CN1292083C - Method for producing high titanium iron - Google Patents

Method for producing high titanium iron Download PDF

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Publication number
CN1292083C
CN1292083C CN 02133779 CN02133779A CN1292083C CN 1292083 C CN1292083 C CN 1292083C CN 02133779 CN02133779 CN 02133779 CN 02133779 A CN02133779 A CN 02133779A CN 1292083 C CN1292083 C CN 1292083C
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Prior art keywords
rutile
granularity
aluminum
lime
furnace charge
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CN 02133779
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CN1483843A (en
Inventor
殷志双
易炳华
汪良文
杨希茂
陈桂英
王建新
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BEIHAI SPECIAL IRON ALLOY Co PANGANG GROUP
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BEIHAI SPECIAL IRON ALLOY Co PANGANG GROUP
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Abstract

The present invention discloses a Method for producing high titanium iron by an aluminum direct reduction method, which uses rutile, aluminum particles, lime and potassium chlorate as raw materials. The present invention is technically characterized in that the added rutile contains at least 87% of TiO2, more than 0.10% of C, at most 0.03% of S and at most 0.04% of P, and the quantity of materials whose granularity is from 0.1 to 0.5mm is more than 85%. The aluminum content of aluminum power is more than 98%, and the granularity of the aluminum power is less than 1mm. The added potassium chlorate contains more than 99.5% of KClO3, and the granularity of the potassium chlorate is less than 1mm. The present invention comprises the constituents by weight percentage of 1.0 share of rutile, 0.4 to 0.5 share of aluminum particle, 0.1 to 0.2 share of lime and 0.1 to 0.2 share of potassium chlorate, and the aluminum blending coefficient of furnace charge is controlled to be 1.06. Disposable charging is used, ignition at an upper part is used, and refined materials and electric heating are added. The unit heating quantity of the furnace charge is controlled to be from 3050 to 3150 KJ/Kg, and electric heating time is from 5 to 10 minutes. The product quality of the high titanium iron produced by the present invention is high, and the recovery rate of titanium is more than 76%. The present invention has the advantages of low production cost and obvious economic benefit.

Description

A kind of method of producing high ferrotianium
Affiliated technical field
The present invention relates to the production technical field of ferro-titanium, relate in particular to a kind of method of producing high ferrotianium with the aluminium direct-reduction process.
Background technology
Ferrotianium is divided into Three Estate, and the titaniferous amount is respectively: 25%~35%, 35%~45%, 65%~75%.In the prior art, adopt thermite process can only produce ferrotianium low, middle grade at present both at home and abroad.For example, China Jinzhou, Liaoyang, Jiangyin and high eyebrow ferroalloy works adopt thermite process, can only produce the titaniferous amount and be 30~45% ferrotianium.The main method of producing high ferrotianium is a remelting process, domesticly now produces the backward in technique of high ferrotianium, mainly is to adopt induction furnace production (capacity of equipment annual production<500t) with useless titanium material.
With the rutile is that the producer that raw material adopts perrin process to carry out the scale operation high ferrotitanium alloy does not have only some bench-scale testings or production.Disclosing " a kind of method with production of high titanium iron by use of aluminothermy " as Chinese patent (publication number CN1101080A), promptly is to be basic raw material with rutile, aluminum shot, lime, newly increase Potcrate again as raw material, utilizes production of high titanium iron by use of aluminothermy.This method technology is simple, saves the energy, can reduce production costs, and only needs simple equipment just can directly utilize cheap titanium ore to produce high-grade ferrotianium, has high economic benefit and social benefit.In addition on May 2nd, 1992 " metal Leader, the world " report: high eyebrow ferroalloy works are in " perrin process is smelted high ferrotianium " laboratory lab scale, and the titaniferous amount of product reaches more than 70%, and the rate of recovery reaches 78.82%.And for example Haining City one tame ferroalloy works bench-scale testing success, product satisfies ISO5054-1980 FeTi70Al5 standard, and wherein titanium content reaches 70%, and the rate of recovery of titanium reaches 67%.The external report that also has perrin process to produce high ferrotitanium alloy, the rate of recovery of titanium 〉=73%, the unit thermal value is 2700~3140KJ/Kg.
But in the prior art of producing ferrotianium, still had following some shortcomings: the rate of recovery of titanium is low; Production cycle is long, and high ferrotianium slag need be incubated more than 20 hours reactant with exsiccant lime after the smelting; There is the material splash; Ti, Si in the finished product, Al are wayward or the like.
Summary of the invention
The objective of the invention is at the deficiencies in the prior art that adopt production of high titanium iron by use of aluminothermy, and propose a kind of processing method of the new high ferrotianium of production, overcome defectives such as low and production cycle of titanium recovery rate is long.
The objective of the invention is to solve by following technical scheme:
A kind of method of producing high ferrotianium is to be raw material with rutile, aluminum shot, lime and Potcrate, the method that adopts perrin process to produce.
The rutile that adds contains TiO 2〉=87%, C<0.10%, S<0.03%, P<0.04%, its granularity is amount>85% of 0.1~0.5mm; Aluminium content>98% of aluminium powder, and its granularity is less than 1mm; Potcrate contains KClO 3>99.5%, and its granularity is less than 1mm.
Its raw material weight proportioning is: rutile: aluminum shot: lime: Potcrate=1.0: 0.4~0.5: 0.1~0.2: 0.1~0.2.
The aluminium coefficient of joining of furnace charge is controlled to be 1.06.
Feed way: adopt disposable reinforced.
The smelting mode: the top igniting adds the refining material, electrically heated.
It is characterized in that: (1) will be at the reflection kiln roasting before rutile and the mixing of other raw materials, and maturing temperature is 550~650 ℃; (2) the unit thermal value of described furnace charge is controlled at 3050~3150 KJ/Kg; (3) treat behind the adding refining material, to be aided with electrically heated in furnace charge, the electrically heated time is 5~10 minutes.
Further be, described lime with addition of the amount for described rutile 20%.
Technical solution of the present invention, the purpose of rutile being carried out roasting be, removes organic impurity and moisture, and utilize the sensible heat in the rutile after the roasting to increase the temperature of mixture charge, so as to improving the unit thermal value of furnace charge, shortened in the cycle of reduction reaction.The rutile maturing temperature that the present invention selects is 550~650 ℃.
If the unit thermal value relative deficiency of furnace charge then causes the reduction reaction of titanium insufficient, the flowability of slag is poor, and slag iron separates bad, is unfavorable for the titanium sedimentation, and titanium content descends in the alloy; If when the unit thermal value of furnace charge is high, cause the reduction reaction of titanium violent, cause splash thereupon smelting furnace material high degree of agitation, increased TiO 2Generate the trend of TiO, the titanium reduction is reduced, titanium alloy descends.Therefore, the unit thermal value of furnace charge is controlled at 3050~3150KJ/Kg among the present invention.
The principle that perrin process is smelted high ferrotianium is, adopts aluminium as reductive agent, is thermopositive reaction, and provides thermal source for reaction.The present invention is aided with electrically heated, when auxiliary heat is provided, can also make the slag long period be in molten state, the sinking of favourable and alloying pellet.
Because TiO is a strong basicity, only in enough slags, when promptly basicity is greater than TiO, just can make TiO be reduced into titanium.Facts have proved, amount of lime with addition of the amount>20% o'clock, the rate of recovery of titanium does not have considerable change.So amount of lime is preferably 20% of rutile with addition of amount among the present invention.
The chemical ingredients of the high ferrotianium that employing the present invention produces is (seeing the following form 1):
The chemical ingredients of table 1 high ferrotitanium alloy of the present invention (wt%)
The present invention compared with prior art has following advantage:
1, utilizes the quality product height of the high ferrotianium that the present invention produces.
When 2, adopting the present invention to carry out scale operation, the rate of recovery of titanium is more than 76%.
3, production cost is low, has remarkable economic efficiency.
Embodiment
Below in conjunction with embodiment technical solution of the present invention is further described.
Embodiment 1
A kind of method of producing high ferrotianium is to be raw material with rutile, aluminum shot, lime and Potcrate, the method that adopts perrin process to produce high ferrotianium.
The rutile that adds contains TiO 2Be 90%, C<0.02%, S<0.03%, P<0.04%, its granularity is that the amount of 0.1~0.5mm is 86%; The aluminium content 98% of aluminium powder, and its granularity is less than 1mm; The Potcrate that is added contains KClO 399.6%, and its granularity is less than 1mm.
Proportioning raw materials (wt%) is: rutile: aluminum shot: lime: Potcrate=1.0: 0.4~0.5: 0.1~0.2: 0.2.
The aluminium coefficient of joining of furnace charge is controlled to be 1.06.
Feed way: adopt disposable reinforced;
The smelting mode: the top igniting adds the refining material, electrically heated.
Will be before rutile and the mixing of other raw materials at the reflection kiln roasting, maturing temperature is 560 ℃.
The unit thermal value of furnace charge is controlled at 3080KJ/Kg.
After treating to add fine fodder in furnace charge, be aided with electrically heated, the electrically heated time is 10 minutes.
Embodiment 2
A kind of method of producing high ferrotianium is to be raw material with rutile, aluminum shot, lime and Potcrate, the method that adopts perrin process to produce high ferrotianium.
The rutile that adds contains TiO 2Be 88%, C<0.02%, S<0.03%, P<0.04%, its granularity is that the amount of 0.1~0.5mm is 90%; The aluminium content 99% of aluminium powder, and its granularity is less than 1mm; The Potcrate that is added contains KClO 399.6%, and its granularity is less than 1mm.
Proportioning raw materials (wt%) is: rutile: aluminum shot: lime: Potcrate=1.0: 0.4~0.5: 0.1~0.2: 0.2.
The aluminium coefficient of joining of furnace charge is controlled to be 1.06.
Feed way: adopt disposable reinforced;
The smelting mode: the top igniting adds the refining material, electrically heated.
Will be before rutile and the mixing of other raw materials at the reflection kiln roasting, maturing temperature is 600 ℃.
The unit thermal value of furnace charge is controlled at 3100KJ/Kg.
After treating to add fine fodder in furnace charge, be aided with electrically heated, the electrically heated time is 8 minutes.
Embodiment 3
A kind of method of producing high ferrotianium is to be raw material with rutile, aluminum shot, lime and Potcrate, the method that adopts perrin process to produce high ferrotianium.
The rutile that adds contains TiO 2Be 90%, C<0.02%, S<0.03%, P<0.04%, its granularity is that the amount of 0.1~0.5mm is 90%; The aluminium content 98% of aluminium powder, and its granularity is less than 1mm; The Potcrate that is added contains KClO 399.5%, and its granularity is less than 1mm.
Proportioning raw materials (wt%) is: rutile: aluminum shot: lime: Potcrate=1.0: 0.4~0.5: 0.1~0.2: 0.2.
The aluminium coefficient of joining of furnace charge is controlled to be 1.06.
Feed way: adopt disposable reinforced;
The smelting mode: the top igniting adds the refining material, electrically heated.
Will be before rutile and the mixing of other raw materials at the reflection kiln roasting, maturing temperature is 620 ℃.
The unit thermal value of furnace charge is controlled at 3080KJ/Kg.
After treating to add fine fodder in furnace charge, be aided with electrically heated, the electrically heated time is 9 minutes.
The chemical ingredients and the rate of recovery of the high ferrotianium that embodiment 1,2 and 3 produces see Table 2, all meet the requirement of ISO5054-1980 FeTi70Al5 standard:
The chemical ingredients of the high ferrotianium of table 2 and the rate of recovery

Claims (2)

1, a kind of method of producing high ferrotianium is to be raw material with rutile, aluminum shot, lime and Potcrate, the method that adopts perrin process to produce, and the rutile of adding contains TiO 2〉=87%, C<0.10%, S<0.03%, P<0.04%, its granularity is amount>85% of 0.1~0.5mm; Aluminium content>98% of aluminium powder, and its granularity is less than 1mm; Potcrate contains KClO 3>99.5%, and its granularity is less than 1mm; Its raw material weight proportioning is: rutile: aluminum shot: lime: Potcrate=1.0: 0.4~0.5: 0.1~0.2: 0.1~0.2; The aluminium coefficient of joining of furnace charge is controlled to be 1.06; Feed way: adopt disposable reinforced; The smelting mode: the top igniting, add the refining material, electrically heated is characterized in that:
(1) will be before rutile and the mixing of other raw materials at the reflection kiln roasting, maturing temperature is 550~650 ℃;
(2) the unit thermal value of described furnace charge is controlled at 3050~3150KJ/Kg;
(3) treat behind the adding refining material, to be aided with electrically heated in furnace charge, the electrically heated time is 5~10 minutes.
2, a kind of method of producing high ferrotianium according to claim 1 is characterized in that: described lime with addition of the amount for described rutile 20%.
CN 02133779 2002-09-17 2002-09-17 Method for producing high titanium iron Expired - Fee Related CN1292083C (en)

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Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1323183C (en) * 2005-04-15 2007-06-27 李春德 Method for jpreparing high ferrotitanium in use for smelting steel
CN100376694C (en) * 2006-04-04 2008-03-26 梅卫东 Method for preparing ferrotitanium by molten titanium slag
CN100371481C (en) * 2006-04-11 2008-02-27 李春德 Method for producing high titanium iron contg. low oxygen and low nitrogen
CN100376701C (en) * 2006-04-17 2008-03-26 海南高钛科技股份有限公司 Method for preparing low-silicon high-titanium ferroalloy employing lower ignition method
CN101078065B (en) * 2007-05-31 2010-05-19 攀枝花市银江金勇工贸有限责任公司 Method for preparing series titanium-iron alloy by smelting titanium raw material
CN100507036C (en) * 2007-06-08 2009-07-01 东北大学 Vacuum induction smelting producing high-quality high-titanium iron method based on aluminothermic reduction
CN106399753B (en) * 2016-10-12 2017-12-01 攀枝花学院 Titanium aluminum vanadium alloy material and preparation method thereof

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