CN108130422A - A kind of method that valuable metal is extracted in steel plant's flue dust - Google Patents
A kind of method that valuable metal is extracted in steel plant's flue dust Download PDFInfo
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- CN108130422A CN108130422A CN201711308932.2A CN201711308932A CN108130422A CN 108130422 A CN108130422 A CN 108130422A CN 201711308932 A CN201711308932 A CN 201711308932A CN 108130422 A CN108130422 A CN 108130422A
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Classifications
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- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C1/00—Magnetic separation
- B03C1/005—Pretreatment specially adapted for magnetic separation
- B03C1/015—Pretreatment specially adapted for magnetic separation by chemical treatment imparting magnetic properties to the material to be separated, e.g. roasting, reduction, oxidation
-
- 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
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/2406—Binding; Briquetting ; Granulating pelletizing
-
- 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
- C22B1/14—Agglomerating; Briquetting; Binding; Granulating
- C22B1/24—Binding; Briquetting ; Granulating
- C22B1/248—Binding; Briquetting ; Granulating of metal scrap or alloys
-
- 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 discloses a kind of method that valuable metal is extracted in steel plant's flue dust, by the blast furnace dust (mud) of iron and steel smelting recycling, soot from steel making (mud) mixes or pressure ball, obtain mixture or sphere, then mixture or sphere are packed into vacuum reduction regenerative furnace, 0.5 6h, the mixture after being restored are kept the temperature in 600 1300 DEG C with the vacuum degree for being less than 100Pa；Mixture is subjected to magnetic separation, obtains smart iron ore.The present invention is by reasonably controlling carbon content and blast furnace dust (mud), the ratio of soot from steel making (mud) in blast furnace dust (mud), and temperature, pressure and time during vacuum reduction, the separation of valuable metals such as zinc, lead and indium and the synthetical recovery of ferriferous oxide can be just realized in vacuum reduction regenerative furnace；Entire technical process of the invention carries out in vacuum reduction regenerative furnace, smaller on personnel and environment influence, and technique and required equipment are simple, safely controllable, easy to operate, can effectively realize the comprehensive reutilization of the secondary resource of valuable metal in steel flue dust.
Description
Technical field
The invention belongs to metallurgical technology fields, and in particular to a kind of method that valuable metal is extracted in steel plant's flue dust.
Background technology
The smoke dust generated in steel production engineering mainly has sintering machine head end electro-precipitating dust, pelletizing dedusting ash, blast furnace gas
Grey (mud) and steel-making dedusting ash (mud) etc..
Blast furnace dust (mud)
In the production process of blast furnace ironmaking, to the solid waste that blast furnace dedusting process generates, dry-method bag-type dust collecting is used
The solid waste of device collecting is known as gas ash, is known as gas mud with the solid waste of wet dust collector device collecting.Blast furnace gas
Grey (mud), is denoted as blast furnace dust/mud, complex chemical composition, in addition to ferro element, also containing the valuable gold such as zinc, lead, indium
Belong to.According to statistics, the occurrence quantity of China's blast furnace dust is ton iron 15-50kg.Patent No. CN201110444928.5,
CN201210369145.X, method application coal, containing Zn scrap returns and blast furnace dust (mud) mix pass through rotary kiln device
Thermal process obtains zinc oxide, and the technique oxide powder and zinc recovery rate is low, and technological process is long, is unable to reach the mesh rich in elemental metals
's.The patent No. 201410330341.5 is by iron content zinc powder dirt, adhesive and coal dust mixed pelletizing, with shaft furnace equipment fire reduction zinc
Element.But the technological process dynamic conditions is poor, and efficiency is low.
Fume from steel making
It is steel-making dedusting mud (ash) that the solid waste that process for making process generates, which has part,.
Steel-making dedusting mud is the ion dust mud contaning that wet method dedusting system generates in steelmaking process；Steel-making dedusting ash is to turn (electricity) stove
Through trap, flue most after through sack cleaner handle trapping.Annual steel mill generates a large amount of steel-making dedusting ash (mud), note
Make steel-making dedusting ash/mud, account for about the 1.5% of output of steel.Containing 40-50% ferro elements and largely in steel-making dedusting ash (mud)
The valuable metals such as zinc, lead, sodium.These solid wastes can deteriorate the working of a furnace and furnace wall dross as blast furnace recycle feed, influence smooth operation of furnace.
Therefore there are related patents about valuable metal is recycled, such as：Patent No. CN201210120674.6 and CN201110199110.1 is special
Profit is using rotary hearth furnace direct-reduction process, and iron can be obtained by not needing to magnetic separation, and harmful substance removal is higher, but later stage recycling is to have
The oxide of valency metal, and it is long to recycle valuable metal technological process.Patent No. CN201210358206.2,
A series of ammonia process techniques such as CN201210357961.9, CN201210357962.3, this method extract technology is complicated and handles work
Skill is complicated, does not determine the feasible scheme of practical application.
Invention content
To solve problems of the prior art, the purpose of the present invention is to provide extract to have in a kind of steel plant's flue dust
The method of valency metal, in this way, the valuable gold such as zinc, lead and indium can be extracted from the flue dust in iron and steel metallurgy smelting process
Belonging to, and using the solid waste of indwelling as the raw material of production steel, this method simplifies the technological process of valuable metal recovery,
Improve recovery rate of iron.
In order to achieve the above object, the technical solution adopted by the present invention is as follows：
A kind of method that valuable metal is extracted in steel plant's flue dust, includes the following steps：
1) steel plant's flue dust is uniformly mixed or ball processed, obtains mixture or sphere, then carry out mixture or sphere
Vacuum reduction after vacuum reduction, obtains the mixing slag containing the ferriferous oxide after valuable metal and reduction；
2) mixing slag for obtaining step 1) carries out magnetic separation, and the ferriferous oxide after reduction is detached with valuable metal.
In step 1), during vacuum reduction, vacuum degree is less than 100Pa；Holding temperature is 600~1300 DEG C；Soaking time is
0.5-6h。
After vacuum reduction, treat that temperature is down to less than 400 DEG C vacuum breakers.
The raw material of steel plant's flue dust is blast furnace dust/mud and steel-making dedusting ash/mud.
It in blast furnace dust/mud, is calculated in mass percent, ferric oxide content exists in 20-48%, zinc oxide content
1.5-15%, in 0.1-10%, carbon content exists oxidation lead content in 10-50%, potassium oxide, silver oxide and indium oxide total content
0.1-10%, other compositions are impurity.
It makes steel in dedusting ash/mud, is calculated in mass percent, ferric oxide content exists in 40-70%, zinc oxide content
0.5-10%, oxidation lead content in 0.1-8%, potassium oxide, sodium oxide molybdena, silver oxide and indium oxide total content in 0.1-10%,
His ingredient is impurity.
In the blast furnace dust/mud and steel-making dedusting ash/mud in metal oxide integral molar quantity and blast furnace dust/mud
The ratio between mole of carbon is (1:12)~(1:0.5).
It is carried out during vacuum reduction using vacuum reduction regenerative furnace, mixture or sphere are first put into crucible, then whole loading
Vacuum reduction regenerative furnace.
In mixing, blast furnace dust/mud is mixed steel plant's flue dust with steel-making dedusting ash/mud using cylindrical mixer
Material.
For steel plant's flue dust in ball processed, obtained sphere diameter is in 20-40mm.
Compared with prior art, the beneficial effects of the present invention are：
The method of extraction valuable metal is by the way that steel plant's flue dust is uniformly mixed or ball processed in steel plant's flue dust of the present invention,
Obtain mixture or sphere, mixture or sphere be then subjected to vacuum reduction, during vacuum reduction, can realize zinc,
The separation of the valuable metals such as lead, potassium and indium and ferriferous oxide are formed, and obtained mixing slag finally are carried out magnetic separation, after reduction
Ferriferous oxide is detached with valuable metal, and isolated ferriferous oxide is recycled；In addition, the entire technical process of the present invention exists
It is carried out in vacuum, smaller on personnel and environment influence, technique and required equipment are simple, safely controllable, easy to operate, can be effectively real
The purpose of extraction valuable metal and metal ferriferous oxide in present steel plant's smoke dust, iron product in the ferriferous oxide that the present invention obtains
Position reaches more than 45%, therefore the method for the present invention simplifies the technological process of valuable metal recovery, improves recovery rate of iron.
Further, during vacuum reduction, vacuum degree is less than 100Pa；Holding temperature is 600~1300 DEG C；Soaking time is
0.5-6h on this condition, can realize separation and the ferriferous oxide of the valuable metals such as steel plant's Zinc from Flue Dust, lead, potassium and indium
Synthetical recovery.
Further, since di-iron trioxide is converted into the temperature of ferroso-ferric oxide at 300-400 DEG C, vacuum reduction terminates
Afterwards, treat that temperature is down to less than 400 DEG C vacuum breakers, causing final product, ferroso-ferric oxide is conducive to magnetic separation for ferroso-ferric oxide；Such as
Fruit steel flue dust contains biological cycle, and vacuum breaker temperature is controlled at 100 DEG C hereinafter, preventing from exploding in vacuum chamber.
Further, blast furnace dust/mud and steel-making dedusting ash/mud in metal oxide integral molar quantity and blast furnace gas
The ratio between mole of carbon is (1 in ash/mud:12)~(1:0.5), on this condition, can realize steel plant's Zinc from Flue Dust, lead,
The separation of the valuable metals such as potassium and indium and the synthetical recovery of ferriferous oxide.
Further, for steel plant's flue dust in ball processed, obtained sphere diameter 20-40mm enables to reduction reaction
Occur completely, to ensure that the extraction effect of valuable metal.
Specific embodiment
The present invention is described in further details with reference to embodiment.
It is of the invention to be with the larger blast furnace dust (mud) of yield in steel plant's smoke dust and steel-making dedusting ash (mud) mainly
Example.
The technical solution adopted by the present invention includes the following steps：
1) blast furnace dust/mud with soot from steel making/mud is mixed or pressure ball, obtains mixture or sphere, it then will be mixed
It closes material or sphere is packed into vacuum reduction regenerative furnace, to be less than the vacuum degree of 100Pa, 0.5-6h, heat preservation are kept the temperature in 600-1300 DEG C
Terminate, treat that furnace charge is cooled to 400 DEG C hereinafter, vacuum breaker, and collect the mixing containing the ferriferous oxide after valuable metal and reduction
Slag；Wherein, in mixture or sphere, metal oxide integral molar quantity and blast furnace in blast furnace dust/mud and steel-making dedusting ash/mud
The ratio between mole of carbon is (1 in gas ash/mud:12)~(1:0.5)；
2) solid waste of indwelling after reduction is subjected to magnetic separation, obtains metallic iron.
Ferric oxide content is in 20-48% in blast furnace dust/mud used in the present invention, and zinc oxide content is in 1.5-
15%, oxidation lead content in 0.1-10%, carbon content in 10-50%, the valuable metals such as potassium oxide, silver oxide and indium oxide it is total
For content in 0.1-10%, other compositions are impurity；Carbon in blast furnace dust/mud is coal dust, and coal dust is as reducing agent；
Ferric oxide content contains in 40-70%, zinc oxide content in 0.5-10%, lead oxide in soot from steel making/mud
It measures in 0.1-8%, the total content of the valuable metals such as potassium oxide, sodium oxide molybdena, silver oxide and indium oxide is in 0.1-10%, other compositions
For impurity.
Batch mixing is carried out using cylindrical mixer when blast furnace dust/mud is mixed with soot from steel making/mud；Blast furnace dust/
When mud is with soot from steel making/mud pressure ball, the sphere of diameter 20-40mm is made；Mixture or sphere are first put into crucible, then whole
It is packed into vacuum reduction regenerative furnace.
The present invention is by reasonably controlling blast furnace dust/mud with making steel the ratio of dedusting ash/mud and in vacuum reduction
Temperature, pressure and time in the process can just realize the separation of the valuable metals such as zinc, lead, potassium and indium in vacuum reduction regenerative furnace
And the synthetical recovery of ferriferous oxide；In addition, the entire technical process of the present invention carries out in a vacuum, personnel and environment are influenced compared with
Small, technique and required equipment are simple, safely controllable, easy to operate, can effectively realize and extract valuable metal in steel smoke dust
With metal ferriferous oxide.
Embodiment 1：
The present embodiment is achieved by the steps of：
1) by the mixing sphere of blast furnace dust and steel-making dedusting ash pressure ball to a diameter of 35mm, wherein, the height added in
The ratio between mole of coal dust is 1 in the integral molar quantity and blast furnace dust of metal oxide in stove gas ash and steel-making dedusting ash:
1；The mass content of fixed carbon is 20% in the blast furnace dust added in；Then mixing sphere is put into crucible, then whole
Vacuum reduction regenerative furnace is packed into, 4h is kept the temperature in 600 DEG C with the vacuum degree of 90Pa, after heat preservation, it is 300 to be cooled to in-furnace temperature
DEG C when vacuum breaker, take out crucible；
2) mixture after reduction is subjected to magnetic separation, obtains smart iron ore, so as to by the valuable metals such as lead, zinc, indium and silver from
It is separated in mixture after reduction.
Embodiment 2：
The present embodiment is achieved by the steps of：
1) blast furnace dust and steel-making dedusting mud are depressed into the mixing sphere of a diameter of 20mm, wherein, the blast furnace added in
Gas ash, the metal oxide for making steel dedusting mud integral molar quantity and blast furnace dust in the ratio between the mole of coal dust be 6:1；Institute
The mass content of fixed carbon is 25% in the blast furnace dust of addition；Then mixing sphere is put into crucible, then whole loading
Vacuum reduction regenerative furnace keeps the temperature 0.5h with the vacuum degree of 50Pa in 1200 DEG C, and after heat preservation, it is 200 to be cooled to in-furnace temperature
DEG C when vacuum breaker, take out crucible；
2) mixture after reduction is subjected to magnetic separation, obtains smart iron ore, so as to by the valuable metals such as lead, zinc, indium and silver from
It is separated in mixture after reduction.
Embodiment 3：
The present embodiment is achieved by the steps of：
1) blast furnace gas mud and steel-making dedusting ash are depressed into the mixing sphere of a diameter of 25mm, wherein, the blast furnace added in
The ratio between mole of coal dust is 12 in the integral molar quantity and blast furnace gas mud of gas mud and the metal oxide of steel-making dedusting ash:1；
The mass content of fixed carbon is 35% in the blast furnace gas mud added in；Then mixing sphere is put into corundum crucible, then whole
Body is packed into vacuum reduction regenerative furnace, keeps the temperature 2h in 1000 DEG C with the vacuum degree of 70Pa, after heat preservation, being cooled to in-furnace temperature is
Vacuum breaker at 150 DEG C takes out crucible；
2) mixture after reduction is subjected to magnetic separation, obtains smart iron ore, so as to by the valuable metals such as lead, zinc, indium and silver from
It is separated in mixture after reduction.
Embodiment 4：
The present embodiment is achieved by the steps of：
1) blast furnace gas mud and steel-making dedusting mud are depressed into the mixing sphere of a diameter of 30mm, wherein, the blast furnace added in
The ratio between the integral molar quantity of the metal oxide of gas mud and steel-making dedusting mud and the mole of coal dust of blast furnace gas mud are 12:1；
The mass content of fixed carbon is 50% in the blast furnace gas mud added in；Then mixing sphere is put into corundum crucible, then whole
Body is packed into vacuum reduction regenerative furnace, keeps the temperature 3h in 900 DEG C with the vacuum degree of 80Pa, after heat preservation, being cooled to in-furnace temperature is
Vacuum breaker at 400 DEG C takes out crucible；
2) mixture after reduction is subjected to magnetic separation, obtains smart iron ore, so as to by the valuable metals such as lead, zinc, indium and silver from
It is separated in mixture after reduction.
Embodiment 5：
The present embodiment is achieved by the steps of：
1) blast furnace gas mud and steel-making dedusting ash are depressed into the mixing sphere of a diameter of 40mm, wherein, the blast furnace added in
Gas mud and make steel dedusting ash metal oxide integral molar quantity and blast furnace gas mud in the ratio between mole of coal dust be
0.5:1；The mass content of fixed carbon is 10% in the blast furnace gas mud added in；Then mixing sphere is put into corundum crucible
In, then whole loading vacuum reduction regenerative furnace, 2h are kept the temperature in 700 DEG C with the vacuum degree of 30Pa, after heat preservation, are cooled in stove
Vacuum breaker when temperature is 100 DEG C takes out crucible；
2) mixture after reduction is subjected to magnetic separation, obtains smart iron ore, so as to by the valuable metals such as lead, zinc, indium and silver from
It is separated in mixture after reduction.
Embodiment 6：
The present embodiment is achieved by the steps of：
1) blast furnace dust and steel-making dedusting ash are subjected to batch mixing with cylindrical mixer, wherein, the blast furnace gas added in
The ratio between mole of coal dust in the integral molar quantity and blast furnace dust of ash and the metal oxide of steel-making dedusting ash is 0.5:1；
The mass content of fixed carbon is 10% in the blast furnace dust added in；Then mixture is put into corundum crucible, then whole dress
Enter vacuum reduction regenerative furnace, 6h is kept the temperature in 700 DEG C with the vacuum degree of 95Pa, after heat preservation, it is 100 DEG C to be cooled to in-furnace temperature
When vacuum breaker, take out crucible；
2) mixture after reduction is subjected to magnetic separation, obtains smart iron ore, so as to by the valuable metals such as lead, zinc, indium and silver from
It is separated in mixture after reduction.
Embodiment 7：
The present embodiment is achieved by the steps of：
1) blast furnace gas mud is depressed into the mixing sphere of a diameter of 40mm with steel-making dedusting mud, wherein, the blast furnace added in
The ratio between coal dust mole in gas mud and fume from steel making mud in the integral molar quantity and blast furnace gas mud of metal oxide is 1:10；
The mass content of fixed carbon is 30% in the blast furnace gas mud added in；Then mixing sphere is put into corundum crucible and be reloaded into
With the vacuum degree of 10Pa, 0.8h are kept the temperature in 700 DEG C for vacuum distillation furnace, after heat preservation, when to be cooled to in-furnace temperature be 100 DEG C
Vacuum breaker takes out the mixture after reduction；
2) mixture after reduction is subjected to magnetic separation, obtains smart iron ore, so as to by the valuable metals such as lead, zinc, indium and silver from
It is separated in mixture after reduction.
In Examples 1 to 7, the rate of recovery of valuable metal is as shown in table 1 in steel plant's flue dust：
Table 1
Claims (10)
1. the method for valuable metal is extracted in a kind of steel plant's flue dust, which is characterized in that include the following steps：
1) steel plant's flue dust is uniformly mixed or ball processed, obtains mixture or sphere, mixture or sphere are then subjected to vacuum
Reduction after vacuum reduction, obtains the mixing slag containing the ferriferous oxide after valuable metal and reduction；
2) mixing slag for obtaining step 1) carries out magnetic separation, and the ferriferous oxide after reduction is detached with valuable metal.
2. according to the method described in claim 1, it is characterized in that, in step 1), during vacuum reduction, vacuum degree is less than 100Pa；
Holding temperature is 600~1300 DEG C；Soaking time is 0.5-6h.
3. according to the method described in claim 1, it is characterized in that, after vacuum reduction, when temperature is down to below 400 DEG C
Vacuum breaker.
4. according to the method described in claim 1, it is characterized in that, the raw material of steel plant's flue dust is blast furnace dust/mud
With steel-making dedusting ash/mud.
5. according to the method described in claim 4, it is characterized in that, in blast furnace dust/mud, it is calculated in mass percent, three oxygen
Change two iron contents in 20-48%, zinc oxide content is in 1.5-15%, and oxidation lead content is in 0.1-10%, and carbon content is in 10-
50%, in 0.1-10%, other compositions are impurity for potassium oxide, silver oxide and indium oxide total content.
6. according to the method described in claim 4, it is characterized in that, in steel-making dedusting ash/mud, it is calculated in mass percent, three oxygen
Change two iron contents in 40-70%, zinc oxide content is in 0.5-10%, and oxidation lead content is in 0.1-8%, potassium oxide, sodium oxide molybdena, oxygen
Change silver and indium oxide total content in 0.1-10%, other compositions are impurity.
7. according to the method described in claim 4-6 any one, which is characterized in that the blast furnace dust/mud and steel-making remove
The ratio between metal oxide integral molar quantity and the mole of carbon in blast furnace dust/mud are (1 in dust/mud:12)~(1:0.5).
8. according to the method described in claim 1, it is characterized in that, carried out using vacuum reduction regenerative furnace during vacuum reduction, mix
It closes material or sphere is first put into crucible, then whole loading vacuum reduction regenerative furnace.
9. according to the method described in claim 1, it is characterized in that, steel plant's flue dust mixing when, blast furnace dust/mud with refining
Steel dedusting ash/mud carries out batch mixing using cylindrical mixer.
10. according to the method described in claim 1, it is characterized in that, steel plant's flue dust in ball processed, obtained sphere diameter
For 20-40mm.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110184471A (en) * | 2019-07-15 | 2019-08-30 | 安徽工业大学 | A kind of method of steel ash synthetical recovery enrichment multiple elements gold and silver noble metal |
| WO2020107669A1 (en) * | 2018-11-26 | 2020-06-04 | 贵州大学 | Method for recycling zinc by comprehensively utilizing steelmaking dust |
| CN114150156A (en) * | 2021-11-30 | 2022-03-08 | 西安建筑科技大学 | Process for extracting zinc from low-grade zinc-containing dust and preparing nano zinc oxide |
| CN114480841A (en) * | 2022-01-27 | 2022-05-13 | 中钢集团马鞍山矿山研究总院股份有限公司 | Electric furnace dust removal ash and full-quantitative and high-value utilization method of iron extraction tailings thereof |
| CN114774681A (en) * | 2022-04-26 | 2022-07-22 | 东北大学 | Recycling method of zinc-containing soot |
| CN115679097A (en) * | 2022-11-19 | 2023-02-03 | 新源县渣宝环保技术有限公司 | Method for recycling iron-making gas ash by using converter slag and refined dedusting ash |
| CN114480841B (en) * | 2022-01-27 | 2024-04-19 | 中钢集团马鞍山矿山研究总院股份有限公司 | Electric furnace dust and iron extraction tailings full quantization and high value utilization method thereof |
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| GB2588364A (en) * | 2018-11-26 | 2021-04-21 | Univ Guizhou | Method for recycling zinc by comprehensively utilizing steelmaking dust |
| GB2588364B (en) * | 2018-11-26 | 2022-04-20 | Univ Guizhou | Method for comprehensive utilization and recovery of zinc from steel-making dust |
| CN110184471A (en) * | 2019-07-15 | 2019-08-30 | 安徽工业大学 | A kind of method of steel ash synthetical recovery enrichment multiple elements gold and silver noble metal |
| CN114150156A (en) * | 2021-11-30 | 2022-03-08 | 西安建筑科技大学 | Process for extracting zinc from low-grade zinc-containing dust and preparing nano zinc oxide |
| CN114150156B (en) * | 2021-11-30 | 2023-10-13 | 西安建筑科技大学 | Low-grade zinc-containing dust zinc extraction and nano zinc oxide preparation process |
| CN114480841A (en) * | 2022-01-27 | 2022-05-13 | 中钢集团马鞍山矿山研究总院股份有限公司 | Electric furnace dust removal ash and full-quantitative and high-value utilization method of iron extraction tailings thereof |
| CN114480841B (en) * | 2022-01-27 | 2024-04-19 | 中钢集团马鞍山矿山研究总院股份有限公司 | Electric furnace dust and iron extraction tailings full quantization and high value utilization method thereof |
| CN114774681A (en) * | 2022-04-26 | 2022-07-22 | 东北大学 | Recycling method of zinc-containing soot |
| CN114774681B (en) * | 2022-04-26 | 2024-02-13 | 东北大学 | Recycling method of zinc-containing ash |
| CN115679097A (en) * | 2022-11-19 | 2023-02-03 | 新源县渣宝环保技术有限公司 | Method for recycling iron-making gas ash by using converter slag and refined dedusting ash |
| CN115679097B (en) * | 2022-11-19 | 2023-11-17 | 新源县渣宝环保技术有限公司 | Method for recycling ironmaking gas ash by using converter slag and refining dust |
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Application publication date: 20180608 |