CN216838046U - Oxygen-enriched side-blown converter for recovering iron from metal waste through enhanced reduction - Google Patents
Oxygen-enriched side-blown converter for recovering iron from metal waste through enhanced reduction Download PDFInfo
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- CN216838046U CN216838046U CN202122734617.4U CN202122734617U CN216838046U CN 216838046 U CN216838046 U CN 216838046U CN 202122734617 U CN202122734617 U CN 202122734617U CN 216838046 U CN216838046 U CN 216838046U
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- 230000009467 reduction Effects 0.000 title claims abstract description 94
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 34
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 24
- 239000001301 oxygen Substances 0.000 title claims abstract description 24
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 17
- 239000010814 metallic waste Substances 0.000 title claims abstract description 7
- 230000003647 oxidation Effects 0.000 claims abstract description 76
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 76
- 238000005485 electric heating Methods 0.000 claims abstract description 39
- PTVDYARBVCBHSL-UHFFFAOYSA-N copper;hydrate Chemical compound O.[Cu] PTVDYARBVCBHSL-UHFFFAOYSA-N 0.000 claims abstract description 20
- 238000011084 recovery Methods 0.000 claims abstract description 8
- 239000002893 slag Substances 0.000 claims description 29
- 229910000805 Pig iron Inorganic materials 0.000 claims description 8
- 239000003923 scrap metal Substances 0.000 claims 2
- 238000004062 sedimentation Methods 0.000 claims 1
- 229910052751 metal Inorganic materials 0.000 abstract description 20
- 239000002184 metal Substances 0.000 abstract description 20
- 239000000463 material Substances 0.000 abstract description 15
- 239000000155 melt Substances 0.000 abstract description 12
- 238000003723 Smelting Methods 0.000 abstract description 7
- 239000002994 raw material Substances 0.000 abstract description 7
- 238000000354 decomposition reaction Methods 0.000 abstract description 4
- 230000008018 melting Effects 0.000 abstract description 4
- 238000002844 melting Methods 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 abstract description 2
- 229910052802 copper Inorganic materials 0.000 abstract description 2
- 239000010949 copper Substances 0.000 abstract description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 239000003245 coal Substances 0.000 description 8
- 230000009471 action Effects 0.000 description 7
- 238000003756 stirring Methods 0.000 description 6
- 229910052757 nitrogen Inorganic materials 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 229960004424 carbon dioxide Drugs 0.000 description 4
- 229910002091 carbon monoxide Inorganic materials 0.000 description 4
- 229910002090 carbon oxide Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910044991 metal oxide Inorganic materials 0.000 description 4
- 150000004706 metal oxides Chemical class 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000007664 blowing Methods 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000005188 flotation Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000012768 molten material Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 241000416536 Euproctis pseudoconspersa Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 238000009854 hydrometallurgy Methods 0.000 description 1
- 239000010970 precious metal Substances 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- 239000002982 water resistant material Substances 0.000 description 1
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Abstract
The utility model discloses an oxygen-enriched side-blown converter for recovering iron from metal waste through enhanced reduction, and belongs to the technical field of molten pool smelting furnaces. The furnace comprises a furnace body, wherein the interior of the furnace body is divided into an oxidation section and a reduction section which are horizontally parallel by a copper water jacket, and an electric heating front bed is arranged at the bottom of the furnace body; the bottom of the oxidation section is higher than that of the reduction section, and a step-shaped molten pool is formed at the bottom of the furnace body; a through overflow hole is formed in the copper water jacket between the oxidation section and the reduction section; the bottom of the reduction section is communicated with the electric heating forebed through an outflow port. Forming an oxidation section and a reduction section which are horizontally parallel by sleeving molten copper in the furnace body, wherein the oxidation atmosphere and the reduction atmosphere exist in the same furnace; in the oxidation section, the decomposition and melting of the raw materials and auxiliary materials are completed; strong reducing atmosphere can be created in the reduction section, and the reduction recovery of iron in the iron waste can be further enhanced; the electric heating fore bed can maintain the temperature of the melt, and effectively solves the problem that the bottom metal is dead due to furnace accretion.
Description
Technical Field
The utility model relates to an oxygen-enriched side-blown converter for recovering iron from metal waste through enhanced reduction, and belongs to the technical field of molten pool smelting furnaces.
Background
An oxygen-enriched side-blown molten pool smelting furnace, called an oxygen-enriched side-blown furnace for short, mainly comprises a furnace hearth, a furnace body, a furnace top, a steel frame and the like. The furnace hearth is built by water-resistant materials, a furnace body is arranged above the furnace hearth, the interior of the furnace hearth is used as a molten pool, the furnace body is generally composed of a copper water jacket, and a steel frame is used for providing a supporting function. A layer of copper water jacket on the side surface of the furnace body is provided with a plurality of primary air ports for blowing oxygen-enriched air into the melt slag layer; a plurality of secondary air ports are arranged on the second layer of copper water jacket on the side surface of the furnace body and used for blowing a certain amount of air into the furnace so as to fully combust combustible components in the smoke; the water jackets above the three layers of copper water jackets and the furnace top are generally composed of steel water jackets, and the steel water jackets on the furnace top are not provided with a charging hole.
The raw materials and the fuel are uniformly mixed in proportion and are added from a charging hole at the top of the furnace through a conveying device, the materials entering the furnace fall into a molten pool after high temperature, a primary air port arranged on the side surface of a furnace body introduces oxygen-enriched compressed air into a melt slag layer, the melt of the materials violently rolls in the furnace under the stirring action of the oxygen-enriched compressed air, the smelting and oxidation slagging processes can be rapidly completed, and the generated slag and the melt are siphoned and discharged through a slag discharging hole.
The prior oxygen-enriched side-blown converter has the following defects: (1) the oxygen-enriched side-blown converter cannot form an oxidizing atmosphere and a reducing atmosphere in the converter at the same time, and can only form the oxidizing atmosphere and the reducing atmosphere in a plurality of times, so that the production efficiency is reduced, and the reducing environment is a weak reducing atmosphere and cannot form a strong reducing atmosphere; (2) the problem of furnace death caused by furnace accretion of the bottom metal is serious.
Therefore, the oxygen-enriched side-blown converter for the reinforced reduction recovery of the iron waste is designed, the oxygen-enriched side-blown converter can simultaneously have oxidation and reduction atmospheres, the production efficiency is improved, and metal at the bottom of a furnace pool is not easy to form a converter.
Disclosure of Invention
The technical problem to be solved by the utility model is as follows: the utility model provides an oxygen-enriched side-blown converter for the iron scrap is reinforceed to reduce and is retrieved, it has solved the current oxygen-enriched side-blown converter and has had the metal recovery production efficiency low, the problem of easy knot stove.
The technical problem to be solved by the utility model is realized by adopting the following technical scheme:
an oxygen-enriched side-blown converter for recovering iron from metal waste by forced reduction comprises a converter body, wherein the inside of the converter body is divided into an oxidation section and a reduction section which are horizontally arranged in parallel through a copper water jacket, and the bottom of the converter body is provided with an electric heating front bed;
the top of the oxidation section is provided with an oxidation section charging hole, and the top of the reduction section is provided with a reduction section charging hole;
The bottom of the oxidation section is higher than the bottom of the reduction section, and a step-shaped molten pool is formed at the bottom of the furnace body;
a through overflow hole is formed in the copper water jacket between the oxidation section and the reduction section;
a plurality of oxidation section primary air ports are formed in the side face of the oxidation section, and a plurality of reduction section primary air ports are formed in the side face of the reduction section, wherein the oxidation section primary air ports and the reduction section primary air ports are lower than the overflow holes;
the bottom of the reduction section is communicated with an electric heating forehearth through an outflow port, the electric heating forehearth is a standing and settling section, a pig iron discharge port is arranged at the bottom of the electric heating forehearth, a slag discharge port is arranged at the end part of the electric heating forehearth, and the height of the slag discharge port is lower than that of an overflow hole.
As a preferable example, the side surface of the oxidation section is provided with an oxidation section secondary tuyere which is higher than the overflow hole.
As a preferable example, the side walls of the oxidation section and the reduction section are both formed by copper water jackets.
An oxidation section and a reduction section which are horizontally arranged in parallel are arranged in the furnace body, the bottom of the oxidation section is higher than the bottom of the reduction section, a step-shaped molten pool is formed at the bottom of the furnace body, an electric heating front bed is arranged at the bottom of the furnace body, and materials enter the electric heating front bed from the oxidation section and the reduction section in sequence.
And in the oxidation section, oxygen-enriched air is blown into the oxidation section molten pool from a primary air port of the oxidation section, the oxygen-enriched air wraps the added furnace burden to play a role of stirring, so that the melt is bubbled and expanded, a smelting reaction is carried out in the air port area of the oxidation section molten pool, the decomposition and melting of raw material and auxiliary materials are completed, and the material in a molten state overflows from the oxidation section molten pool of the previous stage through an overflow hole in the copper water jacket and enters the reduction section molten pool of the next stage.
And in the reduction section, nitrogen carries pulverized coal and is blown into a reduction section molten pool from a primary tuyere of the reduction section, the charged molten material and the reduction coal are wrapped to play a role in stirring and reducing, the metal oxide is further reduced into metal under the action of carbon and carbon monoxide under the action of high temperature, and the metal phase and the slag phase are mixed together and flow into an electric heating front bed through a reduction section outflow port.
The electric heating forehearth is heated by an electrode arranged in the electric heating forehearth, the temperature of a melt in a furnace body of the electric heating forehearth is maintained, so that a metal phase and a slag phase have time to stand and separate, produced pig iron is discharged from a pig iron discharge port at the bottom of the furnace, and slag is siphoned and discharged from a slag discharge port; the electric heating forehearth is also provided with a safety opening, when the furnace is shut down, all furnace slag in the furnace can be discharged from the furnace slag discharge opening, and all melt is discharged from the safety opening.
The beneficial effects of the utility model are:
(1) forming an oxidation section and a reduction section which are horizontally parallel by sleeving molten copper in the furnace body, wherein the oxidation atmosphere and the reduction atmosphere exist in the same furnace, and a feed inlet is divided into an oxidation section feed inlet and a reduction section feed inlet, so that the oxidation section and the reduction section are divided from the feed inlet;
(2) Bubbling and expanding the melt in the oxidation section, and carrying out smelting reaction in a tuyere area of a molten pool to finish the decomposition and melting of raw materials and auxiliary materials;
(3) in the reduction section, nitrogen is used as coal-carrying air to convey the pulverized coal, so that a strong reducing atmosphere is created, a stirring reduction effect is achieved, the metal oxide is further reduced into metal under the action of carbon and carbon monoxide under the high-temperature effect, and the reduction recovery of iron in the iron waste can be further enhanced;
(4) the electric heating forehearth can maintain the temperature of the melt, so that the metal phase and the slag phase have time to stand and separate, and the electric heating forehearth can supplement heating, thereby effectively solving the problem that the bottom metal causes furnace death due to furnace formation.
Drawings
FIG. 1 is a schematic side view of the interior of the present invention;
fig. 2 is a schematic top view of the present invention.
In the figure: the device comprises a furnace body 1, a copper water jacket 2, overflow holes 201, an oxidation section 3, an oxidation section charging hole 301, an oxidation section primary tuyere 302, an oxidation section secondary tuyere 303, a reduction section 4, a reduction section charging hole 401, a reduction section primary tuyere 402, an outflow hole 403, an electric heating front bed 5, a pig iron discharge hole 501, a slag discharge hole 502, electrodes 503, a material level line 6 and a metal phase and slag phase layer line 7.
Detailed Description
In order to make the technical means, the original characteristics, the achieved purpose and the efficacy of the utility model easy to understand, the utility model is further described with reference to the specific drawings.
Example 1
As shown in figures 1 and 2, the oxygen-enriched side-blown converter for recovering iron from metal waste by forced reduction comprises a furnace body 1, wherein the interior of the furnace body 1 is divided into an oxidation section 3 and a reduction section 4 which are horizontally arranged in parallel by a copper water jacket 2, and the bottom of the furnace body 1 is provided with an electric heating front bed 5;
the top of the oxidation section 3 is provided with an oxidation section feed inlet 301, and the top of the reduction section 4 is provided with a reduction section feed inlet 401;
the bottom of the oxidation section 3 is higher than the bottom of the reduction section 4, and a step-shaped molten pool is formed at the bottom of the furnace body 1;
a through overflow hole 201 is arranged on the copper water jacket 2 between the oxidation section 3 and the reduction section 4;
a plurality of oxidation section primary air ports 302 are arranged on the side surface of the oxidation section 3, a plurality of reduction section primary air ports 402 are arranged on the side surface of the reduction section 4, wherein the oxidation section primary air ports 302 and the reduction section primary air ports 402 are lower than the overflow holes 201; the primary tuyere 302 of the oxidation zone is positioned in the middle of the solution in the oxidation zone 3, and the primary tuyere 402 of the reduction zone is positioned in the middle of the solution in the reduction zone 4.
The bottom of the reduction section 4 is communicated with an electric heating forehearth 5 through an outflow port 403, the electric heating forehearth 5 is a standing and settling section, a pig iron discharge port 501 is arranged at the bottom of the electric heating forehearth 5, a slag discharge port 502 is arranged at the end part of the electric heating forehearth 5, and the height of the slag discharge port 502 is lower than that of the overflow hole 201.
The side walls of the oxidation section 3 and the reduction section 4 are both formed by copper water jackets 2.
Example 2
The side surface of the oxidation section 3 is provided with an oxidation section secondary air opening 303, and the oxidation section secondary air opening 303 is higher than the overflow hole 201. The other structure is the same as embodiment 1.
When the oxygen-enriched side-blown converter is in a working state, the material level line 6 is slightly higher than the height of the overflow hole 201, the material in a molten state in the oxidation section 3 overflows from the overflow hole 201 and enters the reduction section 4, the metal phase and the slag phase in the reduction section 4 flow into the electric heating fore-bed 5 through the outflow hole 403 of the reduction section 4, and the metal phase and the slag phase are kept stand and layered in the electric heating fore-bed 5 to form a metal phase and slag phase layering line 7.
A plurality of secondary air ports 303 of the oxidation section are arranged on the copper water jacket 2 on the side surface of the furnace body 1 and used for blowing a certain amount of air into the furnace so as to fully combust combustible components in the smoke.
The working principle is as follows:
an oxidation section 3 and a reduction section 4 which are horizontally arranged in parallel are arranged in a furnace body 1, the bottom of the oxidation section 3 is higher than the bottom of the reduction section 4, a step-shaped molten pool is formed at the bottom of the furnace body 1, an electric heating fore bed 5 is arranged at the bottom of the furnace body 1, and materials enter the electric heating fore bed 5 from the oxidation section 3 and the reduction section 4 in sequence. An oxidation section 3 and a reduction section 4 which are horizontally parallel are formed in a furnace body 1 through a copper water jacket 2, the same furnace has oxidation atmosphere and reduction atmosphere, the charging openings are divided into an oxidation section charging opening 301 and a reduction section charging opening 401, raw material auxiliary materials are normally added into the oxidation section charging opening 301, and reduced coal is added into the reduction section charging opening 401, so that the oxidation section 3 and the reduction section 4 are distinguished from the charging openings, and the reduction section 4 can use nitrogen as coal-carrying air to convey pulverized coal to strengthen the reduction atmosphere;
In the oxidation section 3, oxygen-enriched air is blown into a molten pool of the oxidation section 3 from a primary tuyere 302 of the oxidation section, and wraps added furnace materials to play a role of stirring, so that a melt is bubbled and expanded, a smelting reaction is carried out in a tuyere area of the molten pool of the oxidation section 3, decomposition and melting of raw materials and corresponding auxiliary materials are completed, and the materials in a molten state overflow from the molten pool of the oxidation section 3 of the previous stage to enter a molten pool of the reduction section 4 of the next stage through an overflow hole 201 on a copper water jacket 2.
And in the reduction section 4, nitrogen carries pulverized coal and is blown into a molten pool of the reduction section 4 from a primary tuyere 402 of the reduction section, the charged molten material and the reduced coal charged from a charging port 401 of the upper reduction section are stirred and reduced, metal oxides are further reduced into metal under the action of carbon and carbon monoxide under the action of high temperature, and the metal phase and slag phase are mixed together and flow into the electric heating front bed 5 through an outflow port 403 of the reduction section 4. And in the reduction section 4, nitrogen is used as coal-carrying air to convey the pulverized coal, so that a strong reduction atmosphere is created, a stirring reduction effect is achieved, the metal oxide is further reduced into metal under the action of carbon and carbon monoxide under the high-temperature effect, and the reduction recovery of iron in the iron waste can be further enhanced.
The electric heating forehearth 5 is heated by an electrode 503 arranged in the electric heating forehearth 5, the temperature of a melt in a furnace body of the electric heating forehearth 5 is maintained, so that a metal phase and a slag phase have time to stand and separate, produced pig iron is discharged from a pig iron discharge port 501 at the bottom of the furnace, and slag is siphoned and discharged from a slag discharge port 502; the electric heating forehearth 5 is also provided with a safety port, when the furnace is shut down, all slag in the furnace can be discharged from the slag discharge port 502, and all melt is discharged from the safety port. The electric heating fore bed 5 can maintain the temperature of the melt, so that the metal phase and the slag phase have time to stand and separate, and the electric heating fore bed 5 can supplement heating, thereby effectively solving the problem that the bottom metal is dead due to furnace formation; the method can carry out harmless, reduction and resource recovery treatment on the high-silicon flotation tailings (used as raw materials), wherein the high-silicon flotation tailings are tailings generated by directly cyaniding gold after precious metals are extracted by gold hydrometallurgy, and the tailings are remained after pyrite concentrate products are obtained by adopting a flotation process.
The foregoing shows and describes the general principles, principal features and advantages of the utility model. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and various changes and modifications may be made without departing from the spirit and scope of the utility model, and such changes and modifications are intended to be included within the scope of the present invention as defined by the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (3)
1. An oxygen-enriched side-blown converter for recovering iron from metal waste by forced reduction comprises a converter body and is characterized in that the interior of the converter body is divided into an oxidation section and a reduction section which are horizontally parallel by a copper water jacket, and the bottom of the converter body is provided with an electric heating front bed;
the top of the oxidation section is provided with an oxidation section charging hole, and the top of the reduction section is provided with a reduction section charging hole;
the bottom of the oxidation section is higher than that of the reduction section, and a step-shaped molten pool is formed at the bottom of the furnace body;
a through overflow hole is formed in the copper water jacket between the oxidation section and the reduction section;
the side surface of the oxidation section is provided with a plurality of oxidation section primary air ports, and the side surface of the reduction section is provided with a plurality of reduction section primary air ports, wherein the oxidation section primary air ports and the reduction section primary air ports are both lower than the overflow hole;
The bottom of the reduction section is communicated with an electric heating forehearth through an outflow port, the electric heating forehearth is a standing sedimentation section, a pig iron discharge port is arranged at the bottom of the electric heating forehearth, a slag discharge port is arranged at the end part of the electric heating forehearth, and the height of the slag discharge port is lower than that of an overflow hole.
2. An oxygen-enriched side-blown converter for the enhanced reduction recovery of iron from scrap metal as claimed in claim 1 wherein the side of said oxidation zone is provided with an oxidation zone secondary tuyere which is higher than the overflow port.
3. An oxygen-enriched side-blown converter for the enhanced reduction recovery of iron from scrap metal in accordance with claim 1 wherein the side walls of the oxidation and reduction stages are each formed by copper water jackets.
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| CN202122734617.4U CN216838046U (en) | 2021-11-09 | 2021-11-09 | Oxygen-enriched side-blown converter for recovering iron from metal waste through enhanced reduction |
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| CN202122734617.4U CN216838046U (en) | 2021-11-09 | 2021-11-09 | Oxygen-enriched side-blown converter for recovering iron from metal waste through enhanced reduction |
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| CN216838046U true CN216838046U (en) | 2022-06-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113897468A (en) * | 2021-11-09 | 2022-01-07 | 上海西勘环境科技有限公司 | Oxygen-enriched side-blown converter for recovering iron from metal waste through enhanced reduction |
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2021
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113897468A (en) * | 2021-11-09 | 2022-01-07 | 上海西勘环境科技有限公司 | Oxygen-enriched side-blown converter for recovering iron from metal waste through enhanced reduction |
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Effective date of registration: 20231104 Address after: 201600 Room 502, 5th floor, 1500 Guyang North Road, Songjiang District, Shanghai Patentee after: Shanghai Yaer Environmental Technology Co.,Ltd. Address before: 201600 unit 188, building 19, 218 huting North Road, Songjiang District, Shanghai Patentee before: Shanghai xikan Environmental Technology Co.,Ltd. |
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