Method for uniformly supplying reaction gas to a floating blast furnace and burner

Abstract

A method for equalizing the supply of reaction gas during the supply of solid material and reaction gas to a reaction shaft (1) of a floating blast furnace (2) by a burner (3) is shown. The method includes supplying solid material to the reaction shaft (1) by a supply pipe (4) of the burner (3) and supplying reaction gas to the reaction shaft (1) by a gas supply device (5) of the burner (3). The method includes providing a gas deflection member (12) in a reaction gas chamber (6) of the burner (3). Further shown is the burner (1).

Description

Field

[0001] The present invention relates to a method for homogenizing the supply of reaction gases when solid material and reaction gases are supplied to the reaction shaft of a floating blast furnace by means of burners, as defined in the preamble of independent claim 1. The present invention also provides the following independent claims: 8 1. A burner for supplying solid material and reaction gas to the reaction shaft of a floating blast furnace, as defined in the preceding paragraph.

[0002] WO 2009 / 030808 shows a concentrate burner that supplies a solid concentrate mixture and reaction gases to the reaction shaft of a flash smelting furnace.

[0003] The present invention aims to provide a method for uniformly supplying reactant gas when a burner is used to supply solid materials and reactant gas to the reaction shaft of a floating blast furnace, and to provide a burner with improved performance for uniformly supplying reactant gas when a burner is used to supply solid materials and reactant gas to the reaction shaft of a floating blast furnace.

[0004] The method according to the invention is characterized by what is defined in independent claim 1. Preferred embodiments of the invention are defined in the dependent claims 2 to 7 is defined as: The burner according to the invention is likewise characterized by the independent claims 8 It is characterized by the following definitions. Preferred embodiments of the burner are defined in the dependent claims 9 Or 14 is defined as: [Brief explanation of the drawings]

[0005] The present invention will now be described in detail with reference to the following drawings. [Figure 1] Shows a floating blast furnace. [Figure 2] 1 shows a partial perspective view of a first embodiment of a burner; [Figure 3] 1 shows a cross-sectional view of a second embodiment of a burner. [Figure 4] FIG. 10 shows a partial perspective view of a third embodiment of the burner. [Figure 5] 10 shows a cross-sectional view of a fourth embodiment of the burner. [Figure 6] FIG. 10 shows a partial perspective view of a fifth embodiment of the burner. [Figure 7] FIG. 10 shows a partial perspective view of a sixth embodiment of the burner. [Figure 8] FIG. 10 shows a partial perspective view of a seventh embodiment of the burner. [Figure 9] 10 illustrates variations of gas deflection members that can be used in some embodiments of the burner. [Figure 10] FIG. 13 shows a partial perspective view of an eighth embodiment of the burner. [Figure 11] FIG. 13 shows a partial perspective view of a ninth embodiment of the burner. [Figure 12] FIG. 16 shows a partial perspective view of a tenth embodiment of the burner. [Figure 13] FIG. 16 shows a partial perspective view of an eleventh embodiment of the burner. [Figure 14] FIG. 16 shows a partial perspective view of a twelfth embodiment of the burner. [Figure 15] FIG. 13 shows a partial perspective view of a thirteenth embodiment of the burner. Detailed Description of the Invention

[0006] First, a method for homogenizing the supply of reaction gas when solid material and reaction gas are supplied to the reaction shaft 1 of the floating blast furnace 2 by the burner 3, as well as some embodiments and variants of this method will be described in detail.

[0007] The reaction gas may be, for example, air, oxygen-enriched air and / or oxygen-containing.

[0008] The solid materials may include, for example, sulfide concentrates, fluxes, slag products, and / or electronic scrap.

[0009] The floating furnace 2 may be a flash furnace or a flash converter.

[0010] Burner 3 may be a concentrate burner or a matte burner.

[0011] The method includes feeding solid material to a reaction shaft 1 of a floating blast furnace 2 by a feed pipe 4 of a burner 3. The floating blast furnace 2 further comprises a settler (not numbered) configured to receive material from the reaction shaft 1, and a vent pipe (not numbered) for conducting process gas from the settler.

[0012] The method comprises the supply of reaction gas to the reaction shaft 1 of the floating blast furnace 2 by a gas supply device 5 of a burner 3, the gas supply device 5 comprising a reaction gas chamber 6 surrounding, preferably concentrically surrounding, the supply pipe 4. The gas supply device 5 opens into the reaction shaft 1 of the floating blast furnace 2 through an annular opening 7. The reaction gas chamber 6 is delimited outwardly at least in part by an inner wall 8 tapering, preferably conically tapering, towards the annular opening 7, and is delimited at least in part by a top structure 9.

[0013] The method comprises supplying a reactive gas to the reactive gas chamber 6 via a supply opening 11 of at least one intake channel 10 of a gas supply device 5 .

[0014] The method includes providing a gas deflection member 12 within the reaction gas chamber 6, the gas deflection member 12 defining at least one through opening 13 therethrough.

[0015] Preferably, but not necessarily, the gas deflection member 12 is fixedly mounted relative to the reaction gas chamber 6, for example so that it cannot rotate.

[0016] The method includes directing the reactant gas into the reaction gas chamber 6 from the supply opening 11 of the at least one intake passage 10 of the gas supply device 5 toward the inner wall 8 tapering toward the annular opening 7 and / or toward the gas deflection member 12. The method preferably, but not necessarily, includes directing the reactant gas into the reaction gas chamber 6 from the supply opening 11 of the at least one intake passage 10 of the gas supply device 5 toward the inner wall 8 tapering toward the annular opening 7 and / or toward the gas deflection member 12 between the top structure 9 and the gas deflection member 12, as in the embodiment shown in FIGS. 2 to 8 and 11 . In this application, "toward the gas deflection member 12" does not simply mean directing the reactant gas into one through-opening 13 penetrating the gas deflection member 12, but rather means directing at least a portion of the reactant gas into the material forming the gas deflection member 12 to at least partially prevent the reactant gas from directly flowing out of the reaction gas chamber 6 from the annular opening 7. The purpose of the gas deflection element 12 is to change the direction of the reaction gas and make the flow of the reaction gas uniform in the reaction gas chamber 6, thereby more uniformly distributing the flow of the reaction gas from the annular opening 7 into the reaction shaft 1 of the floating blast furnace 2, thereby promoting the reaction between the reaction gas and the solid materials in the reaction shaft 1 of the floating blast furnace 2 and improving the recovery of metals from the solid materials fed into the reaction shaft 1 of the floating blast furnace 2 by the burner 3. Furthermore, the gas deflection element 12 can uniformly adjust the difference in the flow velocity of the reaction gas that may occur when the reaction gas flows from different parts of the annular opening 7.

[0017] In some embodiments and variations of the method, such as those shown in Figures 2-7 and 11, the method may involve disposing at least one inlet passage 10 of the gas supply device 5 to penetrate into the reaction gas chamber 6, such that the at least one inlet passage 10 has a passage portion 14 within the reaction gas chamber 6 and such that the supply opening 11 of the at least one inlet passage 10 is located within the reaction gas chamber 6. Such embodiments and variations of the method preferably, but not necessarily, include disposing the at least one inlet passage 10 of the gas supply device 5 to penetrate through the top structure 9 of the reaction gas chamber 6, as shown in Figures 2-7 and 11. Such embodiments and variations of the method preferably, but not necessarily, include bending and / or tilting the flow path section 14 away from the central axis A of the burner 3, and directing the reaction gas from the supply opening 11 to the tapered inner wall section 8 towards the annular opening 7 between the top structure 9 and the gas deflection member 12, as shown in Figures 2 to 7 and 11, to ensure a uniform distribution of the reaction gas within the reaction gas chamber 6 and to equalize any possible flow velocity differences of the reaction gas leaving the reaction gas chamber 6 through the annular opening 7 before entering the reaction shaft 1 of the floating blast furnace.

[0018] In some embodiments and variations of the method, as shown in Figures 2 to 7 and 11, the method includes: arranging a plurality of intake passages 10 of the gas supply device 5 through the top structure 9 in a symmetrical arrangement with respect to the central axis A of the burner 3; each of the plurality of intake passages 10 having a passage section 14 in the reaction gas chamber 6, and each passage section 14 being bent and / or tilted away from the central axis A of the burner 3 to guide the reaction gas from the supply openings 11 to the inner wall section 8 tapering toward the annular opening 7 between the top structure 9 and the gas deflector 12; and arranging the supply openings 11 of the intake passages 10 in a symmetrical arrangement with respect to the central axis A of the burner 3 to uniformly distribute the reaction gas in the reaction gas chamber 6 and equalize any difference in flow velocity of the reaction gas before the reaction gas leaves the reaction gas chamber 6 through the annular opening 7 and enters the reaction shaft 1 of the floating blast furnace 2.

[0019] The supply opening 11 of the at least one intake air passage 10 can also be arranged in the top structure 9, as shown in FIGS.

[0020] Furthermore, the supply opening 11 of the at least one intake passage 10 can also be disposed in the inner wall portion 8 that partially defines the reaction gas chamber 6, as shown in FIGS.

[0021] In some embodiments and variations of the method, the installed gas deflection member 12 comprises an enclosing structure 15 surrounding the supply pipe 4, as shown in Figures 2 to 15.

[0022] Where the method includes providing a gas deflection member 12 with an enclosing structure 15, the enclosing structure 15 for the gas deflection member 12 may be in the form of a tubular member having a plurality of through openings 13 formed through the wall of the gas deflection member 12, as shown in Figure 12. Preferably, but not exclusively, the tubular member is sized and shaped to allow the annular opening 7 to be visible from the top structure 9, so that, for example, a camera mountable on the top structure 9 can be used to monitor the smelting process in the reaction shaft 1 of the floating furnace through the annular opening 7.

[0023] When the method involves installing a gas deflection member 12 with an enclosing structure 15, preferably, but not necessarily, the method includes installing the enclosing structure 15 gas deflection member 12 on an inner wall portion 8 that tapers toward the annular opening 7, as in the embodiments shown in Figures 2 to 8, 10, 11, and 13 to 15.

[0024] When the installed gas deflection member 12 includes an enclosure 15 surrounding the supply pipe 4, the enclosure 15 for the gas deflection member 12 may, in some embodiments and variations of the method, include an annular disk 21 including an inner periphery 19 and an outer periphery 20, as shown in Figures 2-8, 10, 11, and 13-15. Such embodiments and variations of the method preferably, but not necessarily, include attaching the outer periphery 20 of the annular disk to an inner wall 8 that tapers toward the annular opening 7, as shown in Figures 2-8, 10, 11, and 13-15. The annular disk 21 of the enclosure 15 for the installed gas deflection member 12 may include at least one disk discontinuity 26, which defines a through opening 13 extending through the gas deflection member 12. The annular disk 21 of the enclosure 15 of the installed gas deflection member 12 may be formed of a plurality of arcuate portions 24 spaced apart in the circumferential direction of the enclosure 15, such that the through openings 13 through the gas deflection member 12 are formed between two arcuate portions 24 spaced apart in the circumferential direction of the enclosure 15, as in the ninth embodiment shown in Figure 11. Preferably, but not necessarily, such arcuate portions 24 are symmetrically arranged to provide at least partial symmetry in the flow of reactant gas from the annular openings 7. Preferably, but not necessarily, the annular disk 21 is substantially flat and planar in shape.

[0025] Where the installed gas deflection member 12 has an enclosing structure 15 with an annular disk 21, preferably, but not necessarily, as in the embodiments shown in Figures 2-6, 11, and 13-15, the gas deflection member 12 has one through opening 13 formed in the shape of a central through opening defined by the inner periphery 19 of the annular disk 21 of the enclosing structure 15 of the installed gas deflection member 12. The central through opening is preferably, but not necessarily, sized and shaped to allow the annular opening 7 to be visible from the top structure 9, so that, for example, a camera mountable on the top structure 9 can be used to monitor the smelting process in the reaction shaft 1 of the floating furnace through the annular opening 7.

[0026] When the installed gas deflection element 12 has an enclosing structure 15 with an annular disk 21, the method preferably, but not necessarily, includes providing the enclosing structure 15 of the gas deflection element 12 with an annular disk 21 with a peripheral member 16, as shown in FIGS. 4-7. The peripheral member 16 serves to deflect the flow of reaction gas within the reaction gas chamber 6, uniformly distributing the reaction gas within the reaction gas chamber 6, and equalizing any differences in reaction gas flow velocity that may occur before the reaction gas exits the reaction gas chamber 6, passes through the annular opening 7, and enters the reaction shaft 1 of the floating blast furnace 2. The method may also include providing the peripheral member 16 to have at least one peripheral discontinuity 17, as shown in FIG. 4. The method may also include providing the peripheral member 16 to have a plurality of peripheral portions 18 spaced apart from one another in the circumferential direction of the annular disk 21, as shown in FIG. 4. Preferably, but not necessarily, such a circumferential portion 18 is provided symmetrically as shown in FIG. 4, so that the flow of reaction gas from the annular opening 7 is at least partially symmetrical, equalizing any difference in flow velocity of the reaction gas that may occur after the reaction gas leaves the reaction gas chamber 6 before passing through the annular opening 7, and promoting the reaction between the reaction gas and the solid material in the reaction shaft 1 of the floating blast furnace 2, thereby allowing more metal to be recovered from the solid material fed into the reaction shaft 1 of the floating blast furnace 2 by the burner 3.

[0027] The method may include providing a peripheral member 16 on an inner periphery 19 of an annular disk 21, as shown in FIGS.

[0028] When the installed gas deflection element 12 has an enclosure 15 with an annular disk 21, preferably, but not necessarily, as shown in FIG. 4, the method includes providing a burner 3 with two intake air passages 10, each with one supply opening 11, the supply openings 11 being radially disposed relative to the supply pipe 4 and providing a peripheral element 16 with two radially extending peripheral portions 18 on the annular disk 21, one peripheral portion 18 being axially below one of the intake air passages 10 and the other peripheral portion 18 being axially below the other of the intake air passages 10, so that the reaction gas supplied from one of the supply openings 11 of the intake air passages 10 is redirected by one peripheral portion 18 in the reaction gas chamber 6, thereby promoting the distribution of the reaction gas in the reaction gas chamber 6 and equalizing any difference in flow velocity of the reaction gas before the reaction gas leaves the reaction gas chamber 6 and passes through the annular opening 7 to enter the reaction shaft 1 of the floating blast furnace 2.

[0029] When the installed gas deflection member 12 has an enclosing structure 15 with an annular plate 21, the method may include attaching the inner periphery 19 of the annular plate 21 to a supply pipe 4 to supply solid material to the reaction shaft 1 of the floating blast furnace 2, and providing the annular plate 21 of the gas deflection member 12 with a plurality of through openings 13 penetrating the annular plate 21, as shown in FIG.

[0030] When the installed gas deflection member 12 has a surrounding structure 15 having an annular disk 21, the method may include providing the annular disk 21 of the gas deflection member 12 with a plurality of through openings 13 that pass through the annular disk 21, as shown in Figure 10.

[0031] As shown in FIGS. 13-15, the burner 3 may include a gas deflection element 25 in the reaction gas chamber 6 in addition to the gas deflection element 12, and the gas deflection element 12 may be spaced apart from the gas deflection element 25. The purpose of the gas deflection element 25 is to further uniformly distribute the reaction gas in the reaction gas chamber 6 before the reaction gas exits the reaction gas chamber 6 and passes through the annular opening 7 into the reaction shaft 1 of the floating blast furnace 2. In FIG. 13, the gas deflection element 25 is provided in the form of a tubular member having a plurality of through openings 13 extending therethrough and surrounding the supply pipe 4. In FIG. 14, the gas deflection element 25 is provided in the form of a tubular member and surrounding the supply pipe 4. In FIG. 15, the gas deflection element 25 is provided in the form of an annular disk and surrounding the supply pipe 4, and the element 25 is fixed to the supply pipe 4.

[0032] The method preferably, but not necessarily, includes a distributor 22 provided on the burner 3. The distributor 22 is concentrically disposed within the supply pipe 4 and extends outward from the opening 23 of the supply pipe 4 to direct the dispersion gas toward the solid material supplied from the opening 23 of the supply pipe 4, thereby deflecting the solid material toward the reaction gas supplied from the annular opening 7.

[0033] The burner 3 that supplies the solid material and reaction gases to the reaction shaft 1 of the floating blast furnace 2 and some embodiments and variants of the burner 3 will now be described in detail.

[0034] The reaction gas may be, for example, air, oxygen-enriched air, and / or oxygen-containing.

[0035] The solid materials may include, for example, sulfide concentrates, fluxes, slag products, and / or electronic scrap.

[0036] The floating blast furnace 2 may be a flash smelting furnace or a flash converter. The floating blast furnace 2 further comprises a settler (not numbered) configured to receive material from the reaction shaft 1, and a vent pipe (not numbered) for conducting process gases from the settler.

[0037] Burner 3 may be a concentrate burner or a matte burner.

[0038] The burner 3 is equipped with a feed pipe 4 which feeds solid material into the reaction shaft 1 of the floating blast furnace 2 .

[0039] The burner 3 is equipped with a gas supply device 5 which supplies reaction gases to the reaction shaft 1 of the floating blast furnace 2 .

[0040] The gas supply device 5 comprises a reaction gas chamber 6 surrounding the supply pipe 4, preferably concentrically surrounding it.

[0041] The gas supply device 5 opens into the reaction shaft 1 of the floating blast furnace 2 through an annular opening 7 .

[0042] The reaction gas chamber 6 is at least partially defined outwardly by an inner wall 8 that tapers, preferably conically, towards an annular opening 7, and is at least partially defined by a top structure 9.

[0043] The gas supply device 5 has at least one intake passage 10 that opens into the reaction gas chamber 6, and supplies the reaction gas to the reaction gas chamber 6 through the supply opening 11 of the at least one intake passage 10.

[0044] The burner 3 comprises a gas deflection member 12 in the reaction gas chamber 6. The gas deflection member 12 defines at least one through opening 13 therethrough.

[0045] The gas deflection member 12 is preferably, but not necessarily, fixedly installed relative to the reaction gas chamber 6 so that it cannot rotate, for example.

[0046] The supply openings 11 of the at least one intake passage 10 are configured to direct the reactant gas toward the tapered inner wall 8 toward the annular opening 7 and / or toward the gas deflection member 12. Preferably, but not necessarily, as in the embodiments shown in FIGS. 2 to 8 and 11 , the supply openings 11 of the at least one intake passage 10 are configured between the top structure 9 and the gas deflection member 12 to direct the reactant gas toward the tapered inner wall 8 toward the annular opening 7 and / or toward the gas deflection member 12. In this application, "toward the gas deflection member 12" does not simply mean directing the reactant gas toward one through-opening 13 through the gas deflection member 12, but rather means directing at least a portion of the reactant gas toward the material forming the gas deflection member 12 to at least partially prevent the reactant gas from directly flowing out of the annular opening 7 to the reaction gas chamber 6. The purpose of the gas deflection member 12 is to change the direction of the reaction gas and make the flow of the reaction gas in the reaction gas chamber 6 uniform, thereby further uniforming the flow of the reaction gas from the annular opening 7 to the reaction shaft 1 of the floating blast furnace 2, thereby promoting the reaction between the reaction gas and the solid materials in the reaction shaft 1 of the floating blast furnace 2 and recovering more metal from the solid materials fed into the reaction shaft 1 of the floating blast furnace 2. The gas deflection member 12 also uniforms the difference in flow velocity of the reaction gas that may occur when the reaction gas flows from different positions in the annular opening 7.

[0047] In some embodiments and variations of the burner 3 shown in Figures 2 to 7 and 11, the at least one intake passage 10 is disposed so as to penetrate the reaction gas chamber 6, whereby the at least one intake passage 10 has a flow passage portion 14 within the reaction gas chamber 6, and the supply opening 11 of the at least one intake passage 10 is disposed within the reaction gas chamber 6. As shown in Figures 2 to 7 and 11, preferably, but not necessarily, the at least one intake passage 10 penetrates the top structure 9 of the reaction gas chamber 6. The flow passage portion 14 is preferably, but not necessarily, bent and / or tilted to be away from the central axis A of the burner 3, and directs the reaction gas from the supply opening 11 between the top structure 9 and the gas deflector 12 to the inner wall portion 8 that tapers toward the tip of the annular opening 7, as shown in Figures 2 to 7 and 11.

[0048] In some variations and embodiments of the burner 3, as shown in Figures 2 to 7 and 11, the burner 3 may have multiple intake passages 10 penetrating the top structure 9 and arranged symmetrically about the central axis A of the burner 3, each of the multiple intake passages 10 having a passage section 14 within the reaction gas chamber 6, each passage section 14 being curved and / or angled away from the central axis A of the burner 3 to direct the reaction gas from the supply openings 11 to the inner wall section 8 between the top structure 9 and the gas deflector 12, which tapers towards the annular opening 7, and the supply openings 11 of the intake passages 10 are arranged symmetrically about the central axis A of the burner 3.

[0049] The supply opening 11 of the at least one intake passage 10 can also be disposed in the top structure 9, as shown in FIGS.

[0050] Furthermore, the supply opening 11 of the at least one intake passage 10 can also be disposed in the inner wall portion 8 that partially defines the reaction gas chamber 6, as shown in FIGS.

[0051] The gas deflection member 12 preferably, but not necessarily, comprises an enclosing structure 15 surrounding the supply pipe 4, as shown in Figures 2 to 15.

[0052] In the case where the gas deflection member 12 comprises an enclosing structure 15, the enclosing structure 15 of the gas deflection member 12 comprises a tubular member having a shape including a plurality of through openings 13 passing through the wall of the gas deflection member 12, as shown in Figure 12. The tubular member is preferably, but not necessarily, sized and shaped to allow the annular opening 7 to be visible from the top structure 9, so that, for example, a camera mountable on the top structure 9 can be used to monitor the smelting process in the reaction shaft 1 of the floating furnace through the annular opening 7.

[0053] When the gas deflection member 12 includes a surrounding structure 15, the surrounding structure 15 of the gas deflection member 12 may be provided on an inner wall portion 8 that tapers toward the annular opening 7, as shown in Figures 2 to 8, 10, 11 and 13 to 15.

[0054] The enclosure 15 may include an annular disk 21 including an inner periphery 19 and an outer periphery 20, as shown in FIGS. 2-8, 10, 11, and 13-15. The outer periphery 20 of the annular disk 21 may be attached to the inner wall 8, which tapers toward the annular opening 7, as shown in FIGS. 2-8, 10, 11, and 13-15. The annular disk 21 may have at least one discontinuity 26. The annular disk 21 may be comprised of a plurality of arcuate portions 24 spaced apart from one another circumferentially around the first annular member. Preferably, but not necessarily, the plurality of arcuate portions 24 are symmetrically positioned to at least partially symmetrize the flow of reactant gas from the annular opening 7. The annular disk 21 preferably, but not necessarily, has a substantially flat, planar shape.

[0055] Where the gas deflection member 12 comprises an enclosing structure 15 surrounding the supply pipe 4, the enclosing structure 15 comprising an annular disk 21 having an inner periphery 19 and an outer periphery 20, the gas deflection member 12 may comprise a single through opening 13 formed by a central through opening defined by the inner periphery 19 of the annular disk 21 of the enclosing structure, as shown in Figures 2-6, 11 and 13-15. The central through opening is preferably, but not necessarily, sized and shaped to allow the annular opening 7 to be visible from the top structure 9, thereby enabling, for example, a camera mountable on the top structure 9 to be used to monitor the smelting process in the reaction shaft 1 of the floating furnace through the annular opening 7.

[0056] When the gas deflection member 12 includes a surrounding structure 15 surrounding the supply pipe 4 and the surrounding structure 15 includes an annular disk 21 including an inner peripheral portion 19 and an outer peripheral portion 20, a peripheral member 16 may be provided on the annular disk 21, as shown in FIGS. 4 to 7. The peripheral member 16 deflects the flow of the reaction gas in the reaction gas chamber 6 to uniformly distribute the reaction gas therein and to uniformly eliminate any difference in the flow velocity of the reaction gas before the reaction gas leaves the reaction gas chamber 6 and passes through the annular opening 7 to enter the reaction shaft 1 of the floating blast furnace 2. As shown in FIG. 4, the peripheral member 16 has at least one peripheral discontinuity 17. As shown in FIG. 4, the peripheral member 16 may include a plurality of peripheral portions 18 spaced apart from one another in the circumferential direction of the annular disk 21. Preferably, but not necessarily, such periphery 18 is symmetrical to provide at least partial symmetry in the flow of reactant gas from annular opening 7 .

[0057] The peripheral member 16 is not necessarily required, but is preferably provided on the inner peripheral portion 19 of the annular disk 21 as shown in FIGS.

[0058] When the gas deflection member 12 has a surrounding structure 15 surrounding the supply pipe 4, and the surrounding structure 15 has an annular plate 21 including an inner peripheral portion 19 and an outer peripheral portion 20, the burner 3 may have two intake passages 10 as shown in Figure 4, each having one supply opening 11, and the supply openings 11 are arranged radially relative to the supply pipe 4, sandwiching the supply pipe 4, and the peripheral member 16 may have two peripheral portions 18 arranged radially on the annular plate 21, one peripheral portion 18 being arranged axially below one intake passage 10 and the other peripheral portion 18 being arranged axially below the other intake passage 10.

[0059] When the gas deflection member 12 comprises an enclosing structure 15 surrounding the supply pipe 4, and the enclosing structure 15 comprises an annular plate 21 including an inner periphery 19 and an outer periphery 20, the outer periphery 20 of the annular plate 21 may be attached to the inner wall 8 tapering to the annular opening 7, as shown in FIG. 8, and the inner periphery 19 of the annular plate 21 may be attached to the supply pipe 4 to supply solid material to the reaction shaft 1 of the floating blast furnace 2, and the annular plate may have a plurality of through openings 13.

[0060] When the gas deflection member 12 includes a surrounding structure 15 surrounding the supply pipe 4, and the surrounding structure 15 includes an annular disk 21 including an inner circumferential portion 19 and an outer circumferential portion 20, the outer circumferential portion 20 of the annular disk 21 may be attached to an inner wall portion 8 tapering toward the annular opening 7, as shown in FIG. 10, and the annular disk 21 may be provided with a plurality of through openings 13.

[0061] In addition to the gas deflection element 12, the burner 3 may also include a gas deflection element 25 in the reaction gas chamber 6. As shown in FIGS. 13-15, the gas deflection element 12 is spaced apart from the gas deflection element 25. The purpose of the gas deflection element 25 is to further homogenize the distribution of the reaction gas in the reaction gas chamber 6 before it exits the reaction gas chamber 6 and passes through the annular opening 7. In FIG. 13, the gas deflection element 25 is in the form of a tubular member with a plurality of through-holes 13 extending therethrough and surrounding the supply pipe 4. In FIG. 14, the gas deflection element 25 is in the form of a tubular member and surrounding the supply pipe 4. In FIG. 15, the gas deflection element 25 is in the form of an annular disk and surrounding and fixed to the supply pipe 4.

[0062] The burner 3 may be equipped with a dispersion device that is concentrically disposed within the supply pipe 4 and extends outward from the nozzle 23 of the supply pipe 4 to direct the dispersion gas toward the solid material supplied from the nozzle 23 of the supply pipe 4.

[0063] It is obvious to those skilled in the art that with the advancement of technology, the basic idea of ​​the present invention can be implemented in various ways, therefore the present invention and its embodiments are not limited to the examples described above, but may vary within the scope of the claims.

Claims

1. A method for uniformly supplying a reaction gas when supplying a solid material and a reaction gas to a reaction shaft of a floating blast furnace by a burner, comprising: A solid material is supplied to the reaction shaft of the floating blast furnace by a supply pipe of the burner; A gas supply device of the burner supplies reaction gas to the reaction shaft of the floating blast furnace, the gas supply device has a reaction gas chamber surrounding the supply pipe, the gas supply device opens into the reaction shaft of the floating blast furnace through an annular opening, the reaction gas chamber is at least partially bounded outward by an inner wall portion tapering towards the annular opening, and is bounded by a top structure; 1. A method comprising: supplying a reactant gas to the reactant gas chamber through a supply opening of at least one inlet passage of the gas supply apparatus; providing a gas deflection member within the reaction gas chamber, the gas deflection member defining at least one through opening therethrough; directing a reactant gas from a supply opening of at least one intake passage of the gas supply device toward the inner wall portion tapering toward the annular opening and / or toward the gas deflection member; The method comprises arranging at least one intake passage of the gas supply device to penetrate into the reaction gas chamber, so that the at least one intake passage has a flow passage portion within the reaction gas chamber and so that a supply opening of the at least one intake passage is located within the reaction gas chamber.

2. 10. The method of claim 1, The method further comprises disposing at least one inlet passage of the gas supply through a top structure of the reaction gas chamber.

3. 3. The method according to claim 1 or 2, the flow passage is bent and / or angled away from the central axis of the burner, and between the top structure and the gas deflector, the reactant gas is directed from the supply opening to the inner wall portion tapering toward the annular opening.

4. 10. The method of claim 1, a plurality of intake passages of the gas supply device are disposed symmetrically with respect to a central axis of the burner so as to penetrate the top structure, and each of the plurality of intake passages has a passage portion within the reaction gas chamber; each flow passage portion is bent and / or angled away from the central axis of the burner to direct reactant gas between the top structure and the gas deflector member from the supply opening to the inner wall portion tapering toward the annular opening; The method of claim 1, further comprising locating the supply openings of the intake passages in a symmetrical arrangement about a central axis of the burner.

5. 5. The method according to claim 1, wherein The method of claim 1, wherein the provided gas deflection member comprises an enclosure structure disposed to surround the supply pipe.

6. 6. The method of claim 5, providing a surrounding structure for the gas deflection member on the inner wall that tapers toward the annular opening.

7. 7. The method of claim 6, The method of claim 1, wherein the surrounding structure of the installed gas deflection member comprises an annular disk having an inner periphery and an outer periphery.

8. a burner for supplying solid material and reaction gas to the reaction shaft of the floating blast furnace; a feed pipe for supplying solid material to the reaction shaft of the floating blast furnace; a gas supply device for supplying reaction gas to the reaction shaft of the floating blast furnace, the gas supply device having a reaction gas chamber surrounding the supply pipe, the gas supply device opening into the reaction shaft of the floating blast furnace through an annular opening, the reaction gas chamber being at least partially bounded outward by an inner wall tapering towards the annular opening and also bounded by a top structure, the gas supply device having at least one intake passage opening into the reaction gas chamber, and supplying reaction gas to the reaction gas chamber through a supply opening of the at least one intake passage, a gas deflection member within the reaction gas chamber defining at least one through opening therethrough; and a supply opening of the at least one intake passage configured to direct reactant gas toward the inner wall portion tapering toward the annular opening and / or toward the gas deflection member; A burner characterized in that the at least one intake passage penetrates the reaction gas chamber, so that the at least one intake passage has a passage portion within the reaction gas chamber, and a supply opening of the at least one intake passage is arranged within the reaction gas chamber.

9. 9. The burner of claim 8, The at least one air intake passage extends through a top structure of the reaction gas chamber.

10. 10. The burner according to claim 8 or 9, The flow passage is curved and / or angled away from the central axis of the burner, and between the top structure and the gas deflection member, directs reactant gas from the supply opening to the inner wall portion tapering toward the annular opening.

11. 9. The burner of claim 8, a plurality of intake passages extend through the top structure in a symmetrical arrangement with respect to a central axis of the burner, whereby each of the plurality of intake passages has a passage portion within the reaction gas chamber; the flow passages are each bent and / or inclined away from the central axis of the burner, and between the top structure and the gas deflector, direct the reactant gas from the supply opening to the inner wall portion tapering toward the annular opening; A burner characterized in that the supply openings of the intake passages are arranged symmetrically with respect to a central axis of the burner.

12. 12. A burner according to any one of claims 8 to 11, The burner according to claim 1, wherein the gas deflection member includes an enclosing structure that encloses the supply pipe.

13. 13. The burner according to claim 12, 10. A burner according to claim 9, wherein the gas deflection member has an enclosure on the inner wall portion that tapers toward the annular opening.

14. 14. The burner according to claim 13, The burner, wherein the surrounding structure comprises an annular disk having an inner periphery and an outer periphery.

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