CN107974556A - A kind of dezincification device for blast furnace dedusting ash - Google Patents
A kind of dezincification device for blast furnace dedusting ash Download PDFInfo
- Publication number
- CN107974556A CN107974556A CN201711242098.1A CN201711242098A CN107974556A CN 107974556 A CN107974556 A CN 107974556A CN 201711242098 A CN201711242098 A CN 201711242098A CN 107974556 A CN107974556 A CN 107974556A
- Authority
- CN
- China
- Prior art keywords
- blast furnace
- dedusting ash
- restoring component
- furnace dedusting
- zinc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
- C22B1/00—Preliminary treatment of ores or scrap
-
- 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
- C22B19/00—Obtaining zinc or zinc oxide
-
- 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
- C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
- C22B7/02—Working-up flue dust
-
- 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 present invention, which discloses, is related to blast furnace process technical field of auxiliary equipment, especially a kind of dezincification device for blast furnace dedusting ash, it includes being heated at high temperature mechanism, restoring component, air inlet pipe, air outlet pipe, valve actuating mechanism, the restoring component is arranged on the inside of high-temperature heating mechanism, described air inlet pipe one end is connected with valve actuating mechanism, the other end is located in restoring component, and one end of the air outlet pipe is located in restoring component, and the other end is positioned at the outside of high-temperature heating mechanism.The present invention provides a kind of dezincification device for the blast furnace dedusting ash that ferrous metal rate is high, zinc removal efficiency is high.
Description
Technical field
The present invention relates to blast furnace process technical field of auxiliary equipment, especially a kind of dezincification for blast furnace dedusting ash fills
Put.
Background technology
Substantial amounts of iron content secondary resource is generated in steel and iron industry production process, such as blast furnace dedusting ash, converter dust-removing ash, heat
Oil-containing oxide scale slag, cold rolling brown iron oxide etc. are rolled, these iron content secondary resources are in addition to containing substantial amounts of ferro element, part iron content
It is the typical iron content secondary resource of the characteristic to contain element, the blast furnace dedusting ash such as zinc, lead, carbon in secondary resource.
The main valuable element of blast furnace dedusting ash is iron, zinc, carbon, and wherein iron, zinc exists in the form of an oxide, and carbon is mainly Jiao
Powdered carbon.The recycling of iron mainly carries out in high temperature reduction device in blast furnace dedusting ash, such as Muffle furnace, and iron, zinc oxide are in height
Reduction reaction generation ferrous metal compound material and metallic zinc occurs under the conditions of warm (950-1200 DEG C) with carbon, metallic zinc is in reduction temperature
Under the conditions of distillation be zinc fume.At present, since the sealing in some high temperature reduction devices is poor, particularly feed inlet and outlet is close
Envelope, admits air into reduction apparatus and the oxidation of metallic iron secondary oxidation and carbon occurs, ultimately result in iron after reduction
Degree of metalization is low, zinc removal efficiency is not high, and ferrous metal rate is low between 30-40%, and zinc removal efficiency is between 50-60%.Have
Even if the sealing in high temperature reduction device is preferable, be limited by zinc fume not diffusion discharge in time, although ferrous metal rate it is high but
Zinc removal efficiency is relatively low, while zinc fume is oxidizable in stove and is attached on the refractory material or calandria of device, causes high temperature
The resistance to material damage of reduction apparatus, influences the use of high temperature reduction device.
The content of the invention
The technical problems to be solved by the invention are to provide the blast furnace dedusting ash that a kind of ferrous metal rate is high, zinc removal efficiency is high
Dezincification device.
The present invention solves a kind of dezincification device for blast furnace dedusting ash used by its technical problem, including high-temperature heating
Mechanism, restoring component, air inlet pipe, air outlet pipe, valve actuating mechanism, the restoring component are arranged on the inside of high-temperature heating mechanism, institute
State air inlet pipe one end with valve actuating mechanism to be connected, the other end is located in restoring component, and one end of the air outlet pipe is located at reducing machine
In structure, the other end is positioned at the outside of high-temperature heating mechanism.
It is further that the high-temperature heating mechanism is high temperature Muffle furnace.
It is further that high temperature Muffle furnace includes furnace body and bell, and the material of the bell is high temperature oxidation resisting aluminum fiber
Plate.
It is further that the restoring component includes steel cylinder, steel lid, the steel cylinder is connected with steel lid.
It is further that the steel cylinder, the material of steel lid are heat safe stainless steel.
It is further that the restoring component further includes alundum tube, the alundum tube is arranged on the inside of steel cylinder.
It is further to further include zinc collecting mechanism, the zinc collecting mechanism is connected with the other end of air outlet pipe.
The beneficial effects of the invention are as follows：Blast furnace dedusting ash and coke are placed on to the inside of restoring component, by high temperature plus
Heat engine structure heats restoring component, and between restoring component's temperature is heated to 950-1200 DEG C, dedusting ash is with coke also
Produce reduction reaction generation ferrous metal compound material and metallic zinc in former mechanism, metallic zinc and then to distil be zinc fume, when reacting,
, can be timely by the zinc fume of generation and flue gas by valve actuating mechanism, air inlet pipe toward gas, such as nitrogen is passed through in restoring component
The outside of high-temperature heating mechanism is expelled to by air outlet pipe, the removal efficiency of zinc is improved, reduces zinc fume to restoring component
Infringement, since restoring component is positioned at the inside of high-temperature heating mechanism, ensure that air-tightness during reaction, it is therefore prevented that air enters also
Former mechanism causes ferrous metal compound material secondary oxidation, after finally cooling down, takes out ferrous metal compound material, completes returning for blast furnace dedusting ash
Receive and utilize, by examining ferrous metal compound material, more than 83%, zinc removal efficiency significantly improves ferrous metal rate more than 92%
The ferrous metal rate and zinc removal efficiency of blast furnace dedusting ash, beneficial to popularization.
Brief description of the drawings
Fig. 1 is the structure diagram of the present invention；
Parts, position and numbering in figure：Be heated at high temperature mechanism 1, bell 11, restoring component 2, steel cylinder 21, steel lid 22, just
Beautiful pipe 23, air inlet pipe 3, air outlet pipe 4.
Embodiment
The invention will be further described below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of dezincification device for blast furnace dedusting ash of the invention, including high-temperature heating mechanism 1, reducing machine
Structure 2, air inlet pipe 3, air outlet pipe 4, valve actuating mechanism, restoring component 2 be arranged on high-temperature heating mechanism 1 inside, 3 one end of air inlet pipe with
Valve actuating mechanism is connected, and the other end is located in restoring component 2, and one end of air outlet pipe 4 is located in restoring component 2, and the other end is located at
It is heated at high temperature the outside of mechanism 1.
Specifically, high-temperature heating mechanism 1 can be high temperature Muffle furnace or high temperature reduction furnace, preferably high temperature Muffle furnace, high temperature
Muffle furnace includes furnace body and bell 11, and the material of bell 11 is high temperature oxidation resisting aluminum fiberboard, and high temperature oxidation resisting aluminum fiberboard has
There is high leakproofness, further, sealing structure is provided between furnace body and bell 11.
Valve actuating mechanism is made of gas cylinder, flowmeter, mixed gas tank and supporting gas-distribution pipe, air inlet pipe 3, the material of air outlet pipe 4
Of fine quality to select heat safe stainless steel, the gas being passed through in valve actuating mechanism can be depending on the temperature of restoring component 2, restoring component 2
Protection gas N2 or also Primordial Qi (CO, H are passed through in heating and insulating process2), it is heated at high temperature the power failure of mechanism 1 certainly after reaching the recovery time
So it is cooled to room temperature, before restoring component 2 is less than 200 DEG C in cooling procedure, is passed through protection gas N2 always.
Restoring component 2 includes steel cylinder 21, steel lid 22, and the steel cylinder 21 is connected with steel lid 22, and steel cylinder 21, steel lid 22 are set
Sealing structure is equipped with, steel cylinder 21, the material of steel lid 22 are preferably heat safe stainless steel.Due to using process in restoring component 2
In, the zinc fume of generation has steel cylinder 21 certain infringement all the time, in order to reduce infringement and convenience of the zinc fume to steel cylinder 21 more
Change, then as shown in Figure 1, being provided with alundum tube 23 in restoring component 2, alundum tube 23 is arranged on the inside of steel cylinder 21, preferably just
Beautiful pipe 23, which reclines, to be arranged on the inner wall of steel cylinder 21.Alundum tube 23 can reduce the infringement to steel cylinder 21, be more to replace corundum
Pipe 23, significantly improves the usage time of restoring component 2.
In use, blast furnace dedusting ash and coke are placed on to the inside of restoring component 2, by being heated at high temperature 1 pair of mechanism also
Former mechanism 2 is heated, and between 2 temperature of restoring component is heated to 950-1200 DEG C, dedusting ash is with coke in restoring component 2
Generation reduction reaction generation ferrous metal compound material and metallic zinc, metallic zinc and then distillation are zinc fume, in reaction, pass through distribution
Mechanism, air inlet pipe 3, can be in time by going out by the zinc fume of generation and flue gas toward gas, such as nitrogen is passed through in restoring component 2
Tracheae is expelled to the outside of high-temperature heating mechanism, improves the removal efficiency of zinc, also reduces damage of the zinc fume to restoring component 2
Evil, since restoring component 2 is positioned at the inside of high-temperature heating mechanism 1, ensure that air-tightness during reaction, it is therefore prevented that air enters also
Former mechanism 2 causes ferrous metal compound material secondary oxidation, after finally cooling down, takes out ferrous metal compound material, completes blast furnace dedusting ash
Recycle, by examining ferrous metal compound material, more than 83%, zinc removal efficiency significantly carries ferrous metal rate more than 92%
The high ferrous metal rate and zinc removal efficiency of blast furnace dedusting ash, beneficial to popularization.
The present invention is additionally provided with zinc collecting mechanism, and zinc collecting mechanism is connected with the other end of air outlet pipe 4, zinc collecting mechanism
The zinc fume produced to reaction is collected.
Claims (7)
- A kind of 1. dezincification device for blast furnace dedusting ash, it is characterised in that：Including high-temperature heating mechanism (1), restoring component (2), air inlet pipe (3), air outlet pipe (4), valve actuating mechanism, the restoring component (2) are arranged on the inside of high-temperature heating mechanism (1), Described air inlet pipe (3) one end is connected with valve actuating mechanism, and the other end is located in restoring component (2), one end of the air outlet pipe (4) In restoring component (2), the other end is positioned at the outside of high-temperature heating mechanism (1).
- A kind of 2. dezincification device for blast furnace dedusting ash as claimed in claim 1, it is characterised in that：The high-temperature heating machine Structure (1) is high temperature Muffle furnace.
- A kind of 3. dezincification device for blast furnace dedusting ash as claimed in claim 2, it is characterised in that：High temperature Muffle furnace includes Furnace body and bell (11), the material of the bell (11) is high temperature oxidation resisting aluminum fiberboard.
- A kind of 4. dezincification device for blast furnace dedusting ash as claimed in claim 1, it is characterised in that：The restoring component (2) steel cylinder (21), steel lid (22) are included, the steel cylinder (21) is connected with steel lid (22).
- A kind of 5. dezincification device for blast furnace dedusting ash as claimed in claim 4, it is characterised in that：The steel cylinder (21), The material of steel lid (22) is heat safe stainless steel.
- A kind of 6. dezincification device for blast furnace dedusting ash as claimed in claim 5, it is characterised in that：The restoring component (2) alundum tube (23) is further included, the alundum tube (23) is arranged on the inside of steel cylinder (21).
- A kind of 7. dezincification device for blast furnace dedusting ash as described in claim 1 to 6 any one, it is characterised in that：Also Including zinc collecting mechanism, the zinc collecting mechanism is connected with the other end of air outlet pipe (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711242098.1A CN107974556A (en) | 2017-11-30 | 2017-11-30 | A kind of dezincification device for blast furnace dedusting ash |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711242098.1A CN107974556A (en) | 2017-11-30 | 2017-11-30 | A kind of dezincification device for blast furnace dedusting ash |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107974556A true CN107974556A (en) | 2018-05-01 |
Family
ID=62008800
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711242098.1A Pending CN107974556A (en) | 2017-11-30 | 2017-11-30 | A kind of dezincification device for blast furnace dedusting ash |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107974556A (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103374637A (en) * | 2013-07-23 | 2013-10-30 | 首钢总公司 | Apparatus and method for direct removal of zinc oxide in powder solid material of blast furnace |
| CN103374636A (en) * | 2013-07-23 | 2013-10-30 | 首钢总公司 | Device and method for removing ZnO from powdered solid material |
-
2017
- 2017-11-30 CN CN201711242098.1A patent/CN107974556A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103374637A (en) * | 2013-07-23 | 2013-10-30 | 首钢总公司 | Apparatus and method for direct removal of zinc oxide in powder solid material of blast furnace |
| CN103374636A (en) * | 2013-07-23 | 2013-10-30 | 首钢总公司 | Device and method for removing ZnO from powdered solid material |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180501 |
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| RJ01 | Rejection of invention patent application after publication |