CN106310876A - Kiln-opened flue gas treatment process in zinc-leaching residue volatilization kiln - Google Patents
Kiln-opened flue gas treatment process in zinc-leaching residue volatilization kiln Download PDFInfo
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- CN106310876A CN106310876A CN201610689314.6A CN201610689314A CN106310876A CN 106310876 A CN106310876 A CN 106310876A CN 201610689314 A CN201610689314 A CN 201610689314A CN 106310876 A CN106310876 A CN 106310876A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1456—Removing acid components
- B01D53/1481—Removing sulfur dioxide or sulfur trioxide
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
-
- 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
- C22B7/001—Dry processes
-
- 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
- C22B7/04—Working-up slag
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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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 relates to a kiln-opened flue gas treatment process in a zinc-leaching residue volatilization kiln. The process comprises the following steps: preparing kiln-opened flue gas in the volatilization kiln, removing dust in the kiln-opened flue gas of the volatilization kiln, transferring dust removal gas in a kiln tail dust collection bag, transferring dust removal gas in a settling bin, treating kiln-opened flue gas in a main flue pipe volatilization kiln and treating kiln-opened flue gas of the volatilization kiln which is adsorbed by a desulfurization tower. According to the process disclosed by the invention, diesel oil serves as auxiliary fuel, so that the kiln-opened flue gas in the volatilization kiln carries diesel flue gas, the diesel flue gas is capable of well absorbing the dust in the kiln-opened flue gas of the volatilization kiln, the efficiency of treating the kiln-opened flue gas in the volatilization kiln is improved, and the energy is effectively saved; the kiln-opened flue gas is simultaneously subjected to dust removal treatment by utilizing the kiln tail dust collection bag and the settling bin, so that the treatment efficiency of the kiln-opened flue gas is improved, and the equipment failure occurrence rate is reduced; and moreover, after activated carbon is added into a desulfurization dust catcher, valuable metals such as zinc, lead, silver, indium, cadmium and the like and sulfur dioxide gas in the kiln-opened flue gas of the volatilization kiln can be effectively recovered by the desulfurization dust catcher.
Description
Technical field
The present invention relates to a kind of crusts in zinc leached residue volatile kiln and open kiln flue gas treating process.
Background technology
Zinc leaching residue belongs to the dangerous waste residue in " National Hazard refuse register ", the collection of zinc leaching residue, store, transport,
Utilizing, process, dispose the process regulation having to comply with country to solid waste, the cleaning therefore realizing zinc leaching residue produces and nothing
Evilization process is the major issue that zinc abstraction enterprise need to solve, and has valency containing zinc, lead, gold, silver, indium, cadmium etc. in zinc leaching residue
Metal, is effectively treated the productivity effect that can improve zinc abstraction enterprise to it.Current domestic many zinc abstraction factories select to pass through
Rotary Kiln system processes the zinc leaching residue of zinc hydrometallurgy, is i.e. reclaimed by the zinc leaching residue of Rotary Kiln system process zinc hydrometallurgy
The valuable metals such as zinc, lead, silver, indium, cadmium.Rotary Kiln system can produce substantial amounts of zinc and leach when processing the zinc leaching residue of zinc hydrometallurgy
Slag Rotary Kiln opens kiln flue gas, and crusts in zinc leached residue volatile kiln is opened the process of kiln flue gas and is typically Rotary Kiln is opened kiln flue gas to be directly accessed electricity
Dust-collecting and dust-removing processes, and causes the long-pending knot of combustible organic to gather dust on cathode-anode plate at electricity, and long-pending knot thing easily causes what Effect of Short Circuit gathered dust
Effect, simultaneously to smoke pipe cleaning laying dust bring certain difficulty, can explode time serious, direct electricity consumption gather dust process Rotary Kiln open
Can there is the biggest potential safety hazard in kiln flue gas, some zinc abstraction factory opens in kiln flue gas combustible organic to electricity in order to avoid Rotary Kiln
The harmful effect gathered dust, directly can discharge flue gas when drying kiln and heating up, and now Rotary Kiln opens the discharge of kiln flue gas the most not
To country's waste gas emission standard, also have a strong impact on the cleaning of environment.
Summary of the invention
For the deficiencies in the prior art, it is an object of the invention to provide a kind of efficiently, energy-saving and environmental protection, the zinc of safety leaches
Slag Rotary Kiln opens kiln flue gas treating process.
For achieving the above object, the present invention provides techniques below scheme:
Kiln flue gas treating process opened by a kind of crusts in zinc leached residue volatile kiln, it is characterised in that comprise the following steps:
(1) Rotary Kiln opens the preparation of kiln flue gas: Rotary Kiln pyrometallurgical smelting zinc leaching residue produces the Rotary Kiln with diesel oil flue gas and opens
Kiln flue gas, the temperature rise period of described Rotary Kiln, normal production phase all use coal gas to be main fuel, and diesel oil is auxiliary fuel；
(2) Rotary Kiln opens the dedusting of kiln flue gas: in step (1) Rotary Kiln of preparation open kiln flue gas enter simultaneously kiln tail dust collecting sleeve and
Settling bin dust removal process；
(3) transmission of kiln tail dust collecting sleeve dedusting gas: with blower fan by through kiln tail dust collecting sleeve gather dust process Rotary Kiln open kiln flue gas
It is sent in main smoke pipe pipeline；
(4) transmission of settling bin dedusting gas: the Rotary Kiln through settling bin dust removal process opens kiln flue gas by blow-on smoke pipe transmission
To main smoke pipe pipeline；
(5) main smoke pipe Rotary Kiln opens the process of kiln flue gas: the Rotary Kiln in main smoke pipe pipeline is opened kiln flue gas and delivered to desulfurizing tower, desulfurization
Desulfurizing dust-collector in tower can be opened the dust in kiln flue gas by the Rotary Kiln in main smoke pipe pipeline and sulfur dioxide gas absorbs, warp
Rotary Kiln in the main smoke pipe pipeline of desulfurizing tower desulfurization and dedusting opens kiln flue gas can qualified discharge；
(6) Rotary Kiln of desulfurizing tower absorption opens the process of kiln flue gas: the Rotary Kiln of desulfurizing tower absorption is opened kiln flue gas and sent into slurrying tank
Pulp, the dust after pulp is re-fed into pressure filter filter pressing, and the filtering residue that filter pressing obtains leaches for zinc and reclaims metallic zinc, and filter pressing obtains
Filtrate is put into acidolysis groove acidolysis and is processed.
Preferably, coal gas described in step (1) with the weight part ratio of diesel oil is: 110-130:15-35.
Preferably, kiln tail dust collecting sleeve described in step (2) is fluorine this Nomex dust-removal cloth-bag beautiful or glass fibre dust removing cloth
Bag, described settling bin refers to the gravity settling chamber that efficiency of dust collection is 65%.
Preferably, described in step (5), desulfurizing tower type is spray column.
Preferably, desulfurizing dust-collector contains activated carbon described in step (5).
Preferably, the filtrate that the filter pressing described in step (6) obtains can be used for producing commodity after acidolysis groove acidolysis processes
Sulphuric acid.
In above-mentioned steps (1), the temperature rise period of Rotary Kiln, normal production phase all use coal gas to be main fuel, and diesel oil is auxiliary
Combustion-supporting material, owing to the energy density of diesel oil is higher than the energy density of coal gas, adding diesel oil is the intensification of Rotary Kiln after auxiliary fuel
Accelerating, time Rotary Kiln temperature rise period reduces, and the energy density height of diesel oil to result in the burning of diesel oil in Rotary Kiln insufficient,
Making Rotary Kiln open kiln flue gas with diesel oil flue gas, diesel oil flue gas can absorb Rotary Kiln well and open the dust in kiln flue gas,
And then improve Rotary Kiln and process and open the efficiency of kiln flue gas, and the effectively save energy.
In above-mentioned steps (2), Rotary Kiln is opened kiln flue gas and can be entered kiln tail dust collecting sleeve and settling bin dust removal process simultaneously, due to
The amount opening kiln flue gas that Rotary Kiln produces is very big, and the amount opening kiln flue gas that need to process is very big, and kiln tail dust collecting sleeve and settling bin are simultaneously
Split kiln flue gas carries out dust removal process and not only makes out kiln fume treatment efficiency increase, and also reduces kiln tail dust collecting sleeve simultaneously and sinks
The fault occurrence frequency in fall storehouse；The present invention does not makes electricity consumption gather dust to Rotary Kiln to open kiln flue gas to carry out dust removal process, can be prevented effectively from
Electricity gathers dust and processes the potential safety hazard existed when Rotary Kiln opens kiln flue gas so that produce more safety and stability.
After adding activated carbon in the desulfurizing dust-collector of desulfurizing tower in above-mentioned steps (5), the desulfurization of desulfurizing dust-collector removes
Dirt effect is more preferable, can effectively absorb Rotary Kiln and open the dust in kiln flue gas and sulfur dioxide gas so that waving after desulfurization and dedusting
Send out kiln open kiln flue gas can qualified discharge.
In above-mentioned steps (6), the Rotary Kiln of desulfurizing tower absorption is opened kiln flue gas and is sent into slurrying tank pulp, and the dust after pulp is again
Sending into pressure filter filter pressing, the filtering residue that filter pressing obtains leaches for zinc and reclaims metallic zinc, and filter pressing obtains filtrate and puts into acidolysis groove acidolysis
Process, efficient recovery Rotary Kiln can open the valuable metals such as the zinc in kiln flue gas, lead, silver, indium, cadmium, and can effectively utilize Rotary Kiln
Open the sulfur dioxide gas in kiln flue gas.
It is an advantage of the current invention that with diesel oil as auxiliary fuel, and the energy density height of diesel oil result in bavin in Rotary Kiln
The burning of oil is insufficient so that Rotary Kiln opens kiln flue gas with diesel oil flue gas, and diesel oil flue gas can absorb Rotary Kiln well and open
Dust in kiln flue gas, and then improve Rotary Kiln and process and open the efficiency of kiln flue gas, and the effectively save energy；Kiln tail is utilized to gather dust
Bag and settling bin the most split kiln flue gas carry out dust removal process and kiln fume treatment efficiency are increased, and also reduce kiln tail simultaneously
Dust collecting sleeve and the fault occurrence frequency of settling bin；After adding activated carbon in desulfurizing dust-collector, Rotary Kiln is opened by desulfurizing dust-collector
The desulfurization and dedusting effect of kiln flue gas is more preferable, and efficient recovery Rotary Kiln can open the zinc in kiln flue gas, lead, silver, indium, cadmium etc. and have valency gold
Belong to, also can effectively utilize Rotary Kiln to open the sulfur dioxide gas in kiln flue gas.
Accompanying drawing explanation
Accompanying drawing 1 is the process chart of the present invention.
Detailed description of the invention
The following examples can help those skilled in the art that the present invention is more fully understood, but cannot be with any
Mode limits the present invention.
Embodiment 1
Kiln flue gas treating process opened by a kind of crusts in zinc leached residue volatile kiln, comprises the following steps:
(1) Rotary Kiln opens the preparation of kiln flue gas: Rotary Kiln pyrometallurgical smelting zinc leaching residue produces the Rotary Kiln with diesel oil flue gas and opens
Kiln flue gas, the temperature rise period of Rotary Kiln, normal production phase all use coal gas to be main fuel, and diesel oil is auxiliary fuel, coal gas with
The weight part ratio of diesel oil is: 110:15；
(2) Rotary Kiln opens the dedusting of kiln flue gas: in step (1), the Rotary Kiln of preparation is opened kiln flue gas and entered fluorine this Nomex beautiful simultaneously
Dust-removal cloth-bag and settling bin dust removal process；
(3) transmission of kiln tail dust collecting sleeve dedusting gas: with blower fan by through kiln tail dust collecting sleeve gather dust process Rotary Kiln open kiln flue gas
It is sent in main smoke pipe pipeline；
(4) transmission of settling bin dedusting gas: the Rotary Kiln through settling bin dust removal process opens kiln flue gas by blow-on smoke pipe transmission
To main smoke pipe pipeline；
(5) main smoke pipe Rotary Kiln opens the process of kiln flue gas: the Rotary Kiln in main smoke pipe pipeline is opened kiln flue gas and delivered to spraying type desulfurization
Tower, the Rotary Kiln that can effectively absorb in main smoke pipe pipeline containing activated carbon in the desulfurizing dust-collector in desulfurizing tower is opened in kiln flue gas
Dust and sulfur dioxide gas, the Rotary Kiln in the main smoke pipe pipeline of desulfurizing tower desulfurization and dedusting opens kiln flue gas can qualified row
Put；
(6) Rotary Kiln of desulfurizing tower absorption opens the process of kiln flue gas: the Rotary Kiln of desulfurizing tower absorption is opened kiln flue gas and sent into slurrying tank
Pulp, the dust after pulp is re-fed into pressure filter filter pressing, and the filtering residue that filter pressing obtains leaches for zinc and reclaims metallic zinc, and filter pressing obtains
Filtrate is put into acidolysis groove acidolysis and is processed.
Embodiment 2
Kiln flue gas treating process opened by a kind of crusts in zinc leached residue volatile kiln, comprises the following steps:
(1) Rotary Kiln opens the preparation of kiln flue gas: Rotary Kiln pyrometallurgical smelting zinc leaching residue produces the Rotary Kiln with diesel oil flue gas and opens
Kiln flue gas, the temperature rise period of Rotary Kiln, normal production phase all use coal gas to be main fuel, and diesel oil is auxiliary fuel, coal gas with
The weight part ratio of diesel oil is: 130:35；
(2) Rotary Kiln opens the dedusting of kiln flue gas: in step (1), the Rotary Kiln of preparation is opened kiln flue gas and entered glass fibre dedusting simultaneously
Cloth bag and settling bin dust removal process；
(3) transmission of kiln tail dust collecting sleeve dedusting gas: with blower fan by through kiln tail dust collecting sleeve gather dust process Rotary Kiln open kiln flue gas
It is sent in main smoke pipe pipeline；
(4) transmission of settling bin dedusting gas: the Rotary Kiln through settling bin dust removal process opens kiln flue gas by blow-on smoke pipe transmission
To main smoke pipe pipeline；
(5) main smoke pipe Rotary Kiln opens the process of kiln flue gas: the Rotary Kiln in main smoke pipe pipeline is opened kiln flue gas and delivered to spraying type desulfurization
Tower, the Rotary Kiln that can effectively absorb in main smoke pipe pipeline containing activated carbon in the desulfurizing dust-collector in desulfurizing tower is opened in kiln flue gas
Dust and sulfur dioxide gas, the Rotary Kiln in the main smoke pipe pipeline of desulfurizing tower desulfurization and dedusting opens kiln flue gas can qualified row
Put；
(6) Rotary Kiln of desulfurizing tower absorption opens the process of kiln flue gas: the Rotary Kiln of desulfurizing tower absorption is opened kiln flue gas and sent into slurrying tank
Pulp, the dust after pulp is re-fed into pressure filter filter pressing, and the filtering residue that filter pressing obtains leaches for zinc and reclaims metallic zinc, and filter pressing obtains
Filtrate is put into acidolysis groove acidolysis and is processed.
Embodiment 3
Kiln flue gas treating process opened by a kind of crusts in zinc leached residue volatile kiln, comprises the following steps:
(1) Rotary Kiln opens the preparation of kiln flue gas: Rotary Kiln pyrometallurgical smelting zinc leaching residue produces the Rotary Kiln with diesel oil flue gas and opens
Kiln flue gas, the temperature rise period of Rotary Kiln, normal production phase all use coal gas to be main fuel, and diesel oil is auxiliary fuel, coal gas with
The weight part ratio of diesel oil is: 120:25；
(2) Rotary Kiln opens the dedusting of kiln flue gas: in step (1), the Rotary Kiln of preparation is opened kiln flue gas and entered glass fibre dedusting simultaneously
Cloth bag and settling bin dust removal process；
(3) transmission of kiln tail dust collecting sleeve dedusting gas: with blower fan by through kiln tail dust collecting sleeve gather dust process Rotary Kiln open kiln flue gas
It is sent in main smoke pipe pipeline；
(4) transmission of settling bin dedusting gas: the Rotary Kiln through settling bin dust removal process opens kiln flue gas by blow-on smoke pipe transmission
To main smoke pipe pipeline；
(5) main smoke pipe Rotary Kiln opens the process of kiln flue gas: the Rotary Kiln in main smoke pipe pipeline is opened kiln flue gas and delivered to spraying type desulfurization
Tower, the Rotary Kiln that can effectively absorb in main smoke pipe pipeline containing activated carbon in the desulfurizing dust-collector in desulfurizing tower is opened in kiln flue gas
Dust and sulfur dioxide gas, the Rotary Kiln in the main smoke pipe pipeline of desulfurizing tower desulfurization and dedusting opens kiln flue gas can qualified row
Put；
(6) Rotary Kiln of desulfurizing tower absorption opens the process of kiln flue gas: the Rotary Kiln of desulfurizing tower absorption is opened kiln flue gas and sent into slurrying tank
Pulp, the dust after pulp is re-fed into pressure filter filter pressing, and the filtering residue that filter pressing obtains leaches for zinc and reclaims metallic zinc, and filter pressing obtains
Filtrate is put into acidolysis groove acidolysis and is processed.
Comparative example 1
Compared with Example 1, comparative example 1 uses coal gas to be fuel in step (1), does not add auxiliary fuel, remaining step
The most same as in Example 1.
Comparative example 2
Compared with Example 1, comparative example 2 electricity consumption in step (2) is gathered dust and Rotary Kiln is opened kiln flue gas is carried out dust removal process and pass
Delivering to, in main smoke pipe pipeline, also not carry out the process technique of step (3) and (4), remaining step is the most same as in Example 1.
Comparative example 3
Compared with Example 1, comparative example 3 desulfurizing dust-collector in desulfurizing tower in step (5) does not adds activated carbon, remaining step
The most same as in Example 1.
Comparative example 4
Compared with Example 1, Rotary Kiln is opened the process of kiln flue gas and is processed without step (6) by comparative example 4, remaining step all with
Embodiment 1 is identical.
7 groups carry out crusts in zinc leached residue volatile kiln and open kiln flue gas treating process commerical test below, often group 1 time, every secondary tracking 1
In week, it is contrast test: A, B, component C do not use the crusts in zinc leached residue volatile kiln in embodiment 1-3 to open kiln flue gas treating process to enter
Row commerical test, D, E, F, G group uses the crusts in zinc leached residue volatile kiln in comparative example 1-4 to open kiln flue gas treating process to enter respectively
Row commerical test, result such as table 1.
Table 1
| Packet | Dust removal efficiency (%) | Exhaust emissions SO2Concentration (mg/m) | Zinc recovery (%) | Energy consumption reduces (%) |
| A | 99.14 | 183.1 | 81.5 | 5.13 |
| B | 99.23 | 185.3 | 80.6 | 5.11 |
| C | 99.18 | 182.6 | 83.2 | 5.12 |
| D | 97.02 | 180.2 | 75.1 | 3.06 |
| E | 95.15 | 311.1 | 70.0 | 2.57 |
| F | 99.02 | 263.5 | 76.2 | 4.98 |
| G | 99.11 | 184.8 | 72.3 | 5.23 |
Having the above results to be not difficult to find out, during with diesel oil for auxiliary fuel, the energy density height of diesel oil result in diesel oil in Rotary Kiln
Burning insufficient so that Rotary Kiln opens kiln flue gas with diesel oil flue gas, and diesel oil flue gas can absorb Rotary Kiln well and open kiln
Dust in flue gas, and then improve Rotary Kiln and process and open the efficiency of kiln flue gas, and the effectively save energy；Utilize kiln tail dust collecting sleeve
Kiln flue gas the most split with settling bin carries out dust removal process and kiln fume treatment efficiency is increased, and also reduces kiln tail simultaneously and receives
Dirt bag and the fault occurrence frequency of settling bin；After adding activated carbon in desulfurizing dust-collector, Rotary Kiln is opened kiln by desulfurizing dust-collector
The desulfurization and dedusting effect of flue gas is more preferable, and efficient recovery Rotary Kiln can open the zinc in kiln flue gas, lead, silver, indium, cadmium etc. and have valency gold
Belong to, also can effectively utilize Rotary Kiln to open the sulfur dioxide gas in kiln flue gas.
Although, the present invention is described in detail the most with a general description of the specific embodiments, but
On the basis of the present invention, can make some modifications or improvements it, this will be apparent to those skilled in the art.Cause
This, these modifications or improvements without departing from theon the basis of the spirit of the present invention, belong to the scope of protection of present invention.
Claims (6)
1. kiln flue gas treating process opened by a crusts in zinc leached residue volatile kiln, it is characterised in that comprise the following steps:
Rotary Kiln opens the preparation of kiln flue gas: Rotary Kiln pyrometallurgical smelting zinc leaching residue produces the Rotary Kiln with diesel oil flue gas and opens kiln cigarette
Gas, the temperature rise period of described Rotary Kiln, normal production phase all use coal gas to be main fuel, and diesel oil is auxiliary fuel；
Rotary Kiln opens the dedusting of kiln flue gas: in step (1), the Rotary Kiln of preparation is opened kiln flue gas and entered kiln tail dust collecting sleeve with heavy simultaneously
Fall storehouse dust removal process；
The transmission of kiln tail dust collecting sleeve dedusting gas: with blower fan by through kiln tail dust collecting sleeve gather dust process Rotary Kiln open kiln flue gas transmission
To main smoke pipe pipeline；
The transmission of settling bin dedusting gas: the Rotary Kiln through settling bin dust removal process is opened kiln flue gas and is sent to by blow-on smoke pipe main
In smoke pipe pipeline；
Main smoke pipe Rotary Kiln opens the process of kiln flue gas: the Rotary Kiln in main smoke pipe pipeline is opened kiln flue gas and delivered to desulfurizing tower, desulfurizing tower
Rotary Kiln in main smoke pipe pipeline can be opened the dust in kiln flue gas by interior desulfurizing dust-collector and sulfur dioxide gas absorbs, through de-
Rotary Kiln in the main smoke pipe pipeline of sulfur tower desulfurization and dedusting opens kiln flue gas can qualified discharge；
The Rotary Kiln of desulfurizing tower absorption opens the process of kiln flue gas: the Rotary Kiln of desulfurizing tower absorption is opened kiln flue gas and sent into slurrying tank slurry
Changing, the dust after pulp is re-fed into pressure filter filter pressing, and the filtering residue that filter pressing obtains leaches for zinc and reclaims metallic zinc, and filter pressing is filtered
Liquid is put into acidolysis groove acidolysis and is processed.
Kiln flue gas treating process opened by a kind of crusts in zinc leached residue volatile kiln the most according to claim 1, it is characterised in that step
(1) coal gas described in the weight part ratio of diesel oil is: 110-130:15-35.
Kiln flue gas treating process opened by a kind of crusts in zinc leached residue volatile kiln the most according to claim 1, it is characterised in that step
(2) dust collecting sleeve of kiln tail described in is fluorine this Nomex dust-removal cloth-bag beautiful or glass fibre dust-removal cloth-bag, and described settling bin refers to remove
Dirt efficiency is the gravity settling chamber of 65%.
Kiln flue gas treating process opened by a kind of crusts in zinc leached residue volatile kiln the most according to claim 1, it is characterised in that step
(5) desulfurizing tower type described in is spray column.
Kiln flue gas treating process opened by a kind of crusts in zinc leached residue volatile kiln the most according to claim 1, it is characterised in that step
(5) containing activated carbon in desulfurizing dust-collector described in.
Kiln flue gas treating process opened by a kind of crusts in zinc leached residue volatile kiln the most according to claim 1, it is characterised in that step
(6) filtrate that the filter pressing described in obtains can be used for producing commodity sulphuric acid after acidolysis groove acidolysis processes.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109000154A (en) * | 2018-06-19 | 2018-12-14 | 广西南丹南方金属有限公司 | Smoke conveying duct interconnects efficient control structure and its application apparatus |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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