CN101067183A - Method for producing rare earth-containing niobium alloy with blast furnace waste slag after smelting from Baiyunebo mine - Google Patents
Method for producing rare earth-containing niobium alloy with blast furnace waste slag after smelting from Baiyunebo mine Download PDFInfo
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Abstract
The present invention relates to metallurgical technology, and is especially process of producing alloy containing RE and Nb with blast furnace slag from smelted baiyuneboite. The present invention produces alloy containing RE and Nb with the materials including the blast furnace slag from smelted baiyuneboite, barite, celestite, dolomite, limestone, steel scrap, quartz stone, etc and through smelting in furnace. The present invention provides technological process of utilizing the RE and Nb resource in the blast furnace slag to produce valuable alloy.
Description
(1) technical field
The present invention relates to the method that a kind of blast furnace waste residue manufacturing after smelting with baiyuneboite contains rare earth, niobium alloy, belong to field of metallurgy.
(2) background technology
The mineral tissue of blast furnace waste residue has gehlenite, calcio-akermanite, pyrochlore, fluorite and vitreum etc.And baiyuneboite is a kind of complex ore based on ferro element, because its composition uniqueness, and the uniqueness of the composition of the blast furnace waste residue after having determined it to smelt.At present, baiyuneboite is specialized in Baogang's ironmaking and is used, so also can be called Baogang's blast furnace slag with the blast furnace waste residue after the baiyuneboite smelting.
The main chemical compositions of Baogang's blast furnace slag and content weight percent are:
| Oxide compound | CaO | SiO 2 | Al 2O 3 | MgO | RexOy | Nb 2O 5 | F | ThO 2 | TFe |
| Content | 38.2 | 32.04 | 7.96 | 7.62 | 3.86 | 0.085 | 1.57 | 0.0017 | 1.57 |
RexOy:Re represents mixed rare-earth elements, because the valency difference, so this formula is represented mixed rare-earth oxide.
Rare earth and niobium are rare elements, add trace in steel, iron, just play deoxidation, desulfurization, change inclusion morphology, crystal grain thinning, the effect that has purification and go bad.The effect of microalloying can also be arranged in some steel, and rare earth and niobium can improve resistance of oxidation, hot strength and plasticity, fatigue lifetime, erosion resistance and the splitting resistance of steel.Baogang's blast furnace slag has the monopolizing characteristic that is different from other slags, not only contain rare earth, niobium, also active thorium, these constituent contents are less, it is impossible extracting separately, thorium especially, and content is 0.002% in the slag, the emerging academician of Li Guan just once said " the thorium content in Baogang's blast furnace slag is too low, is difficult to recycle " in 2006.So the project of Baogang's blast furnace slag resource utilization is less.The source company of Baogang's perseverance in 2006 is tested and appraised, and to make serial wall floor tile with Baogang's blast furnace slag 1/3+ flyash+slag be successful, but, rare earth in Baogang's blast furnace slag and niobium resource are used in the brick inoperative, also unreasonable, again owing to contain thorium in Baogang's blast furnace slag, and this element has radiation, so limited with the quantity of slag.It is investigated and read that the sixties in 20th century are that reductive agent is made 1# alloy FeSiRe with Zou Yuanxi exploitation Baogang blast furnace slag with ferrosilicon, obtain the invention second prize.
(3) summary of the invention
Purpose of the present invention turns waste into wealth exactly, blast furnace waste residue after a kind of baiyuneboite can the smelting is provided, be that important element Re, Nb in Baogang's blast furnace slag passes through resource technology, they are comprehensively extracted the method that the blast furnace waste residue manufacturing with after the baiyuneboite smelting of making alloy contains rare earth, niobium alloy, the alloy that makes with method of the present invention is applied to the smelting iron and steel industry, existing deoxidation, sulphur falls, effect rotten, microalloying is arranged again, for the kind that increases steel, iron, strengthen the performance of steel, iron, meaning is bigger.
Realize that method of the present invention comprises following three kinds:
A, blast furnace waste residue, barite, lazurite, steel cuttings, quartzite, fluorite after smelting with baiyuneboite are raw material, with blue carbon is reductive agent, and each raw materials in part by weight proportioning is: blast furnace waste residue 50-70 part, the BaO content after baiyuneboite is smelted is not less than 85% barite 2-30 part, SrO content and is not less than 60% lazurite 2-30 part, Fe content and is not less than 95% steel cuttings 5-20 part, C content and is not less than 80% blue carbon 10-30 part, SiO
2Content is not less than 98% quartzite 5-50 part, CaF
2Content is not less than fluorite 10-25 part of 80%, with described raw material pulverizing, according to proportioning system ball, after the drying, mix with steel cuttings, fluorite, drop in the hot stove in ore deposit and smelt, smelting temperature is 1800 ℃～1900 ℃, and be 1-5 hour tap to tap time, goes out molten iron, skim, cast is finished product, and the main chemical compositions that makes alloy forms by weight percentage that wt% is: Si40～55%, Ba2～10%, Sr1～8%, Re0.5～10%, Nb0.009～0.15%, the total amount of C, S, P＜0.8%, surplus are Fe;
B, blast furnace waste residue, barite, lazurite, rhombspar, steel cuttings, quartzite, fluorite after smelting with baiyuneboite are raw material, with blue carbon is reductive agent, and each raw materials in part by weight proportioning is: blast furnace waste residue 50-70 part, the BaO content after baiyuneboite is smelted is not less than 85% barite 2-30 part, SrO content and is not less than 60% lazurite 2-30 part, MgO content and is not less than 15% rhombspar 5-30 part, Fe content and is not less than 95% steel cuttings 5-20 part, C content and is not less than 80% blue carbon 10-30 part, SiO
2Content is not less than 98% quartzite 5-50 part, CaF
2Content is not less than fluorite 10-25 part of 80%, with described raw material pulverizing, according to proportioning system ball, after the drying, mix with steel cuttings, fluorite, drop in the hot stove in ore deposit and smelt, smelting temperature is 1900 ℃～2100 ℃, and be 1-5 hour tap to tap time, go out molten iron, skim, cast is finished product, the main chemical compositions that makes alloy is formed by weight percentage, and wt% is: Si30～50%, Mg4～10%, Ba2～10%, Sr1～8%, Re1～10%, Nb0.003～0.15%, the total amount of C, S, P＜0.8%, surplus is Fe;
C, blast furnace waste residue, barite, steel cuttings, quartzite, Wingdale, fluorite after smelting with baiyuneboite are raw material, with blue carbon is reductive agent, and each raw materials in part by weight proportioning is: blast furnace waste residue 50-70 part, the BaO content after baiyuneboite is smelted is not less than 85% barite 2-30 part, CaO and is not less than 60% Wingdale 15-20 part, Fe content and is not less than 95% steel cuttings 5-20 part, C content and is not less than 80% blue carbon 10-30 part, SiO
2Content is not less than 98% quartzite 5-50 part, CaF
2Content is not less than fluorite 10-25 part of 80%, with described raw material pulverizing, according to proportioning system ball, after the drying, mix with steel cuttings, fluorite, drop in the hot stove in ore deposit and smelt, smelting temperature is 2100 ℃～2300 ℃, and be 1-5 hour tap to tap time, go out molten iron, skim, cast is finished product, the main chemical compositions that makes alloy is formed by weight percentage, and wt% is: Si35～55%, Ba10～28%, Ca10～28%, Re0.5～8%, Nb0.009～0.15%, Al＜1.0%, the total amount of C, S, P＜0.8%, surplus is Fe.
Advantage of the present invention is: the blast furnace waste residue after baiyuneboite is smelted, be that important element Re, Nb in Baogang's blast furnace slag is by method of the present invention, they are comprehensively extracted make alloy, turn waste into wealth, the alloy that makes is applied to the smelting iron and steel industry, existing deoxidation, falls sulphur, effect rotten, microalloying is arranged again, for the kind that increases steel, iron, strengthen the performance of steel, iron, meaning is bigger; Owing to barite is arranged in proportioning raw materials, can suppress the radioactivity of thorium in Baogang's blast furnace slag, thus the waste material that makes behind the alloy is utilized again, when making building materials, safer, the environmental protection of material.
(4) embodiment
Embodiment
Embodiment 1:
Get the blast furnace slag 60kg of Baogang, barite 10kg, lazurite 10kg, quartzite 30kg, the ratio batching of blue carbon 22kg is crushed to less than 0.5mm, system ball 25-40cm
3, drying is mixed with steel cuttings 15kg, fluorite 15kg, and be placed in the hot stove in ore deposit, the control furnace temperature was smelted 2-3 hour at 1800 ℃～1900 ℃, went out molten iron, skim, cast, the main chemical compositions of smelting the alloy that wt% by weight percentage is: Si42%, Ba8.8%, Sr6.1%, Re 4.1%, Nb0.05%, Fe37%, C＜0.4%, S＜0.06%, P＜0.05%.
Embodiment 2:
Get the blast furnace slag 50kg of Baogang, barite 2kg, lazurite 2kg, quartzite 30kg, the ratio batching of blue carbon 16kg is crushed to less than 0.5mm, system ball 25-40cm
3, drying is mixed with steel cuttings 10kg, fluorite 10kg, and be placed in the hot stove in ore deposit, the control furnace temperature was smelted 2-3 hour at 1800 ℃～1900 ℃, went out molten iron, skim, cast, the main chemical compositions of smelting the alloy that wt% by weight percentage is: Si49%, Ba 3.8%, and Sr 2.1%, and Re 4.7%, Nb 0.05%, and Fe 38%, C＜0.4%, S＜0.06%, P＜0.05%.
Embodiment 3:
Get the blast furnace slag 70kg of Baogang, barite 15kg, lazurite 20kg, quartzite 50kg, the ratio batching of blue carbon 28kg is crushed to less than 0.5mm, system ball 25-40cm
3, drying is mixed with steel cuttings 15kg, fluorite 25kg, and be placed in the hot stove in ore deposit, the control furnace temperature was smelted 2-3 hour at 1800 ℃～1900 ℃, went out molten iron, skim, cast, the main chemical compositions of smelting the alloy that wt% by weight percentage is: Si51%, Ba 9.5%, and Sr 8.3%, and Re 2.9%, Nb 0.048%, and Fe 27%, C＜0.5%, S＜0.06%, P＜0.005%.
The inoculation that above-mentioned alloy is used to cast, addition are 2-6kg/t iron, can promote greying, reduce chilling tendency, improve graphite form and distribution situation, increase eutectic cell quantity, and the refinement matrix reduces segregation.Because rare earth and niobium are arranged, its anti-ageing ability of moving back is strong, can significantly improve the foundry goods mechanical property.
Embodiment 4:
Get the blast furnace slag 70kg of Baogang, barite 10kg, rhombspar 30kg, lazurite 10kg, quartzite 20kg, the ratio batching of blue carbon 27kg is crushed to less than 0.5mm, system ball 25-40cm
3, after the drying, mix with steel cuttings 10kg, fluorite 25kg, and be placed in the hot stove in ore deposit, the control furnace temperature was smelted 2-3 hour at 1900 ℃～2100 ℃, went out molten iron, skim, cast, the main chemical compositions of smelting alloy wt% by weight percentage is: Si 47.3%, Ba 7.6%, and Sr 6.6%, and Mg 5.4%, Re 4.3%, and Nb 0.08%, and Fe 27.1%, C＜0.5%, S＜0.06%, P＜0.005%.
Embodiment 5:
Get the blast furnace slag 50kg of Baogang, barite 5kg, rhombspar 15kg, lazurite 5kg, quartzite 20kg, the ratio batching of blue carbon 19kg is crushed to less than 0.5mm, system ball 25-40cm
3, after the drying, mix with steel cuttings 10kg, fluorite 15kg, and be placed in the hot stove in ore deposit, the control furnace temperature was smelted 2-3 hour at 1900 ℃～2100 ℃, went out molten iron, skim, cast, the main chemical compositions of smelting alloy wt% by weight percentage is: Si 42.6%, Ba 5.3%, and Sr 5.1%, and Mg 4.5%, Re 4.6%, and Nb 0.08%, and Fe 36%, C＜0.5%, S＜0.06%, P＜0.005%.
Embodiment 6:
Get the blast furnace slag 60kg of Baogang, barite 5kg, rhombspar 30kg, lazurite 10kg, quartzite 10kg, the ratio batching of blue carbon 25kg is crushed to less than 0.5mm, system ball 25-40cm
3, after the drying, mix with steel cuttings 12kg, fluorite 20kg, and be placed in the hot stove in ore deposit, the control furnace temperature was smelted 2-3 hour at 1900 ℃～2100 ℃, went out molten iron, skim, cast, the main chemical compositions of smelting alloy wt% by weight percentage is: Si 41%, Ba 6.1%, and Sr 7.3%, and Mg 7.2%, Re 4.2%, and Nb 0.079%, and Fe 32%, C＜0.5%, S＜0.06%, P＜0.05%.
Above-mentioned alloy can be used for the spheroidizing of cast iron, and addition is a 1.5-5kg/t iron, and the nodularization effect is remarkable, and the anti-ageing ability of moving back is strong.
Embodiment 7:
Get the blast furnace slag 70kg of Baogang, barite 15kg, quartzite 15kg, Wingdale 15kg, the ratio batching of blue carbon 20kg is crushed to less than 0.5mm, system ball 25-40cm
3, after the drying, mix with steel cuttings 5kg, fluorite 5kg, and be placed in the hot stove in ore deposit, the control furnace temperature was smelted 2-3 hour at 2100 ℃～2300 ℃, went out molten iron, skim, cast, the main chemical compositions of smelting the alloy that wt% by weight percentage is: Si45%, Ba 18.2%, and Ca 12.5%, and Re 5.7%, Nb 0.086%, and Fe 17%, Al＜0.9%, C＜0.5%, S＜0.06%, P＜0.05%.
Embodiment 8:
Get the blast furnace slag 50kg of Baogang, barite 15kg, quartzite 15kg, Wingdale 15kg, the ratio batching of blue carbon 16kg is crushed to less than 0.5mm, system ball 25-40cm
3, after the drying, mix with steel cuttings 10kg, fluorite 5kg, and be placed in the hot stove in ore deposit, the control furnace temperature was smelted 2-3 hour at 2100 ℃～2300 ℃, went out molten iron, skim, cast, the main chemical compositions of smelting the alloy that wt% by weight percentage is: Si35%, Ba 16.7%, and Ca 14%, and Re 4.1%, Nb 0.07%, and Fe 28%, Al＜0.8%, C＜0.5%, S＜0.06%, P＜0.05%.
Embodiment 9:
Get the blast furnace slag 60kg of Baogang, barite 30kg, quartzite 50kg, Wingdale 20kg, the ratio batching of blue carbon 26kg is crushed to less than 0.5mm, system ball 25-40cm
3, after the drying, mix with steel cuttings 10kg, fluorite 10kg, and be placed in the hot stove in ore deposit, the control furnace temperature was smelted 2-3 hour at 2100 ℃～2300 ℃, went out molten iron, skim, cast, the main chemical compositions of smelting the alloy that wt% by weight percentage is: Si42%, Ba 21.2%, and Ca 16%, and Re 2.8%, Nb 0.047%, and Fe 16%, Al＜0.8%, C＜0.5%, S＜0.06%, P＜0.05%.
The composite deoxidant that above-mentioned alloy can be used for making steel, addition 1-3kg/t steel has deoxidation and falls sulphur, and the function of microalloying can improve the weathering resistance and the over-all properties of steel.
Claims (1)
1. the blast furnace waste residue manufacturing after smelting with baiyuneboite contains the method for rare earth, niobium alloy, it is characterized in that taking one of following three kinds of methods:
A, blast furnace waste residue, barite, lazurite, steel cuttings, quartzite, fluorite after smelting with baiyuneboite are raw material, with blue carbon is reductive agent, and each raw materials in part by weight proportioning is: blast furnace waste residue 50-70 part, the BaO content after baiyuneboite is smelted is not less than 85% barite 2-30 part, SrO content and is not less than 60% lazurite 2-30 part, Fe content and is not less than 95% steel cuttings 5-20 part, C content and is not less than 80% blue carbon 10-30 part, SiO
2Content is not less than 98% quartzite 5-50 part, CaF
2Content is not less than fluorite 10-25 part of 80%, with described raw material pulverizing, according to proportioning system ball, after the drying, mix with steel cuttings, fluorite, drop in the hot stove in ore deposit and smelt, smelting temperature is 1800 ℃～1900 ℃, and be 1-5 hour tap to tap time, goes out molten iron, skim, cast is finished product, and the main chemical compositions that makes alloy forms by weight percentage that wt% is: Si40～55%, Ba2～10%, Sr1～8%, Re0.5～10%, Nb0.009～0.15%, the total amount of C, S, P＜0.8%, surplus are Fe;
B, blast furnace waste residue, barite, lazurite, rhombspar, steel cuttings, quartzite, fluorite after smelting with baiyuneboite are raw material, with blue carbon is reductive agent, and each raw materials in part by weight proportioning is: blast furnace waste residue 50-70 part, the BaO content after baiyuneboite is smelted is not less than 85% barite 2-30 part, SrO content and is not less than 60% lazurite 2-30 part, MgO content and is not less than 15% rhombspar 5-30 part, Fe content and is not less than 95% steel cuttings 5-20 part, C content and is not less than 80% blue carbon 10-30 part, SiO
2Content is not less than 98% quartzite 5-50 part, CaF
2Content is not less than fluorite 10-25 part of 80%, with described raw material pulverizing, according to proportioning system ball, after the drying, mix with steel cuttings, fluorite, drop in the hot stove in ore deposit and smelt, smelting temperature is 1900 ℃～2100 ℃, and be 1-5 hour tap to tap time, go out molten iron, skim, cast is finished product, the main chemical compositions that makes alloy is formed by weight percentage, and wt% is: Si30～50%, Mg4～10%, Ba2～10%, Sr1～8%, Re1～10%, Nb0.003～0.15%, the total amount of C, S, P＜0.8%, surplus is Fe;
C, blast furnace waste residue, barite, steel cuttings, quartzite, Wingdale, fluorite after smelting with baiyuneboite are raw material, with blue carbon is reductive agent, and each raw materials in part by weight proportioning is: blast furnace waste residue 50-70 part, the BaO content after baiyuneboite is smelted is not less than 85% barite 2-30 part, CaO and is not less than 60% Wingdale 15-20 part, Fe content and is not less than 95% steel cuttings 5-20 part, C content and is not less than 80% blue carbon 10-30 part, SiO
2Content is not less than 98% quartzite 5-50 part, CaF
2Content is not less than fluorite 10-25 part of 80%, with described raw material pulverizing, according to proportioning system ball, after the drying, mix with steel cuttings, fluorite, drop in the hot stove in ore deposit and smelt, smelting temperature is 2100 ℃～2300 ℃, and be 1-5 hour tap to tap time, go out molten iron, skim, cast is finished product, the main chemical compositions that makes alloy is formed by weight percentage, and wt% is: Si35～55%, Ba10～28%, Ca10～28%, Re0.5～8%, Nb0.009～0.15%, Al＜1.0%, the total amount of C, S, P＜0.8%, surplus is Fe.
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| CNA200710123073XA CN101067183A (en) | 2007-06-28 | 2007-06-28 | Method for producing rare earth-containing niobium alloy with blast furnace waste slag after smelting from Baiyunebo mine |
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| Application Number | Priority Date | Filing Date | Title |
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| CNA200710123073XA CN101067183A (en) | 2007-06-28 | 2007-06-28 | Method for producing rare earth-containing niobium alloy with blast furnace waste slag after smelting from Baiyunebo mine |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106119447A (en) * | 2016-07-18 | 2016-11-16 | 东北大学 | A kind of produce and the method for modifier treatment containing rare earth and niobium mixing slag melting and reducing |
| CN106636614A (en) * | 2017-01-17 | 2017-05-10 | 东北大学 | Method for leaching niobium, scandium and rare earth elements from tailings |
| CN113817918A (en) * | 2021-08-05 | 2021-12-21 | 包头钢铁（集团）有限责任公司 | Method for improving reduction expansion of high-alkali metal and high-F content pellet ore |
| JP7568925B2 (en) | 2021-01-19 | 2024-10-17 | 日本製鉄株式会社 | Method for recovering rare earth elements |
-
2007
- 2007-06-28 CN CNA200710123073XA patent/CN101067183A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106119447A (en) * | 2016-07-18 | 2016-11-16 | 东北大学 | A kind of produce and the method for modifier treatment containing rare earth and niobium mixing slag melting and reducing |
| CN106119447B (en) * | 2016-07-18 | 2018-05-04 | 东北大学 | A kind of method containing rare earth with the production of niobium mixing slag melting and reducing and modifier treatment |
| CN106636614A (en) * | 2017-01-17 | 2017-05-10 | 东北大学 | Method for leaching niobium, scandium and rare earth elements from tailings |
| CN106636614B (en) * | 2017-01-17 | 2019-06-04 | 东北大学 | A method of leaching niobium, scandium and rare earth element from tailing |
| JP7568925B2 (en) | 2021-01-19 | 2024-10-17 | 日本製鉄株式会社 | Method for recovering rare earth elements |
| CN113817918A (en) * | 2021-08-05 | 2021-12-21 | 包头钢铁（集团）有限责任公司 | Method for improving reduction expansion of high-alkali metal and high-F content pellet ore |
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