CN107287367A - A kind of method that utilization iron red mud reclaims iron - Google Patents
A kind of method that utilization iron red mud reclaims iron Download PDFInfo
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- CN107287367A CN107287367A CN201610196955.8A CN201610196955A CN107287367A CN 107287367 A CN107287367 A CN 107287367A CN 201610196955 A CN201610196955 A CN 201610196955A CN 107287367 A CN107287367 A CN 107287367A
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- red mud
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- slag
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
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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
- 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
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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
- C22B5/00—General methods of reducing to metals
- C22B5/02—Dry methods smelting of sulfides or formation of mattes
- C22B5/10—Dry methods smelting of sulfides or formation of mattes by solid carbonaceous reducing agents
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
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Abstract
The present invention discloses a kind of method that utilization iron red mud reclaims iron, and iron red mud, reducing agent, additive are uniformly mixed into 10~30mm red mud agglomerates；Additive mass percent is 3 10wt% in composition, and reasonably combined iron red mud is matched with reducing agent, carbon in red mud agglomerate is met mol ratio with ferriferous oxide for C/O=1.2~1.5；The reducing agent is one kind in coal dust, coke powder, coking dedusting ash；The additive is ferrous acid calcium powder；Red mud agglomerate is added in slag ladle slack tank in advance, then again high-temperature slag is injected when slagging tap, is post-processed after 10~30min of reaction using general slag handling technology, then magnetic separation processing is carried out by slag sluicing system to cooling slag.
Description
Technical field
The invention belongs to metallurgical technology field, it is related to the processing method that a kind of red mud reclaims iron, it is more particularly to a kind of to utilize high temperature smelting
The method that golden slag treatment iron red mud reclaims iron.
Background technology
Red mud is the solid waste of alumina producer production alumina process China and foreign countries row, and typically often production 1t aluminum oxide is about produced
0.8~1.8t red muds, its comprehensive utilization ratio is very low, and the red mud storage of China has had reached t more than 200,000,000 according to statistics, both takes
A large amount of soils, cause environmental pollution and potential safety hazard again.Containing the valuable element such as more iron, aluminium in red mud, especially with visiing
The red mud of outer row after ear method production aluminum oxide, generally with higher iron content (Fe2O3Content 30%~70%), thus it is this
The recycling value of iron red mud is high, and first choice is to reclaim iron therein, and effectively processing iron red mud both mitigates environmental protection pressure
Economic benefit can be obtained again.But because the alkali metal such as sodium and alumina content are exceeded in iron red mud, typically it cannot be directly used to
Conventional blast furnace ironmaking, still can not largely be utilized in the industrial production at present.
It is main that iron therein is reclaimed using modes such as reduction roasting and magnetic separation in existing iron red mud processing method, such as it is Chinese
Patent CN102839249A《A kind of method that rotary hearth furnace direct-reduction iron red mud produces Iron concentrate》、CN102628097A
《A kind of method that fluid bed reduction magnetization treatment red mud prepares Iron concentrate》、CN102626670A《A kind of rotary kiln reduces magnetic
Change the method that processing red mud prepares Iron concentrate》Red mud is entered for main technique etc. rotary hearth furnace, fluid bed, rotary kiln etc. is respectively adopted
Row reduction roasting carries out magnetic separation to reclaim iron again；CN102851425A《A kind of iron red mud iron, aluminium, sodium efficiently separate comprehensive
Close the method utilized》First iron is reclaimed using rotary hearth furnace direct-reduction through peroxide coal iron-bath molten stove slag sluicing system again；
CN102816880A《A kind of method that iron red mud ironmaking proposes aluminium comprehensive utilization》Blast furnace is used for main technique, it is desirable to red mud
Mini-pellets composite sinter or pellet are prepared, itself and coke are then entered into blast furnace being not less than 400 DEG C of temperature lower leaf hot chargings,
Iron is reclaimed using the super oxygen method that even total oxygen air blast is smelted；CN102134646A《It is straight using Aluminum iron red mud as raw material
Connect the method for preparing metallic iron and aluminium concentrate》Using a variety of skills such as Ultrafine Grinding technology, the fine reduction techniques of CO, the separation of non-melt
Art is first reduced carries out magnetic separation recovery iron again；In addition with such as CN102329911A《Low-grade complex refractory ore Molten Slag Method is manufactured
The technique of granulated iron》Red mud will be reduced into sponge iron or granulated iron etc. to reclaim iron etc. using reducing process such as rotary hearth furnaces Deng some patents
Deng.
In current iron red mud processing method, increase special arrangement or equipment are mostly needed, process is more, causes technological operation
Complicate；Or control condition is strict, high energy consumption, the rate of recovery are low, causes cost to increase, it is difficult to realize that industrial production on a large scale should
With.
On the other hand, iron and steel enterprise can produce substantial amounts of high-temperature slag in smelting process, mainly include blast furnace slag and slag, temperature
Degree is at 1450 DEG C~1650 DEG C, although it is handled, and technique for applying is numerous, but Exposure degree utilizes the problem for being still at present metallurgy industry.
The content of the invention
The technical problems to be solved by the invention are to provide a kind of method that utilization pyrometallurgy slag treatment iron red mud reclaims iron,
Under conditions of it need not increase special arrangement or equipment, based on traditional iron and steel enterprise's existing procedure technique, realize a kind of low cost and
The processing iron red mud of simple and effective and the processing method for reclaiming wherein iron.
The present invention seeks to what is realized by following technical scheme：
1. a kind of method that utilization iron red mud reclaims iron, comprises the following steps：
(1) iron red mud, reducing agent, additive are uniformly mixed and made into 10~30mm red mud agglomerates by.It is characterized in that：Match somebody with somebody
Additive mass percent is 3-10wt% in material composition, and reasonably combined iron red mud is matched with reducing agent, made in red mud agglomerate
Carbon meets mol ratio for C/O=1.2~1.5 with ferriferous oxide.The reducing agent includes one in coal dust, coke powder, coking dedusting ash
Kind, its fixed carbon weight/mass percentage composition is more than 70%, and sulphur weight/mass percentage composition is less than 1%；The additive is ferrous acid calcium powder,
Its calcium ferrite weight/mass percentage composition is more than 95%.
(2) red mud agglomerate is added in slag ladle slack tank by advance, is then again injected high-temperature slag when slagging tap, is made full use of height
Warm slag heat, makes red mud agglomerate realize that Flashmelt is reduced under slag bath environment.Ferriferous oxide in red mud agglomerate matches somebody with somebody carbon by interior
Be reduced into molten iron, the impurity such as aluminum oxide is fused among clinker, the flue dust that the alkali metal of partial reduction volatilization and reaction are produced by
Cleaner is focused on.High-temperature slag includes slag or blast furnace slag, and its temperature is 1450~1650 DEG C.Red mud agglomerate addition
It is calculated as being no more than 50kg/t by slag per ton.
(3) is post-processed after reacting 10~30min using general slag handling technology, then carries out magnetic separation processing to cooling slag
By slag sluicing system.
2. the method that heretofore described utilization iron red mud reclaims iron, it is characterised in that iron red mud described in step (1)
Main chemical compositions are：Fe2O3For 30~70wt%, Al2O3For 5~30wt%, Na2O is 0~10wt%, and remaining is SiO2、
CaO and other impurity.
3. the method that heretofore described utilization iron red mud reclaims iron, it is characterised in that red mud agglomerate is described in step (1)
After above-mentioned iron red mud, reducing agent and additive are uniformly mixed by a certain percentage, the 10~30mm of diameter suppressed using ball press
Agglomerate.Specially first mixed material is fully crushed and rolled, then puts it into and mixed once is carried out in batch mixer, treat material
Injection suitable quantity of water carries out secondary mixing after well mixed, sends into ball press final mixed material after being well mixed, is pressed into
10~30mm agglomerates, after standby after agglomerate drying to moisture≤3%.
4. the method that heretofore described utilization iron red mud reclaims iron, it is characterised in that the slag treatment described in step (3)
Technique includes the universal mature techniques such as Water Quenching technique, hot application handling process, the hot vexed handling process of slag.
The present invention is the high-temperature slag processing red mud using iron and steel enterprise, the sensible heat of slag is taken full advantage of, by it to realize
The melting and reducing of red mud agglomerate, and high efficiente callback iron therein.
Certain carbonaceous reducing agent is incorporated in iron red mud, while providing sufficient heat, ferriferous oxide using high-temperature slag
With carbon metallic iron is reduced into by interior, and further carburizing is molten into molten iron.Under 1450~1650 DEG C of high temperature sludge bath environment,
The thermodynamical reaction condition of red mud agglomerate is good, while impact agitaion is formed during slag injection, and ferriferous oxide is matched somebody with somebody with interior
Carbon reaction produces CO gases and constantly escaped, and can also develop on a large scale greatly gas-slag-gold interface, the dynamic conditions of reaction is also significantly changed
It is kind, realize the Flashmelt reduction of red mud agglomerate.
Because slag also contains a small amount of ferriferous oxide in itself, may react the certain carbon of consumption with carbon, while in red mud
Alkali metal compound also has part to be reacted with carbon under the high temperature conditions, therefore carbon-to-oxygen ratio (C/O) should be controlled to make the interior suitable with carbon of agglomerate
Work as excess, experiment shows under the range of condition of (C/O)=1.2~1.5, red mud agglomerate of the present invention can sufficient melting and reducing.
A certain amount of ferrous acid calcium additive is added in red mud agglomerate be to promote fusion reduction reaction, improve slag sluicing system efficiency, by
It is relatively low in the fusing point of calcium ferrite, liquid phase is formed in more than 1100 degree, the mass transfer condition of reaction, and calcium ferrite liquid can be improved rapidly
Mutually can occur eutectic reaction with dystectic CaO etc., form low melting point, slag phase meltdown property is improved, due to quick
The low melting point slag of formation and the mobility difference of reduced iron are larger, so as to realize that the efficiency of slag sluicing system is improved, accelerate melting and reducing
Reaction, finally improves iron recovery.Although adding appropriate fluorite (CaF2) additive can also play similar effect, but due to
Fluorite can cause Eroded, and influence environment to refractory material and equipment, therefore ferrous acid calcium additive, examination are used in the present invention
Test and show that 3-10wt% addition can ensure preferable reaction effect.
Red mud agglomerate addition is calculated as being no more than 50kg by slag per ton, it is ensured that the abundant completion of reaction.By 10~30min
Abundant reaction, ferriferous oxide in red mud agglomerate with carbon is reduced into molten iron by interior, and the impurity such as aluminum oxide is fused to slag, alkali
Metallic compound part enters slag, be partly reduced evaporate with produce flue dust focused on by cleaner.Then it is sharp
Subsequent treatment is carried out with universal mature slag handling technology, such as slag uses hot application handling process, hot vexed handling process, blast furnace
Slag can use Water Quenching technique, then by magnetic separation by slag sluicing system, the iron recovery completed in the recovery of iron, red mud reaches
More than 90%.
The inventive method has the following advantages that compared with prior art：
1. handling iron red mud using the inventive method, process flow is short, simple and easy to do, is not required to increase special arrangement or equipment,
All of iron and steel enterprise's existing device；
2. handling iron red mud using the inventive method, high-temperature slag heat is taken full advantage of, and is formed and stirs when slag injects
Action is used, while ferriferous oxide is constantly escaped with the interior CO gases for reacting generation with carbon, can develop the interface of gas-slag-gold,
Make red mud agglomerate all very good in the thermodynamics of reactions condition and dynamic conditions that slag is bathed under environment, so as to realize Flashmelt also
Iron point in original, high efficiente callback red mud, iron recovery reaches more than 90%；
3. handling iron red mud using the inventive method, the large-scale comprehensive that iron red mud can be achieved is utilized, and can not only mitigate red mud
The environment that causes, safety problem, while the substantial amounts of iron resource of recoverable.
Figure of description
Fig. 1 is the inventive method process flow diagram.
Embodiment
Illustrated with reference to specific embodiment：
Embodiment 1
Iron red mud, coke powder, ferrous acid calcium powder are mixed evenly in proportion using batch mixer, are then made using ball press
10~30mm red mud agglomerates, after standby after agglomerate drying to moisture≤3%.Wherein the proportioning of ferrous acid calcium powder is 3.5wt%, remaining
For iron red mud and coal dust, fixation carbon content and the oxygen content mol ratio of ferriferous oxide in iron red mud in coal dust are
C/O=1.25.The chemical composition of iron red mud is mainly in the present embodiment：Fe2O3For 65.2wt%, Al2O3For 8.1wt%,
Na2O is 2.4wt%, and remaining is SiO2, other impurity such as CaO；The fixation carbon content of coke powder is 85.6wt%, sulfur content
For 0.9wt%；Ferrous acid calcium content is 95.5wt% in additive.
Load 1.5t red mud agglomerates in the slag ladle slack tank (the dress quantity of slag about 32t) in steel-making work area, again note steel-smelting clinker when slagging tap
Enter, bathe environment in 1600 DEG C or so of high temperature sludges and slag is injected under the impact to be formed, agitaion, red mud agglomerate is realized fast
The melting and reducing of speed, ferriferous oxide is reduced into molten iron, and aluminum oxide and other impurity are fused in slag, and partial reduction is volatilized
Alkali metal and reaction produce flue dust focused on by cleaner, reaction 15min after, by normal slag post-process work
Slag sluicing system is completed the recovery of iron by skill using the vexed processing of heat, then by magnetic separation, and sampled analysis is calculated under the technical conditions
Iron recovery in red mud is more than 92.1%.
Embodiment 2
Iron red mud, coal dust, ferrous acid calcium powder are mixed evenly in proportion using batch mixer, are then made using ball press
10~30mm red mud agglomerates, after standby after agglomerate drying to moisture≤3%.Wherein the proportioning of ferrous acid calcium powder is 6.7wt%, remaining
For iron red mud and coal dust, fixation carbon content and the oxygen content mol ratio of ferriferous oxide in iron red mud in coal dust are
C/O=1.45.The chemical composition of iron red mud is mainly in the present embodiment：Fe2O3For 35.3wt%, Al2O3For 26.1wt%,
Na2O is 9.2wt%, and remaining is SiO2, other impurity such as CaO；The fixation carbon content of coal dust is 71.2wt%, sulfur content
For 0.5wt%；Ferrous acid calcium content is 95.2wt% in additive.
Red mud agglomerate is previously charged into by the 5.0% of the quantity of slag in the slag ladle slack tank in steel-making work area, again steel-smelting clinker is injected when slagging tap,
Environment is bathed in 1600 DEG C or so of high temperature sludges and slag is injected under the impact to be formed, agitaion, and red mud agglomerate is realized quick
Melting and reducing, ferriferous oxide is reduced into molten iron, and aluminum oxide and other impurity are fused in slag, the alkali that partial reduction is volatilized
The flue dust that metal is produced with reaction is focused on by cleaner, after reaction 25min, is adopted by normal slag aftertreatment technology
With the vexed processing of heat, then by magnetic separation by slag sluicing system, the recovery of completion iron, sampled analysis calculates red mud under the technical conditions
In iron recovery be more than 93.2%.
Embodiment 3
Iron red mud, coking dedusting ash, ferrous acid calcium powder are mixed evenly in proportion using batch mixer, then using ball press
10~30mm red mud agglomerates are made, after standby after agglomerate drying to moisture≤3%.Wherein the proportioning of ferrous acid calcium powder is 9.5wt%,
Remaining is the fixation carbon content and the oxygen content of ferriferous oxide in iron red mud in iron red mud and coking dedusting ash, coking dedusting ash
Mol ratio is C/O=1.3.The chemical composition of iron red mud is mainly in the present embodiment：Fe2O3For 52.4wt%, Al2O3For
17.9wt%, Na2O is 5.2wt%, and remaining is SiO2, other impurity such as CaO；The fixation carbon content of coking dedusting ash is
82.2wt%, sulfur content is 0.7wt%；Ferrous acid calcium content is 96.1wt% in additive.
Red mud agglomerate is previously charged into by the 4.0% of the quantity of slag in the slag ladle slack tank in ironmaking work area, again blast furnace cinder is injected when slagging tap,
Environment is bathed in 1500 DEG C or so of high temperature sludges and slag is injected under the impact to be formed, agitaion, and red mud agglomerate is realized quick
Melting and reducing, ferriferous oxide is reduced into molten iron, and aluminum oxide and other impurity are fused in slag, the alkali that partial reduction is volatilized
The flue dust that metal is produced with reaction is focused on by cleaner, and after reaction 20min, slag is handled using water quenching technology,
Again by magnetic separation by slag sluicing system after cooling, the recovery of iron is completed, sampled analysis calculates the iron in red mud under the technical conditions
The rate of recovery is more than 90.5%.
Claims (2)
1. a kind of method that utilization iron red mud reclaims iron, it is characterised in that comprise the following steps：
(1) iron red mud, reducing agent, additive are uniformly mixed and made into 10~30mm red mud agglomerates by；Added in composition
Agent mass percent is 3-10wt%, and reasonably combined iron red mud is matched with reducing agent, makes carbon and ferriferous oxide in red mud agglomerate
Mol ratio is met for C/O=1.2~1.5；The reducing agent is one kind in coal dust, coke powder, coking dedusting ash, and it fixes carbonaceous
Measure percentage composition and be more than 70%, sulphur weight/mass percentage composition is less than 1%；The additive is ferrous acid calcium powder, its calcium ferrite quality hundred
Content is divided to be more than 95%；
(2) red mud agglomerate is added in slag ladle slack tank by advance, then again injects high-temperature slag when slagging tap, and high-temperature slag is
Slag or blast furnace slag, its temperature are 1450~1650 DEG C；Red mud agglomerate addition is calculated as being no more than 50kg/t by slag per ton；
(3) is post-processed after reacting 10~30min using general slag handling technology, then carries out magnetic separation processing to cooling slag
By slag sluicing system.
2. the method for iron is reclaimed using iron red mud according to claim 1, it is characterised in that：Described in step (1)
The chemical composition of iron red mud is：Fe2O3For 30~70wt%, Al2O3For 5~30wt%, Na2O is 0~10wt%, its
Remaining is SiO2, CaO and other impurity.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107739819A (en) * | 2017-11-15 | 2018-02-27 | 武汉科思瑞迪科技有限公司 | A kind of method of coal base shaft furnace process processing iron content red mud |
| CN109020231A (en) * | 2018-10-11 | 2018-12-18 | 清华大学 | A method of preparing alloyed iron and devitrified glass |
| CN109554535A (en) * | 2019-01-11 | 2019-04-02 | 江苏新世寰宇再生资源科技有限公司 | A method of iron is recycled using red mud and copper ashes tailings comprehensive |
| CN109576487A (en) * | 2019-01-11 | 2019-04-05 | 江苏荣鑫伟业新材料股份有限公司 | A method of iron is recycled using red mud and dedusting ash mixing reduction roasting magnetic separation |
| CN109970368A (en) * | 2019-04-11 | 2019-07-05 | 东北大学 | A kind of method that the melting and reducing dealkalize of iron red mud vortex mentions the direct cement of iron |
| CN111763787A (en) * | 2020-07-03 | 2020-10-13 | 北京金熔节能环保科技有限公司 | System and method for reducing metal oxide by using high-temperature molten slag and regulating and controlling slag temperature |
| CN111850214A (en) * | 2020-07-23 | 2020-10-30 | 北京中科金腾科技有限公司 | Novel process for recycling reaction resources of steel slag and red mud and application |
| CN112795717A (en) * | 2020-12-28 | 2021-05-14 | 通辽市君致清科技有限公司 | Method for reducing iron scale by using waste heat of steel slag |
| CN112877489A (en) * | 2021-01-12 | 2021-06-01 | 广东工业大学 | Method for recycling red mud iron by using cathode carbon |
| CN114134276A (en) * | 2021-11-25 | 2022-03-04 | 中冶南方都市环保工程技术股份有限公司 | Steel slag-red mud resource recycling method |
| CN116949283A (en) * | 2023-06-20 | 2023-10-27 | 青岛盈坤源矿业科技有限公司 | Comprehensive utilization method of lead-zinc volatile residues and red mud |
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| CN102839249A (en) * | 2012-08-03 | 2012-12-26 | 莱芜钢铁集团有限公司 | Method for producing iron fine powder by directly reducing high-iron red mud with rotary hearth furnace |
| CN102851425A (en) * | 2012-08-17 | 2013-01-02 | 东北大学 | Method for high-efficiency separation and comprehensive utilization of iron, aluminum and sodium in high-iron red mud |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107739819A (en) * | 2017-11-15 | 2018-02-27 | 武汉科思瑞迪科技有限公司 | A kind of method of coal base shaft furnace process processing iron content red mud |
| CN109020231A (en) * | 2018-10-11 | 2018-12-18 | 清华大学 | A method of preparing alloyed iron and devitrified glass |
| CN109020231B (en) * | 2018-10-11 | 2020-05-05 | 清华大学 | Method for preparing alloy iron and microcrystalline glass |
| CN109554535A (en) * | 2019-01-11 | 2019-04-02 | 江苏新世寰宇再生资源科技有限公司 | A method of iron is recycled using red mud and copper ashes tailings comprehensive |
| CN109576487A (en) * | 2019-01-11 | 2019-04-05 | 江苏荣鑫伟业新材料股份有限公司 | A method of iron is recycled using red mud and dedusting ash mixing reduction roasting magnetic separation |
| CN109970368A (en) * | 2019-04-11 | 2019-07-05 | 东北大学 | A kind of method that the melting and reducing dealkalize of iron red mud vortex mentions the direct cement of iron |
| CN111763787A (en) * | 2020-07-03 | 2020-10-13 | 北京金熔节能环保科技有限公司 | System and method for reducing metal oxide by using high-temperature molten slag and regulating and controlling slag temperature |
| CN111850214A (en) * | 2020-07-23 | 2020-10-30 | 北京中科金腾科技有限公司 | Novel process for recycling reaction resources of steel slag and red mud and application |
| CN112795717A (en) * | 2020-12-28 | 2021-05-14 | 通辽市君致清科技有限公司 | Method for reducing iron scale by using waste heat of steel slag |
| CN112877489A (en) * | 2021-01-12 | 2021-06-01 | 广东工业大学 | Method for recycling red mud iron by using cathode carbon |
| CN114134276A (en) * | 2021-11-25 | 2022-03-04 | 中冶南方都市环保工程技术股份有限公司 | Steel slag-red mud resource recycling method |
| CN114134276B (en) * | 2021-11-25 | 2022-09-13 | 中冶南方都市环保工程技术股份有限公司 | Steel slag-red mud resource recycling method |
| CN116949283A (en) * | 2023-06-20 | 2023-10-27 | 青岛盈坤源矿业科技有限公司 | Comprehensive utilization method of lead-zinc volatile residues and red mud |
| CN116949283B (en) * | 2023-06-20 | 2024-03-19 | 青岛盈坤源矿业科技有限公司 | Comprehensive utilization method of lead-zinc volatile residues and red mud |
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