CN110453066A - A kind of method of high-iron bauxite flotation desilication-drastic reduction melting - Google Patents

A kind of method of high-iron bauxite flotation desilication-drastic reduction melting Download PDF

Info

Publication number
CN110453066A
CN110453066A CN201910888430.4A CN201910888430A CN110453066A CN 110453066 A CN110453066 A CN 110453066A CN 201910888430 A CN201910888430 A CN 201910888430A CN 110453066 A CN110453066 A CN 110453066A
Authority
CN
China
Prior art keywords
iron
drastic reduction
flotation desilication
slag
bauxite
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.)
Pending
Application number
CN201910888430.4A
Other languages
Chinese (zh)
Inventor
韩跃新
高海啸
余建文
李艳军
吕扬
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Liaoning Dongda Mining And Metallurgy Engineering Technology Co Ltd
Original Assignee
Liaoning Dongda Mining And Metallurgy Engineering Technology Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Liaoning Dongda Mining And Metallurgy Engineering Technology Co Ltd filed Critical Liaoning Dongda Mining And Metallurgy Engineering Technology Co Ltd
Priority to CN201910888430.4A priority Critical patent/CN110453066A/en
Publication of CN110453066A publication Critical patent/CN110453066A/en
Pending legal-status Critical Current

Links

Classifications

    • 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
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D1/00—Flotation
    • B03D1/001—Flotation agents
    • B03D1/018—Mixtures of inorganic and organic compounds
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0066—Preliminary conditioning of the solid carbonaceous reductant
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
    • 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
    • C22B1/02—Roasting processes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B21/00—Obtaining aluminium
    • C22B21/0015—Obtaining aluminium by wet processes
    • C22B21/0023—Obtaining aluminium by wet processes from waste materials
    • 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
    • C22B7/006—Wet processes
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00—Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/04—Working-up slag
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • 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
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/02—Collectors
    • 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
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2201/00—Specified effects produced by the flotation agents
    • B03D2201/06—Depressants
    • 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
    • B03D—FLOTATION; DIFFERENTIAL SEDIMENTATION
    • B03D2203/00—Specified materials treated by the flotation agents; specified applications
    • B03D2203/02—Ores
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geology (AREA)
  • Inorganic Chemistry (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Compounds Of Alkaline-Earth Elements, Aluminum Or Rare-Earth Metals (AREA)

Abstract

The invention discloses a kind of methods of high-iron bauxite flotation desilication-drastic reduction melting.The present invention is first by being crushed high-iron bauxite and ore grinding, then desiliconization processing is carried out to high-iron bauxite using cation reverse flotation technique, prereduction roasting and drastic reduction are carried out again, iron aluminium in final high-iron bauxite is effectively recycled, iron recovery > 95%, leaching rate of alumina > 85%.

Description

A kind of method of high-iron bauxite flotation desilication-drastic reduction melting
Technical field
The present invention relates to mineral processing and metallurgical technology fields, and in particular to a kind of high-iron bauxite flotation desilication-depth The method of reduction melting.
Background technique
China is the first in the world big steel production and consumption state, while being also aluminium production and consumption the biggest in the world state.With Rapid economic development, demand of the China to iron and aluminium is increasing, causes China's iron ore and bauxite external dependence degree high.With Gradually decreased for the abundant ore source of exploitation in world wide, increase the exploitation and benefit to the domestic complicated stone containing iron and aluminum complex ore With to solve iron resource and bauxite resource bottleneck problem it is significant.
Guangxi storage has a large amount of high-iron bauxites, wherein oneself three water aluminium for verifying of the Guigang, Binyang and Heng County of Central Guangxi Stone type bauxite reserves are more than 200,000,000 tons, are the high iron gibbsite-type bauxite mineral deposits that China is currently known maximum-norm.It is passing It unites during alumina producing Bayer process, since high-iron bauxite iron content is higher, reduces the single machine production ability of equipment, And the harmfulness solid waste red mud amount generated increases significantly.Therefore, new technology is researched and developed to realize the comprehensive high-efficiency of high-iron bauxite Using with important practical application value.
Summary of the invention
The present invention provides a kind of side of high-iron bauxite flotation desilication-drastic reduction melting to solve the above-mentioned problems Method, first by carrying out broken and ore grinding to high-iron bauxite, then using cation reverse flotation technique to high-iron bauxite into Row desiliconization processing, then carry out prereduction roasting and drastic reduction, it is therefore an objective to recycle iron aluminium effectively, iron recovery > 95%, Leaching rate of alumina > 85%.
To achieve the above object, the present invention provides following technical schemes:
(1) by high-iron bauxite, broken, ore grinding to -0.074mm grade quality accounts for 70%, is swept using thick two essence two anti-floating It selects process flow to carry out flotation desilication, ferro-aluminum mine concentrate, SiO in ferro-aluminum mine concentrate is obtained after flotation desilication is handled2Quality hundred Divide ratio≤5%；
(2) ferro-aluminum mine concentrate is incorporated certain proportion coal dust and lime, obtains mixed material, be added in rotary kiln and carry out in advance Part ferriferous oxide is reduced to metallic iron, calcining time is controlled, so that ferro-aluminum mine concentrate iron after reduction roasting by reduction roasting Degree of metalization >=70%, obtain high-temp. furnace material；
(3) high-temp. furnace material is sent into drastic reduction furnace, carries out heating fusing and restores, goes back the iron mineral in furnace charge all Original realizes slag iron separation at metallic iron, and the molten iron of generation is exported from reduction furnace molten iron to be discharged, and obtains the pig iron, molten iron weight of iron Score >=92%, iron recovery > 95%；The calcium aluminate slag of generation is discharged from slag-drip opening；
(4) calcium aluminate slag is cooled down after going out from drastic reduction fire grate, and clinker is loose powdered from powder in cooling, I.e. high activity is leached from powder aluminium slag using sodium carbonate liquor, and sodium aluminate solution, leaching rate of alumina > 85% are obtained after leaching；
(5) obtained sodium aluminate solution is leached to be passed through containing CO2Rotary kiln exhaust gas, while being stirred decomposes sodium aluminate For Al (OH)3It is precipitated；
Wherein, for the flotation desilication using lauryl amine as collecting agent, calgon is inhibitor, and sulfuric acid is adjustment Agent, pH 5.5.
It is 0.8~1.0 that the coal dust additional amount, which is with carbon ratio,.
The additional amount of the lime makes n in mixed material (CaO)/n (Al2O3)≥1.75。
The prereduction maturing temperature is 1000~1250 DEG C.
It is 1350~1500 DEG C that temperature is restored in the step (3), and the recovery time is 30~60min.
The described calcium aluminate slag cooling velocity control is naturally cold in cooling tank after dropping to 1200 DEG C in 4~6 DEG C/min But.
Sodium carbonate liquor 90~the 110g/L of concentration, 80~100 DEG C of extraction temperature, 80~100min of extraction time, Solution quality/solid masses is 6:1~10:1.
10~the 15L/h of exhaust flow, carbon divide 45~55 DEG C of temperature, 200~250r/min of stirring rate.
In the above method, the present invention provides high-iron bauxite flotation desilication-drastic reduction melting methods, first to height Ferrallite mine carries out broken and ore grinding (- 0.074mm accounts for 70%), then using cation reverse flotation technique to high-iron bauxite into Row desiliconization processing, SiO after desiliconization processing2Content is less than 5%.Desiliconization treated high-iron bauxite is incorporated a certain amount of coal and stone Ash is added in rotary kiln after mixing, reduction roasting is carried out at 1000~1250 DEG C, part ferriferous oxide is reduced to metal Iron.The high-temp. furnace material for completing rotary kiln prereduction enters drastic reduction furnace, and iron mineral is all reduced at 1350~1500 DEG C Metallic iron, while furnace charge slag making melts and realizes slag iron separation.
The utility model has the advantages that
A part of gangue mineral that can dish out is handled by using desiliconization, reduces subsequent job treating capacity, improves molten steel quality. Then rotary kiln prereduction is added after high-iron bauxite being incorporated lime stone and coal mixing, the material come out from rotary kiln enters electricity Furnace high melt, iron are completely reduced as metallic iron and slag iron separation.More economical cheap coal can be used using two sections of reduction Powder replaces coke, while energy saving relative to blast furnace process, has saved cost.
By controlling the dosage of lime stone, guarantee that mainly coordinating for calcium aluminate slag is divided into 12CaO7Al2O3(C12A7) And 2CaOSiO2(C2S).Since the C2S in clinker is in cooling procedure due to crystal transfer from powder, clinker is in cooling procedure In from powder be loose powdered, obtain sodium aluminate solution after being leached with sodium carbonate liquor.Sodium aluminate solution is passed through rotary kiln again Tail gas (contains CO2), so that sodium aluminate is decomposed into Al (OH)3It is precipitated.The technique can be such that iron aluminium is effectively recycled, and iron recovery > 95%, leaching rate of alumina > 85%.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.
Fig. 1 is the process flow chart of the method for high-iron bauxite flotation desilication-drastic reduction melting of the present invention.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, technical solution of the present invention will be carried out below Detailed description.Obviously, described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.Base Embodiment in the present invention, those of ordinary skill in the art are obtained all without making creative work Other embodiment belongs to the range that the present invention is protected.
Bauxite TFe >=25% in the embodiment of the present invention, quality of alumina score >=35%, SiO2Mass fraction≤ 15%.
High-iron bauxite carries out SiO after Counterfloatating desiliconization in the embodiment of the present invention2Mass fraction≤5%.
Degree of metalization >=70% of flotation concentrate iron after rotary kiln reduction roasting in the embodiment of the present invention.
Molten iron in the embodiment of the present invention contains Fe 92~95% by mass percentage, C 3.5~4.2%, P≤0.06%, S≤0.02%, Si≤0.5%.
Embodiment 1
Certain high-iron bauxite that the present embodiment uses contains TFe 26.84%, Al by weight percentage2O336.28%, SiO2 10.06%, flotation desilication-drastic reduction melting is carried out to it, as shown in Figure 1, following the steps below:
(1) high-iron bauxite is crushed first, ore grinding to -0.074mm grade quality accounts for 70%, using cationic anti- Flotation technology, one is thick, and two essences, two processes swept carry out pre-desiliconizing processing, wherein using lauryl amine as collecting agent, six inclined phosphorus Sour sodium is as inhibitor, sulphur acid for adjusting pH, pH 5.5；SiO in ferro-aluminum concentrate after pre-desiliconizing processing2Mass fraction is 3%；
(2) it is added in rotary kiln after pre-desiliconizing treated ferro-aluminum concentrate supplying certain proportion coal dust and lime mixing, In Reduction roasting is carried out at 1150 DEG C, and part ferriferous oxide is reduced to metallic iron；Lime-crushed stone pile is n (CaO)/n (Al2O3)= 1.76；It is 0.8 that coal dust additional amount, which is with carbon ratio,；The degree of metalization of pre-desiliconizing concentrate iron after reduction roasting is 75%；
(3) it is directly entered drastic reduction furnace from the high-temp. furnace material that rotary kiln comes out, iron mineral all restores at 1500 DEG C At metallic iron, while load melting and slag iron separation, the molten iron of generation export discharge from reduction furnace molten iron, obtain the pig iron；It generates High activity from powder aluminium slag from slag-drip opening be discharged；Molten iron contains Fe 92.03%, C 3.70%, P 0.05%, S by mass percentage 0.01%, Si 0.42%；
(4) calcium aluminate slag goes out rear cooling velocity control in 4~6 DEG C/min, after dropping to 1200 DEG C from drastic reduction fire grate The natural cooling in cooling tank, clinker are loose powdered from powder in cooling, are leached using sodium carbonate liquor, are obtained after leaching Sodium aluminate solution；Wherein sodium carbonate liquor concentration 110g/L, 90 DEG C of extraction temperature, extraction time 80 minutes, liquid-solid ratio 7:1；Oxygen Changing aluminium leaching rate is 86%；
(5) obtained sodium aluminate solution is leached to be passed through containing CO2Rotary kiln exhaust gas, stirring so that sodium aluminate is decomposed into high-purity Al(OH)3It is precipitated, realizes aluminium high efficiente callback；Wherein exhaust flow 15L/h, carbon divide 46 DEG C of temperature, stirring rate 220r/min.
Embodiment 2
The present embodiment contains TFe 28.57%, Al using certain iron red mud by weight percentage2O335.48%, SiO2 11.06%, with embodiment 1, difference is pre-desiliconizing-drastic reduction method of smelting:
(1) SiO of concentrate after pre-desiliconizing is handled2Mass fraction is 4.04%；
(2) temperature of pre-desiliconizing concentrate rotary kiln reduction roasting is 1050 DEG C, and lime-crushed stone pile is n (CaO)/n (Al2O3) =1.79；It is 0.9 that coal dust additional amount, which is with carbon ratio,；The degree of metalization of pre-desiliconizing concentrate iron after reduction roasting is 78%；
(3) reduction temperature of drastic reduction furnace is 1450 DEG C；Molten iron contains Fe 93.03%, C by mass percentage 3.52%, P 0.04%, S 0.01%, Si 0.33%；
(4) the sodium carbonate liquor concentration that leaching uses is 100g/L, and 85 DEG C of extraction temperature, extraction time 90 minutes, solution Quality/solid masses is 6:1；Leaching rate of alumina is 88%.
(5) rotary kiln exhaust gas flow is 13L/h, and carbon divides temperature to be 50 DEG C, stirring rate 240r/min.
Embodiment 3
The present embodiment contains TFe 27.85%, Al using certain high-iron bauxite by weight percentage2O336.27%, SiO2 10.57%, with embodiment 1, difference is method:
(1) SiO of concentrate after pre-desiliconizing is handled2Mass fraction is 3.45%；
(2) temperature of pre-desiliconizing concentrate rotary kiln reduction roasting is 1200 DEG C, and lime-crushed stone pile is n (CaO)/n (Al2O3) =1.80；It is 1 that coal dust additional amount, which is with carbon ratio,；The degree of metalization of pre-desiliconizing concentrate iron after reduction roasting is 76%；
(3) reduction temperature of drastic reduction furnace is 1420 DEG C；Molten iron contains Fe 92.67%, C by mass percentage 3.80%, P 0.03%, S 0.02%, Si 0.35%；
(4) the sodium carbonate liquor concentration used is leached as 105g/L, and 95 DEG C of extraction temperature, extraction time 88 minutes, liquid was solid Compare 8:1；Leaching rate of alumina is 89%；
(5) rotary kiln exhaust gas flow is 12L/h, and carbon divides temperature to be 48 DEG C, stirring rate 230r/min.
Embodiment 4
TFe 25.96%, Al are contained using certain iron red mud by weight percentage2O335.45%, SiO213.87%, side With embodiment 1, difference is method:
(1) SiO of concentrate after pre-desiliconizing is handled2Mass fraction is 4.09%；
(2) temperature of pre-desiliconizing concentrate rotary kiln reduction roasting is 1250 DEG C, and lime-crushed stone pile is n (CaO)/n (Al2O3) =1.85；It is 0.9 that coal dust additional amount, which is with carbon ratio,；The degree of metalization of pre-desiliconizing concentrate iron after reduction roasting is 73%.
(3) reduction temperature of drastic reduction furnace is 1400 DEG C；Molten iron contains Fe 92.77%, C by mass percentage 4.03%, P 0.02%, S 0.02%, Si 0.45%；
(4) the sodium carbonate liquor concentration that leaching uses is 95g/L, and 100 DEG C of extraction temperature, extraction time 100 minutes, solution Quality/solid masses is 9:1；Leaching rate of alumina is 90%；
(5) rotary kiln exhaust gas flow is 10L/h, and carbon divides temperature to be 55 DEG C, stirring rate 250r/min.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.

Claims (7)

1. a kind of method of high-iron bauxite flotation desilication-drastic reduction melting, it is characterised in that follow the steps below:
(1) by high-iron bauxite, broken, ore grinding to -0.074mm grade quality accounts for 70%, sweeps reverse flotation work using thick two essence two Skill process carries out flotation desilication, and ferro-aluminum mine concentrate, SiO in ferro-aluminum mine concentrate are obtained after flotation desilication is handled2Mass percent ≤ 5%；
(2) ferro-aluminum mine concentrate is incorporated certain proportion coal dust and lime, obtains mixed material, be added in rotary kiln and carry out prereduction Part ferriferous oxide is reduced to metallic iron, calcining time is controlled, so that the gold of ferro-aluminum mine concentrate iron after reduction roasting by roasting Belong to rate >=70%, obtains high-temp. furnace material；
(3) high-temp. furnace material is sent into drastic reduction furnace, carries out heating fusing and restores, and is reduced into the iron mineral in furnace charge all Metallic iron, and realize slag iron separation, the molten iron of generation is exported from reduction furnace molten iron to be discharged, and the pig iron, molten iron weight of iron score are obtained >=92%, iron recovery > 95%；The calcium aluminate slag of generation, i.e. high activity are discharged from powder aluminium slag from slag-drip opening；
(4) calcium aluminate slag is cooled down after going out from drastic reduction fire grate, and clinker is loose powdered from powder in cooling, is used Sodium carbonate liquor leaches, and sodium aluminate solution, leaching rate of alumina > 85% are obtained after leaching；
(5) obtained sodium aluminate solution is leached to be passed through containing CO2Rotary kiln exhaust gas, while being stirred makes sodium aluminate be decomposed into Al (OH)3It is precipitated；
Wherein, for the flotation desilication using lauryl amine as collecting agent, calgon is inhibitor, and sulfuric acid is regulator, pH It is 5.5.
2. a kind of method of high-iron bauxite flotation desilication-drastic reduction melting according to claim 1, it is characterised in that The additional amount of the lime makes n in mixed material (CaO)/n (Al2O3) >=1.75, it is 0.8 that coal dust additional amount, which is with carbon ratio, ~1.0.
3. a kind of method of high-iron bauxite flotation desilication-drastic reduction melting according to claim 1, it is characterised in that The prereduction maturing temperature is 1000~1250 DEG C.
4. a kind of method of high-iron bauxite flotation desilication-drastic reduction melting according to claim 1, it is characterised in that It is 1350~1500 DEG C that temperature is restored in the step (3), and the recovery time is 30~60min.
5. a kind of method of high-iron bauxite flotation desilication-drastic reduction melting according to claim 1, it is characterised in that The calcium aluminate slag cooling velocity is controlled in 4~6 DEG C/min, drops to after 1200 DEG C the natural cooling in cooling tank.
6. a kind of method of high-iron bauxite flotation desilication-drastic reduction melting according to claim 1, it is characterised in that Sodium carbonate liquor 90~the 110g/L of concentration, 80~100 DEG C of extraction temperature, 80~100min of extraction time, liquid quality/ Solid masses is 6:1~10:1.
7. a kind of method of high-iron bauxite flotation desilication-drastic reduction melting according to claim 1, it is characterised in that 10~the 15L/h of exhaust flow, carbon divide 45~55 DEG C of temperature, 200~250r/min of stirring rate.
CN201910888430.4A 2019-09-19 2019-09-19 A kind of method of high-iron bauxite flotation desilication-drastic reduction melting Pending CN110453066A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201910888430.4A CN110453066A (en) 2019-09-19 2019-09-19 A kind of method of high-iron bauxite flotation desilication-drastic reduction melting

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201910888430.4A CN110453066A (en) 2019-09-19 2019-09-19 A kind of method of high-iron bauxite flotation desilication-drastic reduction melting

Publications (1)

Publication Number Publication Date
CN110453066A true CN110453066A (en) 2019-11-15

Family

ID=68492340

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201910888430.4A Pending CN110453066A (en) 2019-09-19 2019-09-19 A kind of method of high-iron bauxite flotation desilication-drastic reduction melting

Country Status (1)

Country Link
CN (1) CN110453066A (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102605185A (en) * 2012-03-16 2012-07-25 东北大学 Comprehensive iron-aluminium paragenetic mineral utilization method
US20150144570A1 (en) * 2010-12-30 2015-05-28 Nalco Company Glycerides and fatty acid mixtures and methods of using same
CN109382213A (en) * 2017-08-10 2019-02-26 中国铝业股份有限公司 A kind of beneficiation method of gibbsitic bauxite

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150144570A1 (en) * 2010-12-30 2015-05-28 Nalco Company Glycerides and fatty acid mixtures and methods of using same
CN102605185A (en) * 2012-03-16 2012-07-25 东北大学 Comprehensive iron-aluminium paragenetic mineral utilization method
CN109382213A (en) * 2017-08-10 2019-02-26 中国铝业股份有限公司 A kind of beneficiation method of gibbsitic bauxite

Similar Documents

Publication Publication Date Title
CN102583477B (en) Comprehensive utilization method of high-ferrum and low-grade bauxite
CN109880955B (en) Smelting method and smelting device for treating iron-based multi-metal ore material in short process
CN111378851B (en) System and method for treating laterite nickel ore
CN101550491B (en) Method for extracting nickel or cobalt from nickel ore with chloridizing roasting-leaching method
CN102168156B (en) Iron and aluminum melting separation method for complicated and hard-dressing aluminum and iron intergrowth ore
CN104141018B (en) A kind of slag recoverying and utilizing method
KR20180125572A (en) A method of melting and reducing iron by stirring vortex
CN102605185B (en) Comprehensive utilization method for iron-aluminium paragenetic mine
CN107254585B (en) A method of recycling zinc, indium, iron, gallium from iron vitriol slag
CN104163445A (en) Bauxite comprehensive utilization method
CN110606506A (en) Method for producing titanium slag and titanium white chloride by using Panzhihua ilmenite
CN107299218B (en) A kind of iron vitriol slag desulfurization pelletizing, preparation and its application
CN102373329A (en) Method for gathering nickel and iron from laterite-nickel ores
CN108046315A (en) A kind of TiCl4Preparation process and system
CN110484734A (en) A kind of method of iron red mud high magnetic pre-selection-drastic reduction melting
CN108441636B (en) A kind of method of two sections of vacuum reductions processing red mud
CN112707424A (en) Method for producing alumina by using slag metallurgy technology
CN106673682A (en) Method for producing iron alloy and refractory material by utilizing solid wastes
CN107267745B (en) The extracting method of valuable element in a kind of iron vitriol slag
CN113174456A (en) Comprehensive utilization method for smelting reduction of high-iron red mud by bottom-top combined blowing
CN111893308A (en) Method for comprehensively utilizing red mud without tailings
CN110484712A (en) A kind of prereduction-electric furnace depth reduction-fluoride process comprehensive utilization of V-Ti magnetite technique
CN105087864A (en) Method for directly producing titanium carbide from vanadium titano-magnetite
CN1374150A (en) Magnetic and gravitational separation and comprehensive utilization of vonsenite
CN212247156U (en) System for handle laterite-nickel ore deposit

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20191115