CN108441600A - The method for producing HRB600 with one secondary aluminium ash of electrolytic aluminium factory - Google Patents
The method for producing HRB600 with one secondary aluminium ash of electrolytic aluminium factory Download PDFInfo
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- CN108441600A CN108441600A CN201810190019.5A CN201810190019A CN108441600A CN 108441600 A CN108441600 A CN 108441600A CN 201810190019 A CN201810190019 A CN 201810190019A CN 108441600 A CN108441600 A CN 108441600A
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- aluminium
- aluminium ash
- hrb600
- ash
- steel
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Treatment Of Steel In Its Molten State (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention discloses a kind of methods producing HRB600 with one secondary aluminium ash of electrolytic aluminium factory to be added the secondary aluminium ash of electrolytic aluminium factory the binder of part, the aluminium ash ball of 20mm or so is pressed into using dry powder ball press；The sphere that will be suppressed, roping are for use to STEELMAKING PRODUCTION line；Converter, according to being firstly added aluminium ash ball and then adding the process of deoxidizing alloying elements, maintains original process for making operating method when producing HRB600；The ton steel dosage of the aluminium ash ball is in 1.5~3kg.The present invention can efficiently solve the secondary use problem of secondary aluminium ash, be applied to STEELMAKING PRODUCTION, turn waste into wealth, and reduce environmental pollution.
Description
Technical field
The present invention relates to a kind of methods producing HRB600 with one secondary aluminium ash of electrolytic aluminium factory.
Background technology
In process of production, the secondary aluminium ash of generation is intermediate to contain metallic aluminium, aluminium nitride, aluminium oxide, fluoride to electrolytic aluminium
And the heavy metals such as chromium, nickel, arsenic.According to current statistics it is found that during Aluminum Electrolysis Production, primary aluminum per ton generates 25~50 kilograms
Aluminium ash.Due to the special nature of aluminium ash, for molten steel nitrogen pick-up can be caused during process for making, so aluminium ash is considered as one
Kind is difficult to the danger wastes that full dose utilizes.Still further aspect, high intensity building materials steel are the sides of first developing of current construction(al)steel
To.The smelting of antidetonation spiral HRB600 produces on process for making, and crystal grain thinning, addition are used for using micro alloying element
VN alloy improves the intensity of steel using the effect for separating out reinforcing Grain boundary pinning of nitride.Consulting literatures（1）Su Xiao
Plum, Li little Zhong et al. deliver entitled on Central China Normal University's journal [J], the second phase in 2010：" aluminium lime-ash efficiently utilizes
There is following content statement in the paper of experimental study "：" aluminium ash, can in terms of production purified water flocculant, aluminium oxide ceramics
Generate the content statement of preferable economic benefit "；（2）Qiao Gui tinkling of pieces of jade et al. is delivered entitled on light metal magazine：" aluminium ash is in aluminium
Application study is added on electrolytic cell " paper in have following content statement：" secondary aluminium ash that electrolytic aluminium generates, aluminium oxide are brilliant
Body stable structure, it is difficult to the content statement that the return raw material as electrolytic aluminium uses ".（3）Guo Qing was the 21st phase in 2013《Material
Leader》On deliver it is entitled：Among the paper of " the recycling present situation of electrolytic aluminium lime-ash ", there is following content statement：" mesh
Before, the technique for capableing of scale development and application aluminium ash is concentrated mainly on the production technologies such as refractory material and purified water flocculant neck
Domain, but there are technological processes long, the serious short slab of secondary pollution ".It is stated according to above content it is found that there is presently no will be electric
Solve process of the aluminium ash of aluminium manufacturer as production HRB600.
Invention content
The purpose of the present invention is to provide a kind of methods producing HRB600 with one secondary aluminium ash of electrolytic aluminium factory, can be effectively
The secondary use for solving the problems, such as secondary aluminium ash, is applied to STEELMAKING PRODUCTION, turns waste into wealth, and reduces environmental pollution.
The object of the present invention is achieved like this, a method of HRB600 being produced with one secondary aluminium ash of electrolytic aluminium factory, it will be electric
The secondary aluminium ash for solving aluminium manufacturer, is added the binder of part, the aluminium ash ball of 20mm or so is pressed into using dry powder ball press；It will suppress
Sphere, roping is for use to STEELMAKING PRODUCTION line；Then converter adds when producing HRB600 according to aluminium ash ball is firstly added again
The process for entering deoxidizing alloying elements maintains original process for making operating method；The ton steel of the aluminium ash ball is used
Amount is in 1.5~3kg.
Inventor has found that in the production process of HRB600, the intermediate remaining metallic aluminium of aluminium ash has good deoxidation effect
Fruit, the intermediate AlN for the harmful property of environment of aluminium ash, deoxidation while, can carry out molten steel nitrogen pick-up, and the nitrogen in molten steel is even
It is precipitated in casting casting process, reacts with titanium elements, the v element in alloy, form titanium nitride and vanadium nitride, can play
Enhance the effect of steel strength.Some AlN is present in molten steel in the form of dissolved aluminum, can play refinement steel billet crystal grain,
Play the role of enhancing steel strength.Cadmium, chromium, copper in aluminium ash etc. is by the alloy in aluminium ash intermediate metallic aluminium and molten steel simultaneously
Element reduction becomes to the contributive alloying element of steel strength.Fluoride in aluminium ash can play the participation of Zhu Rong deoxidiers
The reaction of slagging.It can realize that aluminium ash harmless is handled in this way.
The present invention is based on other materials such as aluminium ash intermediate AlN, Al, Al2O3, the metallurgy in deoxidation in steel making technical process
Physical-chemical reaction feature, in conjunction with the production technology of HRB600, a kind of smelting process of exploitation, the intermediate ingredient of certain factory's aluminium ash is such as
Following table：Chemical composition %
Al Al2O3 K Mg SiO2 Na N Cl F
7.22 74.752 0.218 1.42 1.9 2.17 9.45 1.79 1.08
Inventive principle 1：In the smelting process of HRB600, using VN alloy, the effect of wherein VN alloy is using micro
Alloying element alloying in molten steel smelting process, nitrogen are also used as alloy element, in solidification of molten steel and are crystallized
Cheng Zhong, precipitated oxide and nitride play the role of pinning effect and crystal grain thinning in crystal boundary, and this technique is closed using vanadium nitrogen
Golden nitrogen pick-up, adds v element, and the wherein v element among VN alloy becomes oxide and enter among slag after being aoxidized
It is lost in, the equation that metallurgical reaction may carry out is as follows：
2[V]+3[O]=（V2O3）(1)
2[V]+5[O]=（V2O5）(2)
First principle of the present invention is exactly to participate in the deoxygenation among molten steel using the intermediate metallic aluminium of aluminium ash, reduce anti-
It answers（1）With（2）Oxygen, improve the recovery rate of VN alloy, reduce smelting cost, the equation that metallurgical reaction may carry out is such as
Under：
2[Al]+3[O] =[Al2O3] (3)
Inventive principle 2：The intermediate aluminium oxide of one secondary aluminium ash is to generate after the later molten aluminum secondary oxidation of aluminium electroloysis, or do not have
The aluminium oxide for participating in electrolysis completes the transformation formation later of crystal structure, so unique at high temperature.Aluminium ash is intermediate
α-Al2O3 active sites, the crystal defects such as dislocation, hole, crackle are considerably less, it is difficult to be dissociated into the Al3+ and O2- of ionic state
Or it is difficult to the anion radical formed with ice crystal and cation group.
Inventor has found, from the angle of crystal dynamics, i.e. thermodynamic condition and the equal energy of mechano-chemical reation principle
The bond energy for enough changing crystal, changes its crystal structure.It is very aobvious under conditions of 1500~1750 DEG C under the temperature condition of steel-making
So, the secondary aluminium ash that electrolytic aluminium process generates, the activity of the α-Al2O3 in aluminium ash, it will under thermodynamic conditions, from it is very poor to
Active direction conversion becomes the active material for participating in steel-making reaction, and this activities present is strong agglomeration, i.e.,
α-Al2O outer-shell electrons are very active, attract each other, and the cohesion of Al2O3 molecules is become a big cluster of grains, can be adsorbed de-
Field trash during oxygen inside molten steel is floated among the clinker at the top of molten steel under the action of buoyancy, is gone among molten steel
It removes, is the deoxidation agent material of cleaning molten steel, so using aluminium ash deoxidation, there is cleaning molten steel, improve the function of steel strength.
Inventive principle 3：Nitride is mainly AlN in aluminium ash, and main producing cause is that metal aluminium liquid connects with furnace gas
After touching, what the main component nitrogen among furnace gas was generated with metal reactive aluminum at high temperature, the reaction equation formed is as follows：
(4)
After molten steel inside is added, A1N is in high temperature（600~1200 DEG C）In the case of, in the case of there is [O] inside molten steel, to
Al2O3 is converted, and reaction equation is：
4[AlN]+3[O]→2[Al2O3]+4[N]（5）
The equation of the decomposition reaction that equally can also occur, reaction is as follows：
2[AlN]→2[Al]+2[N]（6）
According to above analysis it is found that the aluminium nitride among aluminium ash is under conditions of steel-making, can decompose reaction, and nitrogen is each
There are certain solubility, course of dissolution heat absorption in the iron of kind state（Dissolving exception of the nitrogen in）, therefore solubility with temperature
It increases and increases.When gaseous hydrogen and nitrogen dissolve in Liquid Iron or molten steel, gas molecule is first attracted on gas-steel interface,
And two atoms are resolved into, then these atoms are absorbed by molten steel, cause molten steel nitrogen pick-up, so using aluminium ash, can increase steel
Nitrogen content among liquid advantageously reduces the dosage of VN alloy.
Inventive principle 4：For the oxide of intermediate Se, As, Cd, Cr, the Pb of aluminium ash under conditions of steel-making, Cd, Cr are by aluminium ash
Intermediate metallic aluminium and graphitic carbon reduction enter molten steel, become the component part of steel（Se, Ba, Cd, Cr among steel and iron
Atom forms solid solution, and most of steel are limited in 0.02% or so for they, and the intermediate content of aluminium ash is in molten steel middle
In safe condition）；Its main reaction equation is as follows：
（7）
（8）
（9）
（10）
（11）
（12）
The oxide of As becomes the part composition refining slag of clinker, and refining slag is used as building materials or cement raw material, the change of As
It closes object to be fixed, realizes harmless treatment.
The oxide of Pb is reduced first, and then vaporization enters the dedusting ash system of steel-making, in rotary hearth furnace or reduction shaft furnace
Reduction treatment under, be recovered.
Cl can play the role of slugging in slagging process, can substitute the slugging material fluorite in steelmaking process
（CaF2）, wherein Cl is decomposed into dedusting ash system, forms villaumite, F is fixed on as fluoride among clinker, clinker application
In repairing the roads or cement, realize innoxious.
Se is also the important substance for reducing slag melting, can play the role of slugging, finally be fixed on slag produced from steel-smelting
Or among dedusting ash.
Aluminium ash is intermediate for the elements such as environment harmful Se, As, Cd, Cr, Pb and fluoride and sodium salt, is making steel
Among technique, heavy metal element can enter iron liquid, become alloying element and be utilized, sodium salt and fluoride being capable of playing
The effect of slag can substitute and reduce the fluorite dosage used among process for making.And after steel making working procedure application, become
Slag realizes the innocuously transformation of danger wastes in building materials and cement industry using being fixed later.
Based on above principle, aluminium ash is applied to the production of HRB600 by we, is realizing the intermediate beneficial element of aluminium ash
Value release is outer, the intermediate innocuously transformation for the harmful element of environment of aluminium ash.
In conclusion the method for the present invention can full dose using the secondary aluminium ash of electrolytic aluminium factory, realize the intermediate nuisance of aluminium ash
The innocuously transformation of matter.Present invention process can reduce the VN alloy in production HRB600, play the role of cost efficiency.
The reducing property for taking full advantage of aluminium nitride, the potential value for realizing aluminium nitride maximize.Utilize this technique productions
HRB600 degree of purity improves, and the performance of steel is optimized.
Specific implementation mode
The present invention is explained by taking 120 tons of converter producing HRB600 as an example.
The secondary aluminium ash of electrolytic aluminium factory is added part by the 1, method for producing HRB600 with one secondary aluminium ash of electrolytic aluminium factory
Binder is pressed into the aluminium ash ball of 20mm or so using dry powder ball press；The bonding agent is to make steel tradition bonding general in industry
Agent, there is no special characters in the present invention；
2, the sphere that will be suppressed, roping are for use to STEELMAKING PRODUCTION line；
3, converter is when producing HRB600, according to the technique for being firstly added aluminium ash ball and then adding deoxidizing alloying elements
Method maintains original process for making operating method；
4, the ton steel dosage of the aluminium ash ball is in 1.5~3kg.
Claims (1)
1. a kind of method producing HRB600 with one secondary aluminium ash of electrolytic aluminium factory, it is characterised in that a secondary aluminium of electrolytic aluminium factory is grey,
The binder for adding part, the aluminium ash ball of 20mm or so is pressed into using dry powder ball press；The sphere that will be suppressed, roping to steel-making
Production line is for use；Then converter adds deoxidizing alloying elements when producing HRB600, according to aluminium ash ball is firstly added
Process, maintain original process for making operating method；The ton steel dosage of the aluminium ash ball is in 1.5~3kg.
Priority Applications (1)
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| CN201810190019.5A CN108441600A (en) | 2018-03-08 | 2018-03-08 | The method for producing HRB600 with one secondary aluminium ash of electrolytic aluminium factory |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111826498A (en) * | 2020-07-31 | 2020-10-27 | 唐山飞迪冶金材料有限公司 | Additive for increasing strength of deformed steel bar and preparation method and application thereof |
| CN112453009A (en) * | 2020-09-27 | 2021-03-09 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for green harmless resource utilization of aluminum ash |
| CN113981174A (en) * | 2021-11-20 | 2022-01-28 | 甘肃酒钢集团宏兴钢铁股份有限公司 | LF furnace rapid slagging method for smelting hot-rolled ribbed steel bars |
| CN114058788A (en) * | 2021-11-19 | 2022-02-18 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for preparing micro-nitrogen deoxidizing alloy by using aluminum ash |
| CN114085951A (en) * | 2021-11-20 | 2022-02-25 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Nitrogen-increasing refining slag for producing vanadium microalloyed deformed steel bar |
| CN115287395A (en) * | 2022-01-13 | 2022-11-04 | 王强 | Method for producing high-strength construction steel HRB500 by using deactivated residual oil hydrogenation catalyst |
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| CN102776328A (en) * | 2012-08-21 | 2012-11-14 | 北京科技大学 | Preparation method of steel ladle slag modifier for low-oxygen low-sulfur high-nitrogen steel |
| CN107201424A (en) * | 2017-06-15 | 2017-09-26 | 王强 | The technique that a kind of utilization electrolytic aluminium factory aluminium cell slag from delining produces deoxidizer in steel production |
| CN107245549A (en) * | 2017-06-15 | 2017-10-13 | 王强 | A kind of the efficient of electrolytic aluminium factory aluminium ash utilizes technique |
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2018
- 2018-03-08 CN CN201810190019.5A patent/CN108441600A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102776328A (en) * | 2012-08-21 | 2012-11-14 | 北京科技大学 | Preparation method of steel ladle slag modifier for low-oxygen low-sulfur high-nitrogen steel |
| CN107201424A (en) * | 2017-06-15 | 2017-09-26 | 王强 | The technique that a kind of utilization electrolytic aluminium factory aluminium cell slag from delining produces deoxidizer in steel production |
| CN107245549A (en) * | 2017-06-15 | 2017-10-13 | 王强 | A kind of the efficient of electrolytic aluminium factory aluminium ash utilizes technique |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111826498A (en) * | 2020-07-31 | 2020-10-27 | 唐山飞迪冶金材料有限公司 | Additive for increasing strength of deformed steel bar and preparation method and application thereof |
| CN112453009A (en) * | 2020-09-27 | 2021-03-09 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for green harmless resource utilization of aluminum ash |
| CN112453009B (en) * | 2020-09-27 | 2022-06-03 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for green harmless resource utilization of aluminum ash |
| CN114058788A (en) * | 2021-11-19 | 2022-02-18 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Method for preparing micro-nitrogen deoxidizing alloy by using aluminum ash |
| CN113981174A (en) * | 2021-11-20 | 2022-01-28 | 甘肃酒钢集团宏兴钢铁股份有限公司 | LF furnace rapid slagging method for smelting hot-rolled ribbed steel bars |
| CN114085951A (en) * | 2021-11-20 | 2022-02-25 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Nitrogen-increasing refining slag for producing vanadium microalloyed deformed steel bar |
| CN115287395A (en) * | 2022-01-13 | 2022-11-04 | 王强 | Method for producing high-strength construction steel HRB500 by using deactivated residual oil hydrogenation catalyst |
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Application publication date: 20180824 |