetaan siivilöintiväline (15) ohjausvälineillä (21) siivilöintivälineen (15) siirtämiseksi siivilöintiasennon ja puhdistu s asennon välissä, ja että puhdistusvaihe sisältää siivilöintivälineen (15) siirtämisen siivilöintiasennon ja puhdistusasennon välissä ohjausvälineiden (21) avulla.Method according to one of Claims 1 to 6, characterized in that the strainer (15) is provided with control means (21) for moving the strainer (15) between the strainer position and the cleaning position, and the cleaning step comprising moving the strainer (15) between the strainer position and the cleaning position. (21). 8. Patenttivaatimuksen 7 mukainen menetelmä, tunnettu siitä, että varustetaan siivilöintiväline (15) kontrollointivälineillä (22) ohjausvälineiden (21) kontrolloimiseksi, ja että kontrolloidaan ohjausvälineitä (21) kontrollointivälineillä (22).A method according to claim 7, characterized in that the screening means (15) is provided with control means (22) for controlling the control means (21), and that the control means (21) is controlled with control means (22). 9. Jonkin patenttivaatimuksen 1-8 mukainen menetelmä, tunnettu siitä, että järjestelyvaihe sisältää siivilöintivälineen (15) järjestämisen, jolla on aukkoja (13) pitkänomaisten yhdensuuntaisten aukkojen muodossa, joiden leveys on 10 mm - 70 mm, edullisesti 30 mm - 60 mm, edullisimmin 40 - 50 mm.Method according to one of Claims 1 to 8, characterized in that the arranging step comprises arranging a screening means (15) having openings (13) in the form of elongated parallel openings having a width of 10 mm to 70 mm, preferably 30 mm to 60 mm, most preferably 40 - 50 mm. 10. Jonkin patenttivaatimuksen 1-9 mukainen menetelmä, tunnettu siitä, että järjestelyvaihe sisältää siivilöintivälineen (15) järjestämisen, jolla on tankosiivilä, jossa on useita yhdensuuntaisia tankoja (14) siten, että aukkoja (13) yhdensuuntaisten pitkänomaisten aukkojen muodossa, joiden leveys on 10 mm - 70 mm, edullisesti 30 mm - 60 mm, edullisimmin 40 - 50 mm, muodostuu kahden vierekkäisen yhdensuuntaisen tangon (14) välissä. 25Method according to one of Claims 1 to 9, characterized in that the arranging step comprises providing a strainer (15) with a strainer having a plurality of parallel rods (14) such that the openings (13) are in the form of parallel elongated openings 10 mm to 70 mm, preferably 30 mm to 60 mm, most preferably 40 to 50 mm, is formed between two adjacent parallel bars (14). 25 11. Jonkin patenttivaatimuksen 1-10 mukainen menetelmä, tunnettu siitä, että järjestelyvaihe sisältää siivilöintivälineen (15) järjestämisen, joka on sovitettu siivilöimään pois ^ karkeita elementtejä (18), joiden koko on ainakin 60 mm, edullisesti ainakin 50 mm, o ^ edullisemmin ainakin 40 mm. i 00 o 30 c^jMethod according to one of Claims 1 to 10, characterized in that the arranging step comprises providing a screening means (15) adapted to screen out coarse elements (18) having a size of at least 60 mm, preferably at least 50 mm, more preferably at least 40 mm. i 00 o 30 c ^ j 12. Järjestely jauhemaisen kiintoaineen syöttämiseksi suspensiosulatusuunin (1) g rikastepolttimelle (5), CL jolloin rikastepoltin (5) käsittää reaktiokaasunsyöttövälineet (10), jauhemaisen !^: kiintoaineen syöttövälineet (9) ja rikasteen hajottajan (12), ja m cm 35 jolloin järjestely käsittää jauhemaisen kiintoaineen syöttöjohtovälmeet (6), jolla on S kanava (7) jauhemaisen kiintoaineen syöttämiseksi jauhemaisen kiintoaineen lähteestä (8) rikastepolttimen (5) jauhemaisen kiintoaineen syöttövälineisiin (9), tunnettu siivilöintivälineistä (15), joilla on aukkoja (13), joilla on ennalta määritelty koko karkeiden elementtien (18) siivilöimiseksi jauhemaisen kiintoaineen virtauksesta (19), joiden karkeiden elementtien (18) koko on suurempi kuin ennalta määritelty aukkokoko, että siivilöintivälineet (15) on jäljestetty jauhemaisen kiintoaineen syöttöjohtovälineiden 5 kanavaan (7) siivilöintiasentoon, jossa siivilöintivälineet (15) ovat ainakin osittain jauhemaisen kiintoaineen syöttöjohtovälineiden (6) kanavassa (7) olevassa jauhemaisen kiintoaineen virtauksessa (19) karkeiden elementtien (18) siivilöimiseksi jauhemaisen kiintoaineen virtauksesta (19), joiden karkeiden elementtien (18) koko on suurempi kuin ennalta määritelty aukkokoko, ja 10 että siivilöintivälineet (15) ovat liikuteltavissa siivilöintiasennon, jossa siivilöintivälineet (15) ovat järjestetty ainakin osittain jauhemaisen kiintoaineen syöttöjohtovälineiden (6) kanavassa (7) olevassa jauhemaisen kiintoaineen virtauksessa (19) karkeiden elementtien (18) siivilöimiseksi jauhemaisen kiintoaineen virtauksesta (19), joiden karkeiden elementtien (18) koko on suurempi kuin ennalta määritelty aukkokoko, ja puhdistusasennon siivilöintivälineiden 15 (15) puhdistamiseksi karkeista elementeistä (18) ja karkeiden elementtien (18) poistamiseksi jauhemaisen kiintoaineen syöttöjohtovälineiden (6) kanavasta (7), välillä.Arrangement for supplying a powdery solid to the concentrate burner (5) of a slurry melting furnace (1), wherein the concentrate burner (5) comprises reaction gas supply means (10), a powdered solid supply means (9) and a concentrator (12), comprising powdered solid feed supply means (6) having an S channel (7) for supplying powdered solid from a powdered solid source (8) to a concentrate burner (5) with powdered solid supply means (9), characterized by screening means (15) having openings (13) a predetermined size for screening the coarse elements (18) from the flow of powdered solid (19) having a size of coarse elements (18) larger than a predetermined aperture size, for screening means (15) 15) are a in an inlet flow stream (19) of partially powdered solid feed supply means (6) for sifting the powdered solid stream (19) from the powdered solid stream (19) having a size of the coarse elements (18) greater than a predetermined opening size; (15) are movable in a screening position in which the screening means (15) are arranged at least partially in a flow of powdered solid (19) in a flow (19) of powdered solid supply lines (6) from a stream of powdered solid (18) 18) is larger than a predetermined aperture size, and for cleaning position of the screening means 15 (15) between the coarse elements (18) and for removing coarse elements (18) from the channel (7) of the powdered solid supply conduit means (6). 13. Patenttivaatimuksen 12 mukainen järjestely, tunnettu siitä, että siivilöintivälineet (15) ovat käännettävissä rotaatioakselin (20) ympäri kiintoaineen 20 syöttöjohtovälineiden (6) kanavan (7) suhteen siten, että siivilöintivälineet (15) ovat käännettävissä siivilöintiasennon ja puhdistusasennon välissä.Arrangement according to Claim 12, characterized in that the screening means (15) are pivotable about the rotation axis (20) with respect to the passage (7) of the solid supply line means (6) such that the screening means (15) are pivotable between the screening position and the cleaning position. 14. Patenttivaatimuksen 12 tai 13 mukainen järjestely, tunnettu siitä, että kanava (7) on varustettu aukolla (17), ja 25 että siivilöintivälineet (15) on sovitettu poistamaan siivilöintivälineiden (15) avulla kiinniotettuja karkeita elementtejä (18) kiintoaineen syöttöjohtovälineiden (6) kanavasta (7) aukon (17) kautta. δArrangement according to Claim 12 or 13, characterized in that the channel (7) is provided with an opening (17), and in that the sieving means (15) are arranged to remove the coarse elements (18) captured by the sieving means (15). from the channel (7) through the opening (17). δ ^ 15. Patenttivaatimuksen 14 mukainen järjestely, tunnettu siitä, o 30 että aukko (17) on varustettu avattavalla kannella (16) aukon (17) sulkemiseksi ainakin osittain, g että avattava kansi (16) on sovitettu avaamaan aukon (17) kun siivilöintivälineet (15) siirretään puhdistusasentoon, ja ^ että avattava kansi (16) on sovitettu sulkemaan aukon (17) kun siivilöintivälineet (15) oj 35 siirretään siivilöintiasentoon. δ c\jAn arrangement according to claim 14, characterized in that the opening (17) is provided with an opening lid (16) for at least partially closing the opening (17), g that the opening lid (16) is arranged to open the opening (17) 15) is moved to the cleaning position, and that the opening lid (16) is adapted to close the opening (17) when the sieving means (15) and 35 are moved to the sieving position. δ c \ j 16. Patenttivaatimuksen 15 mukainen järjestely, tunnettu siitä, että siivilöintivälineet (15) ovat sovitettu siirtymään sellaiseen puhdistusasentoon, jossa siivilöintivälineet (15) sijaitsevat ainakin osittain kiintoaineen syöttöjohtovälineiden (6) kanavan (7) ulkopuolella, ja 5 että aukko (17) on sovitettu sulkeutumaan avattavan kannen (16) avulla kun siivilöintivälineet (15) sijaitsevat puhdistusasennossa ainakin osittain kiintoaineen syöttöjohtovälineiden (6) kanavan (7) ulkopuolella.Arrangement according to Claim 15, characterized in that the screening means (15) are arranged to move to a cleaning position in which the screening means (15) are located at least partially outside the channel (7) of the solids supplying means (6) and by means of an opening lid (16), when the screening means (15) are located at least partially outside the channel (7) of the solid supply lines (6) in the cleaning position. 17. Jonkin patenttivaatimuksen 12 - 16 mukainen järjestely, tunnettu siitä, että karkeat 10 elementit (18) on sovitettu poistumaan siivilöintivälineestä (15) painovoiman avulla puhdistusasennossa, ravistamalla siivilöintivälinettä (15) puhdistusasennossa, heittämällä karkeat elementit (18) siivilöintivälineen (15) avulla puhdistusasennossa, ja/tai mekaanisesti puhdistamalla siivilöintivälinettä (15) puhdistusasennossa.Arrangement according to one of Claims 12 to 16, characterized in that the coarse elements (18) are arranged to exit the strainer (15) by gravity in the cleaning position, by shaking the strainer (15) in the cleaning position, by throwing the coarse elements (18) in the strainer (15). , and / or mechanically cleaning the strainer (15) in the cleaning position. 18. Jonkin patenttivaatimuksen 12 - 17 mukainen järjestely, tunnettu siitä, että siivilöintivälineet (15) on varustettu ohjausvälineillä (21) siivilöintivälineen (15) siirtämiseksi siivilöintiasennon ja puhdistu s asennon välissä.Arrangement according to one of Claims 12 to 17, characterized in that the strainer means (15) are provided with control means (21) for moving the strainer means (15) between the strainer position and the cleaned position. 19. Patenttivaatimuksen 18 mukainen järjestely, tunnettu siitä, 20 että siivilöintivälineet (15) on varustettu kontrollointivälineillä (22) ohjausvälineiden (21) kontrolloimiseksi.An arrangement according to claim 18, characterized in that the screening means (15) are provided with control means (22) for controlling the control means (21). 20. Jonkin patenttivaatimuksen 12 - 19 mukainen järjestely, tunnettu siitä, että siivilöintivälineillä (15) on aukkoja (13) pitkänomaisten yhdensuuntaisten aukkojen muodossa, 25 joiden leveys on 10 mm - 70 mm, edullisesti 30 mm - 60 mm, edullisimmin 40 - 50 mm.Arrangement according to one of Claims 12 to 19, characterized in that the screening means (15) have openings (13) in the form of elongated parallel openings 25 having a width of 10 mm to 70 mm, preferably 30 to 60 mm, most preferably 40 to 50 mm. . 21. Jonkin patenttivaatimuksen 12 - 20 mukainen järjestely, tunnettu siitä, että ^ siivilöintiväline (15) käsittää tankosiivilän, jossa on useita yhdensuuntaisia tankoja (14) siten, o ^ että aukkoja (13) yhdensuuntaisten pitkänomaisten aukkojen muodossa, joiden leveys on 10 mm o 30 - 70 mm, edullisesti 30 mm - 60 mm, edullisimmin 40 - 50 mm, on muodostettu kahden oj vierekkäisen yhdensuuntaisen tangon (14) välissä, x IX CLArrangement according to one of Claims 12 to 20, characterized in that the strainer (15) comprises a bar strainer having a plurality of parallel bars (14), such that the openings (13) are in the form of parallel elongated openings having a width of 10 mm. 30 to 70 mm, preferably 30 to 60 mm, most preferably 40 to 50 mm, are formed between two parallel bars (14) adjacent to each other, x IX CL 22. Jonkin patenttivaatimuksen 12 - 21 mukainen järjestely, tunnettu siitä, että !^: siivilöintiväline (15) on sovitettu siivilöimään pois karkeita elementtejä (18), joiden koko on m ^ 35 ainakin 60 mm, edullisesti ainakin 50 mm, edullisemmin ainakin 40 mm. δ c\jArrangement according to one of Claims 12 to 21, characterized in that the strainer (15) is arranged to strain off coarse elements (18) having a size of m-35 of at least 60 mm, preferably at least 50 mm, more preferably at least 40 mm. . δ c \ j
FI20125471A 2012-04-27 2012-04-27 PROCEDURES AND ARRANGEMENTS FOR SUPPLYING POWDER-SHEET SOLID MATERIAL TO A SLIG BURNER IN A SUSPENSION MIXTURE FI124492B (en)

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CN2012202202470U CN202647830U (en) 2012-04-27 2012-05-16 Equipment for supplying powdered solid matters to concentrate burner

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