CN1837390A - Method for preparing low-silicon high-titanium ferroalloy employing lower ignition method - Google Patents
Method for preparing low-silicon high-titanium ferroalloy employing lower ignition method Download PDFInfo
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- CN1837390A CN1837390A CN 200610074556 CN200610074556A CN1837390A CN 1837390 A CN1837390 A CN 1837390A CN 200610074556 CN200610074556 CN 200610074556 CN 200610074556 A CN200610074556 A CN 200610074556A CN 1837390 A CN1837390 A CN 1837390A
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Abstract
The invention discloses a low-Si high-Ti iron which is produced through lower ignition method, and the raw materials include red schorl, aluminum dust, lime, sodium carbonate, fluorite, potassium chlorate and powdered iron ore, the depurating agents include powdered iron ore, magnesite powder and fluorite, and the ignition agents includes magnesite powder and sphene.
Description
Technical field
The present invention relates to a kind of production method of metal alloy, relate in particular to a kind of production method of producing low-silicon high-titanium.
Background technology
Ferrotianium is divided into Three Estate according to institute's titaniferous amount, and its titaniferous amount is respectively 25%～35%, and 35%～45%, 65%～75%.Characteristics such as that high ferrotianium has is corrosion-resistant, high temperature resistant, wear-resisting, light specific gravity, it is the important raw and processed materials of smelting special steel, structure iron and special alloy, it is irreplaceable important raw and processed materials in space flight, aviation, the weapon industry, and be widely used in civilian industries such as oil, chemical industry, machinery, naval vessel, ocean, electric power, medical device, demonstrate its critical role in social development.
Producing the ferrotianium product both at home and abroad mainly is to adopt perrin process, electric furnace process or vacuum method etc., wherein 30%, 40% ferro-titanium generally adopts perrin process production, the 70# high ferrotitanium alloy then adopts electric furnace process or vacuum method to smelt with the useless titanium material of metal and produces, the power consumption height, cost is big, and environmental pollution is serious.
Be that raw material adopts perrin process production high ferrotitanium alloy only to be in some bench-scale testings or production at present with the rutile, this method technology is simple, save the energy, can reduce production costs, still come with some shortcomings but adopt perrin process to produce high ferrotianium at present: the rate of recovery of titanium is low; There is material splash phenomenon in the smelting process; Impurity in the finished product is the too high levels of silicon, oxygen especially, product quality that influence obtains for starting material production with the ferro-titanium or the like.Some technological process also adds metal titanium to improve the rate of recovery of titanium in order to improve the titanium content in the finished product in smelting process.
Summary of the invention
The objective of the invention is to propose a kind of processing method of new production low-silicon high-titanium at adopting perrin process to produce the high problem of impurity in the prior art of high ferrotianium.
In order to achieve the above object, the technical solution adopted in the present invention is:
1, with rutile, powdered iron ore, lime, aluminium powder, soda ash, fluorite, Potcrate is starting material, and respectively to rutile, powdered iron ore, lime carries out roasting, make suboxide become high oxide, increase the exothermic heat of reaction amount, to aluminium powder, soda ash, fluorite, Potcrate is dried processing, guarantee the drying of material, avoid the splash phenomenon occurring owing to material contains moisture in the fusion process, then above-mentioned starting material mixing and stirring is obtained compound, stand-by, in compound, allocate lime and soda ash into and can cause the strong basicity slag, make acidic oxide silicon-dioxide and basic oxide be combined into silicate, the reduction of the silicon-dioxide in the restriction slag reduces the silicone content in the high ferrotianium of finished product.Powdered iron ore, magnesium powder, fluorite mixing and stirring is as refining agent, stand-by.Powdered iron ore, magnesium powder, nitre mixing and stirring is as priming mixture, stand-by.
2, be that material is made a bottom of a pan shape sand nest with magnesia, then shaft furnace is installed on the sand nest and forms smelting furnace, then partially mixed material is put into furnace bottom, put into priming mixture (powdered iron ore, magnesium powder, nitre mixture) again, electric arc is ignited, allow the interior compound of stove react, after forming slag bath in the stove, continue to add compound, in the process of feeding in raw material, allow remain one deck compound in the stove on the top of the slag to smelting furnace.Adopt earlier in the furnace bottom igniting and smelt and then progressively reinforced mode of smelting can be got rid of gases such as oxygen in the compound, nitrogen effectively, reduce impurity, increase the quality of finished product, and prevent from smelting process, to occur the furnace charge splash.After finishing, the smelting reaction in the short period of time refining agent (mixture of powdered iron ore, magnesium powder, fluorite) that mixes is joined in the smelting furnace, allow the magnesium powder that powdered iron ore is reduced into metallic iron, metallic iron combines with particulate titanium in being suspended in slag, is deposited in the ferrotianium below the stove to improve the rate of recovery; Fluorite mainly plays the effect that promotes the slag slow setting, reduces slag viscosity, helps iron and titanium particulate precipitation, and fluorite can also continue to suppress the reduction of the silicon-dioxide in the slag in addition, to strengthen the silicon effect of falling in the smelting process.After smelting finishes, pass through slagging, cool off, go furnace shell, cool off again, obtain low-silicon high-titanium.
The method technology of production low-silicon high-titanium provided by the present invention is simple, less investment, cost is low, under the condition of not adding metal titanium, improve the rate of recovery of titanium effectively, quality of finished product good, impurity is few, obnoxious flavour is few, silicon, carbon, phosphorus, sulphur content are lower, has solved perrin process effectively and has produced the higher technical problem of high ferrotianium impurity.
Embodiment
The invention will be further described below in conjunction with embodiment.
The method of production low-silicon high-titanium proposed by the invention comprises blending process and smelting process.
1, blending process is with rutile, powdered iron ore, lime, aluminium powder, soda ash, fluorite, Potcrate is starting material, and respectively to rutile, powdered iron ore, lime carried out roasting 1～2 hour, maturing temperature is 800～900 ℃, make suboxide become high oxide, increase the exothermic heat of reaction amount, with aluminium powder, soda ash, fluorite, Potcrate was dried under 80～120 ℃ temperature 1～2 hour, to guarantee the drying of material, avoid the splash phenomenon occurring owing to material contains moisture in the fusion process, then with rutile, powdered iron ore, lime, aluminium powder, soda ash, fluorite, Potcrate is mixed in proportion to stir and obtains compound, stand-by, raw-material proportioning is a rutile: aluminium powder: lime: soda ash: fluorite: Potcrate: powdered iron ore=1.0: 0.45～0.55: 0.15～0.23: 0.01～0.08: 0.01～0.05: 0.18～0.25: 0.01～0.08.Powdered iron ore, magnesium powder, fluorite are stirred as refining agent by 1: 0.3～0.6: 0.15～0.30 mixed, stand-by.Powdered iron ore, magnesium powder, nitre are stirred as priming mixture by 1.0: 1.0: 1.0 mixed, stand-by.
Raw-material technical qualification are as follows:
Contain TiO in the rutile
2〉=94%; C≤0.05%; S≤0.03%; P≤0.03%; SiO
2≤ 2.0%; Granularity≤1.0mm.
Granularity≤the 3.0mm of aluminium powder.
Contain CaO 〉=85% in the lime, granularity≤2.0mm.
Contain Na in the soda ash
2CO
3〉=85%, granularity≤1.0mm.
Contain CaF in the fluorite
2〉=90%, granularity≤2.0mm.
Granularity≤the 1.0mm of Potcrate.
Contain Fe 〉=63% in the powdered iron ore, granularity≤1.0mm.
Granularity≤the 2.0mm of magnesium powder.
Nitre contains NaNO
3〉=97%, granularity≤1.0mm.
2, smelting process is that material is made a bottom of a pan shape sand nest with magnesia, then shaft furnace is installed on the sand nest and forms smelting furnace, put into the mixed with little amount material at furnace bottom, put into priming mixture (powdered iron ore, magnesium powder, nitre mixture) again, electric arc is ignited, allow the interior compound of stove react, after forming slag bath in the stove, continue to add compound, in the process of feeding in raw material, allow remain one deck compound in the stove on the top of the slag to smelting furnace.In 20～30 seconds time, the refining agent (mixture of powdered iron ore, magnesium powder, fluorite) that mixes is joined in the smelting furnace after reaction is finished when smelting, allow the magnesium powder that powdered iron ore is reduced into metallic iron, metallic iron combines with particulate titanium in being suspended in slag, is deposited in the ferrotianium below the stove to improve the rate of recovery; Fluorite mainly plays the effect that promotes the slag slow setting, reduces slag viscosity, helps iron and titanium particulate precipitation, and fluorite can also continue to suppress the reduction of the silicon-dioxide in the slag in addition, to strengthen the silicon effect of falling in the smelting process.Finish static 8～10 minutes of back at smelting, open the runoff notch slagging, cool off and remove furnace shell after 18～20 hours, cooled off again 4～5 hours, play ingot then, be cooled to normal temperature, obtain low-silicon high-titanium.
Embodiment 1
The batching: with rutile, aluminium powder, lime, soda ash, fluorite, Potcrate, powdered iron ore by 1.0: 0.5: 0.16: 0.035: 0.035: 0.18: 0.08 mixed stirs and obtains compound, and was stand-by.Refining agent be (is base of calculation with per 100 kilograms of rutile) with 6 kilograms of powdered iron ore, 2 kilograms in magnesium powder, 1 kilogram of mixing and stirring of fluorite, stand-by.Priming mixture is with 0.5 kilogram of powdered iron ore, 0.5 kilogram in magnesium powder, and 0.5 kilogram of mixing and stirring of nitre, stand-by.
Operation: with magnesia is that material is made a bottom of a pan shape sand nest, then shaft furnace is installed on the sand nest and forms smelting furnace, put into the mixed with little amount material at furnace bottom, put into priming mixture again, electric arc is ignited, allow the interior compound of stove react, after forming slag bath in the stove, continue to add compound, in the process of feeding in raw material, allow remain one deck compound in the stove on the top of the slag to smelting furnace.The refining agent that mixes joined in the smelting furnace in 25 seconds after reaction is finished when smelting.Finish static 9 minutes of back at smelting, open the runoff notch slagging, cool off and remove furnace shell after 18 hours, cooled off again 5 hours, play ingot then, be cooled to normal temperature, smart then positive loading barrel packaging.
Embodiment 2
The batching: with rutile, aluminium powder, lime, soda ash, fluorite, Potcrate, powdered iron ore by 1.0: 0.5: 0.16: 0.065: 0.025: 0.18: 0.08 mixed stirs and obtains compound, and was stand-by.Refining agent be (is base of calculation with per 100 kilograms of rutile) with 6 kilograms of powdered iron ore, 3 kilograms in magnesium powder, 1 kilogram of mixing and stirring of fluorite, stand-by.Priming mixture is with 0.5 kilogram of powdered iron ore, 0.5 kilogram in magnesium powder, and 0.5 kilogram of mixing and stirring of nitre, stand-by.
Operation: with magnesia is that material is made a bottom of a pan shape sand nest, then shaft furnace is installed on the sand nest and forms smelting furnace, put into the mixed with little amount material at furnace bottom, put into priming mixture again, electric arc is ignited, allow the interior compound of stove react, after forming slag bath in the stove, continue to add compound, in the process of feeding in raw material, allow remain one deck compound in the stove on the top of the slag to smelting furnace.The refining agent that mixes joined in the smelting furnace in 30 seconds after reaction is finished when smelting.Finish static 10 minutes of back at smelting, open the runoff notch slagging, cool off and remove furnace shell after 20 hours, cooled off again 4 hours, play ingot then, be cooled to normal temperature, smart then positive loading barrel packaging.
The ferrotianium chemical ingredients master meter that embodiment 1,2 is produced
Claims (4)
1, a kind of method that adopts the lower point pyrogenic process to produce low-silicon high-titanium comprises blending process and smelting process, it is characterized in that:
1) described blending process is meant that with rutile, powdered iron ore, lime, aluminium powder, soda ash, fluorite, Potcrate be starting material, rutile, powdered iron ore, lime, aluminium powder, soda ash, fluorite, Potcrate is mixed in proportion to stir obtains compound, stand-by, raw-material proportioning is a rutile: aluminium powder: lime: soda ash: fluorite: Potcrate: powdered iron ore=1.0: 0.45～0.55: 0.15～0.23: 0.01～0.08: 0.01～0.05: 0.18～0.25: 0.01～0.08; Powdered iron ore, magnesium powder, fluorite are stirred as refining agent by 1: 0.3～0.6: 0.15～0.30 mixed, stand-by; Powdered iron ore, magnesium powder, nitre are stirred as priming mixture by 1.0: 1.0: 1.0 mixed, stand-by;
2) described smelting process is meant with magnesia to be that material is made a bottom of a pan shape sand nest, then shaft furnace is installed on the sand nest and forms smelting furnace, put into the mixed with little amount material at furnace bottom, put into priming mixture again, electric arc is ignited, allow the interior compound of stove react, in stove, continue to add compound behind the formation slag bath to smelting furnace; In 20～30 seconds time, the refining agent that mixes is joined in the smelting furnace after reaction is finished when smelting; Finish static 8～10 minutes of back at smelting, open the runoff notch slagging, cool off and remove furnace shell after 18～20 hours, cooled off again 4～5 hours, play ingot then, be cooled to normal temperature, obtain low-silicon high-titanium.
2, produce the method for low-silicon high-titanium according to the said employing lower point of claim 1 pyrogenic process, it is characterized in that: contain TiO in the rutile in the used starting material
2〉=94%, C≤0.05%, S≤0.03%, P≤0.03%, SiO
2≤ 2.0%, granularity≤1.0mm; Granularity≤the 3.0mm of aluminium powder; Contain CaO 〉=85% in the lime, granularity≤2.0mm; Contain Na in the soda ash
2CO
3〉=85%, granularity≤1.0mm; Contain CaF in the fluorite
2〉=90%, granularity≤2.0mm; Granularity≤the 1.0mm of Potcrate; Contain Fe 〉=63% in the powdered iron ore, granularity≤1.0mm; Granularity≤the 2.0mm of magnesium powder; Nitre contains NaNO
3〉=97%, granularity≤1.0mm.
3, produce the method for low-silicon high-titanium according to the said employing lower point of claim 1 pyrogenic process, it is characterized in that: respectively rutile, powdered iron ore, lime were carried out roasting 1～2 hour before starting material mix, maturing temperature is 800～900 ℃.
4, produce the method for low-silicon high-titanium according to the said employing lower point of claim 1 pyrogenic process, it is characterized in that: before starting material mix, respectively aluminium powder, soda ash, fluorite, Potcrate were dried under 80～120 ℃ temperature 1～2 hour.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| CN103555974A (en) * | 2013-10-24 | 2014-02-05 | 攀枝花学院 | Method of producing high-titanium-iron alloy by virtue of aluminum-magnesium process |
| CN104789850A (en) * | 2015-03-18 | 2015-07-22 | 镇江德宝冶金材料有限公司 | Preparation method of low-aluminum-consumption titanium-iron alloy |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1017809B (en) * | 1990-02-23 | 1992-08-12 | 巩县金红石厂 | Titanium silicon and process thereof |
| CN1017811B (en) * | 1990-02-23 | 1992-08-12 | 巩县金红石厂 | Low-aluminium silicon-titanium-iron alloy and its producing process |
| CN1017810B (en) * | 1990-02-23 | 1992-08-12 | 巩县金红石厂 | Producing process of high-titanium titanium-iron alloy |
| CN1101080A (en) * | 1993-09-28 | 1995-04-05 | 峨眉山市汇海经济技术开发公司 | Method for production of high titanium iron by use of aluminothermy |
| US6136060A (en) * | 1998-10-16 | 2000-10-24 | Joseph; Adrian A. | Low cost high speed titanium and its alloy production |
| CN1292083C (en) * | 2002-09-17 | 2006-12-27 | 攀钢集团北海特种铁合金公司 | Method for producing high titanium iron |
| CN1323183C (en) * | 2005-04-15 | 2007-06-27 | 李春德 | Method for jpreparing high ferrotitanium in use for smelting steel |
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2006
- 2006-04-17 CN CNB2006100745560A patent/CN100376701C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN103555974A (en) * | 2013-10-24 | 2014-02-05 | 攀枝花学院 | Method of producing high-titanium-iron alloy by virtue of aluminum-magnesium process |
| CN103555974B (en) * | 2013-10-24 | 2016-03-09 | 攀枝花学院 | Magnalium method produces high ferrotitanium alloy |
| CN104789850A (en) * | 2015-03-18 | 2015-07-22 | 镇江德宝冶金材料有限公司 | Preparation method of low-aluminum-consumption titanium-iron alloy |
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