CN104152671B - A kind of method of being prepared ironmaking iron ore concentrate by Iron Ore Containing Tin - Google Patents
A kind of method of being prepared ironmaking iron ore concentrate by Iron Ore Containing Tin Download PDFInfo
- Publication number
- CN104152671B CN104152671B CN201410347175.XA CN201410347175A CN104152671B CN 104152671 B CN104152671 B CN 104152671B CN 201410347175 A CN201410347175 A CN 201410347175A CN 104152671 B CN104152671 B CN 104152671B
- Authority
- CN
- China
- Prior art keywords
- iron ore
- reduction roasting
- tin
- containing tin
- iron
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a kind of method of being prepared ironmaking iron ore concentrate by Iron Ore Containing Tin, the method is that Iron Ore Containing Tin and sodium carbonate additive are mixed by a certain percentage, agglomeration, after dry, under suitable temperature and reduction roasting atmosphere, carry out reduction roasting, the method separating in conjunction with ore grinding-magnetic separation is again isolated magnetite concentrate, and remaining nonmagnetics is by filtering to isolate sodium stannate solution and filter residue; The method technological process is simple, process conditions are gentle, cost is low, environmental friendliness, has particularly realized the tin in Iron Ore Containing Tin and the efficient of iron and has separated, and iron recovery is high, and in the iron ore concentrate obtaining, tin content is low, can be used as the raw material of blast furnace ironmaking.
Description
Technical field
The present invention relates to a kind of method of Iron Ore Containing Tin comprehensive utilization, particularly a kind of by Iron Ore Containing Tin preparation refiningThe method of iron ore concentrate for iron, belongs to mineral processing and Ferrous Metallurgy field.
Background technology
China's iron ore deposit reserves are abundant, along with exhaustion day by day and the imported iron ore price of high grade iron ore resourcesRise steadily, need to strengthen complicated difficult and process the exploitation dynamics of iron ore deposit. Iron Ore Containing Tin is a kind of allusion quotationThe Complex Iron Ore of type, reserves, compared with horn of plenty, are mainly distributed in the provinces and regions such as the Inner Mongol, Guangxi, Hunan, Yunnan,Its general iron content 30%～55%, stanniferous 0.13%～0.5%. Because tin too high levels will have a strong impact on smooth operation of furnaceAnd operating duty. Therefore,, for the large-scale application of this kind of resource, must first effectively remove the tin (Sn in iron oreContent is lower than 0.08%). It is reported, in Iron Ore Containing Tin, tin mainly exists with the form of cassiterite, and is tiny moreMonomer cassiterite particle or with in fine grain teeth cloth and ferriferous oxide, conventional physical upgrading means are difficult to realizeEfficient separation and the recovery of tin, iron. Exploitation effectively separates the iron and the tin that reclaim in this mineral intergrowth that is difficult to utilize,Tool is of great significance.
At present, be thermal process for the utilization comparison effective method of stanniferous iron composite factor both at home and abroad, commonMethod have:
1) sulfiding volatilization method. Sulfiding volatilization method is to process in the world medium tin ore, the lean tin that iron content is higher at presentConcentrate or comparatively effective method of tin metallurgy slag, can realize preferably Sn, Fe and separate. Its principle is to utilize SnSReclaim tin in the qualitative feature of volatilization, such as adopting fuming furnace sulfiding volatilization method to process medium tin ore, SnVolatility is all more than 98%, and waste contains Sn below 0.07%. But the major defect of this method is: sulfuration temperatureSpend highly, need the high temperature of 1180 DEG C～1300 DEG C; Roasting time is longer, needs 60～90min; And flue gasIn contain SO2Gas, need process and could discharge through desulfurization, otherwise can cause secondary pollution.
2) chlorinating roasting. The method is by the mixing of materials containing Sn, Fe, Zn etc., adds chlorinating agent moltenLiquid is sent into rotary kiln through grinding, balling-up, after dry, then 1000 DEG C of left and right together with carbonaceous reducing agentRoasting under high temperature, the Sn in pelletizing and other nearly all non-ferrous metals volatilize with muriatic form, are receivingIn dirt system, reclaimed. If chlorination volatilization develops into the low product that general tin smelting system cannot be processed of processingThe lean tin material of the high impurity in position (especially arsenic, iron) is the efficient processing of comprehensively reclaiming multi-metal complex mineralMeans. But because chlorine and hydrogen chloride have very strong chemism, large to industrial equipment corrosivity, and environment is madeBecome harm, thereby greatly limited the extensive use of this method.
3) weak reduction roasting volatility process. Patent is " a kind of (special containing the method that separates recovery tin tailing from ore dressingProfit number: 201210453731.2) " to adopt the method for weak reduction roasting to process traditional ore-dressing technique reluctantStanniferous milltailings, makes to reach more than 70% containing the volatility of tin in tailing, can realize low-grade containing in tailingEfficient separation and the recovery of tin element. Its know-why is: under hot conditions, utilize SnO2More alsoOriginally be SnO, and the vapour pressure of SnO is large, thereby realizes volatilization and the recovery of SnO. But this method is notConsider separation and the recovery of ferro element in mine tailing. According to thermodynamic analysis, the body of CO in this method calcination atmosphereVolume concentrations [CO/ (CO+CO2)] be 20%～50%, under this reducing atmosphere condition, high price ferriferous oxide is easily gone backOriginally be Fu Shi body, be unfavorable for recovery and the utilization of follow-up ferro element.
Current published patent is mostly based on sulfuration or the principle of chloridising roasting, add different desulfurizing agents,Chlorinating agent, or the mixing of the two, have reducing agent exist and higher than the condition of 1000 DEG C under vulcanize,Tin is then reclaimed in chloridizing volatilization in flue dust. But, the outstanding problem that sulfiding volatilization and chlorinating roasting existFor energy consumption is high, contaminated environment and equipment requirement high. Therefore, day by day exhausted at current China high-quality iron ore depositUnder present situation, be badly in need of the method for utilizing Iron Ore Containing Tin of a kind of efficient, environmental protection of exploitation, economical rationality.
Summary of the invention
The defect existing while processing Iron Ore Containing Tin for prior art, the object of the invention is to be to provide a kind of workWhat process flow was simple, process conditions are gentle, cost is low, iron ore concentrate is used in eco-friendly Iron Ore Containing Tin preparation ironmakingMethod, the method tin iron good separating effect, iron recovery is high, and the iron ore concentrate tin content obtaining is low, can be used as heightThe raw material of stove ironmaking.
The invention discloses a kind of method of being prepared ironmaking iron ore concentrate by Iron Ore Containing Tin, the method comprises following stepRapid:
Step (1): raw material agglomeration
By Iron Ore Containing Tin and sodium carbonate, respectively by after milling, 1:0.1～0.4 mixes in mass ratio, then willMixed material agglomeration;
Step (2): reduction roasting
After predrying step (1) gained agglomerate, be placed in reducing atmosphere, at 850 DEG C～945 DEG C temperatureCarry out reduction roasting, after reduction roasting completes, by cooling reduction roasting product; Described reducing atmosphere is by COAnd CO2Mix composition, the percent by volume dimension of CO is held in 5%≤[CO/ (CO+CO2)]×100％≤17％；
Step (3): ball milling leaches, magnetic separation separates
Cooled step (2) reduction roasting product is placed in to water ball milling, leaching, obtains mixed slurry;Gained mixed slurry is isolated magnetite concentrate by magnetic separation, and remaining nonmagnetics is molten by filtering to isolate sodium stannateLiquid and filter residue.
Of the present inventionly prepare ironmaking by Iron Ore Containing Tin and also comprise following preferred version by the method for iron ore concentrate:
In preferred scheme, Iron Ore Containing Tin and sodium carbonate mix 1:0.2～0.3 in mass ratio.
In preferred scheme, reduction roasting temperature is 875 DEG C～925 DEG C.
In preferred scheme, the reduction roasting time is 30min～60min; Most preferably be 45min～55min.
In preferred scheme, in reducing atmosphere, the percent by volume dimension of CO is held in 10%≤[CO/ (CO+CO2)]×100％≤15％。
In preferred scheme, Iron Ore Containing Tin and sodium carbonate is by granularity after milling≤-0.1mm ,-0.1mm gradeShared quality percentage composition is 100%.
Described agglomeration method comprises pelletizing or the group of pressure.
Described cooling can be in inert atmosphere cooling or adopt water cooling.
Most preferred method, comprises the following steps:
Step (1): raw material agglomeration
After the shared quality percentage composition of be milled to respectively-0.1mm of Iron Ore Containing Tin and sodium carbonate grade is 100%,1:0.2～0.3 mixes in mass ratio, then by mixed material agglomeration;
Step (2): reduction roasting
After predrying step (1) gained agglomerate, be placed in reducing atmosphere, at 875 DEG C～925 DEG C temperatureCarry out after reduction roasting 45min～55min, by cooling reduction roasting product; Described reducing atmosphere by CO andCO2Mix composition, the percent by volume dimension of CO is held in 10%≤[CO/ (CO+CO2)]×100％≤15％；
Step (3): ball milling leaches, magnetic separation separates
Cooled step (2) reduction roasting product is placed in to water ball milling, leaching, obtains mixed slurry;Gained mixed slurry is isolated magnetite concentrate by magnetic separation, and remaining nonmagnetics is molten by filtering to isolate sodium stannateLiquid and filter residue.
Novelty of the present invention is: quantity research shows greatly, and in Iron Ore Containing Tin, tin is mainly with cassiterite mineral (SnO2)Exist, iron mainly exists with the form of high price ferriferous oxide; SnO at normal temperatures2Be insoluble in acid, aqueous slkali;And at high temperature, the decomposition pressure of tin ash is very little, it is stable compound. The roasting of inventor to Iron Ore Containing TinBurn into and gone after a large amount of experimental studies, find SnO2Roasting under weak reducing atmosphere easily generates with sodium carbonateSodium stannate, as SnO2+Na2CO3＝Na2SnO3+CO2, and ferriferous oxide does not react substantially with sodium salt, utilizesThe character that sodium stannate is soluble in water, can make tin in Iron Ore Containing Tin be converted into sodium stannate and enter solution, and then from moltenIn liquid, reclaim tin. Meanwhile, inventor surprisingly finds that sodium carbonate can significantly destroy the stable lattice of ferriferous oxide,Be conducive to dissociating of cassiterite and ferriferous oxide, and accelerate reacting of cassiterite and sodium carbonate, thereby reach Iron Ore Containing TinThe object of detin. Inventor carries out lot of experiments roasting condition is continued to optimize to discovery, at sintering temperature850 DEG C～945 DEG C, weak reduction roasting atmosphere [CO/ (CO+CO2)] in the system of × 100%=5%～17%, spyNot 875 DEG C～925 DEG C of roasting sintering temperatures, weak reduction roasting atmosphere [CO/ (CO+CO2)]×100％In=10%～15% system, high price ferriferous oxide is easily reduced to magnetic iron ore 3Fe2O3+CO＝2Fe3O4+CO2，Be conducive to the generation of sodium stannate simultaneously; It is high-grade that the product that reduction roasting generates soaks through grinding, magnetic separation separates acquisitionMagnetite concentrate, nonmagnetics filters to obtain sodium stannate solution.
Compared with the technique of existing processing Iron Ore Containing Tin, clear superiority of the present invention is:
1) iron tin separating effect is remarkable, and iron recovery is high. Sodium carbonate can react generation tin with the cassiterite in iron oreAcid sodium, the separating effect of strengthening tin and iron, in the final magnetite concentrate obtaining, the content of tin is lower than 0.08%, fullThe requirement of raw material for foot blast furnace ironmaking; Adopt the present invention, iron recovery is greater than 83%.
2) sintering temperature is low. The method of existing processing Iron Ore Containing Tin comprises sulfuration and chloride volatility process, roasting temperatureDegree is all more than 1000 DEG C, and sintering temperature of the present invention just can be realized at 850 DEG C～945 DEG C, most preferably 875℃～925℃。
3) technological process is simple, and cost is low. The present invention be with after Iron Ore Containing Tin and sodium carbonate agglomeration through RoastingBurn, adopt effective separation that conventional mill soaks, magnetic separation separation can realize iron tin, obtain the high-grade of ironmaking useMagnetite concentrate, technological process of the present invention and equipment are simple. The additive adopting is sodium carbonate, its wide material sources,Low price.
4) handling safety, environmental friendliness. Magnetizing roast process of the present invention and follow-up mill soak, magnetic separation, filtrationEtc. process, can not produce environmental pollution.
In sum, technological process of the present invention is simple, cost is low, easy and simple to handle, energy consumption is low, environmental friendliness,The tin that particularly can realize in Iron Ore Containing Tin separates with iron, and iron recovery is high, and the stanniferous amount of iron ore concentrate making is low,Can be used as the raw material of blast furnace ironmaking. The present invention is applicable to process the milltailings money of various Iron Ore Containing Tins and stanniferous ironSource, is specially adapted to process the tin iron that adopts beneficiation method to be difficult to separation, ferriferous oxide and the tight symbiosis of cassiterite and is total toRawore stone.
Brief description of the drawings
[Fig. 1] is process chart of the present invention.
Detailed description of the invention
Following examples are intended to further illustrate content of the present invention, instead of limit the scope of the invention.
TFe content 42.3% in the embodiment of the present invention and comparative example Iron Ore Containing Tin used, Sn content is 0.8%. ExaminationBefore testing, by levigate respectively to Iron Ore Containing Tin and sodium carbonate to the-shared quality percentage composition of 0.1mm grade be first100%. Illustrate: the present invention is suitable for the Iron Ore Containing Tin of processing and includes but are not limited to embodiment and comparative example is usedRaw material.
Comparative example 1
In this comparative example, do not add sodium carbonate additive
By the Iron Ore Containing Tin agglomeration after fine grinding, dry, more dry agglomerate is inserted by CO and CO2Mist groupIn the reducing atmosphere becoming, add thermal bake-out, wherein [CO/ (CO+CO2)] × 100%=15%, sintering temperature is875 DEG C, the time is 55min; After roasting agglomerate is cooling, soak through mill successively, with the magnetic field intensity of 1000GsCarry out magnetic separation separation, TFe content 60.2% in gained magnetic separation of iron ore concentrate, tin content is 0.42%, the recovery of ironRate is 78.4%. By analysis and calculation, in the solution after nonmagnetics filters, the content of Sn is 0.
Comparative example 2
In this comparative example, sintering temperature is higher
By the Iron Ore Containing Tin after fine grinding and sodium carbonate 1:0.2 batching in mass ratio; Mix rear agglomeration, dry, thenDry agglomerate is inserted by CO and CO2In the reducing atmosphere of mist composition, add thermal bake-out, wherein [CO/(CO+CO2)] × 100%=15%, sintering temperature is 1000 DEG C, the time is 45min; After roasting agglomerate is cooling,Soak through mill successively, carry out magnetic separation separation with the magnetic field intensity of 1000Gs, TFe content in gained magnetic separation of iron ore concentrate55.2%, tin content is 0.38%, and the rate of recovery of iron is 60.2%. By analysis and calculation, in raw ore 81.6%Tin after entering nonmagnetics and filtering containing in sodium stannate solution.
Comparative example 3
In this comparative example, sintering temperature is lower
By the Iron Ore Containing Tin after fine grinding and sodium carbonate 1:0.2 batching in mass ratio; Mix rear agglomeration, dry, thenDry agglomerate is inserted by CO and CO2In the reducing atmosphere of mist composition, add thermal bake-out, wherein[CO/(CO+CO2)] × 100%=15%, sintering temperature is 800 DEG C, the time is 60min; Roasting agglomerate is coolingAfter, soak through mill successively, carry out magnetic separation separation with the magnetic field intensity of 1000Gs, TFe in gained magnetic separation of iron ore concentrateContent 61.5%, tin content is 0.71%, the rate of recovery of iron is 80.4%. By analysis and calculation, non magneticIn solution after thing filters, the content of Sn is 0.
Comparative example 4
CO/ (CO+CO in calcination atmosphere in this comparative example2) higher
By the Iron Ore Containing Tin after fine grinding and sodium carbonate 1:0.3 batching in mass ratio; Mix rear agglomeration, dry, thenDry agglomerate is inserted by CO and CO2In the reducing atmosphere of mist composition, add thermal bake-out, wherein [CO/(CO+CO2)] × 100%=30%, sintering temperature is 875 DEG C, the time is 50min; After roasting agglomerate is cooling,Soak through mill successively, carry out magnetic separation separation with the magnetic field intensity of 1000Gs, TFe content in gained magnetic separation of iron ore concentrate58.2%, tin content is 0.72%, and the rate of recovery of iron is 58.4%. By analysis and calculation, in raw ore 10%Tin after entering nonmagnetics and filtering containing in sodium stannate solution.
Embodiment 1
By the Iron Ore Containing Tin after fine grinding and sodium carbonate 1:0.1 batching in mass ratio; Mix rear agglomeration, dry, thenDry agglomerate is inserted by CO and CO2In the reducing atmosphere of mist composition, add thermal bake-out, wherein [CO/(CO+CO2)] × 100%=17%, sintering temperature is 850 DEG C, the time is 60min; After roasting agglomerate is cooling,Mill soaks, and carries out magnetic separation separation with the magnetic field intensity of 1000Gs, and in gained magnetic separation of iron ore concentrate, TFe content is 62.1%,Tin content is 0.08%, and the rate of recovery of iron is 83.2%. By analysis and calculation, in raw ore, 80.6% tin entersEnter containing in sodium stannate solution after nonmagnetics filtration.
Embodiment 2
By the Iron Ore Containing Tin after fine grinding and sodium carbonate 1:0.4 batching in mass ratio; Mix rear agglomeration, dry, thenDry agglomerate is inserted by CO and CO2In the reducing atmosphere of mist composition, add thermal bake-out, wherein [CO/(CO+CO2)] × 100%=5%, sintering temperature is 945 DEG C, the time is 30min; After roasting agglomerate is cooling,Mill soaks, and carries out magnetic separation separation with the magnetic field intensity of 1000Gs, TFe content 62.8% in gained magnetic separation of iron ore concentrate,Tin content is 0.07%, and the rate of recovery of iron is 84.4%. By analysis and calculation, in raw ore, 81.5% tin entersEnter containing in sodium stannate solution after nonmagnetics filtration.
Embodiment 3
By the Iron Ore Containing Tin after fine grinding and sodium carbonate 1:0.3 batching in mass ratio; Mix rear agglomeration, dry, thenDry agglomerate is inserted by CO and CO2In the reducing atmosphere of mist composition, add thermal bake-out, wherein [CO/(CO+CO2)] × 100%=15%, sintering temperature is 875 DEG C, the time is 55min; After roasting agglomerate is cooling,Mill soaks, and carries out magnetic separation separation with the magnetic field intensity of 1000Gs, TFe content 63.5% in gained magnetic separation of iron ore concentrate,Tin content is 0.05%, and the rate of recovery of iron is 86.1%. By analysis and calculation, in raw ore, 85.6% tin entersEnter containing in sodium stannate solution after nonmagnetics filtration.
Embodiment 4
By the Iron Ore Containing Tin after fine grinding and sodium carbonate in mass ratio 1:0.2 mix; Mix rear agglomeration, dry,Again dry agglomerate is inserted by CO and CO2In the reducing atmosphere of mist composition, add thermal bake-out, wherein [CO/(CO+CO2)] × 100%=10%, sintering temperature is 925 DEG C, the time is 45min; After roasting agglomerate is cooling,Soak through mill successively, carry out magnetic separation separation with the magnetic field intensity of 1000Gs, TFe content in gained magnetic separation of iron ore concentrate64.1%, tin content is 0.06%, and the rate of recovery of iron is 87.2%. By analysis and calculation, in raw ore 84.7%Tin after entering nonmagnetics and filtering containing in sodium stannate solution.
Claims (8)
1. a method of being prepared ironmaking iron ore concentrate by Iron Ore Containing Tin, is characterized in that, comprises the following steps:
Step (1): raw material agglomeration
By Iron Ore Containing Tin and sodium carbonate, respectively by after milling, 1:0.1～0.4 mixes in mass ratio, then willMixed material agglomeration;
Step (2): reduction roasting
After predrying step (1) gained agglomerate, be placed in reducing atmosphere, at 850 DEG C～945 DEG C temperatureCarry out reduction roasting, after reduction roasting completes, by cooling reduction roasting product; Described reducing atmosphere is by COAnd CO2Mix composition, the percent by volume dimension of CO is held in 5%≤[CO/ (CO+CO2)]×100％≤17％；
Step (3): ball milling leaches, magnetic separation separates
Cooled step (2) reduction roasting product is placed in to water ball milling, leaching, obtains mixed slurry;Gained mixed slurry is isolated magnetite concentrate by magnetic separation, and remaining nonmagnetics is molten by filtering to isolate sodium stannateLiquid and filter residue.
2. according to the described method of claim 1, it is characterized in that, Iron Ore Containing Tin and sodium carbonate are in mass ratio1:0.2～0.3 mixes.
3. according to the described method of claim 1, it is characterized in that, reduction roasting temperature is 875 DEG C～925 DEG C.
4. according to the described method of claim 3, it is characterized in that, the reduction roasting time is 30min～60min.
5. according to the described method of claim 4, it is characterized in that, the reduction roasting time is 45min～55min.
6. according to the described method of claim 1, it is characterized in that the volume of CO in described reducing atmosphereFractions maintains 10%≤[CO/ (CO+CO2)]×100％≤15％。
7. according to the described method of claim 1, it is characterized in that, described Iron Ore Containing Tin and sodium carbonate pass throughAfter milling, its-the shared quality percentage composition of 0.1mm grade is 100%.
8. according to the method described in claim 1～7 any one, it is characterized in that, comprise the following steps:
Step (1): raw material agglomeration
After the shared quality percentage composition of be milled to respectively-0.1mm of Iron Ore Containing Tin and sodium carbonate grade is 100%,1:0.2～0.3 mixes in mass ratio, then by mixed material agglomeration;
Step (2): reduction roasting
After predrying step (1) gained agglomerate, be placed in reducing atmosphere, at 875 DEG C～925 DEG C temperatureCarry out after reduction roasting 45min～55min, by cooling reduction roasting product; Described reducing atmosphere by CO andCO2Mix composition, the percent by volume dimension of CO is held in 10%≤[CO/ (CO+CO2)]×100％≤15％；
Step (3): ball milling leaches, magnetic separation separates
Cooled step (2) reduction roasting product is placed in to water ball milling, leaching, obtains mixed slurry;Gained mixed slurry is isolated magnetite concentrate by magnetic separation, and remaining nonmagnetics is molten by filtering to isolate sodium stannateLiquid and filter residue.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410347175.XA CN104152671B (en) | 2014-07-21 | 2014-07-21 | A kind of method of being prepared ironmaking iron ore concentrate by Iron Ore Containing Tin |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410347175.XA CN104152671B (en) | 2014-07-21 | 2014-07-21 | A kind of method of being prepared ironmaking iron ore concentrate by Iron Ore Containing Tin |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104152671A CN104152671A (en) | 2014-11-19 |
| CN104152671B true CN104152671B (en) | 2016-05-25 |
Family
ID=51878294
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410347175.XA Active CN104152671B (en) | 2014-07-21 | 2014-07-21 | A kind of method of being prepared ironmaking iron ore concentrate by Iron Ore Containing Tin |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104152671B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105603178B (en) * | 2016-03-14 | 2018-05-01 | 中南大学 | A kind of method that the thick alloyed powder of tin iron is prepared by Iron Ore Containing Tin |
| CN106222401A (en) * | 2016-09-21 | 2016-12-14 | 内蒙古包钢钢联股份有限公司 | The preparation method of pellet |
| CN109628746B (en) * | 2019-01-03 | 2021-02-26 | 江西铜业技术研究院有限公司 | Method for extracting tin from silver separating slag |
| CN110065965B (en) * | 2019-04-25 | 2020-02-14 | 中南大学 | Composite additive and method for preparing sodium stannate by soda roasting of reinforced cassiterite concentrate |
| CN113528734B (en) * | 2020-04-13 | 2023-07-25 | 舒新前 | Method for recovering iron concentrate from iron-containing waste through roasting reduction |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102925718B (en) * | 2012-10-25 | 2013-09-11 | 中南大学 | Composite sodium salt for producing sodium stannate from cassiterite concentrate and application of composite sodium salt |
| CN102965522B (en) * | 2012-11-13 | 2014-06-04 | 中南大学 | Method for separating and recovering tin from tin-containing mill tailings |
-
2014
- 2014-07-21 CN CN201410347175.XA patent/CN104152671B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104152671A (en) | 2014-11-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104911356B (en) | A kind of solid waste gas ash, the comprehensive recycling process of vanadium slag containing zinc-iron | |
| Deng et al. | Extracting vanadium from stone-coal by oxygen pressure acid leaching and solvent extraction | |
| CN104152671B (en) | A kind of method of being prepared ironmaking iron ore concentrate by Iron Ore Containing Tin | |
| CN109554550B (en) | Method for comprehensively utilizing steelmaking dust and recovering zinc | |
| CN102534188B (en) | Method for producing iron pellet with sulfur acid residue containing large contents of impurities and enriching valuable metal | |
| CN110564970A (en) | Process method for recovering potassium, sodium and zinc from blast furnace cloth bag ash | |
| CN103993182B (en) | The comprehensive recovering process of secondary resource in a kind of iron vitriol slag | |
| CN102517439B (en) | Method for selectively roasting and separating tin, zinc and arsenic in compound iron ore containing tin, zinc and arsenic | |
| CN107299219B (en) | A kind of resource utilization method of electroplating sludge | |
| CN102242253A (en) | Method for treating poor-tin middling ore and recovering iron-making raw material | |
| CN106011489A (en) | Iron vitriol slag treatment method | |
| WO2024000838A1 (en) | Method for extracting lithium from lithium clay | |
| CN105296745A (en) | Separation and recovery method of manganese and iron in poor ferrous manganese ore | |
| CN109022773A (en) | A kind of method of comprehensive utilzation ilmenite concentrate | |
| CN109385533A (en) | The recoverying and utilizing method of titanium slag dedusting ash | |
| CN103343242B (en) | Method for interactively roasting bismuth sulfide ore and pyrolusite to extract bismuth and co-produce manganese sulfate | |
| CN109762996A (en) | A kind of method that high-antimony low arsenic soot oxidation-vulcanization fixation separates arsenic and recycles antimony | |
| CN105112677A (en) | Method for comprehensively recovering valuable metals in gold smelting slag | |
| CN102796839A (en) | Technique for producing direct reduced iron and synchronously performing desulfurization through reduction roasting of sulfate slag | |
| CN104388687A (en) | Comprehensive recycling utilization method for sintering electric dust removal ash | |
| CN104294032A (en) | Comprehensive recovery method of gravity separation tailings of tin oxide ore | |
| CN106086487A (en) | Method for smelting molybdenum-nickel-iron alloy by desulfurizing, dearsenizing and calcining low-grade molybdenum-nickel ore | |
| CN111996364B (en) | Method for recovering gold from cyanidation tailings and synchronously magnetizing iron | |
| CN103740929A (en) | Additive and method for reinforcing separation of manganese and iron through magnetic roasting-magnetic separation of high-iron manganese oxide ore | |
| CN108330289B (en) | A kind of processing method of copper smelting by pyrometallurgy clinker |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |