CN107866111A - A kind of lateritic nickel ore nickel-iron smelting flue gas treating process - Google Patents
A kind of lateritic nickel ore nickel-iron smelting flue gas treating process Download PDFInfo
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- CN107866111A CN107866111A CN201611030690.0A CN201611030690A CN107866111A CN 107866111 A CN107866111 A CN 107866111A CN 201611030690 A CN201611030690 A CN 201611030690A CN 107866111 A CN107866111 A CN 107866111A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
- B01D46/023—Pockets filters, i.e. multiple bag filters mounted on a common frame
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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
-
- 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
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- 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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/84—Biological processes
- B01D53/85—Biological processes with gas-solid contact
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/95—Specific microorganisms
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- 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
- B01D2258/025—Other waste gases from metallurgy plants
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention belongs to environmental technology field, discloses a kind of lateritic nickel ore nickel-iron smelting flue gas treating process, it comprises the following steps:First by cooling high-temperature fume to less than 100 DEG C, smoke abatement is removed subsequently into pulse bag type dust collector, when flue-gas temperature is down to below 35 DEG C, into elimination reaction device, the SO in flue gas2、NOXRemoving is fully absorbed by fume treatment agent, it is up to standard after gas discharge.Handling process simple possible of the present invention, cost is cheap, and removal effect is good, and fume treatment agent can also reuse, and save entreprise cost.
Description
Technical field
The invention belongs to environmental technology field, the flue gas treating process being related in a kind of metal smelt, more particularly, to one
Kind lateritic nickel ore nickel-iron smelting flue gas treating process.
Background technology
Lateritic nickel ore nickel-iron smelting, ore is typically passed sequentially through into the equipment such as blast furnace, converter, refining furnace, finally
To metal product.When anode furnace is smelted, in the operating process such as charging, oxidation, reduction, slagging, it can be escaped from each operation mouth black
Cigarette and harmful gas, i.e., can produce technique flue gas.Smoke components are extremely complex, usually contain sulfur dioxide, nitrogen oxides
And the harmful substance such as flue dust, the way of metallurgy industry are usually to be directly discharged in air, or by simple cooling
Directly discharged after reason, cause operating environment to deteriorate.
Sulfur dioxide and nitrogen oxides are to cause acid rain " sour gas ", and cause the " indirect greenhouse of greenhouse effects
Gas ", extensive harm and great economic loss are brought to environment.Flue gas desulfurization and denitrification is acknowledged as main flow and root at present
This effective technical controlling means, widely used process is wet process of FGD+SCR (SCR) combination smoke
Desulfurizing and denitrifying process, but its problem is investment and operating cost is high, the more difficult recycling of accessory substance, it is heavier to business burden.
It is our technologies in the urgent need to address to develop a kind of cost flue gas treating process that is cheap, practical, being adapted to smelter
Problem.
The content of the invention
For overcome the deficiencies in the prior art, the invention provides a kind of lateritic nickel ore nickel-iron smelting flue gas treating process,
The technique simple possible, cost is cheap, and removal effect is good, and fume treatment agent can also reuse, save enterprise into
This.
The present invention is realized by following scheme:
A kind of lateritic nickel ore nickel-iron smelting flue gas treating process, it comprises the following steps:
High-temperature flue gas is cooled to less than 100 DEG C with surface dripping cooler first, removed subsequently into pulse bag type dust collector
Flue dust, when flue-gas temperature is down to below 35 DEG C, into elimination reaction device, the SO in flue gas2、NOXFully inhaled by fume treatment agent
Receive removing, it is up to standard after gas by elimination reaction device gas vent discharge.
Preferably, the fume treatment agent be placed in reactor activate 3-6 hours carry out elimination reaction again;
The removing time is preferably 30-120min;
The fume treatment agent is routed in elimination reaction device, thickness 10-30cm;It is preferred that displacement in 3-7 days is once;Preferably,
The fume treatment agent can pass through recovery, re-mix, reuse with absorption carrier.
Specifically, the fume treatment agent is prepared in accordance with the following steps:
Prepare mixed bacteria liquid:By bacillus subtilis, bacillusmusilaginosiengineering, Bacillus foecalis alkaligenes, Clostridium papyrosolvens, spherical pole
Bacterium, pseudomonas aeruginosa and Acinetobacter bauamnnii are trained concentration as 1 × 10 respectively8Individual/ml bacterium solution, then according to 5:3:
3:2:2:1:1 parts by weight mixing, obtains mixed bacteria liquid;
Prepare absorption carrier:Sepiolite is added in disintegrating machine and crushed, then with diatomite according to 3:2 mass ratio mixes
Close, then be ground, it is 100 target minreal matter powder to obtain particle diameter;Maize straw is crushed, then pressed with peanut shell, sawdust
According to 2:1:1 mass ratio mixing, the agricultural wastes powder of 100 mesh is ground into,;By mineral powders and agricultural wastes powder
According to 2-3:3-5 mass ratio is added in agitator tank successively, then accounts for agricultural wastes double weight toward addition in agitator tank
Water, 500rpm stirring 20min, be subsequently placed in 80 DEG C of drying, finally crushing obtain the particle of 20 mesh, produce absorption carrier;
Stirring and low temperature drying:Again by mixed bacteria liquid and absorption carrier according to 3-5:5-9 mass ratio is mixed evenly, finally
Low temperature drying is carried out, drying temperature is 15-20 DEG C, and water content is 8-10wt% after drying, and is produced.
Preferably,
The bacillus subtilis is CGMCC No:0954;The bacillusmusilaginosiengineering is CGMCC NO.3769;The excrement
Bacillus alcaligenes is ATCC 31555;The Clostridium papyrosolvens are ATCC 700395;The Arthrobacter globiformis is CCTCC No:
M209015;The pseudomonas aeruginosa ATCC 15442;The Acinetobacter bauamnnii is ATCC 19606.
Above-mentioned bacterium can obtain from ATCC, CGMCC, CCTCC and other commercial channel.
The beneficial effect that the present invention obtains mainly includes but is not limited to following and each side:
The present invention is handled using watering cooling, dedusting and desulphurization denitration, has effectively purified flue gas, and flow operations are simple, and
And fume treatment agent can also reuse, and save entreprise cost;Fume treatment agent cost that the present invention uses is cheap, desulfurization
Denitration effect is good, significantly reduces business burden;The various strains that can form dominant microflora are matched somebody with somebody in the fume treatment agent of the present invention
Be made high-performance bio preparation, advantages of good adsorption effect, can effective desulphurization denitration, reasonable compatibility between each strain, symbiosis coordinates, mutually not
Antagonism, activity is high, and biomass is big, and breeding is fast, is readily transported and preserves, and is easier to activate during use, operating cost is cheap;This hair
Bright absorption carrier can be also equipped with preferable adsorption function as the attachment carrier of microorganism;Absorption carrier raw material of the present invention into
This is cheap, prepares simply, pore size is reasonable, advantages of good adsorption effect;Present invention uses agricultural wastes and cheap mineral matter to make
For raw material, cost is greatlyd save, meets the requirement of industry energy conservation emission reduction.
Embodiment
In order that those skilled in the art more fully understand the technical scheme in the application, have below in conjunction with the application
Body embodiment, the present invention is more clearly and completely described, it is clear that described embodiment is only the application one
Divide embodiment, rather than whole embodiments.Based on the embodiment in the application, those of ordinary skill in the art are not making
The every other embodiment obtained under the premise of creative work, should all belong to the scope of protection of the invention.
Embodiment 1
A kind of lateritic nickel ore nickel-iron smelting flue gas treating process, it comprises the following steps:
High-temperature flue gas is cooled to less than 100 DEG C with surface dripping cooler first, subsequently into pulse bag type dust collector, removed
Flue dust, when flue-gas temperature is down to below 35 DEG C, into elimination reaction device, the SO in flue gas2、NOXFully inhaled by fume treatment agent
Receive removing, it is up to standard after gas by elimination reaction device gas vent discharge.
The fume treatment agent is placed in activate 3 hours in reactor carries out elimination reaction again;It is described removing the time be
40min;
The fume treatment agent is routed in elimination reaction device, thickness 10cm.
The fume treatment agent is prepared in accordance with the following steps:
Prepare mixed bacteria liquid:By bacillus subtilis, bacillusmusilaginosiengineering, Bacillus foecalis alkaligenes, Clostridium papyrosolvens, spherical pole
Bacterium, pseudomonas aeruginosa and Acinetobacter bauamnnii are trained concentration as 1 × 10 respectively8Individual/ml bacterium solution, then according to 5:3:
3:2:2:1:1 parts by weight mixing, obtains mixed bacteria liquid;
Prepare absorption carrier:Sepiolite is added in disintegrating machine and crushed, then with diatomite according to 3:2 mass ratio mixes
Close, then be ground, it is 100 target minreal matter powder to obtain particle diameter;Maize straw is crushed, then pressed with peanut shell, sawdust
According to 2:1:1 mass ratio mixing, the agricultural wastes powder of 100 mesh is ground into,;By mineral powders and agricultural wastes powder
According to 2:3 mass ratio is added in agitator tank successively, and the water of agricultural wastes double weight is then accounted for toward addition in agitator tank,
500rpm stirs 20min, is subsequently placed in 80 DEG C of drying, finally crushes and obtains the particle of 20 mesh, produces absorption carrier;
Stirring and low temperature drying:Again by mixed bacteria liquid and absorption carrier according to 3:5 mass ratio is mixed evenly, and finally carries out
Low temperature drying, drying temperature are 15 DEG C, and water content is 8wt% after drying, and is produced.
The bacillus subtilis is CGMCC No:0954;The bacillusmusilaginosiengineering is CGMCC NO.3769;Institute
It is ATCC 31555 to state Bacillus foecalis alkaligenes;The Clostridium papyrosolvens are ATCC 700395;The Arthrobacter globiformis is CCTCC No:
M209015;The pseudomonas aeruginosa ATCC 15442;The Acinetobacter bauamnnii is ATCC 19606.
Effect:Prosperous sea science and technology is selected to smelt boiler exhaust gas, reciprocal of duty cycle 4000h-1, wherein NOx concentration 513mg/Nm3, SO2's
Concentration is 1096mg/ Nm3, the concentration of flue dust is 137mg/Nm3, after treatment, NOx concentration is down to 54mg/Nm3, SO2Concentration
It is reduced to 121mg/Nm3, the concentration of flue dust is 13.2mg/Nm3。
Embodiment 2
A kind of lateritic nickel ore nickel-iron smelting flue gas treating process, it comprises the following steps:
High-temperature flue gas is cooled to less than 100 DEG C with surface dripping cooler first, subsequently into pulse bag type dust collector, removed
Flue dust, when flue-gas temperature is down to below 35 DEG C, into elimination reaction device, the SO in flue gas2、NOXFully inhaled by fume treatment agent
Receive removing, it is up to standard after gas by elimination reaction device gas vent discharge.
The fume treatment agent is placed in 5 hours in reactor and carries out elimination reaction again;It is described removing the time be preferably
60min;The fume treatment agent is routed in elimination reaction device, thickness 15cm.
The fume treatment agent is prepared in accordance with the following steps:
Prepare mixed bacteria liquid:By bacillus subtilis, bacillusmusilaginosiengineering, Bacillus foecalis alkaligenes, Clostridium papyrosolvens, spherical pole
Bacterium, pseudomonas aeruginosa and Acinetobacter bauamnnii are trained concentration as 1 × 10 respectively8Individual/ml bacterium solution, then according to 5:3:
3:2:2:1:1 parts by weight mixing, obtains mixed bacteria liquid;
Prepare absorption carrier:Sepiolite is added in disintegrating machine and crushed, then with diatomite according to 3:2 mass ratio mixes
Close, then be ground, it is 100 target minreal matter powder to obtain particle diameter;Maize straw is crushed, then pressed with peanut shell, sawdust
According to 2:1:1 mass ratio mixing, the agricultural wastes powder of 100 mesh is ground into,;By mineral powders and agricultural wastes powder
According to 3:4 mass ratio is added in agitator tank successively, and the water of agricultural wastes double weight is then accounted for toward addition in agitator tank,
500rpm stirs 20min, is subsequently placed in 80 DEG C of drying, finally crushes and obtains the particle of 20 mesh, produces absorption carrier;
Stirring and low temperature drying:Again by mixed bacteria liquid and absorption carrier according to 5:9 mass ratio is mixed evenly, and finally carries out
Low temperature drying, drying temperature are 20 DEG C, and water content is 10wt% after drying, and is produced.
The bacillus subtilis is CGMCC No:0954;The bacillusmusilaginosiengineering is CGMCC NO.3769;Institute
It is ATCC 31555 to state Bacillus foecalis alkaligenes;The Clostridium papyrosolvens are ATCC 700395;The Arthrobacter globiformis is CCTCC No:
M209015;The pseudomonas aeruginosa ATCC 15442;The Acinetobacter bauamnnii is ATCC 19606.
Effect:Prosperous sea science and technology is selected to smelt boiler exhaust gas, reciprocal of duty cycle 4000h-1, wherein NOx concentration 562mg/Nm3, SO2's
Concentration is 1271mg/ Nm3, the concentration of flue dust is 103mg/Nm3After treatment, NOx concentration is down to 46mg/Nm3, SO2Concentration
It is reduced to 92mg/Nm3, the concentration of flue dust is 11.9mg/Nm3。
Embodiment 3
Fume treatment agent each component test effect checking of the present invention:
Control group 1:Without using composite bacteria liquid, absorption carrier is comprised only, other are the same as embodiment 1;
Control group 2:Carrier selects conventional carrier diatomaceous earth, and other are the same as embodiment 1;
Each group NOx concentration and SO after calculating processing2Concentration, specifically it is shown in Table 1:
Table 1
Group | NOx concentration(mg/Nm3) | SO2Concentration(mg/Nm3) |
Embodiment 1 | 54 | 121 |
Control group 1 | 169 | 275 |
Control group 2 | 123 | 194 |
Conclusion:In fume treatment agent of the present invention composite bacteria liquid and absorption carrier mutually cooperate with, ratio it is reasonable, desulfurization off sulfide effect
It is good.
Although above detailed explanation is made to this case with generality explanation and embodiment, at this
On the basis of invention, it can be made some modifications or improvements, this will be apparent to those skilled in the art.Therefore,
The modification or improvement made without departing from theon the basis of the spirit of the present invention, belong to the scope of protection of present invention.
Claims (5)
1. a kind of lateritic nickel ore nickel-iron smelting flue gas treating process, it comprises the following steps:
First by cooling high-temperature fume to less than 100 DEG C, smoke abatement is removed subsequently into deduster, treat flue-gas temperature be down to 35 DEG C with
When lower, into elimination reaction device, the SO in flue gas2、NOXRemoving is fully absorbed by fume treatment agent, it is up to standard after gas discharge.
2. handling process according to claim 1, it is characterised in that it is small that the fume treatment agent is placed in 3-6 in reactor
When carry out elimination reaction again;The removing time is preferably 30-120min.
3. handling process according to claim 1, it is characterised in that the fume treatment agent is routed to elimination reaction device
In, thickness 10-30cm.
4. the handling process according to claim 1-3 is allowed to one, it is characterised in that the fume treatment agent is according to following step
Suddenly it is prepared:
1)Prepare mixed bacteria liquid:By bacillus subtilis, bacillusmusilaginosiengineering, Bacillus foecalis alkaligenes, Clostridium papyrosolvens, spherical pole
Bacterium, pseudomonas aeruginosa and Acinetobacter bauamnnii are trained concentration as 1 × 10 respectively8Individual/ml bacterium solution, then according to 5:3:
3:2:2:1:1 parts by weight mixing, obtains mixed bacteria liquid;
2)Prepare absorption carrier:Sepiolite is added in disintegrating machine and crushed, then with diatomite according to 3:2 mass ratio
Mixing, then be ground, it is 100 target minreal matter powder to obtain particle diameter;Maize straw is crushed, then with peanut shell, sawdust
According to 2:1:1 mass ratio mixing, the agricultural wastes powder of 100 mesh is ground into,;By mineral powders and agricultural wastes powder
End is according to 2-3:3-5 mass ratio is added in agitator tank successively, then accounts for twice of weight of agricultural wastes toward addition in agitator tank
The water of amount, 500rpm stirring 20min, is subsequently placed in 80 DEG C of drying, finally crushes and obtains the particle of 20 mesh, produces absorption carrier;
3)Stirring and low temperature drying:Again by mixed bacteria liquid and absorption carrier according to 3-5:5-9 mass ratio is mixed evenly, most
After carry out low temperature drying, drying temperature is 15-20 DEG C, and water content is 8-10wt% after drying, and is produced.
5. handling process according to claim 4, it is characterised in that the bacillus subtilis is CGMCC No:0954;
The bacillusmusilaginosiengineering is CGMCC NO.3769;The Bacillus foecalis alkaligenes is ATCC 31555;The Clostridium papyrosolvens are
ATCC 700395;The Arthrobacter globiformis is CCTCC No:M209015;The pseudomonas aeruginosa ATCC 15442;It is described
Acinetobacter bauamnnii is ATCC 19606.
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110496526A (en) * | 2018-05-17 | 2019-11-26 | 卢松 | The method for absorbing slurry-spraying pelletizing flue gas is purified using resin complexes |
CN110499262A (en) * | 2018-05-17 | 2019-11-26 | 卢松 | Purification absorbs the compound of slurry-spraying pelletizing flue gas |
CN112403255A (en) * | 2020-10-26 | 2021-02-26 | 攀枝花市蓝鼎环保科技有限公司 | Sintering flue gas treatment method |
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DE2809357A1 (en) * | 1978-03-04 | 1979-09-13 | Heinz Hoelter | Power station flue gas filter - consists of soil layers absorbing toxic components |
AT392220B (en) * | 1989-05-10 | 1991-02-25 | Alpine Bau Gmbh | METHOD FOR THE DISPOSAL OF EMISSIONS FROM HOT MIXTURE PLANTS AND EXHAUST GAS CONTROL OF A HOT MIXTURE PLANT |
CN102091599A (en) * | 2010-12-27 | 2011-06-15 | 中国农业大学 | Biomass adsorbent and preparation method thereof |
CN104722183A (en) * | 2015-03-02 | 2015-06-24 | 内蒙古阜丰生物科技有限公司 | Treatment process for smoke gas produced by amino acid preparation process |
CN106000073A (en) * | 2016-06-30 | 2016-10-12 | 内蒙古阜丰生物科技有限公司 | Environmental protection process for treating boiler flue gas |
CN107866203A (en) * | 2016-11-18 | 2018-04-03 | 山东鑫海科技股份有限公司 | A kind of preparation technology of lateritic nickel ore nickel-iron smelting desulphurization denitration dust-removing preparation |
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2016
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DE2809357A1 (en) * | 1978-03-04 | 1979-09-13 | Heinz Hoelter | Power station flue gas filter - consists of soil layers absorbing toxic components |
AT392220B (en) * | 1989-05-10 | 1991-02-25 | Alpine Bau Gmbh | METHOD FOR THE DISPOSAL OF EMISSIONS FROM HOT MIXTURE PLANTS AND EXHAUST GAS CONTROL OF A HOT MIXTURE PLANT |
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CN107866203A (en) * | 2016-11-18 | 2018-04-03 | 山东鑫海科技股份有限公司 | A kind of preparation technology of lateritic nickel ore nickel-iron smelting desulphurization denitration dust-removing preparation |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN110496526A (en) * | 2018-05-17 | 2019-11-26 | 卢松 | The method for absorbing slurry-spraying pelletizing flue gas is purified using resin complexes |
CN110499262A (en) * | 2018-05-17 | 2019-11-26 | 卢松 | Purification absorbs the compound of slurry-spraying pelletizing flue gas |
CN112403255A (en) * | 2020-10-26 | 2021-02-26 | 攀枝花市蓝鼎环保科技有限公司 | Sintering flue gas treatment method |
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