CN1323183C - Method for jpreparing high ferrotitanium in use for smelting steel - Google Patents
Method for jpreparing high ferrotitanium in use for smelting steel Download PDFInfo
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- CN1323183C CN1323183C CNB2005100462694A CN200510046269A CN1323183C CN 1323183 C CN1323183 C CN 1323183C CN B2005100462694 A CNB2005100462694 A CN B2005100462694A CN 200510046269 A CN200510046269 A CN 200510046269A CN 1323183 C CN1323183 C CN 1323183C
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Abstract
The present invention discloses a method for preparing high-titanium ferroalloy for smelting steel. The present invention comprises: rutile (or high titanium slag) which is baked to 400 500 DEG C, iron scale, lime, aluminium-magnesium alloy and potassium chlorate are proportionally and uniformly mixed, when the temperature of the mixed material is from 160 to 200 DEG C, the mixed material is added in a smelting furnace, igniting agents are put on the mixed material, the igniting agents are ignited, and the mixed material is smelted by means of the heat of the chemical reaction of the mixed material in the smelting furnace and the sensible heat of the mixed material. The present invention is characterized in that aluminium and magnesium are used as reductants, the unit thermal effect of the mixed material in the smelting furnace is from 3000 to 35000 KJ/Kg, the ignition method is adopted, the key raw material rutile has rich resource and low price, and smelting is carried out without electric power; the high-titanium ferroalloy for smelting steel has stable quality, low impurity content, low cost and good economic benefit.
Description
Technical field
The present invention relates to a kind of smelting special iron alloy of steel, be specially the preparation method of a kind of smelting of steel with high ferrotianium.
Background technology
Ferrotianium is a kind of broad-spectrum iron alloy, alloying constituent, reductor, air release agent during mainly as the smelting of steel.Ferrotianium can be divided into by the difference of its titaniferous amount: common ferrotianium (FeTi30) contains Ti25～35%, and middle ferrotianium (FeTi40) contains Ti35～45%, and high ferrotianium (FeTi70) contains Ti65～75%.In the smelting steel of metallurgy industry, the ferrotianium that uses between longer-term is common ferrotianium, and common ferrotianium titaniferous amount is lower, the foreign matter content height, the common ferrotianium amount that adds during the smelting of steel is many, in steel melting furnace fusing slow, tap to tap time is long, foreign matter content height in the product.Use the existing deficiency of common ferrotianium during for the smelting that solves steel, iron and steel enterprise brings into use high ferrotianium to carry out the smelting of steel in recent years, because titaniferous amount height in the high ferrotianium, therefore smelt the identical product made from steel of titaniferous amount, employed high ferrotianium amount will significantly reduce that (common ferrotianium is amounted to into the benchmark ton by Ti25%, high ferrotianium is amounted to into the benchmark ton by containing Ti65%, uses the high ferrotianium of 1 benchmark ton just to be equivalent to use the common ferrotianium of 2.6 benchmark tons).Because high ferrotianium consumption is few, material melts in steel melting furnace soon, has shortened tap to tap time, and the foreign matter content of bringing in the steel only is with 1/3 of common ferrotianium, improved the quality of steel, therefore the smelting of using high ferrotianium to carry out steel in steel industry is promoted widely.
At present, generally to produce high ferrotianium be to be main raw material with useless titanium to the remelting process of Cai Yonging, and the source of useless titanium is very limited, costs an arm and a leg, and produces one ton high ferrotianium need power consumption 1000KWh, the cost height.
Summary of the invention
The purpose of this invention is to provide the preparation method of a kind of smelting of steel with high ferrotitanium alloy, in smelting furnace, use the oxide compound in aluminium and magnesium reduction rutile (or titanium slag) and the iron scale, rely on the chemical reaction heat of material and the sensible heat of material to smelt, carry out smoothly in order to make smelting, material unit's heat effect is the 3000-3500KJ/Kg material in the smelting furnace, adopts the operation of upper point pyrogenic process.The desired raw material aboundresources, low price, not electricity consumption during smelting, stable and reliable product quality, cost is low, and is good in economic efficiency.
To achieve these goals, the present invention is the rutile that will be baked to 400-500 ℃, iron scale, after lime is weighed and is mixed again and aluminum magnesium alloy, Potcrate mixes, or will be baked to 400-500 ℃ titanium slag, iron scale, after lime is weighed and is mixed, again and aluminum magnesium alloy, Potcrate mixes, when the temperature of mixture is 160-200 ℃, mixture is joined special being baked in 145-210 ℃ the smelting furnace body of heater, priming mixture is put on top at mixture, light priming mixture, rely on the chemical reaction heat of mixture in the smelting furnace and the sensible heat of mixture to smelt, carry out deslagging again, hang stove, play iron, the sandblast slagging-off, broken, chemical examination, packing.
The smelting of the steel of the present invention preparation method of high ferrotitanium alloy, its main raw material rutile aboundresources, low price reduces oxide compound in rutile (or titanium slag) and the iron scale with aluminium and magnesium in smelting furnace, sensible heat by mixture chemical reaction heat and mixture is smelted, adopt the upper point pyrogenic process, not electricity consumption during smelting can be saved a large amount of electric energy and expense, foreign matter content is low in the product, steady quality is reliable, and cost is low, has good social benefit and economic benefit.
Description of drawings
Fig. 1: the used furnace construction synoptic diagram of the present invention
Among the figure: 1, furnace shell; 2, air retaining wall; 3, mud hole; 4, magnesia substrate; 5, accommodate the scarce sphere-like groove of chiltern of product; 6, outside sand charges.
Embodiment
Raw material used in the present invention is rutile, iron scale, aluminum magnesium alloy, Potcrate, lime, or titanium slag, iron scale, aluminum magnesium alloy, Potcrate, lime.Wherein rutile or titanium slag provide the raw material of titanium elements, and iron scale provides the raw material of ferro element and heat-generating agent as a supplement, and aluminum magnesium alloy is a reductive agent, and Potcrate is heat-generating agent (KClO
3+ 2Al=KCl+Al
2O
3The unit heat effect is the 9769.99KJ/Kg material), lime is flux, material unit's heat effect is under the condition of 3000-3500KJ/Kg material in smelting furnace, the oxide compound in aluminium and magnesium reduction rutile (or titanium slag) and the iron scale, and its principal reaction and material heat effect are as follows:
Reduce TiO with Al
2, Fc
2O
3, FeO, SiO
2Reaction and unit heat effect thereof:
3TiO
2+ 4Al=3Ti+2Al
2O
31720.77KJ/Kg material
3TiO
2+ 2Al=3TiO+Al
2O
32105.96KJ/Kg material
Fe
2O
3+ 2Al=2Fe+Al
2O
3The 4015KJ/Kg material
3FeO+2Al=3Fe+Al
2O
33207.9KJ/Kg material
3SiO
2+ 4Al=3Si+2Al
2O
3The 2545KJ/Kg material
Reduce TiO with Mg
2, Fe
2O
3, FeO, SiO
2Reaction and unit heat effect thereof:
TiO
2+ 2Mg=Ti+2MgO 2005KJ/Kg material
TiO
2+ Mg=TiO+MgO 2150KJ/Kg material
Fe
2O
3+ 3Mg=2Fe+3MgO 4206KJ/Kg material
SiO
2+ 2Mg=Si+2MgO 2645KJ/Kg material
Raw material used in the present invention and weight % proportioning thereof are:
Rutile (TiO
2The 50-58% of 87-97% granularity≤0.25mm)
Iron scale (the 3-8% of ∑ Fe 〉=66% granularity≤1.5mm)
Aluminum magnesium alloy (the 22-32% of Al81.5-96.5%Mg3-18% granularity≤1.5mm)
Potcrate (KClO
3The 4-10% of 〉=99% granularity≤1.5mm)
Lime (the 6-11% of CaO85-96% granularity≤1.5mm)
Its reparation technology process is, earlier as shown in Figure 1 the smelting furnace body of heater that constitutes by furnace shell 1 and block has on the furnace shell inwall magnesia brick air retaining wall 2, hang on magnesia substrate 4 with crane, the magnesia substrate at bottom of furnace body place is made the chiltern of accommodating product lack sphere-like groove 5, and be baked to 145-210 ℃.Adopt the operation of upper point pyrogenic process, in the rotary kiln respectively baking be heated to 400-500 ℃ rutile, iron scale, lime weigh in the proportioning ratio mix after, mix again and in aluminum magnesium alloy, Potcrate that the proportioning ratio is weighed, when the temperature of mixture is 160-200 ℃, mixture is joined in the smelting furnace, for smelting is carried out smoothly, material unit's heat effect is the 3000-3500KJ/Kg material in the smelting furnace; Priming mixture is put on top at mixture, light priming mixture, rely on the chemical reaction heat of mixture in the smelting furnace and the sensible heat of material to smelt, be 1-3 minute tap to tap time, after smelting finished 20-35 minute, the mud hole 3 of opening smelting furnace carries out slagging, slagging after finishing 14 hours hung out the smelting furnace body of heater, hung out body of heater and played iron after 3 hours, ingot iron is hung carry out water cooling in the cooling trough, again ingot iron is carried out sandblast slagging-off, broken, sample examination analysis, packing.
The smelting high ferrotitanium alloy of the steel of producing, the weight % of its composition is: Ti65-75%, Al≤5.0%, Si≤3.5%, C≤0.15%, Cu≤0.4%, Mn≤1.0%, P≤0.05%, S≤0.05%, all the other are Fe.
Raw material used in the present invention and weight % proportioning thereof can also for:
Titanium slag (TiO
2The 50-58% of 87-97% granularity≤0.25mm)
Iron scale (the 3-8% of ∑ Fe 〉=66% granularity≤1.5mm)
Aluminum magnesium alloy (the 22-32% of Al81.5-96.5%Mg3-18% granularity≤1.5mm)
Potcrate (KClO
3The 4-10% of 〉=99% granularity≤1.5mm)
Lime (the 6-11% of CaO 85-96% granularity≤1.5mm)
Its reparation technology process is, earlier as shown in Figure 1 the smelting furnace body of heater that constitutes by furnace shell 1 and block has on the furnace shell inwall magnesia brick air retaining wall 2, hang on magnesia substrate 4 with crane, the magnesia substrate at bottom of furnace body place is made the chiltern of accommodating product lack sphere-like groove 5, and be baked to 145-210 ℃.Adopt the operation of upper point pyrogenic process, the titanium slag that in rotary kiln, is baked to 400-500 ℃ respectively, iron scale, lime is weighed in the proportioning ratio after the mixing, again and the aluminum magnesium alloy of weighing in the proportioning ratio, Potcrate mixes, when the temperature of mixture is 160-200 ℃, mixture is joined in the smelting furnace, carry out smoothly in order to make smelting, material unit's heat effect is the 3000-3500KJ/Kg material in the smelting furnace, priming mixture is put on top at mixture, light priming mixture, rely on the chemical reaction heat of mixture in the smelting furnace and the sensible heat of material to smelt, be 1-3 minute tap to tap time, after smelting finished 20-35 minute, the mud hole 3 of opening the smelting furnace body of heater carried out slagging, and slagging after finishing 14 hours hung out the smelting furnace body of heater, wait to hang out body of heater and play iron after 3 hours, ingot iron hung carry out water cooling in the cooling trough, again ingot iron is carried out the sandblast slagging-off, broken, sample examination is analyzed, packing.
The smelting high ferrotitanium alloy of the steel of producing, the weight % of its composition is: Ti65-75%, Al≤5.0%, Si≤3.5%, C≤0.15%, Cu≤0.4%, Mn≤1.0%, P≤0.05%, S≤0.05%, all the other are Fe.
The smelting of the steel of the present invention preparation method of high ferrotitanium alloy, use the production of aluminium magnesiothermy, adopt the part magnesium substitution of Al to make reductive agent, not only can improve the rate of recovery of titanium, and can reduce the content of impurity aluminum in the high ferrotitanium alloy, further improved the quality of alloy.
Embodiment 1
The weight % of employed raw material is:
Rutile 54.18%
Iron scale 4.23%
Aluminum magnesium alloy 26.95%
Potcrate 6.78%
Lime 7.86%
When producing, earlier by as shown in Figure 1 build the smelting furnace body of heater that the magnesia brick air retaining wall 2 that has constitutes by furnace shell 1 and furnace shell inwall, hang on smooth magnesia substrate 4 with crane, and the magnesia substrate at bottom of furnace body place made the scarce sphere-like groove 5 that can accommodate product, and in body of heater, be baked to 180 ℃ with incendiary timber.Adopt the operation of upper point pyrogenic process, the rutile that in rotary kiln, is baked to 450 ℃ respectively, iron scale, after lime is weighed and is mixed, again with the aluminum magnesium alloy of weighing, Repone K mixes, when the temperature of mixture is 200 ℃, mixture is joined in the smelting furnace, carry out smoothly for making smelting, mixture unit's heat effect is the 3191KJ/Kg material, put on the top of mixture then by magnesium chips and Potcrate and mix the priming mixture that the back is formed, priming mixture is lighted, rely on the chemical reaction heat of mixture in the smelting furnace and the sensible heat of material to smelt with burning red iron staff, be 1.5 minutes tap to tap time, after smelting finished 30 minutes, the mud hole 3 of opening the smelting furnace body carried out slagging, after slagging finished 14 hours, the smelting furnace body of heater is hung out with crane, wait to hang out body of heater and play iron after 3 hours, ingot iron is hung carry out water cooling in the cooling trough, again ingot iron is carried out the sandblast slagging-off, obtain high ferrotianium ingot, fragmentation, the sample examination analysis is packed.
The high ferrotitanium alloy of producing, the weight % of its composition are Ti71.26%, Al2.89%, Si2.35%, C0.1%, Cu0.09%, Mn0.58%, P0.018%, S0.033%, and all the other are Fe.
Embodiment 2
Employed raw material and weight % proportioning thereof are:
Titanium slag 54.25%
Iron scale 4.23%
Aluminum magnesium alloy 27.02%
Potcrate 6.78%
Lime 7.72%
Mixture unit's heat effect is the 3196KJ/Kg material, by embodiment 1 identical produce step, the high ferrotitanium alloy of producing, the weight % of its composition is Ti 71.28%, Al 2.91%, Si 2.33%, C0.09%, Cu0.1%, Mn0.61%, P0.020%, S0.035%, and all the other are Fe.
Claims (4)
1. the smelting of a steel is characterized in that employed raw material and weight % proportioning thereof are with the preparation method of high ferrotitanium alloy:
Rutile TiO
287-97% granularity≤0.25mm 50-58%
Iron scale ∑ Fe 〉=66% granularity≤1.5mm 3-8%
Aluminum magnesium alloy Al81.596.5 Mg3-18% granularity≤1.5mm 22-32%
Potcrate KClO
3〉=99% granularity≤1.5mm 4-10%
Lime CaO85-96% granularity≤1.5mm 6-11%
Its reparation technology process is, earlier the smelting furnace body of heater of building magnesia brick air retaining wall (2) formation that has by furnace shell (1) with on furnace shell (1) inwall, hang on magnesia substrate (4) with crane, and the magnesia substrate at bottom of furnace body place is made the chiltern of accommodating product lack sphere-like groove (5), and be baked to 145-210 ℃, adopt the operation of upper point pyrogenic process, the rutile that in rotary kiln, is baked to 400-500 ℃ respectively, iron scale, lime is weighed in the proportioning ratio after the mixing, again and the aluminum magnesium alloy of weighing in the proportioning ratio, Potcrate mixes, when the temperature of mixture is 160-200 ℃, mixture is joined in the smelting furnace, carry out smoothly in order to make smelting, material unit's heat effect is the 3000-3500KJ/Kg material in the smelting furnace, priming mixture is put on top at mixture, light priming mixture, rely on the chemical reaction heat of mixture in the smelting furnace and the sensible heat of material to smelt, be 1-3 minute tap to tap time, after smelting finished 20-35 minute, the mud hole (3) of opening smelting furnace carries out slagging, slagging after finishing 14 o'clock hung out the smelting furnace body of heater, hang out body of heater and play iron after 3 hours, ingot iron hung carry out water cooling in the cooling trough, again ingot iron is carried out the sandblast slagging-off, broken, sample examination is analyzed, packing.
2. the smelting of a kind of steel according to claim 1 is with the preparation method of high ferrotitanium alloy, it is characterized in that, the weight % of its composition of high ferrotitanium alloy of producing is: Ti65-75%, Al≤5.0%, Si≤3.5%, C≤0.15%, Cu≤0.4%, Mn≤1.0%, P≤0.05%, S≤0.05%, all the other are Fe.
3. the smelting of a steel is characterized in that employed raw material and weight % proportioning thereof are with the preparation method of high ferrotitanium alloy:
Titanium slag TiO
287-97% granularity≤0.25mm 50-58%
Iron scale ∑ Fe 〉=66% granularity≤1.5mm 3-8%
Aluminum magnesium alloy Al81.5-96.5%Mg3-18% granularity≤1.5mm 22-32%
Potcrate KClO
3〉=99% granularity≤1.5mm 4-10%
Lime CaO 85-96% granularity≤1.5mm 6-11%
Its reparation technology process is, earlier the smelting furnace body of heater of building magnesia brick air retaining wall (2) formation that has by furnace shell (1) with on furnace shell (1) inwall is hung with crane on magnesia substrate (4), and the magnesia substrate at bottom of furnace body place is made the chiltern of accommodating product lack sphere-like groove (5), and be baked to 145-210 ℃, adopt the operation of upper point pyrogenic process, the titanium slag that in rotary kiln, is baked to 400-500 ℃ respectively, iron scale, lime is weighed in the proportioning ratio after the mixing, again and the aluminum magnesium alloy of weighing in the proportioning ratio, Potcrate mixes, when the mixture temperature is 160-200 ℃, mixture is joined in the smelting furnace, carry out smoothly in order to make smelting, material unit's heat effect is the 3000-3500KJ/Kg material in the smelting furnace, priming mixture is put on top at mixture, light priming mixture, rely on the chemical reaction heat of mixture in the smelting furnace and the sensible heat of material to smelt, be 1-3 minute tap to tap time, after smelting finished 20-35 minute, the mud hole (3) of opening smelting furnace carries out slagging, slagging after finishing 14 hours hung out the smelting furnace body of heater, hang out body of heater and play iron after 3 hours, ingot iron hung carry out water cooling in the cooling trough, again ingot iron is carried out the sandblast slagging-off, broken, sample examination is analyzed, packing.
4. the smelting of a kind of steel according to claim 3 is with the preparation method of high ferrotitanium alloy, it is characterized in that, the weight % of its composition of high ferrotitanium alloy of producing is: Ti65-75%, Al≤5.0%, Si≤3.5%, C≤0.15%, Cu≤0.4%, Mn≤1.0%, P≤0.05%, S≤0.05%, all the other are Fe.
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|---|---|---|---|
| CNB2005100462694A CN1323183C (en) | 2005-04-15 | 2005-04-15 | Method for jpreparing high ferrotitanium in use for smelting steel |
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| CN1323183C true CN1323183C (en) | 2007-06-27 |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN101008053B (en) * | 2007-01-23 | 2010-04-07 | 梅卫东 | Method for preparing ferrotitanium and silicon ferrotitanium using high magnesium and low titanium concentrate |
| 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 |
| CN103509957B (en) * | 2013-10-24 | 2016-02-10 | 攀枝花学院 | With titanium slag and ilmenite concentrate be titanium, iron material produces the method for high ferrotitanium alloy |
| CN103614564B (en) * | 2013-11-01 | 2015-07-15 | 西安建筑科技大学 | Method for continuously smelting vanadium-containing ferrophosphorous |
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