CN109468425A - A kind of antivacuum lower production amorphous material new process - Google Patents

A kind of antivacuum lower production amorphous material new process Download PDF

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Publication number
CN109468425A
CN109468425A CN201811512975.7A CN201811512975A CN109468425A CN 109468425 A CN109468425 A CN 109468425A CN 201811512975 A CN201811512975 A CN 201811512975A CN 109468425 A CN109468425 A CN 109468425A
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China
Prior art keywords
molten steel
pure iron
purity pure
amorphous
amorphous material
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CN201811512975.7A
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Chinese (zh)
Inventor
李森蓉
熊忠林
李雄
汪汝武
熊钢
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GUIKUN SCIENCE AND TECHNOLOGY Co Ltd WUHAN
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GUIKUN SCIENCE AND TECHNOLOGY Co Ltd WUHAN
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Priority to CN201811512975.7A priority Critical patent/CN109468425A/en
Publication of CN109468425A publication Critical patent/CN109468425A/en
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    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/14—Multi-stage processes processes carried out in different vessels or furnaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
    • B22D11/06—Continuous casting of metals, i.e. casting in indefinite lengths into moulds with travelling walls, e.g. with rolls, plates, belts, caterpillars
    • B22D11/0637—Accessories therefor
    • B22D11/064—Accessories therefor for supplying molten metal
    • B22D11/0642—Nozzles
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21B—MANUFACTURE OF IRON OR STEEL
    • C21B13/00—Making spongy iron or liquid steel, by direct processes
    • C21B13/0006—Making spongy iron or liquid steel, by direct processes obtaining iron or steel in a molten state

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Continuous Casting (AREA)
  • Soft Magnetic Materials (AREA)

Abstract

The present invention relates to a kind of antivacuum lower production amorphous material new processes, it is characterized in that sequentially including the following steps: step 1, produce high-purity pure iron molten steel, the preparation of high-purity pure iron molten steel uses ZL201410341008.4, title are as follows: a kind of high-purity pure iron molten steel for the method production for producing high-purity pure iron；Step 2 is incorporated Si, B and P alloy into amorphous magnetic material molten steel in high-purity pure iron molten steel, is flowed on high-speed rotating cooling copper roller through crucible nozzle packet mouth seam, molten steel is by super hurried cold at strip.The present invention is able to produce tapping greater than 99.9% low impurity pure iron as the high-quality base-material of amorphous nanocrystalline soft magnetic material using the ultrashort flow system that coal base shaft furnace and intermediate frequency (IF) smelting system form, can effectively automatic control and raising product quality.The present invention is shorter than traditional amorphous material process flow, and tooling device is few, and with low investment, low energy consumption, at low cost, self controllable product quality.

Description

A kind of antivacuum lower production amorphous material new process
Technical field
The present invention relates to a kind of antivacuum lower production amorphous material new processes.
Background technique
In recent years, with the development need of China's industry 2025, the continuously improving and communicate of each industry production equipment, sound The development of the fields such as picture, electrical engineering, automation equipment, automobile, Magneto separate and bioengineering new high-tech industry, magnetic material The fast development of material, amorphous alloy etc. brings wide market to pure iron industry
The domestic and international positive ultrapureization development of pure iron as raw material, promotes hard magnetic material (such as NdFeB) and soft magnetic amorphous state (such as SiFeB development).
Amorphous alloy is also known as glassy metal, is a kind of metal solid of longrange disorder, typically refers to iron, nickel, cobalt etc. The nonmetalloids consolute such as metallic element and silicon, boron forms alloy, then uses super rapid cooling technology, so that interior atoms come It is just solidified not as good as rearranging as ordered crystal structure, so that the amorphous soft magnetic alloy generated, currently makes on a large scale Amorphous alloy is based on Fe-based amorphous alloy.With excellent corrosion resistance, high intensity, high rigidity, high-wearing feature, and Excellent soft magnet performance and superconducting characteristic etc. are also shown, there is potential application space in many fields.
One of amorphous alloy has promising application field very much --- amorphous transformer.Transformer with amorphous alloy made iron core It is with new magnetic material --- amorphous alloy makes transformer made of iron core, it makees the zero load of appendiron core transformer than silicon steel sheet Loss decline 75% or so, no-load current decline about 80%, is the comparatively ideal distribution transformer of current energy-saving effect, particularly suitable In the lower place of the load factors such as rural power grids and developing region.
Traditional amorphous material technique:
Buy the alloys → amorphous state molten steel such as fusing → supplying Si, B, P in steel mill's finished industrial pure iron → vaccum sensitive stove Ingot casting (master alloy ingot) → intermediate frequency furnace fusing constant temperature → tundish → nozzle packet mouth seam flows on high-speed rotating cooling copper roller → Coil into amorphous material → heat treatment → amorphous nanocrystalline soft magnetic material
And steel mill's finished industrial pure iron mainly uses:
1. electrolysis method: traditional chemical industry method of purification, general technique be exactly in the salting liquid of metal be inserted into one to The crude metal of purification is electrolysed as cathode, is electrolysed available on cathode as anode, a pure metal Quite pure metal, but electrolytic iron is at high cost, expensive, limits its application.
2. metallurgy method:
Commonly use vacuum metallurgy method in 2.1 parts:
2.1.1 blast-melted method: " external refining → LF furnace → vacuum in concentrate powder → sintering → blast furnace ironmaking → ladle Refining → arc continuous casting → cutting → rolling → pure iron product ".
2.1.2 using mild steel as raw material, with " electric arc furnaces+AOD furnace (argon oxygen decarburizing furnace) or electric arc furnaces+RH furnace (circulation Formula vacuum drying oven) ".
2.1.3 three techniques of " electric arc furnaces+vaccum sensitive stove+VOD vacuum refining " are used.
2.1.4 " vacuum induction melting+vacuum double refining " is used.
It is well known that need to have sintering, coking, blast furnace ironmaking, blowing steel-making from Iron Ore Powder to steel-making in traditional Ferrous Metallurgy Etc. processes, and this several procedure be in Ferrous Metallurgy serious dirty seven source dusty according to statistics: only with China produce per year 800,000,000 Ton steel calculates, it is annual generate about 96,000,000 tons of of iron dust containing at present each iron and steel enterprise all try every possible means put into huge fund carry out it is comprehensive It closes and administers, this improvement is also only to treat the symptoms not effect a permanent cure.
In conventional metallurgical technique raw material derive from blast-melted or steel scrap, in blast furnace ironmaking Fe and it is other can be by solid C The element of reduction such as Si, Mn, P, Ni, Cr oxide is all entered in molten iron by C reduction at a high temperature of 1500 DEG C, in order to remove Iron impurities in water, purifying molten iron, the heavy length of process, the country that need to can be only achieved pure iron through multiple tracks metallurgical process and vacuum processing marks Quasi-
The investment of molten steel vacuum treatment device is higher by several times of antivacuum smelting equipment, invests high
China's pure iron concerned countries standard such as table one:
One pure iron as raw material GB/T 9971-2004 of table
Summary of the invention
The object of the invention provides a kind of antivacuum lower production amorphous material new process, utilizes coal based shaft kiln directly reduced iron Technology and the ultrashort process of intermediate frequency (IF) smelting system composition generate line, and production iron is greater than 99.9% low impurity pure iron as amorphous nano The brilliant high-quality base-material of soft magnetic materials (C, Si in low impurity pure iron, Mn, P, S, Cr, Ni, Mo, Al, Cu, Co, Ti, Nb, V, W, Pb, B, More than 20 constituent content such as As, Ce, La is all respectively less than 0.008%, (find out from table one, it is self-produced pure under the present invention is antivacuum Impurity is low in iron).The alloys such as supplying Si, B, P are melted at amorphous nanocrystalline soft magnetic material molten steel, through nozzle packet mouth by crucible again Seam flows on high-speed rotating cooling copper roller, and molten steel is got rid of the band super chilling of machine into strip, for producing high-performance inductance core, inverse The amorphous band that variable power source magnetic core of transformer needs.
The technical solution of the present invention is as follows:
A kind of antivacuum lower production amorphous material new process, it is characterised in that sequentially include the following steps:
Step 1 produces high-purity pure iron molten steel, and the preparation of high-purity pure iron molten steel uses ZL201410341008.4, A kind of title are as follows: high-purity pure iron molten steel for the method production for producing high-purity pure iron；
Step 2 is incorporated Si, B and P alloy at amorphous magnetic material molten steel, through crucible nozzle packet in high-purity pure iron molten steel Mouth seam flows on high-speed rotating cooling copper roller, and molten steel is by super hurried cold at strip.
950-1200 DEG C of technological temperature is reduced directly in the step 1 production high-purity pure iron molten steel
1620-1680 DEG C of intermediate frequency furnace fusion temperature/bottom blowing Ar in the step 1 production high-purity pure iron molten steel, pressure are 0.8-1.2kg/cm2。
In the step 2, temperature is 1400-1450 DEG C in intermediate constant temperature packet crucible.
In the step 2, nozzle slit width is 0.4mm-0.8mm.
Obvious: the present invention is melted using the antivacuum medium-frequency induction furnace collection of remodeling divides → refining → alloying → constant temperature four Integration in conjunction with amorphous material technological equipment, and does not need vacuum melting and casting unit, both simplifies technical process, Shorter than traditional amorphous material process flow, tooling device is few, and with low investment, low energy consumption, at low cost, self controllable product quality.
And the useless pollution antivacuum new process of of solid gas and tradition of the too many levels in the traditional iron-making and steel-making of cancellation are blast-melted Production pure iron technique is compared: one ton of 3N pure iron (C element content is based on 0.005%) of every production can reduce discharge CO2About 135.7kg is a kind of environmentally protective pure iron production technology.
The present invention is able to produce tapping using the ultrashort flow system that coal base shaft furnace and intermediate frequency (IF) smelting system form and is greater than 99.9% low impurity pure iron, can effectively automatic control and raising product quality as the high-quality base-material of amorphous nanocrystalline soft magnetic material.
The Constructing ideas for meeting " advanced, be applicable in, be reliable, is reasonable, economy, energy-saving and environmental protection ", has selected advanced and applicable skill Art is eliminated and is fallen behind, and focuses on energy-saving and environmental protection, to promote enterprise core competence and Business Economic Benefit.
Count according to related data: China sells about 6.4 ten thousand tons of amorphous band within 2014.China when predicting the year two thousand twenty Amorphous band demand is up to 350,000 tons or more.Therefore field is had a vast market in China's amorphous band.
In conclusion exploitation amorphous alloy strips have important practical significance and good market prospects and significant ring Border benefit.
Specific embodiment
The invention will be further described in conjunction with the embodiments.
A kind of antivacuum lower production amorphous material new process, it is characterised in that sequentially include the following steps:
Step 1, produces high-purity pure iron molten steel, and the preparation of high-purity pure iron molten steel uses ZL201410341008.4, name Referred to as: a kind of high-purity pure iron molten steel for the method production producing high-purity pure iron；
Step 2 is incorporated Si, B and P alloy at amorphous magnetic material molten steel, through crucible nozzle packet in high-purity pure iron molten steel Mouth seam flows on high-speed rotating cooling copper roller, and molten steel is by super hurried cold at strip.
Obvious: the present invention is shorter than traditional amorphous material process flow, and tooling device is few, and with low investment, low energy consumption, cost It is low, self controllable product quality.
Each process basic parameter:
1. ferriferous oxide composition: ferriferous oxide, it is desirable that Ni, Cu, Zn, Pb, Bi, Sn, Sb, As etc.≤0.01, C, S, P ≤ 0.015%
2. direct reduced iron composition:
It is as follows using the DRI result of coal base shaft furnace production using different grade raw ores:
TFe Degree of metalization C S P Acid non-soluble substance
1# 97.27 94.83 0.010 0.0107 0.0045 2.18
2# 91.08 93.32 0.023 0.012 0.010 6.59
3. 950-1200 DEG C of technological temperature of direct-reduction
4. 1620-1680 DEG C of intermediate frequency furnace fusion temperature/bottom blowing Ar, pressure 0.8-1.2kg/cm2。
5. molten steel composition:
The high purity iron chemical component produced using DRI:
C, Si, Mn, P, S, Cr, Ni, Mo, Al, Cu, Co, Ti, Nb, V, W, Pb, B, As, Ce, La etc. more than 20 in pure iron Constituent content is all respectively less than 0.008%,
6. alloy material composition: Si, B, P alloy configure basis requirement by amorphous material kind:
7. temperature is 1400-1450 DEG C in intermediate constant temperature packet crucible.
8. spray seam size: (by amorphous material kind and the configuration of spray carrying device) nozzle slit width is 0.4mm-0.8mm.
9. other by amorphous material kind and spray carrying device configuration.
Feature of the present invention:
Obvious: the present invention is melted using the antivacuum medium-frequency induction furnace collection of remodeling divides → refining → alloying → constant temperature four Integration both simplified technical process, and do not need vacuum melting and casting unit in conjunction with amorphous material technological equipment, Shorter than traditional amorphous material process flow, tooling device is few, and with low investment, low energy consumption, at low cost.
And the useless pollution antivacuum new process of of solid gas and tradition of the too many levels in the traditional iron-making and steel-making of cancellation are blast-melted Production pure iron technique is compared: one ton of 3N pure iron (C element content is based on 0.005%) of every production can reduce discharge CO2About 135.7kg is a kind of environmentally protective pure iron production technology.
This project is able to produce tapping using the ultrashort flow system that coal base shaft furnace and intermediate frequency (IF) smelting system form and is greater than 99.9% low impurity pure iron, can effectively automatic control and raising product quality as the high-quality base-material of amorphous nanocrystalline soft magnetic material
The Constructing ideas for meeting " advanced, be applicable in, be reliable, is reasonable, economy, energy-saving and environmental protection ", has selected advanced and applicable skill Art is eliminated and is fallen behind, and focuses on energy-saving and environmental protection, to promote enterprise core competence and Business Economic Benefit
Count according to related data: China sells about 6.4 ten thousand tons of amorphous band within 2014.China when predicting the year two thousand twenty Amorphous band demand is up to 350,000 tons or more.Therefore field is had a vast market in China's amorphous band.
In conclusion exploitation amorphous alloy strips have important practical significance and good market prospects and significant ring Border benefit.

Claims (5)

1. a kind of antivacuum lower production amorphous material new process, it is characterised in that sequentially include the following steps:
Step 1, produces high-purity pure iron molten steel, and the preparation of high-purity pure iron molten steel uses ZL201410341008.4, title Are as follows: a kind of high-purity pure iron molten steel for the method production for producing high-purity pure iron；
Step 2 is incorporated Si, B and P alloy into amorphous magnetic material molten steel in high-purity pure iron molten steel, is stitched through crucible nozzle packet mouth It flows on high-speed rotating cooling copper roller, molten steel is by super hurried cold at strip.
2. antivacuum lower production amorphous material new process according to claim 1, it is characterised in that: the step all one's life 950-1200 DEG C of technological temperature is reduced directly in production of high purity pure iron molten steel.
3. antivacuum lower production amorphous material new process according to claim 1, it is characterised in that: the step all one's life 1620-1680 DEG C of intermediate frequency furnace fusion temperature/bottom blowing Ar, pressure 0.8-1.2kg/cm in production of high purity pure iron molten steel2。
4. antivacuum lower production amorphous material new process according to claim 1, it is characterised in that: the step 2 In, temperature is 1400-1450 DEG C in intermediate constant temperature packet crucible.
5. antivacuum lower production amorphous material new process according to claim 1, it is characterised in that: the step 2 In, nozzle slit width is 0.4mm-0.8mm.
CN201811512975.7A 2018-12-11 2018-12-11 A kind of antivacuum lower production amorphous material new process Pending CN109468425A (en)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103495713A (en) * 2013-08-27 2014-01-08 安徽新天瑞电气有限公司 Amorphous strip spraying process
CN104141024A (en) * 2014-07-17 2014-11-12 武汉桂坤科技有限公司 Method for producing high-purity pure iron
CN104451466A (en) * 2014-12-24 2015-03-25 江苏锴博材料科技有限公司 Non-vacuum smelting process of amorphous nano-crystalline alloy strip
CN104745972A (en) * 2013-12-27 2015-07-01 井上明久 High magnetic flux density soft magnetic amorphous alloy with high ductility and high workability

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103495713A (en) * 2013-08-27 2014-01-08 安徽新天瑞电气有限公司 Amorphous strip spraying process
CN104745972A (en) * 2013-12-27 2015-07-01 井上明久 High magnetic flux density soft magnetic amorphous alloy with high ductility and high workability
CN104141024A (en) * 2014-07-17 2014-11-12 武汉桂坤科技有限公司 Method for producing high-purity pure iron
CN104451466A (en) * 2014-12-24 2015-03-25 江苏锴博材料科技有限公司 Non-vacuum smelting process of amorphous nano-crystalline alloy strip

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Application publication date: 20190315

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