CN1283706A - Process for preparing Ti-enriched material from ilmenite concentrate - Google Patents
Process for preparing Ti-enriched material from ilmenite concentrate Download PDFInfo
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- CN1283706A CN1283706A CN 99115517 CN99115517A CN1283706A CN 1283706 A CN1283706 A CN 1283706A CN 99115517 CN99115517 CN 99115517 CN 99115517 A CN99115517 A CN 99115517A CN 1283706 A CN1283706 A CN 1283706A
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Abstract
A process for preparing the Ti-enriched material from ilmenite concentrate includes grinding ilmenite concentrate, mixing it wich additive and adhesive, sphericizing, solidifying, direct reducing at 1100-1150 deg.C in rotary kiln, grinding and magnetic separation to obtain Ti-enriched material and powdered iron concentrate. Its advantages include lower reducing temp lowered by 130-220 deg.C, high acidolysis performance of Ti-enriched material, high grade of TiO2 and high recovery rate of Fe and TiO2 increased by 20% and 5% respectively.
Description
The present invention relates to a kind of preparation method of rich titanium material, particularly relate to a kind of method with preparing Ti-enriched material from ilmenite concentrate and higher-grade iron powder concentrate.
Ilmenite is a kind of Important Mineral Resources that accounts for world's titanium material 85%, and its theory contains TiO
2Be 52.63%, when producing metal titanium and titanium white, usually its preconcentration must be become high-grade rich titanium material by ilmenite concentrate.Mainly contain electric furnace smelting process, selective chlorination, weak reduction-hydrochloric acid leaching process, weak reduction-sulfuric acid leaching, Reductive leaching and reduction grinding method etc. with the method that proposes after deliberation.Wherein the reduction grinding method is that ilmenite concentrate (commonly used is had a Na by allocating the sodium salt additive into
2SO
4, NaCl, Na
2CO
3) mill choosing behind solid state reduction, titanium is enriched in the nonmagnetic mine tailing, obtain higher-grade iron powder concentrate simultaneously." flotation is theoretical and select smelting to put into practice " P377-394 (metallurgical industry press that beam was shown through the winter, 1995.10), a kind of " producing the novel process-reduction grinding method of rich titanium material of solubility in acid and high-quality iron powder " disclosed, its critical process is that directly reduction and mill select separation of iron, titanium, directly reduction is that refinery coke and sodium sulfate that ilmenite concentrate adds certain weight ratio are carried out in tunnel furnace, the firing temperature of tunnel furnace is 1280～1320 ℃, the gained reducing material separates through the mill choosing, the rich titanium material of product solubility in acid is good, be suitable for raw material as sulfate process titanium dioxide, but exist the reduction temperature height, reducing atmosphere is poor, titanium, iron recovery not high (being respectively 86.1 8% and 66.6%), the low (TiO of rich titanium material grade
266.2%) shortcoming.
The purpose of this invention is to provide a kind of method of producing rich titanium material with ilmenite concentrate through the reduction grinding process, this method reduction temperature is low, can use direct reduction process for rotary kiln, the production efficiency height, can improve the product grade and the rate of recovery, realize the suitability for industrialized production that the reduction grinding legal system is got rich titanium material.
Technical scheme of the present invention comprises the preparation of ilmenite concentrate pelletizing successively, and rotary kiln for directly reducing separates with the magnetic separation that grinds of going back original product.
(1) preparation of ilmenite concentrate pelletizing: ilmenite concentrate is through regrinding, and fineness-0.074mm80～85% is allocated binding agent into and additive is made ball, and binding agent is sodium humate, and additive is Na
2B
4O
710H
2O.The fixed cold bound pellet method that adopts of pelletizing also can adopt preheating pelletizing method.The technological parameter of cold bound pellet method is: binding agent sodium humate addition is 1.0～2.0% (weight), additive Na
2B
4O
710H
2O addition 3～5% (weight) is made ball moisture content 8.5～9.5% (weight), 150～250 ℃ of green-ball drying and consolidating temperature, dry wind speed 0.6～0.9m/s.The technological parameter of preheated pellets method is: binding agent sodium humate addition 0.5～1.0% (weight), additive Na
2B
4O
710H
2O addition 3～5% (weight) is made ball moisture content 8.0～9.0% (weight), 850～950 ℃ of preheat temperatures, preheating wind speed 0.6～0.9m/s.
(2) rotary kiln for directly reducing: place rotary kiln directly to reduce the ilmenite pelletizing that makes, reduction is brown coal or sub-bituminous coal with coal, 1100～1150 ℃ of reduction temperatures, and 180～210 minutes recovery times, the C/Fe ratio is 0.8～1.0.
(3) go back original product and grind magnetic separation: back gained pelletizing carries out ore grinding, magnetic separation separates to reducing.Grinding fineness-0.074mm90～95%, magnetic separation field intensity 500～1000 Gausses, the gained nonmagnetics is rich titanium material, and the magnetic thing is the iron powder concentrate.The iron powder concentrate can be used for producing the steely iron powder through regrinding and reconcentration, or through hydrogen reduction, produces iron powder used in metallurgy.
The present invention adopts cold bound pellet/preheated pellets-direct reduction process for rotary kiln, is conducive to enhance productivity, and reduces cost energy efficient; Add Na in the reduction process
2B
4O
710H
2O can strengthen the reduction of ilmenite pelletizing, promotes growing up of iron crystal grain, realizes that titanium, iron grind thorough separation in the magnetic separation process going back original product, thereby significantly improves the ferrotianium rate of recovery and rich titanium material TiO
2Grade.Add Na with routine
2SO
4, NaCl and Na
2CO
3The reduction grinding method compare, reduction temperature reduces by 130～220 ℃, rich titanium material acidolysis performance is good, and TiO
2Grade improves about 10%, Fe, TiO
2The rate of recovery improves respectively about 20%, 5%.
Reach with reference to the accompanying drawings below performance and describe the present invention in detail.
Fig. 1 is a principle flow chart of the present invention.
Embodiment
One, with Pan Xi Taihe county mineral products ilmenite concentrate (TiO
248.10%, TFe34.50%) through regrinding, concentrate fineness-0.074mm80% allocates binding agent sodium humate 1.8% (weight) into, additive Na
2B
4O
710H
2Make ball behind the O 5.0% (weight), make ball moisture content 8.5% (weight), 200 ℃ of green-ball drying and consolidating temperature, dry wind speed 0.8m/s; The cooled agglomerated pellet direct-reduction is with brown coal or ub-bituminous coal, 1100 ℃ of reduction temperatures, 180 minutes recovery times, C/Fe is than 1.0, reducting pellet degree of metalization 91.50%, mog-0.074mm92.6%, magnetic separation field intensity 1000 Gausses, Magnetic Materials is iron grade 84.12% in the iron powder concentrate, and iron recovery 89.08%, nonmagnetics are TiO in the rich titanium material
2Grade 79.12%, the rate of recovery 91.17%, rich titanium material acidolysis rate＞96%.
Two, with Pan Xi Taihe county mineral products ilmenite concentrate (TiO
248.10%, TFe34.50%) through regrinding, concentrate fineness-0.074mm80% allocates binding agent sodium humate 0.5% (weight) into, additive Na
2B
4O
710H
2Make ball behind the O4.0% (weight), make ball moisture content 8.0% (weight), 900 ℃ of green-ball preheat temperatures, preheating wind speed 0.8m/s; Preheated pellets reduced with brown coal or ub-bituminous coal, 1100 ℃ of reduction temperatures, 180 minutes recovery times, C/Fe is than 1.0, reducting pellet degree of metalization 92.60%, mog-0.074mm93%, magnetic separation field intensity 1000 Gausses, iron grade 83.10% in the Magnetic Materials iron powder concentrate, iron recovery 87.68%.TiO in the rich titanium material of nonmagnetics
2Grade 78.86%, the rate of recovery 90.02%, rich titanium material acidolysis rate＞95%.
Three, with Pan Xi Taihe county mineral products ilmenite concentrate (TiO
248.10%, TFe34.50%) through regrinding, concentrate fineness-0.074mm80% allocates binding agent sodium humate 1.8% (weight) into, additive Na
2B
4O
710H
2Make ball behind the O3.0% (weight), make ball moisture content 8.5% (weight), 200 ℃ of green-ball drying and consolidating temperature, dry wind speed 0.8m/s; The cooled agglomerated pellet direct-reduction is with brown coal or ub-bituminous coal, 1100 ℃ of reduction temperatures, 180 minutes recovery times, C/Fe is than 1.0, reducting pellet degree of metalization 92.10%, mog-0.074mm94.12%, magnetic separation field intensity 500 Gausses, iron grade 83.5% in the Magnetic Materials iron powder concentrate, iron recovery 88.11%, TiO in the rich titanium material of nonmagnetics
2Grade 77.92%, the rate of recovery 90.96%, rich titanium material acidolysis rate＞95%.
Claims (1)
1, a kind of method with preparing Ti-enriched material from ilmenite concentrate, it is characterized in that: this method may further comprise the steps successively:
(1) preparation of ilmenite concentrate pelletizing: ilmenite concentrate is through regrinding, and fineness-0.074mm80～85% is allocated binding agent sodium humate and additive Na into
2B
4O
710H
2O makes ball, pelletizing fixed employing cold bound pellet method or preheated pellets method, and the technological parameter of cold bound pellet method is: binding agent sodium humate addition is 1.0～2.0% (weight), additive Na
2B
4O
710H
2O addition 3～5% (weight) is made ball moisture content 8.5～9.5% (weight), 150～250 ℃ of green-ball drying and consolidating temperature, dry wind speed 0.6～0.9m/s; The technological parameter of preheated pellets method is: binding agent sodium humate addition 0.5～1.0% (weight), additive Na
2B
4O
710H
2O addition 3～5% (weight) is made ball moisture content 8.0～9.0% (weight), 850～950 ℃ of preheat temperatures, preheating wind speed 0.6～0.9m/s;
(2) rotary kiln for directly reducing: reduction is brown coal or sub-bituminous coal with coal, 1100～1150 ℃ of reduction temperatures, and 180～210 minutes recovery times, the C/Fe ratio is 0.8～1.0;
(3) go back original product and grind magnetic separation: back gained pelletizing carries out ore grinding, magnetic separation separates to reducing, grinding fineness-0.074mm90～95%, and magnetic separation field intensity 500～1000 Gausses, the gained nonmagnetics is rich titanium material, and the magnetic thing is the iron powder concentrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99115517A CN1085737C (en) | 1999-08-10 | 1999-08-10 | Process for preparing Ti-enriched material from ilmenite concentrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN99115517A CN1085737C (en) | 1999-08-10 | 1999-08-10 | Process for preparing Ti-enriched material from ilmenite concentrate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1283706A true CN1283706A (en) | 2001-02-14 |
| CN1085737C CN1085737C (en) | 2002-05-29 |
Family
ID=5278463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN99115517A Expired - Fee Related CN1085737C (en) | 1999-08-10 | 1999-08-10 | Process for preparing Ti-enriched material from ilmenite concentrate |
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Cited By (15)
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|---|---|---|---|---|
| CN1320141C (en) * | 2005-06-16 | 2007-06-06 | 昆明理工大学 | Method for preparing rutile type titanium-rich material from primary titanium-rich material |
| CN100366756C (en) * | 2004-10-29 | 2008-02-06 | 宝山钢铁股份有限公司 | Titanium ore cold briquetting for protecting blast furnace and its production method |
| CN100591781C (en) * | 2004-09-21 | 2010-02-24 | 库姆巴资源有限公司 | Agglomeration of titania |
| CN101293220B (en) * | 2008-06-16 | 2010-04-14 | 中南大学 | Additive agent for iron-aluminum separation for high-alumina iron ore |
| CN102181669A (en) * | 2011-04-15 | 2011-09-14 | 中国地质科学院矿产综合利用研究所 | Method for preparing titanium-rich material from high-impurity ilmenite concentrate |
| CN101643805B (en) * | 2008-08-08 | 2012-08-22 | 苏永山 | New method for producing high-quality high titanium slag |
| CN102765750A (en) * | 2012-05-19 | 2012-11-07 | 河南佰利联化学股份有限公司 | Preparation method of titanium-rich material |
| CN103627834A (en) * | 2012-08-26 | 2014-03-12 | 程瑞国 | New technology for extracting iron and producing titanium slag by direct reduction of ilmenite |
| CN103643041A (en) * | 2013-12-20 | 2014-03-19 | 长沙市东新矿冶科技开发有限公司 | Novel technology for preparing low vanadium-titanium alloy comminuted steel shot through vanadium and titanium iron concentrate |
| CN103710551A (en) * | 2014-01-15 | 2014-04-09 | 河南佰利联化学股份有限公司 | Production method of rich-titanium material |
| CN106086478A (en) * | 2016-06-21 | 2016-11-09 | 昆明冶金研究院 | A kind of method utilizing Yunnan ilmenite concentrate to produce reduced iron powder coproduction rich-titanium material |
| CN109174318A (en) * | 2018-08-30 | 2019-01-11 | 攀钢集团攀枝花钢铁研究院有限公司 | The method that clinker containing titanium carbide removes iron |
| CN110093504A (en) * | 2019-05-15 | 2019-08-06 | 北京科技大学 | A kind of method and system using high calcium-magnesium-titanium heading preparation rich-titanium material |
| CN113355118A (en) * | 2021-06-04 | 2021-09-07 | 攀钢集团攀枝花钢铁研究院有限公司 | Production method of iron coke for titanium slag smelting and iron coke |
| CN114471959A (en) * | 2021-12-20 | 2022-05-13 | 中南大学 | Method for improving ilmenite flotation by using titanium dioxide waste liquid |
Families Citing this family (2)
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| CN100455683C (en) * | 2005-12-27 | 2009-01-28 | 云南冶金集团总公司技术中心 | Process for mfg., enriched titanium material by electric furnace titanium slag |
| CN101693948B (en) * | 2009-10-14 | 2011-02-02 | 中南大学 | Method for preparing steel smelting furnace materials from phosphorus-containing globulitic hematite |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS50145309A (en) * | 1974-05-14 | 1975-11-21 | ||
| CN1022579C (en) * | 1988-06-24 | 1993-10-27 | 冶金工业部攀枝花钢铁公司钢铁研究院 | Process for preparing reduced titanite ore powder |
| US5660805A (en) * | 1989-10-31 | 1997-08-26 | E. I. Du Pont De Nemours And Company | Method for beneficiating titanium-bearing material containing iron |
| BR9407644A (en) * | 1993-09-22 | 1997-01-21 | Rgc Mineral Sands Ltd | Process for introducing one or more reagents in a rotary and / or elongated oven and process and apparatus for treating titaniferous material |
-
1999
- 1999-08-10 CN CN99115517A patent/CN1085737C/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100591781C (en) * | 2004-09-21 | 2010-02-24 | 库姆巴资源有限公司 | Agglomeration of titania |
| CN100366756C (en) * | 2004-10-29 | 2008-02-06 | 宝山钢铁股份有限公司 | Titanium ore cold briquetting for protecting blast furnace and its production method |
| CN1320141C (en) * | 2005-06-16 | 2007-06-06 | 昆明理工大学 | Method for preparing rutile type titanium-rich material from primary titanium-rich material |
| CN101293220B (en) * | 2008-06-16 | 2010-04-14 | 中南大学 | Additive agent for iron-aluminum separation for high-alumina iron ore |
| CN101643805B (en) * | 2008-08-08 | 2012-08-22 | 苏永山 | New method for producing high-quality high titanium slag |
| CN102181669A (en) * | 2011-04-15 | 2011-09-14 | 中国地质科学院矿产综合利用研究所 | Method for preparing titanium-rich material from high-impurity ilmenite concentrate |
| CN102765750A (en) * | 2012-05-19 | 2012-11-07 | 河南佰利联化学股份有限公司 | Preparation method of titanium-rich material |
| CN103627834A (en) * | 2012-08-26 | 2014-03-12 | 程瑞国 | New technology for extracting iron and producing titanium slag by direct reduction of ilmenite |
| CN103643041A (en) * | 2013-12-20 | 2014-03-19 | 长沙市东新矿冶科技开发有限公司 | Novel technology for preparing low vanadium-titanium alloy comminuted steel shot through vanadium and titanium iron concentrate |
| CN103710551A (en) * | 2014-01-15 | 2014-04-09 | 河南佰利联化学股份有限公司 | Production method of rich-titanium material |
| CN103710551B (en) * | 2014-01-15 | 2014-12-24 | 河南佰利联化学股份有限公司 | Production method of rich-titanium material |
| CN106086478A (en) * | 2016-06-21 | 2016-11-09 | 昆明冶金研究院 | A kind of method utilizing Yunnan ilmenite concentrate to produce reduced iron powder coproduction rich-titanium material |
| CN109174318A (en) * | 2018-08-30 | 2019-01-11 | 攀钢集团攀枝花钢铁研究院有限公司 | The method that clinker containing titanium carbide removes iron |
| CN110093504A (en) * | 2019-05-15 | 2019-08-06 | 北京科技大学 | A kind of method and system using high calcium-magnesium-titanium heading preparation rich-titanium material |
| CN113355118A (en) * | 2021-06-04 | 2021-09-07 | 攀钢集团攀枝花钢铁研究院有限公司 | Production method of iron coke for titanium slag smelting and iron coke |
| CN113355118B (en) * | 2021-06-04 | 2022-06-03 | 攀钢集团攀枝花钢铁研究院有限公司 | Production method of iron coke for titanium slag smelting and iron coke |
| CN114471959A (en) * | 2021-12-20 | 2022-05-13 | 中南大学 | Method for improving ilmenite flotation by using titanium dioxide waste liquid |
| CN114471959B (en) * | 2021-12-20 | 2024-05-24 | 中南大学 | Method for improving ilmenite floatation by utilizing titanium white waste liquid |
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