CN101954487A - Vanadium-titanium-iron polymetallic ore preparation method by direct reduction of coal derived and application thereof - Google Patents

Vanadium-titanium-iron polymetallic ore preparation method by direct reduction of coal derived and application thereof Download PDF

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Publication number
CN101954487A
CN101954487A CN2009102635732A CN200910263573A CN101954487A CN 101954487 A CN101954487 A CN 101954487A CN 2009102635732 A CN2009102635732 A CN 2009102635732A CN 200910263573 A CN200910263573 A CN 200910263573A CN 101954487 A CN101954487 A CN 101954487A
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vanadium
titanium
iron
powder
degrees centigrade
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冯辉阳
冯小龙
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冯辉阳
冯小龙
赵秉钧
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Priority to CN2009102635732A priority Critical patent/CN101954487A/en
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Abstract

The invention ensures that metal iron, metal titanium and metal vanadium of the Panzhihua vanadium-titanium-iron polymetallic ore can be effectively separated directly from concentrate fines without a smelting process by adopting the coal-based fire direct reduction process. The main technology of the method comprises the following steps: uniformly mixing the vanadium-titanium-iron concentrate fines with coke powder, additives and the like to pelletize; roasting the pellets in a tunnel furnace at the temperature of 1,050 and 1,300 DEG C; levigating, magnetically selecting, reducing and separating the formed metalized pellets, to reach separation of iron, titanium and vanadium, wherein the content of iron of iron powder is between 85 and 99 percent, the content of titanium of titanium residue is between 70 and 85 percent, and the content of vanadium of vanadium residue is between 80 and 98 percent. The separated metal is purer, and harmful components are lower, so the method of the invention has wider application and preferable market. The reduced iron powder can be used for steel making in a steel furnace instead of scalp steel and cast iron, and also can be used as powdered metallurgic raw materials; the reduced titanium powder can be used as a raw material of titanium sponge and titanium dioxide; and the reduced vanadium can be used as a raw material of vanadium iron alloy and vanadium pentoxide. The technology has the characteristics of short process flow, energy conservation, environmental protection, high resource comprehensive utilization, wide product application and the like.

Description

Coal-based direct reduction vanadium ferrotianium polymetallic ore preparation method and purposes
Technical field:
The present invention relates to a kind of metallurgical new technology, adopt the coal base reduction technology must be, but directly from fine ore, isolate the novel technique of high grade iron, high-grade titanium and high-grade vanadium through smelting procedure Panzhihua vanadium ferrotianium polymetallic ore.This technology has shortened traditional metallurgical technology flow process, has walked out a new road at aspects such as energy-saving and cost-reducing, low carbon emission reduction, expansion product ranges of application.
Background technology:
China is the relatively poorer country of an iron ore deposit, and iron and steel output is sure to occupy the No. 1 in the world, and annual production breaks through 500,000,000 tons, but there are the few in number of iron ore deposit in domestic iron and steel enterprise, and is most of by eating external import ore deposit.Though Panzhihua iron ore deposit reserves are abundant, it is many metals of vanadium ferrotianium mineral intergrowth, increases great difficulty for ironmaking and process for making, because valuable vanadium and titanium resources is difficult to extract, most of vanadium titanium runs off with slag simultaneously.This invention meaning just is that the sefstromite concentrate powder just do not separate Titanium, vanadium metal, metallic iron before entering smelting procedure, for simplifying smelting process, improve the steel products quality, improving the comprehensive utilization of resources rate and contribute.
Summary of the invention:
For fundamentally changing this present situation, the present invention adopts energy-saving and environmental protection (hydrofuge method), abbreviated system, adopts the coal-based direct reduction technology from the sefstromite concentrate powder, realizes that Titanium, vanadium metal separate effectively with metallic iron.Concrete preparation method is as follows:
The iron content 56% that the ore dressing plant is selected, contain titanium dioxide 11% and contain the fine ore of vanadium 0.6%, add a certain proportion of coke powder, carbon sodium salt additive and water, after batch mixer mixes, cause pellet to go into tunnel cave and carry out drying, roasting, entered the reducing zone through 8 hours behind 260 degrees centigrade~1000 degrees centigrade preheating and bakings, recovery time is 10 hours, reduction temperature is 1050 degrees centigrade~1300 degrees centigrade, push cooling zone through the metal pelletizing that reduction forms this moment, temperature drops to 240 degrees centigrade from 1300 degrees centigrade, and the cooling section time is 8 hours.The metallized pellet release tunnel cave that is cooled to 240 degrees centigrade enters heated oscillating screen, after removing cinder and gravitational dust collection, and the cinder Returning utilization, dedusting ash is returned batch plant batch mixing once more.Cooled metallized pellet enters cracker grinder preface, and it is following after wet magnetic separation, iron powder and titanium slag separate to be milled down to 120 orders, and separating iron powder acquisition iron-holder behind magnetic force dehydration, dry packing is 85~97%, the above chemical industry iron powder of granularity 120 orders.Titanium slag solution after magnetic separation separates after filtration, dry, packing back obtains titaniferous 70~85%, and granularity is the acid titanium slags of 20~100 purposes.Iron powder after the reduction adds in the electric reduction furnace that hydrogen shield is arranged once more, and a part of iron powder in reduction back forms the technical grade metallurgical powder; another part is isolated rich vanadium iron powder and is entered furnace melting; pour the Converter Oxigen Blowing vanadium extraction after the fusing into, produce the vanadic anhydride (V that vanadium content reaches more than 80~95%, granularity 100 orders are above 2O 5).
This invention and traditional coking, sintering, ironmaking, process for making ratio, but about energy efficient 40% is arranged sulfur dioxide 60% less, arranges solid slag 80% less, and the comprehensive utilization of resources rate improves about 20%.
Description of drawings:
Figure of description (Fig. 1) is coal-based direct reduction vanadium, titanium, iron polymetallic ore main flow artwork.
Specific embodiment:
Panzhihua City is climbed positive vanadium titanium industry and trade Co., Ltd and is adopted this invention technology to realize producing per year:
1) reducing metal pelletizing: produce 40000 tons per year.
2) chemical industry iron powder: produce 20000 tons per year.
3) metallurgical powder: produce 1.2 ten thousand tons per year.
4) acid titanium slag: produce 1.5 ten thousand tons per year.
5) vanadium powder (V 2O 5): produce 0.2 ten thousand tons per year.
Properties of product and index:
1) reducing metal pelletizing: bulb diameter 15~20mm; 3.2 tons/cubic metre of heap anharmonic ratioes are more than the intensity 2000KN.
Component target: TFe (full iron): 84%; WFe (metallic iron): 82%; S:0.05%; P:0.045%; There are not other harmful elements.
2) chemical industry iron powder:
Component target: TFe (full iron): 90%; WFe (metallic iron): 88%; S:0.04%; P:0.045%; Fineness: 60-120 order.
3) metallurgical powder:
Component target: TFe (full iron): 99%; WFe (metallic iron): 98.5%; S:0.04%; P; 0.035%; Fineness: more than 120 orders.
4) acid titanium slag:
Component target: TiO 2: 76%; TFe (full iron): 10%; Acidolysis rate: 90%; Granularity: 20~100 orders.
5) vanadic anhydride (V 2O 5):
Component target: V 2O 5: more than 95%; Granularity: more than 100 orders.
The product range of application:
1) reducing metal pelletizing: be used in high-quality steel smelting enterprise and do raw material.
2) chemical industry iron powder: be used in titanium dioxide enterprise as the acidolysis additive.
3) metallurgical powder: the various components of machine aspect that is used in magnetic material enterprise and sinter molding is used.
4) acid titanium slag: be used in titanium dioxide and raw material is done by titanium sponge enterprise.
5) vanadic anhydride (V 2O 5): do V-Ti and chemical industry raw material with vanadic anhydride.

Claims (3)

1. one kind with coal-based direct reduction vanadium ferrotianium polymetallic ore preparation method, it is characterized in that from slag, extracting the vanadium titanium without smelting procedure, but from iron content 56%, contain titanium dioxide 11%, contain the fine ore of vanadium 0.6%, adopt coal-based direct reduction technology that iron, titanium, three kinds of elements of vanadium are effectively separated, concrete preparation method is as follows:
1) after being made ball, sefstromite concentrate powder carbon sodium salt additive water mixing batch mixing goes into tunnel cave;
2) convert coal gas to bunker coal and send in the tunnel cave, through 8 hours preheating sections, temperature was controlled at 260 degrees centigrade~1000 degrees centigrade; The reduction section time is 10 hours, and temperature is controlled at 1050 degrees centigrade~1300 degrees centigrade; The cooling section time is 8 hours, and temperature is controlled at 1300 degrees centigrade~240 degrees centigrade; Form metallized pellet and come out of the stove this moment.
3) metallized pellet enters magnetic separation through screening, cooling, levigate after more than 100 orders, isolates high titanium slag and iron powder, and iron powder is through adding hydrogen shield once more behind the electrothermal reduction, and a part of rich vanadium powder enters furnace melting, Converter Oxigen Blowing is isolated vanadic anhydride; Another part forms the metallurgical grade powder through the iron powder of reduction once more.
2. properties of product and index:
3. product range of application:
1) reducing metal pelletizing: be used in the high-quality steel, raw material is done by special steel smelting enterprise.
2) chemical industry iron powder: be used in titanium dioxide enterprise as the acidolysis additive.
3) metallurgical powder: be used in the various component of machine productions of magnetic material enterprise and sinter molding.
4) acid titanium slag: be used in titanium dioxide and raw material is done by titanium sponge enterprise.
5) vanadic anhydride (V 2O 5): do V-Ti and chemical industry vanadic anhydride raw material.
CN2009102635732A 2009-12-25 2009-12-25 Vanadium-titanium-iron polymetallic ore preparation method by direct reduction of coal derived and application thereof Pending CN101954487A (en)

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103421925A (en) * 2013-08-26 2013-12-04 江苏大学 Method of preparing titanium dichloride slag
CN103433496A (en) * 2013-06-25 2013-12-11 吉林省华兴粉末冶金科技有限公司 Preparation system of iron powder for powder metallurgy
CN103602820A (en) * 2013-10-11 2014-02-26 河北钢铁股份有限公司承德分公司 Method for efficiently recovering iron, vanadium and chromium from extracted vanadium tailings
CN106623956A (en) * 2017-01-19 2017-05-10 重庆大学 Method for producing iron powder through semi-steel granulation method and efficiently utilizing steam
CN106756070A (en) * 2017-03-24 2017-05-31 江苏省冶金设计院有限公司 Process the method and system of vanadium-bearing slag of high calcium and high phosphor
CN106735281A (en) * 2016-12-28 2017-05-31 重庆大学 A kind of method that half steel produces iron powder
CN106854700A (en) * 2016-12-15 2017-06-16 江苏省冶金设计院有限公司 The method for preparing vanadium iron
CN110564956A (en) * 2019-07-19 2019-12-13 陕西有色冶金矿业集团有限公司 Smelting system for separating and enriching vanadium and producing pure iron from iron ore concentrate

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103433496A (en) * 2013-06-25 2013-12-11 吉林省华兴粉末冶金科技有限公司 Preparation system of iron powder for powder metallurgy
CN103421925A (en) * 2013-08-26 2013-12-04 江苏大学 Method of preparing titanium dichloride slag
CN103602820A (en) * 2013-10-11 2014-02-26 河北钢铁股份有限公司承德分公司 Method for efficiently recovering iron, vanadium and chromium from extracted vanadium tailings
CN106854700A (en) * 2016-12-15 2017-06-16 江苏省冶金设计院有限公司 The method for preparing vanadium iron
CN106735281A (en) * 2016-12-28 2017-05-31 重庆大学 A kind of method that half steel produces iron powder
CN106623956A (en) * 2017-01-19 2017-05-10 重庆大学 Method for producing iron powder through semi-steel granulation method and efficiently utilizing steam
CN106623956B (en) * 2017-01-19 2018-07-06 重庆大学 Half steel shotting produces the method that iron powder and high-efficiency steam utilize
CN106756070A (en) * 2017-03-24 2017-05-31 江苏省冶金设计院有限公司 Process the method and system of vanadium-bearing slag of high calcium and high phosphor
CN110564956A (en) * 2019-07-19 2019-12-13 陕西有色冶金矿业集团有限公司 Smelting system for separating and enriching vanadium and producing pure iron from iron ore concentrate

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