CN101429593A - Dezincification process for zinc-containing mash gas mud - Google Patents
Dezincification process for zinc-containing mash gas mud Download PDFInfo
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- CN101429593A CN101429593A CNA2007101580748A CN200710158074A CN101429593A CN 101429593 A CN101429593 A CN 101429593A CN A2007101580748 A CNA2007101580748 A CN A2007101580748A CN 200710158074 A CN200710158074 A CN 200710158074A CN 101429593 A CN101429593 A CN 101429593A
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- zinc
- gas mud
- mash gas
- zincous
- containing mash
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses a process for removing zinc of zincous gas mud. The process is characterized in that a tunnel kiln is utilized to process the zincous gas mud; specific equipment comprises a tunnel kiln body, a kiln car and a reaction tank; the zincous gas mud is put to the reaction tank; the reaction tank is put on the kiln car; the kiln car runs in the tunnel kiln and passes through a preheating belt, a sintering belt and a cooling belt to complete the reduction process; under the condition of no addition of other compositions, the process utilizes the prior tunnel kiln in the refractory industry, uses the simple production process to independently process the zincous gas mud and effectively reduces the zinc content of the gas mud in order that the zinc content in the zincous gas mud is reduced from original 0.67 percent to less than 0.005 percent. The product is applied to the smelting of a blast furnace and reduces erosion to a blast furnace body, so as not to influence the service life of the blast furnace; and the production process is simple and convenient, is suitable for processing mass zincous gas mud materials, and effectively reduces the zinc content of a zincous material.
Description
Technical field
The invention belongs to the comprehensive utilization in the steel smelting procedure, relate to the treatment process of the dirt mud that produces in the blast-furnace smelting, specifically is a kind of Dezincification process of zinc-containing mash gas mud.
Background technology
Consider from the angle that economizes on resources, prolongs blast furnace campaign and environmental protection, existing metallurgy industry all will reclaim the gas mud that blast furnace produces, handling the back delivers in blast furnace or the converter as raw material, the method of handling gas mud at present all needs to carry out treatment process such as premolding, drying to wherein adding high ferro dry powder; Processing for zinc-containing mash gas mud is then more cumbersome, and its treatment facility need be established mixing tank, water trap, compactor, rotary hearth furnace, pelletizing cooling etc., and its investment is big, cost is high.
Summary of the invention
The present invention discloses a kind of Dezincification process of zinc-containing mash gas mud, it has broken traditional treatment process, does not promptly add the high ferro dry mash, also need not pretreatment technology, utilize the characteristics of the tunnel furnace of refractory materials production usefulness, directly in tunnel furnace, carry out reduction reaction and reach the dezincification purpose.
The characteristics of technological process of the present invention are to utilize tunnel furnace to handle zinc-containing mash gas mud, concrete equipment comprises tunnel furnace, kiln car, retort, technical process is for to put into retort with zinc-containing mash gas mud, retort is put on the kiln car, kiln car moves in tunnel furnace, behind preheating zone, clinkering zone, cooling zone, finish reduction process.
Concrete scheme of the present invention has, and in the preheating zone of refractories industry with the ordinary crossing kiln, has set up the zinc fume gathering system for burning till the gas mud material.
Concrete scheme of the present invention also has, and the calcining system of handling zinc-containing mash gas mud is 900～1100 ℃, and each retort was tunnel furnace clinkering zone high temperature dot insulation 10～20 hours.
The concrete treatment process of the present invention is that the zinc-containing mash gas mud material of required processing is directly packed in the retort; and at the top of retort protective cover, according to the sectional area difference of tunnel furnace, the retort quantity of being put is also different; be for zinc effectively evaporates, the loading of kiln coefficient is 0.5～0.7.
The metallic zinc fusing point is 419 ℃, and boiling point is 907 ℃.Zinc oxide and coke are heated to more than 1000 ℃ after mixing, and zinc restores boiling, is deformed into zinc fume, and the gas mud after the dezincification just can be applied among the blast furnace.
Tunnel furnace is a kind of thermal kiln furnace that high temperature burns till refractory materials that is used for, the present invention has reasonably adjusted the parameter of tunnel furnace, make it meet the condition that zinc-containing mash gas mud decomposes, and utilized advantages such as the tunnel furnace operation is continuous, throughput is big, fuel consumption is lower.
The present invention utilizes the existing tunnel furnace of fire-resistant industry under the condition that does not add other composition, with simple production technique individual curing zinc-containing mash gas mud, effectively reduce the zinc content in the gas mud, the zinc in the zinc-containing mash gas mud is reduced to below 0.005% by original 0.67%.Make its product application in blast-furnace smelting and reduce the erosion of zinc, thereby do not influence the life-span of blast furnace blast furnace; Production technique of the present invention is simple, and it is convenient to handle, and is applicable to the processing of relatively large zinc-containing mash gas mud material, effectively reduces the zinc content that contains in the Zinc material.
Description of drawings
Fig. 1 is a process flow diagram of the present invention.
Fig. 2 retort put synoptic diagram.
Embodiment
Below in conjunction with accompanying drawing specific embodiments of the invention are described in detail:
With the common tunnel furnace of refractories industry is example; zinc-containing mash gas mud is put into retort 8; and burn to prevent the charcoal in the gas mud at the top of retort 8 protective cover 9; make and form weakly reducing atmosphere (as shown in Figure 2) in the retort; retort is put on the kiln car 6; sectional area difference according to tunnel furnace; the retort quantity of being put is also different; for zinc effectively evaporates; the loading of kiln coefficient is 0.5～0.7; concrete coefficient can be decided according to varying in size of tunnel furnace, and in the present embodiment, 200～300 retort are put in every kiln car layering.
Adopt the type of heating of blast furnace and coke oven mixed gas, tunnel furnace clinkering zone 3 firing systems are provided with coal gas burner 4 along the two sides side wall of length of tunnel direction, heating curve according to furnace temperature is adjusted gas quantity, make in the stove and be controlled in certain scope temperature-stable, retort 8 on the kiln car 6 enters in the kiln from kiln hood continuously, and the zinc-containing mash gas mud material is discharged moisture content through preheating zone 2, enters clinkering zone 3 and directly reduces, behind cooling zone 5, finish reduction process as (shown in Figure 1).
As shown in Figure 1, tunnel furnace 1 integral body is sealed state, for reacting the zinc fume that is produced, according to the reaction principle and the airstream in kiln direct of travel of tunnel furnace, because kiln internal cooling tape drum wind makes the gas of generation concentrate in the preheating zone, therefore 2 set up zinc fume gathering system 7 in the preheating zone for burning till the gas mud material, with zinc fume centralized collection and condensation, pollute in order to avoid be discharged in the air, the gas mud finished product after the reduction can be directly used in blast-furnace smelting.
Claims (5)
1, a kind of Dezincification process of zinc-containing mash gas mud, it is characterized in that utilizing tunnel furnace to handle zinc-containing mash gas mud, technical process is for to put into retort (8) with zinc-containing mash gas mud, retort (8) is put on the kiln car (6), kiln car (6) is operation continuously in tunnel furnace (1), behind preheating zone (2), clinkering zone (3), cooling zone (5), finish the process that dezincifies in the zinc-containing mash gas mud.
2, the Dezincification process of a kind of zinc-containing mash gas mud according to claim 1 is characterized in that, has set up zinc fume gathering system (7) in tunnel furnace (1) preheating zone.
3, the Dezincification process of a kind of zinc-containing mash gas mud according to claim 1 is characterized in that, tunnel furnace (1) calcining system is 900～1100 ℃, and each retort was tunnel furnace clinkering zone high temperature dot insulation 10～20 hours.
4, the Dezincification process of a kind of zinc-containing mash gas mud according to claim 1 is characterized in that, the zinc-containing mash gas mud material of required processing is directly packed in the retort (8), at the top of retort protective cover (9).
5, the Dezincification process of a kind of zinc-containing mash gas mud according to claim 1 is characterized in that, kiln car loading of kiln coefficient is 0.5～0.7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101580748A CN101429593B (en) | 2007-11-07 | 2007-11-07 | Dezincification process for zinc-containing mash gas mud |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007101580748A CN101429593B (en) | 2007-11-07 | 2007-11-07 | Dezincification process for zinc-containing mash gas mud |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101429593A true CN101429593A (en) | 2009-05-13 |
| CN101429593B CN101429593B (en) | 2010-10-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2007101580748A Active CN101429593B (en) | 2007-11-07 | 2007-11-07 | Dezincification process for zinc-containing mash gas mud |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102899505A (en) * | 2012-09-29 | 2013-01-30 | 苏州永基再生资源有限公司 | Method for recovering zinc by using rotary kiln and device thereof |
| CN106893867A (en) * | 2017-03-10 | 2017-06-27 | 武汉科思瑞迪科技有限公司 | A kind of method that muffle shaft furnace treatment feed powder containing zinc-iron dirt reclaims zinc |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1997032048A1 (en) * | 1996-02-29 | 1997-09-04 | Nippon Steel Corporation | Method and apparatus for treating ironmaking dust |
| CN1286315A (en) * | 1999-08-26 | 2001-03-07 | 徐欣 | Process for comprehensive utilization of blast furnace top gas mud containing Zn |
-
2007
- 2007-11-07 CN CN2007101580748A patent/CN101429593B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102899505A (en) * | 2012-09-29 | 2013-01-30 | 苏州永基再生资源有限公司 | Method for recovering zinc by using rotary kiln and device thereof |
| CN106893867A (en) * | 2017-03-10 | 2017-06-27 | 武汉科思瑞迪科技有限公司 | A kind of method that muffle shaft furnace treatment feed powder containing zinc-iron dirt reclaims zinc |
| CN106893867B (en) * | 2017-03-10 | 2019-05-03 | 武汉科思瑞迪科技有限公司 | A kind of method of the muffle shaft furnace processing dirt of feed powder containing zinc-iron recycling zinc |
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| Publication number | Publication date |
|---|---|
| CN101429593B (en) | 2010-10-13 |
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Address after: 114000 Anshan Iron and steel plant, Tiexi District, Anshan, Liaoning Patentee after: ANSHAN IRON AND STEEL GROUP REFRACTORY Co.,Ltd. Address before: 114021 Angang Group refractory materials company, Anshan Iron and steel factory, Tiexi District, Anshan, Liaoning Patentee before: ANGANG GROUP REFRACTORIES Co. |