CN102277462A - Method for comprehensive utilization of vanadium titanomagnetite - Google Patents

Method for comprehensive utilization of vanadium titanomagnetite Download PDF

Info

Publication number
CN102277462A
CN102277462A CN2011102366822A CN201110236682A CN102277462A CN 102277462 A CN102277462 A CN 102277462A CN 2011102366822 A CN2011102366822 A CN 2011102366822A CN 201110236682 A CN201110236682 A CN 201110236682A CN 102277462 A CN102277462 A CN 102277462A
Authority
CN
China
Prior art keywords
vanadium
magnetite
iron
vanadium titano
titanium
Prior art date
Application number
CN2011102366822A
Other languages
Chinese (zh)
Inventor
张建良
邢相栋
刘征建
王春龙
张旭
曹明明
任山
苏步新
焦克新
Original Assignee
北京科技大学
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 北京科技大学 filed Critical 北京科技大学
Priority to CN2011102366822A priority Critical patent/CN102277462A/en
Publication of CN102277462A publication Critical patent/CN102277462A/en

Links

Classifications

    • 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 invention relates to a method for comprehensive utilization of vanadium titanomagnetite and belongs to the field of a new process for smelting iron by direct reduction in metallurgical industry. For solving the problem of over-low utilization degree of iron, vanadium and titanium in vanadium titanomagnetite and the problems of high comprehensive energy consumption and heavy environment pollution of a whole smelting process due to a sintering process of the prior art, the invention provides a method for producing high-titanium slag and shot iron by agglomerating vanadium titanomagnetite and reducing melt at a high temperature in a rotary hearth furnace. The invention adopts technical scheme that the method comprises pelletizing of vanadium titanomagnetite, high temperature reduction in the rotary hearth furnace, and magnetic separation, wherein high-titanium slag and shot iron are directly produced by high temperature reduction in the rotary hearth furnace. When the method is used for treating vanadium titanomagnetite, the problem of titanium and vanadium resource recovery is solved effectively, qualified shot iron for steel making in electric furnace can be produced, and the iron, vanadium, titanium and other valuable elements in vanadium titanomagnetite can be fully utilized.

Description

A kind of vanadium titano-magnetite comprehensive utilization method
Technical field
The present invention relates to a kind of vanadium titano-magnetite comprehensive utilization method, belong to direct reduction iron making novel process field in the metallurgy industry.Utilize the rotary hearth furnace high temperature reduction to produce titanium slag and pearl iron technology molten the branch, titanium slag is after vanadium extraction, and the higher-grade titanium slag and the vanadium slag that obtain are to reach the purpose of valuable elements such as iron, vanadium, titanium in the comprehensive reutilization vanadium titano-magnetite.
Background technology
Vanadium titano-magnetite be a kind of serve as main and association has the mineral of various ingredients such as small additions of chromium, gallium, scandium, cobalt, nickel, platinum family with iron, vanadium, titanium, have important comprehensive utilization value.
In the ore there be the major metal mineral: secondly titanomagnetite (mineral facies of based magnet ore deposit, ulvite, aluminum-spinel and ilmenite platelet) and ilmenite are magnetite, limonite, pyrrhosiderite, secondary pyrite; Sulfide is based on pyrrhotite, and other has cobalt nickel pyrite, linnaeite, sulphur nickel cobalt ore, purple bravoite, chalcopyrite, pyrite and vallerite etc., the mineral composition complexity, and it is bigger comprehensively to extract difficulty.
At present, the main technique flow process that vanadium titano-magnetite is handled is that the iron ore concentrate with beneficiation enrichment utilizes existing sintering-blast furnace-bof process and molten iron blowing process for extracting vanadium, carries out the separation of iron, vanadium, titanium; The then further ore dressing of iron selection tailings obtains ilmenite concentrate.But in raw ore, the rate of recovery of iron has only about 70%, and the rate of recovery of vanadium has only about 50%, and the rate of recovery of titanium is no more than 10%.On the whole, iron, vanadium, titanium utilize degree on the low side, and simultaneously, owing to there is sintering circuit, the comprehensive energy consumption of whole smelting process is higher, and environmental pollution is serious.
Except that above-mentioned existing flow process, China has also organized repeatedly tackling key problem to the comprehensive utilization of vanadium titano-magnetite, has obtained obvious progress, has developed many new technological process, can reduce the north and south flow process.North flow process is mainly " vanadium titanium magnetite concentrate Na-activation roasting-water logging vanadium extraction-directly the molten branch of reduction-electric furnace, steel-making-titanium slag are produced titanium white ".The south flow process is mainly " v-ti magnetite concentrate pelletizing-shaft kiln directly reduced-electric furnace melts branch-molten iron-steelmaking, slag vanadium extraction and carries titanium ".But all there are some defectives in these two kinds of flow processs, and northern flow process is that sodium agent consumption is big, and the pelletizing reduction degradation after the sodium vanadium extraction is serious; The south flow process has been avoided the deficiency of northern flow process, but technological difficulties are that the trend of vanadium is difficult to control in the molten branch process of electric furnace, and two class flow processs all are in conceptual phase.
Application number is that the vanadium titano-magnetite rotary hearth furnace that No. 200510020117.7 Chinese patent application described " method of separation and Extraction metallic element from vanadium titano-magnetite " proposes directly reduces-the molten division technique of electric furnace, improved the rate of recovery of iron, vanadium, titanium to a certain extent, but the phenomenon that reoxidizes that has metallized pellet in the technology, a large amount of slag making materialses that add in the molten simultaneously branch process and slag cause the titanium slag grade not high to the erosion of furnace lining, have reduced the economy of titanium and have extracted value; Because electric furnace melts the existence that divides process, energy expenditure is higher relatively, is unfavorable for the comprehensive recovery of v-ti magnetite ore resources simultaneously.
Summary of the invention
For this reason, the present invention is intended to overcome above-mentioned defective, provides a kind of with the vanadium titano-magnetite agglomeration, with the molten method of producing titanium slag and pearl iron of dividing of rotary hearth furnace high temperature reduction.Use present method and handle vanadium titano-magnetite, not only can effectively solve the recovery problem of titanium, vanadium resource, can also obtain the pearl iron of up-to-standard power supply stove steel-making, made full use of valuable elements such as the iron in the vanadium titano-magnetite, vanadium, titanium.
Technical scheme of the present invention is: a kind of vanadium titano-magnetite comprehensive utilization method, and concrete grammar comprises: vanadium titano-magnetite is made ball, rotary hearth furnace high temperature reduction, magnetic separation separation;
1. pellet forming process: the vanadium titano-magnetite concentrate is mixed by a certain percentage with reductive agent, binding agent, flux, be configured to the mixing raw material, wherein: the quality percentage composition of vanadium titano-magnetite is 74～80%, the quality percentage composition of reductive agent is 15～20%, the quality percentage composition of binding agent is 0.5～3%, and the quality percentage composition of flux is 2～5%;
Be configured to the mixing raw material is pressed into 18-25mm by ball press agglomerate with above-mentioned;
2. rotary hearth furnace high temperature reduction: with the above-mentioned agglomerate of making through 200-300 ℃ of drying after, add in the rotary hearth furnace, adopt liquid fuel or geseous fuel to be heated under 1350-1500 ℃ the temperature, reduction 15-45min obtains the titanium slag and the pearl iron of initial gross separation.
3. magnetic separation separates: the titanium slag and the pearl iron of the initial gross separation that rotary hearth furnace is produced, further separate by magnetic separator, and titanium slag is after vanadium extraction, and the higher-grade titanium slag that obtains is used for the Production By Sulfuric Acid Process titanium white, and vanadium slag is used for vanadium extraction, and pearl iron is as the raw material of Electric furnace steel making.
Described vanadium titano-magnetite refers to that mainly grade of titanium dioxide reaches 8% and reaches above v-ti magnetite concentrate, and ilmenite concentrate contains iron ore concentrate with other compound.
Described reductive agent comprises coal dusts such as hard coal, bituminous coal or brown coal, also comprises other carbonaceous materials such as plastics, damaged tire.The amount of allocating into of reductive agent with the proportioning of Sauerstoffatom in institute's carbon content and the vanadium titano-magnetite be 1.0-1.3 with addition of.
Described binding agent mainly refers to organic binder bond, as Semen Maydis powder, polyvinyl alcohol or sodium humate etc.
Described flux is meant and promotes reduction or molten sodium class or the calcium class flux that divides.
This technology is compared with the molten point-score of rotary hearth furnace reduction-electric furnace, cold bound pellet direct-reduction process, high temperature reduction method, has following distinguishing feature:
1. the present invention adopts the technology of rotary hearth furnace high temperature reduction-magnetic separation separation of produced titanium slag and pearl iron, is better than the molten division technique of rotary hearth furnace reduction-electric furnace, and present device is simple, less investment has been cancelled the molten operation break-down of electric furnace, has reduced energy consumption, reduce production cost, can access high-grade titanium slag; Simultaneously, the rotary hearth furnace exhaust gas discharged can be used for the dry and rotary hearth furnace fuel of pelletizing, and the energy utilization is more reasonable.
2. reduction temperature height of the present invention (1350-1500 ℃), speed of response is fast, reaction times short (15-45min), (the molten division technique of rotary hearth furnace reduction-electric furnace is respectively 1200-1350 ℃ and 50-150min with respect to other reducing process, cold bound pellet directly is reduced to 1100-1150 ℃ and 3-4h etc.), the production cycle shortens greatly.
3. the present invention can partly utilize domestic refuses such as plastic waste, damaged tire, helps environment protection and reduces cost, and reaches the comprehensive utilization of resource.
4. the titanium slag grade that obtains of the present invention is stabilized in more than 47%, and the iron protoxide amount satisfies the requirement of sulfate process titanium dioxide production technique to raw material less than 2% in the slag; Pearl iron iron-holder is an electric furnace fine steelmaking feed more than 96%, and magnetic separation vanadium titanium recovery rate reaches 97%, and iron recovery is more than 97%.
Description of drawings
Fig. 1 is a process flow sheet of the present invention.
Embodiment
Embodiment 1:
What this embodiment adopted is that (composition is TFe54.54% to the Panzhihua Region vanadium titano-magnetite, FeO23.16%, SiO 22.934%, CaO0.398%, Al 2O 33.54%, MgO3.7%, S0.292%, TiO 210.77%, V 2O 50.666%), and with addition of 20% reductive agent (composition is a fixed carbon 86.47%, fugitive constituent 8.58%, ash content 4.95%, S0.31%), flux (CaF 22%) and binding agent (Semen Maydis powder 2.5%), fully adds water behind the mixing, be pressed into bulk, after drying under the 200-300 ℃ of temperature, join and carry out high temperature reduction in the rotary hearth furnace, the temperature in the rotary hearth furnace remains on 1350-1500 ℃, recovery time is controlled at 15-45min, after reduction finished, magnetic separation separated, and obtains titanium slag and pearl iron, after the titanium slag vanadium extraction, the grade of titanium slag is more than 48.73%, and the iron protoxide amount satisfies the requirement of sulfate process titanium dioxide production technique to raw material less than 2% in the slag; Pearl iron iron-holder is an electric furnace fine steelmaking feed more than 96%, and magnetic separation vanadium titanium recovery rate reaches 97%, and iron recovery is more than 97%.
Embodiment 2:
What this embodiment adopted is that (composition is TFe53.54% to the Panzhihua Region vanadium titano-magnetite, FeO28.16%, SiO 22.2%, CaO0.338%, Al 2O 32.74%, MgO1.4%, S0.302%, TiO 210.82%, V 2O 50.5%), and with addition of 15% reductive agent (composition is a fixed carbon 86.47%, fugitive constituent 8.58%, ash content 4.95%, S0.31%), flux (Na 2SO 43%, CaF 22%) and binding agent (Semen Maydis powder 1.5%), fully adds water behind the mixing, be pressed into bulk, after drying under the 200-300 ℃ of temperature, join and carry out high temperature reduction in the rotary hearth furnace, the temperature in the rotary hearth furnace remains on 1350-1500 ℃, recovery time is controlled at 15-45min, after reduction finished, magnetic separation separated, and obtains titanium slag and pearl iron, after the titanium slag vanadium extraction, the grade of titanium slag is more than 49.64%, and the iron protoxide amount satisfies the requirement of sulfate process titanium dioxide production technique to raw material less than 2% in the slag; Pearl iron iron-holder is an electric furnace fine steelmaking feed more than 96%, and magnetic separation vanadium titanium recovery rate reaches 97%, and iron recovery is more than 97%.
Embodiment 3:
What this embodiment adopted is that (composition is TFe55.34% to the Panzhihua Region vanadium titano-magnetite, FeO29.07%, SiO 22.3%, CaO0.32%, Al 2O 32.45%, MgO1.21%, S0.35%, TiO 28.27%, V 2O 50.69%), and with addition of 18% reductive agent (composition is a fixed carbon 86.47%, fugitive constituent 8.58%, ash content 4.95%, S0.31%), flux (Na 2SO 41.5%, CaF 22.5%) and binding agent (Semen Maydis powder 3.0%), fully adds water behind the mixing, be pressed into bulk, after drying under the 200-300 ℃ of temperature, join and carry out high temperature reduction in the rotary hearth furnace, the temperature in the rotary hearth furnace remains on 1350-1500 ℃, recovery time is controlled at 15-45min, after reduction finished, magnetic separation separated, and obtains titanium slag and pearl iron, after the titanium slag vanadium extraction, the grade of titanium slag is 47.16%, and the iron protoxide amount satisfies the requirement of sulfate process titanium dioxide production technique to raw material less than 2% in the slag; Pearl iron iron-holder is an electric furnace fine steelmaking feed more than 96%, and magnetic separation vanadium titanium recovery rate reaches 97%, and iron recovery is more than 97%.

Claims (7)

1. vanadium titano-magnetite comprehensive utilization method, it is characterized in that: concrete grammar comprises: vanadium titano-magnetite is made ball, rotary hearth furnace high temperature reduction, magnetic separation and is separated;
Step 1: vanadium titano-magnetite is made ball: vanadium titano-magnetite concentrate and reductive agent, binding agent, flux are mixed in proportion, be configured to the mixing raw material, wherein: the quality percentage composition of vanadium titano-magnetite is 74～80%, the quality percentage composition of reductive agent is 15～20%, the quality percentage composition of binding agent is 1.5～3%, and the quality percentage composition of flux is 2～5%; With the mixing raw material that is configured to by being pressed into the agglomerate of 18-25mm;
Step 2: rotary hearth furnace high temperature reduction: the agglomerate that step 1 is made through 200-300 ℃ of drying after, add in the rotary hearth furnace, be heated under 1350-1500 ℃ the temperature, reduction 15-45min obtains the titanium slag and the pearl iron of initial gross separation;
Step 3: magnetic separation separates: the titanium slag and the pearl iron of the initial gross separation that rotary hearth furnace is produced, further separate by magnetic separator, titanium slag is after vanadium extraction, and the higher-grade titanium slag that obtains is used for the Production By Sulfuric Acid Process titanium white, vanadium slag is used for vanadium extraction, and pearl iron is as the raw material of Electric furnace steel making.
2. a kind of vanadium titano-magnetite comprehensive utilization method as claimed in claim 1, it is characterized in that: described vanadium titano-magnetite is that grade of titanium dioxide reaches 8% and above v-ti magnetite concentrate, and grade of titanium dioxide reach 8% and above ilmenite concentrate and other compound contain iron ore concentrate.
3. a kind of vanadium titano-magnetite comprehensive utilization method as claimed in claim 1 is characterized in that: described reductive agent is a carbonaceous material.
4. a kind of vanadium titano-magnetite comprehensive utilization method as claimed in claim 1 is characterized in that: the amount of allocating into of described reductive agent with the proportioning of Sauerstoffatom in institute's carbon content and the vanadium titano-magnetite be 1.0-1.3 with addition of.
5. a kind of vanadium titano-magnetite comprehensive utilization method as claimed in claim 3 is characterized in that: described carbonaceous material is one or more mixtures in hard coal, bituminous coal, brown coal, plastic waste or the damaged tire.
6. a kind of vanadium titano-magnetite comprehensive utilization method as claimed in claim 1 is characterized in that: described binding agent is an organic binder bond.
7. a kind of vanadium titano-magnetite comprehensive utilization method as claimed in claim 1 is characterized in that: described flux is to promote reduction or molten sodium class or the calcium class flux that divides.
CN2011102366822A 2011-08-17 2011-08-17 Method for comprehensive utilization of vanadium titanomagnetite CN102277462A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2011102366822A CN102277462A (en) 2011-08-17 2011-08-17 Method for comprehensive utilization of vanadium titanomagnetite

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2011102366822A CN102277462A (en) 2011-08-17 2011-08-17 Method for comprehensive utilization of vanadium titanomagnetite

Publications (1)

Publication Number Publication Date
CN102277462A true CN102277462A (en) 2011-12-14

Family

ID=45103189

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2011102366822A CN102277462A (en) 2011-08-17 2011-08-17 Method for comprehensive utilization of vanadium titanomagnetite

Country Status (1)

Country Link
CN (1) CN102277462A (en)

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102430472A (en) * 2011-12-26 2012-05-02 东北大学 Direct reduction-magnetic separation method of vanadium titanomagnetite
CN102839281A (en) * 2012-09-13 2012-12-26 莱芜钢铁集团有限公司 Method of producing titanium-bearing metallic pellets used for protecting blast furnace with rotary hearth furnace through direct reduction
CN103008098A (en) * 2012-12-25 2013-04-03 东北大学 Solid phase reinforcement reduction-magnetic separation method of vanadium titano-magnetite
RU2492245C1 (en) * 2012-02-28 2013-09-10 ООО "Управление и Инновации" Method of processing vanadium-bearing titanium-magnetite concentrate
CN103643033A (en) * 2013-12-06 2014-03-19 北京科技大学 Method for reducing titanium in direct reduction iron of seashore titanomagnetite by utilizing composite additive
CN103757199A (en) * 2013-12-05 2014-04-30 中国科学院过程工程研究所 Method for preparing vanadium-chromium-titanium slag by utilizing high-chromium vanadium titanium magnet concentrate
CN105039626A (en) * 2015-09-14 2015-11-11 北京科技大学 Vanadium slag preparation method
CN105087864A (en) * 2015-09-14 2015-11-25 北京科技大学 Method for directly producing titanium carbide from vanadium titano-magnetite
CN105112689A (en) * 2015-09-30 2015-12-02 中国地质科学院矿产综合利用研究所 Method for extracting titanium from vanadium-titanium magnetite
CN105907948A (en) * 2016-06-27 2016-08-31 东北大学 Magnetic separation method for low-grade chromium-containing vanadium titanium magnetite metalized pellet
CN105925744A (en) * 2016-05-10 2016-09-07 北京科技大学 Method for producing iron beads at low temperature through dust of iron and steel plant
CN106145187A (en) * 2015-04-24 2016-11-23 四川航都钛业科技有限公司 A kind of use vanadium titano-magnetite or technique that titanium chats is raw material production titanium dioxide
CN106498109A (en) * 2016-11-23 2017-03-15 昆明理工大学 A kind of method of grade titanium slag in use vanadium titano-magnetite concentrate production
CN106521139A (en) * 2017-01-05 2017-03-22 重庆大学 Method for preparing high titanium slag through low temperature reduction and separation of titanium-containing iron ore
CN106591600A (en) * 2017-01-05 2017-04-26 重庆大学 Method for preparing high-titanium slag through low-temperature gas-based reduction titanium-containing iron mineral powder
CN107244694A (en) * 2017-05-08 2017-10-13 朝阳金河粉末冶金材料有限公司 The method that acid-dissolved titanium slag is produced using low-grade ilmenite
CN107419090A (en) * 2017-07-04 2017-12-01 攀钢集团攀枝花钢铁研究院有限公司 A kind of separation method of vanadium titano-magnetite and application
CN107619896A (en) * 2017-09-27 2018-01-23 昆明理工大学 A kind of method added calcium powder and improve v-ti magnetite concentrate direct-reduction efficiency
CN108929951A (en) * 2018-08-07 2018-12-04 攀钢集团攀枝花钢铁研究院有限公司 A kind of utilization method of v-ti magnetite concentrate
CN108998659A (en) * 2018-09-10 2018-12-14 山东金岭矿业股份有限公司 With the process of water chestnut brown ocher and v-ti magnetite miberal powder processing pellet
CN109939817A (en) * 2019-03-29 2019-06-28 中冶北方（大连）工程技术有限公司 Two Product Process of titanomagnetite
CN110292989A (en) * 2019-07-04 2019-10-01 广东省资源综合利用研究所 A kind of method of beach sand titanium rough concentrate ferrotianium separation upgrading

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1065226A (en) * 1991-03-23 1992-10-14 冶金工业部长沙矿冶研究院 Get the method for micro alloy iron powder with the reduction grinding legal system
CN1236816A (en) * 1999-04-30 1999-12-01 中南工业大学 Technology for comprehensive utilization of V-Ti magnetite
CN1478908A (en) * 2002-08-29 2004-03-03 中国科学院过程工程研究所 Method and device for separating iron and titanium to prepare high titanium slag
CN1641045A (en) * 2005-01-07 2005-07-20 四川龙蟒集团有限责任公司 Method for separating and extracting metal element from varadium-titanium magnetite

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1065226A (en) * 1991-03-23 1992-10-14 冶金工业部长沙矿冶研究院 Get the method for micro alloy iron powder with the reduction grinding legal system
CN1236816A (en) * 1999-04-30 1999-12-01 中南工业大学 Technology for comprehensive utilization of V-Ti magnetite
CN1478908A (en) * 2002-08-29 2004-03-03 中国科学院过程工程研究所 Method and device for separating iron and titanium to prepare high titanium slag
CN1641045A (en) * 2005-01-07 2005-07-20 四川龙蟒集团有限责任公司 Method for separating and extracting metal element from varadium-titanium magnetite

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
张旭等: "含碳球团生产工艺参数优化及固结机理研究", 《过程工程学报》, vol. 9, 30 June 2009 (2009-06-30) *
张旭等: "铁碳复合球团直接还原试验研究", 《矿冶工程》, no. 02, 15 April 2009 (2009-04-15) *
徐萌等: "以转底炉技术利用钛资源的基础研究", 《有色金属（冶炼部分）》, no. 3, 30 June 2005 (2005-06-30) *

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102430472A (en) * 2011-12-26 2012-05-02 东北大学 Direct reduction-magnetic separation method of vanadium titanomagnetite
RU2492245C1 (en) * 2012-02-28 2013-09-10 ООО "Управление и Инновации" Method of processing vanadium-bearing titanium-magnetite concentrate
CN102839281B (en) * 2012-09-13 2015-08-05 莱芜钢铁集团有限公司 Rotary hearth furnace direct-reduction is utilized to produce the method for blast furnace protecting titaniferous metallized pellet
CN102839281A (en) * 2012-09-13 2012-12-26 莱芜钢铁集团有限公司 Method of producing titanium-bearing metallic pellets used for protecting blast furnace with rotary hearth furnace through direct reduction
CN103008098A (en) * 2012-12-25 2013-04-03 东北大学 Solid phase reinforcement reduction-magnetic separation method of vanadium titano-magnetite
CN103757199A (en) * 2013-12-05 2014-04-30 中国科学院过程工程研究所 Method for preparing vanadium-chromium-titanium slag by utilizing high-chromium vanadium titanium magnet concentrate
CN103757199B (en) * 2013-12-05 2016-02-17 中国科学院过程工程研究所 A kind of method utilizing high-chromic vanadium titanium magnet ore concentrate to prepare vanadium chromium titanium slag
CN103643033A (en) * 2013-12-06 2014-03-19 北京科技大学 Method for reducing titanium in direct reduction iron of seashore titanomagnetite by utilizing composite additive
CN106145187A (en) * 2015-04-24 2016-11-23 四川航都钛业科技有限公司 A kind of use vanadium titano-magnetite or technique that titanium chats is raw material production titanium dioxide
CN105087864A (en) * 2015-09-14 2015-11-25 北京科技大学 Method for directly producing titanium carbide from vanadium titano-magnetite
CN105039626A (en) * 2015-09-14 2015-11-11 北京科技大学 Vanadium slag preparation method
CN105112689A (en) * 2015-09-30 2015-12-02 中国地质科学院矿产综合利用研究所 Method for extracting titanium from vanadium-titanium magnetite
CN105925744B (en) * 2016-05-10 2018-05-01 北京科技大学 The method of Dust of Iron And Steel Works production pearl iron is utilized under a kind of low temperature
CN105925744A (en) * 2016-05-10 2016-09-07 北京科技大学 Method for producing iron beads at low temperature through dust of iron and steel plant
CN105907948A (en) * 2016-06-27 2016-08-31 东北大学 Magnetic separation method for low-grade chromium-containing vanadium titanium magnetite metalized pellet
CN106498109A (en) * 2016-11-23 2017-03-15 昆明理工大学 A kind of method of grade titanium slag in use vanadium titano-magnetite concentrate production
CN106498109B (en) * 2016-11-23 2017-08-29 昆明理工大学 A kind of method of grade titanium slag in use vanadium titano-magnetite concentrate production
CN106521139A (en) * 2017-01-05 2017-03-22 重庆大学 Method for preparing high titanium slag through low temperature reduction and separation of titanium-containing iron ore
CN106591600A (en) * 2017-01-05 2017-04-26 重庆大学 Method for preparing high-titanium slag through low-temperature gas-based reduction titanium-containing iron mineral powder
CN106591600B (en) * 2017-01-05 2019-03-29 重庆大学 A kind of method that low temperature gas-based reduction titanium-containing iron ore object powder prepares high titanium slag
CN107244694A (en) * 2017-05-08 2017-10-13 朝阳金河粉末冶金材料有限公司 The method that acid-dissolved titanium slag is produced using low-grade ilmenite
CN107419090A (en) * 2017-07-04 2017-12-01 攀钢集团攀枝花钢铁研究院有限公司 A kind of separation method of vanadium titano-magnetite and application
CN107619896A (en) * 2017-09-27 2018-01-23 昆明理工大学 A kind of method added calcium powder and improve v-ti magnetite concentrate direct-reduction efficiency
CN108929951A (en) * 2018-08-07 2018-12-04 攀钢集团攀枝花钢铁研究院有限公司 A kind of utilization method of v-ti magnetite concentrate
CN108998659A (en) * 2018-09-10 2018-12-14 山东金岭矿业股份有限公司 With the process of water chestnut brown ocher and v-ti magnetite miberal powder processing pellet
CN109939817A (en) * 2019-03-29 2019-06-28 中冶北方（大连）工程技术有限公司 Two Product Process of titanomagnetite
CN110292989A (en) * 2019-07-04 2019-10-01 广东省资源综合利用研究所 A kind of method of beach sand titanium rough concentrate ferrotianium separation upgrading

Similar Documents

Publication Publication Date Title
Rao et al. Carbothermic reduction of nickeliferous laterite ores for nickel pig iron production in China: a review
CN104911356B (en) A kind of solid waste gas ash, the comprehensive recycling process of vanadium slag containing zinc-iron
CN103468936B (en) A kind of refractory iron ore mine tailing pelletizing rotary kiln magnetizing roasting treatment process
CN102719676B (en) Method for rapidly reducing copper slags to produce iron-copper alloys in kiln in reducing atmosphere
CN103526051B (en) Method for separating iron, vanadium and titanium from schreyerite
CN101413057B (en) Method for efficiently separating low-ore grade and complicated iron ore
CN100478461C (en) Combined bottom rotating furnace-electric furnace process for treating red mud nickel ore to produce ferronickel
CN102912111B (en) Treatment method of oolitic hematite containing phosphorus
CN104404261B (en) The method of gold recovering, iron is synchronously reduced in the chloridizing roasting of a kind of refined gold ore cyaniding tailings
AU2008237569B2 (en) A process for concentration of nickel and joint production of iron red from nickel laterite
CN103667743B (en) Treatment method of laterite-nickel ore
CN102776376B (en) Method for recovering valuable metal from waste residue containing lead and zinc through wet-fire combination process
CN103290205B (en) A process of separating iron and titanium in seaside titanomagnetite via direct reduction roasting by using coal
CN101619371B (en) Method for recovering vanadium, titanium and iron from vanadium titanium magnetite
CN100469912C (en) Process for preparing nickel ferroalloy by melting and reducing laterite nickel ore
CN100494431C (en) Method for directly producing nickel-containing iron alloy from laterite and coal
CN1264993C (en) Method for separating and extracting metal element from varadium-titanium magnetite
CN105969981B (en) A kind of technique of vanadium titano-magnetite comprehensive utilization
CN103468961B (en) A kind of airtight cupola furnace process Steel Plant are containing zinc, lead powder dirt processing method
CN101386921B (en) Method for separating V-Ti-Fe fine powder
CN103805726B (en) A kind of method using rotary hearth furnace pearl iron process to fully utilize iron red mud
CN101073790B (en) Reduction-mill concentration treatment for different-type red-clay nickel mine
CN105925793B (en) Handle the method and system of zinc leaching residue
CN101838743B (en) Method for recovering ferrum, vanadium, chromium and gallium from vanadium extraction tailings
CN102899435A (en) Method for comprehensively using vanadium-titanium magnetite by shaft furnace reduction and electric furnace melting

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C12 Rejection of a patent application after its publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20111214