CN101760579A - Fettling method for vanadium extracting converter - Google Patents
Fettling method for vanadium extracting converter Download PDFInfo
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- CN101760579A CN101760579A CN200810188165A CN200810188165A CN101760579A CN 101760579 A CN101760579 A CN 101760579A CN 200810188165 A CN200810188165 A CN 200810188165A CN 200810188165 A CN200810188165 A CN 200810188165A CN 101760579 A CN101760579 A CN 101760579A
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Abstract
The invention provides a fettling method for a vanadium extracting converter. The method comprises the following steps: fettling a fettling material at the eroded part of the vanadium extracting converter in a buckling way; and then, carrying out the sintering process in which the fettling material is heated by the vanadium extracting converter and a coal-oxygen burner. The fettling method of the invention can reduce the fettling time, keep the converter in a good operating condition for a long time and reduce the frequency of production halt caused by the maintenance of the converter, thereby improving the production efficiency and reducing the cost.
Description
Technical field
The present invention relates to a kind of fettling method of converter extracting vanadium, relate more specifically to a kind of method of using coaloust-oxygen gun to carry out fettling as converter extracting vanadium.
Background technology
Before steel-making, from the molten iron that contains the fusion formation of vanadium iron ore deposit, reclaim vanadium since the initial stage in 19th century.This process only is blown into air and/or oxygen generally not with slag former in molten iron, make vanadium oxidation wherein generate V
2O
5With Si, Ti in the molten iron and Mn etc. easily the oxide compound of the element of oxidation enter slag together mutually, the vanadium slag that acquisition can be utilized, the molten iron after the vanadium extraction is called as half steel.
In recent years, along with the steady growth in vanadium goods market, the output that increases the vanadium goods becomes the effective measure that improve steel mill's economic benefit.Use top and bottom combined blown converter to have the excellent metallurgical effect in vanadium extraction, process for extracting vanadium both domestic and external all develops to the direction that adopts top and bottom complex blowing steel-making.Top and bottom complex blowing refining is also promptly from converter top-blow oxygen, come the molten steel in the converter is smelted from converter bottom blowing rare gas element.With stirring of inert gas vanadium slag and carbon containing half steel strengthening the redox processes between them, thereby reduce content of vanadium in the half steel and the iron oxide content in the vanadium slag, correspondingly to improve the V in the vanadium slag
2O
5Content.
The key equipment of bottom blowing is the ventilated element (being commonly referred to gas permeable brick) of furnace bottom.Along with the development of building by laying bricks or stones with maintenance technology, the furnace life theoretical value of converter extracting vanadium can reach more than 6000 stoves, but be subjected to furnace high-temperature iron liquid, the strongly oxidizing slag (oxide compound of iron (being called for short TFe), content is up to 25-35 weight %) wash away with erosive and influence, and, compares under the harsh conditions in the bottom blowing gas pipeline because being in high temperature, rapid heat cycle etc. for a long time, gas permeable brick contacts with high-temperature molten steel for a long time, be easy to seriously be corroded, shortened the work-ing life of gas permeable brick, can't be synchronous with furnace life, even the runout accident may take place.Have only the 2000-3000 stove work-ing life of the gas permeable brick in the general converter extracting vanadium, converter extracting vanadium was in the pure top blast state of no bottom blowing during so the intermediary and later stages stove was used as a servant, and had reduced V in the vanadium slag
2O
5In fact content and vanadium recovery have reduced the effective production time of converter.Therefore wish and so that converter can remain intact the long period, to have higher production efficiency in process of production by the converter gas permeable brick is effectively safeguarded.Normally, when reaching the 100-300 millimeter, just need repair the thickness that is etched when gas permeable brick, otherwise, can cause gas permeable brick to be etched too seriously and can't repair, even also can cause accident such as runout.
Usually, owing to the erosion of slag and metal liquid, air-flow wash away and reason such as operation to cause vanadium extraction by converter blowing to produce the speed of deteriorating and the degree of employed top and bottom combined blown converter inhomogeneous, that is to say that along with the carrying out that produces a part keeps preferably then serious damage of state another part in the converter.Therefore in the process that vanadium extraction is produced, also need to repair converter, for example repair converter boiler face or gas permeable brick etc.,, improve the turnout in the converter stove labour to guarantee that converter can remain under the good operating state as far as possible for a long time.Owing to contain a large amount of vanadium in the slag during vanadium extraction is produced, therefore can not adopt and spatter the slag method part that is etched in the converter is repaired.Therefore the method for mending through button commonly used at present comes the boiler face and the gas permeable brick of converter extracting vanadium are safeguarded.Particularly, for 120 tons top and bottom combined blown converter commonly used at present, adopt the button reinforcing method to safeguard when the step of gas permeable brick is included in interior no molten steel of converter and slag, with the airshed of bottom blowing rare gas element be transferred to the 0-50 standard cubic meter/hour after pour the special-purpose air-permeable material for repairing furnace of 1-2.5 ton into converter, the converter that rocks back and forth allows air-permeable material for repairing furnace cover gas permeable brick and fills up and converter rested on zero-bit after the attack sites and carry out sintering.This special-purpose air-permeable material for repairing furnace main component comprises magnesium oxide and silicon-dioxide, and 110 ℃ of volume densities in following 24 hours are not more than 2.6 gram/cubic centimetres; Compressive strength in 3 hours, under 1000 ℃ more than or equal to 10 MPas, and under 1500 ℃ more than or equal to 25 MPas; Linear change rate at the 1500 ℃ of cast of density fireproof in following 3 hours stocklines is-2.5% to 0, and solidification value is 800-1100 ℃.Adopt the button reinforcing method to safeguard that the step of boiler face then comprises, when no molten steel and slag, the feed supplement of use boiler face button is detained benefit to the boiler face of converter in converter, and sintering is carried out in feed supplement to the boiler face button then.Described converter boiler face comprises steel wing furnace face of converting (also being the preceding big face of converter) and tapping wing furnace face (also being the back big face of converter).Contain magnesium oxide, simple substance carbon and auxiliary agent in the feed supplement of described boiler face button.For 120 tons top and bottom combined blown converter commonly used at present, the consumption of button feed supplement is generally the 1-3 ton.
But the sintering that boiler face and furnace bottom are detained after the benefit in the present maintaining converter method needs the long period, and the repairing of only carrying out each just probably needs 60-90 minute, and in vanadium extraction was produced, the production intermittent time of every stove generally was no more than 60 minutes.Therefore, the existing vanadium extraction by converter blowing furnace bottom or the boiler face that all need to stop production to converter behind every production certain hour repaired.Consider and enhance productivity, will reduce the time of stopping production and the number of times of stopping production as far as possible, that is to say that each stopping production all is the severity that is etched according to converter, only repairs the serious part of converter erosion degree.In addition, the production that the present filling mending material that uses can only keep the 5-12 stove also needs benefit is buckled in converter once more after the mending material quilt has corroded once more, and this needs to take the more production time undoubtedly, must delay rhythm of production.
This shows, during the vanadium extraction of prior art is produced, the method that the gas permeable brick of converter boiler face and furnace bottom is safeguarded exists and will guarantee that rhythm of production just can not in time safeguard the converter attack sites, corrode the contradiction that seriously causes the not enough reduction of bottom blowing production efficiency at converter later stage gas permeable brick, be unfavorable for the efficient of vanadium extraction production and the further raising of converter lining life.Therefore, the life-span of converter can't keep longer during traditional vanadium extraction was produced, thereby and can't take into account simultaneously the good operation state that converter is kept the longer time is in time safeguarded in converter, can reduce simultaneously the time that needs stopping production that converter is safeguarded as far as possible, thereby have problem than high efficiency.
Summary of the invention
The objective of the invention is to overcome in the prior art and can't when making the converter good operation state of maintenance long period, reduce the time that stops production converter is safeguarded, and cause the off-time long, the shortcoming that production efficiency is low, a kind of good operation state that can make converter keep the long period is provided, and the number of times that stops production in order to safeguard converter is less, thereby has the fettling method of the converter extracting vanadium of higher production efficiency.
The invention provides a kind of fettling method of converter extracting vanadium, wherein, this method comprises buckles the position that is etched of mending converter extracting vanadium with mending material, carries out sintering then, uses converter extracting vanadium and coaloust-oxygen gun that this mending material is heated in the agglomerating process.
Fettling method of the present invention can shorten the filling time, makes converter keep the good operation state of long period, has reduced owing to converter being keeped in repair the number of times that stops production, thereby has improved production efficiency, has reduced cost.
Description of drawings
Fig. 1 is the structural representation of the coaloust-oxygen gun of embodiment of the invention use.
Embodiment
The fettling method of converter extracting vanadium provided by the invention comprises buckles the position that is etched of mending converter extracting vanadium with mending material, carries out sintering then, uses converter extracting vanadium and coaloust-oxygen gun that this mending material is heated in the agglomerating process.
Wherein, described converter extracting vanadium comprises boiler face and gas permeable brick.Consider and reduce each time that stops production and repair as far as possible, enhance productivity, can repair the boiler face and the gas permeable brick of converter simultaneously.Because generally speaking, the area that is etched the position of boiler face is more much bigger than the area that is etched the position of gas permeable brick, and it is much bigger to make that the amount ratio of the mending material that is used to repair boiler face is used to repair the consumption of furnace charge of gas permeable brick.Therefore when repairing boiler face and gas permeable brick simultaneously, if only carry out sintering with converter extracting vanadium self heating, the needed sintering time of mending material of boiler face and gas permeable brick is different.Therefore, when repairing boiler face and gas permeable brick simultaneously, this method comprises the position that is etched of mending material being buckled the boiler face of mending converter extracting vanadium and gas permeable brick, carries out sintering by the converter extracting vanadium heating then, also uses coaloust-oxygen gun that the mending material of boiler face is heated in the agglomerating process.The boiler face of described converter extracting vanadium comprises converts steel side and tapping side.
According to fettling method provided by the invention, wherein, the Heating temperature of described coaloust-oxygen gun can be 1000-1800 ℃, be preferably 1200-1600 ℃, the Heating temperature of described converter extracting vanadium can be 700-1100 ℃, be preferably 800-1000 ℃, the agglomerating time can be 25-70 minute, is preferably 40-60 minute.
Described coaloust-oxygen gun can be existing any coaloust-oxygen gun that the mixed gas of oxygen and coal gas can be provided.In order better mending material to be carried out sintering, the gas flow of described coaloust-oxygen gun can for the 80-300 cubic meter/hour, be preferably the 100-200 cubic meter/hour, oxygen flow can for the 50-200 cubic meter/hour, be preferably the 80-120 cubic meter/hour.
Wherein, can be by control coal gas and the pressure of oxygen and gas flow and the oxygen flow that the conduit caliber is controlled coaloust-oxygen gun.For example, the gas flow that makes coaloust-oxygen gun be the 80-300 cubic meter/hour method can for control coal gas pressure be the 0.3-0.8 MPa, the caliber of gas conduit is the 20-50 millimeter; The oxygen flow that makes coaloust-oxygen gun be the 50-200 cubic meter/hour method can for control oxygen pressure be the 0.5-1.0 MPa, the caliber of oxygen catheter is the 10-20 millimeter.
According to fettling method provided by the invention, wherein, described coal gas can be preferably coke-oven gas for coke-oven gas and/or blast furnace gas.The composition of described coke-oven gas and blast furnace gas and be purchased producer and the trade mark is conventionally known to one of skill in the art.
According to fettling method provided by the invention, wherein, described mending material can comprise boiler face mending material and air-permeable material for repairing furnace.Under the preferable case, when being etched the position and being boiler face of converter, use the boiler face mending material, when being etched the position and being gas permeable brick of converter, use air-permeable material for repairing furnace.But the boiler face mending material also can be used for buckleing mends gas permeable brick, and air-permeable material for repairing furnace also can be used to detain the fettling face.
Described boiler face mending material can be the mending material of various repairing converter boiler faces known in the field.For example, described boiler face mending material contains magnesium oxide, simple substance carbon and auxiliary agent, gross weight with this boiler face mending material is as the criterion, described magnesian content can be 65-90 weight %, the content of described simple substance carbon can be 6-16 weight %, the content of described auxiliary agent can be 4-20 weight %, and described auxiliary agent is one or more in calcium oxide, silica flour and the resin.
Under the preferable case, the solidification value of described boiler face mending material is 700-1100 ℃, is not less than particle dia≤10 millimeter of 80% solid particulate in the described boiler face mending material.
The boiler face mending material that satisfies above-mentioned condition can be commercially available, and for example can be the big face mending material available from east, Shenyang magnesium refractory materials Manufacturing Co., Ltd, and the trade mark is BL, wherein contains the magnesium oxide that is not less than 80 weight %, is not less than the simple substance carbon of 5 weight %; Also can for available from Flos Bombacis Malabarici along rising the KS type mending material that group industry metallurgical material company limited produces, this mending material mainly contains magnesium oxide and simple substance carbon, magnesian content is more than the 70 weight %, the content of simple substance carbon is more than the 8 weight %.
Described air-permeable material for repairing furnace can be the mending material of various repairing converter furnace bottom gas permeable bricks known in the field.For example, air-permeable material for repairing furnace can this contain refractory materials and additive, is as the criterion with the gross weight of described air-permeable material for repairing furnace, and the content of described refractory materials can be 70-95 weight %, and described content of additive can be 5-30 weight %
Under the preferable case, the refractoriness of described refractory materials is not less than 1670 ℃, and the particle dia of solid particulate is not more than 4 millimeters in the described air-permeable material for repairing furnace, and 110 ℃ of volume densities in following 24 hours are not more than 2.6 gram/cubic centimetres; Compressive strength in 3 hours, under 1000 ℃ more than or equal to 10 MPas, and under 1500 ℃ more than or equal to 25 MPas; Linear change rate at the 1500 ℃ of cast of density fireproof in following 3 hours stocklines is-2.5% to 0, and the solidification value of described air-permeable material for repairing furnace is 800-1000 ℃.
Wherein, described refractory materials can contain magnesium oxide and coke powder, is benchmark with the gross weight of described refractory materials, and described magnesian content can be 75-90 weight %, and the content of described coke powder can be 10-25 weight %.Wherein, described additive can comprise one or more in the vitriol, clay, resin, pitch of silicate, the sodium of phosphoric acid salt, the sodium of sodium.
The air-permeable material for repairing furnace that satisfies above-mentioned condition can be commercially available, and for example can be the converter extracting vanadium material for repairing air brick of special refractories limited liability company of Wuhan RISESUN production.
The fettling method of converter extracting vanadium of the present invention comprises according to the degree that is etched of the gas permeable brick of the boiler face of converter and converter to be repaired, generally, whenever carrying out the vanadium extraction of 20-40 stove just need repair the boiler face and/or the gas permeable brick of converter, for example can be from producing the 20-40 stove of beginning, for example the 25th stove stops production the boiler face of converter is repaired, and repairs the 20-40 stove that the back first stove production is started at from this time again, the 36th stove for example, the boiler face to converter of stopping production carries out repairing once more; The 20-40 stove that begins from initial production, for example the 30th stove stops production the furnace bottom gas permeable brick of converter is repaired, and repairs the 20-40 stove that the back first stove production is started at from this time again, and the 20th stove for example carries out once more repairing to the gas permeable brick of converter.Under the preferable case, in order to reduce each time that stops production and repair as far as possible, enhance productivity, can carry out simultaneously the boiler face of converter is repaired and to the repairing air brick of converter, for example, whenever carrying out 30 stove vanadium extractions repairs the boiler face and the gas permeable brick of converter simultaneously.
When repairing, the consumption of mending material can be so that described mending material be filled in the 50-100 volume % that described boiler face and/or gas permeable brick are etched the position.For 120 tons top and bottom combined blown converter at present commonly used, the consumption of described mending material can be the 0.5-5 ton, is preferably the 1-3 ton, and wherein, the consumption with mending material that is used to repair the mending material of boiler face can be the 1-4 ton, is preferably the 1-2 ton; The consumption that is used to repair the ventilative mending material that changes can be the 0.5-2 ton, is preferably the 0.5-1 ton.
Because the bottom blowing airshed may blow away mending material when repairing converter, be unfavorable for that mending material is stable, be filled in the position that is etched in the converter securely, simultaneously from the angle of save energy, the method according to this invention, also be included in converter detained benefit before, for example to gas permeable brick detain mend before and/or to before the converting steel side and/or tapping side and detain benefit of converter, with the bottom blowing airshed be adjusted to the 0-20 cubic meter/hour, be preferably be adjusted to the 0-10 cubic meter/hour.
The present invention will be described in more detail below in conjunction with embodiment.
Embodiment 1
Present embodiment is used to illustrate the fettling method of converter extracting vanadium provided by the invention.
(1) after 120 tons of converter extracting vanadiums of the new steel vanadium of use Flos Bombacis Malabarici company steelworks whenever carry out 30 stove vanadium extractions production, bottom blowing stream of nitrogen gas amount is adjusted to 10 cubic metres/hour.In converter, pour the KS type mending material of 1 ton of Panzhihua Shunteng Group Metallurgical Materials Co., Ltd.'s manufacturer production into, the converter that rocks back and forth then allows air-permeable material for repairing furnace cover the gas permeable brick place, fill up the erosive pit, afterwards converter is rested on zero-bit (fire door is the position vertically upward) sintering 30 seconds (sintering temperature is 1000 ℃).
(2) and then in converter, pour the KS type mending material of 2.5 tons of Panzhihua Shunteng Group Metallurgical Materials Co., Ltd.'s manufacturer production into, converter is shaken to the stokehold 90 ° of positions stop.Coaloust-oxygen gun is stretched in the stove, turn on the gas-fire and the valve of oxygen, the flow that makes coal gas is 120 cubic metres/hour, and the flow of oxygen is 80 cubic metres/hour, the mixed gas in coaloust-oxygen gun exit is lighted, simultaneously the mending material of boiler face is heated 60 minutes (sintering temperature is 1000 ℃) at agglomerating.At last bottom blowing stream of nitrogen gas amount is recalled to 160 cubic metres/hour, proceed vanadium extraction production.
Carry out vanadium extraction production in 1 year according to such maintaining method.
Wherein, the structure of the coaloust-oxygen gun of use as shown in Figure 1,1 is gas entry, 2 is oxygen intake, and 3 is the outlet of the mixed gas of coal gas and oxygen, and the caliber of gas conduit is 35 millimeters, pressure is 0.5 MPa, and the caliber of oxygen catheter is 15 millimeters, and pressure is 0.7 MPa.
Present embodiment is used to illustrate the fettling method of converter extracting vanadium provided by the invention.
(1) after 120 tons of converter extracting vanadiums of the new steel vanadium of use Flos Bombacis Malabarici company steelworks whenever carry out 25 stove vanadium extractions production, bottom blowing stream of nitrogen gas amount is adjusted to 8 cubic metres/hour.In converter, pour the converter extracting vanadium material for repairing air brick that 1.5 tons of special refractories limited liability companys of Wuhan RISESUN produce into, the converter that rocks back and forth then allows air-permeable material for repairing furnace cover the gas permeable brick place, fill up the erosive pit, afterwards converter is rested on zero-bit (fire door is the position vertically upward) sintering 35 minutes (sintering temperature is 1100 ℃).At last bottom blowing stream of nitrogen gas amount is recalled to 160 cubic metres/hour, proceed vanadium extraction production.
(2) whenever carry out 30 stove vanadium extractions and produce after, in converter, pour the KS type mending material of 3 tons of Panzhihua Shunteng Group Metallurgical Materials Co., Ltd.'s manufacturer production into, converter is shaken to the stokehold 90 ° of positions stop.Coaloust-oxygen gun is stretched in the stove, turn on the gas-fire and the valve of oxygen, the flow that makes coal gas is 180 cubic metres/hour, the flow of oxygen is 120 cubic metres/hour, the mixed gas in coaloust-oxygen gun exit is lighted, simultaneously the mending material of boiler face is heated 35 minutes (sintering temperature is 1100 ℃) at agglomerating.Proceed vanadium extraction production then.
Carry out vanadium extraction production in 1 year according to such maintaining method.
Wherein, the structure of the coaloust-oxygen gun of use is with embodiment 1.
Comparative Examples 1
This Comparative Examples is used to illustrate the fettling method of existing converter extracting vanadium.
Carry out the maintenance of converter according to the method for embodiment 1, different is: do not use coaloust-oxygen gun to heat in the process of repairing boiler face, the agglomerating time is 90 minutes.
Carry out vanadium extraction production in 1 year according to such maintaining method.
Table 1 has been listed the vanadium extraction condition of production of embodiment and Comparative Examples.Wherein, vanadium extraction operating rate=÷ tap to tap time (tap to tap time+off-time) * 100%; Vanadium extraction stove number is the stove number of two average productions every day of converter extracting vanadium; Vanadium slag output is the vanadium slag output in 1 year of two converter extracting vanadiums.
Table 1
| Average filling time/minute | Vanadium extraction operating rate/% | Vanadium extraction stove number | Vanadium slag output/ten thousand ton | |
| Embodiment 1 | ??50 | ??78.3 | ??100.1 | ??20.5 |
| |
??70 | ??75.1 | ??98.6 | ??19.8 |
| Comparative Examples 1 | ??90 | ??71.9 | ??95.8 | ??18.2 |
Data from table 1 as can be seen, fettling method of the present invention can shorten the filling time, has reduced owing to converter being keeped in repair the number of times that stops production, thereby has improved vanadium extraction operating rate, vanadium extraction stove number and vanadium slag output, has reduced cost then.
Claims (11)
1. the fettling method of a converter extracting vanadium, this method comprises buckles the position that is etched of mending converter extracting vanadium with mending material, carries out sintering then, uses converter extracting vanadium and coaloust-oxygen gun that this mending material is heated in the agglomerating process.
2. method according to claim 1, wherein, described converter extracting vanadium comprises boiler face and gas permeable brick, this method comprises the position that is etched of mending material being buckled the boiler face of mending converter extracting vanadium and gas permeable brick, carry out sintering then, in the agglomerating process, use converter extracting vanadium and coaloust-oxygen gun that the mending material of boiler face is heated.
3. method according to claim 1 and 2, wherein, the Heating temperature of described coaloust-oxygen gun is 1200-1800 ℃, and the Heating temperature of described converter extracting vanadium is 700-1100 ℃, and the agglomerating time is 25-70 minute.
4. method according to claim 1 and 2, wherein, the gas flow of described coaloust-oxygen gun be the 80-300 cubic meter/hour, oxygen flow be the 50-200 cubic meter/hour.
5. method according to claim 4, wherein, the gas flow that makes coaloust-oxygen gun be the 80-300 cubic meter/hour method for control coal gas pressure be the 0.3-0.8 MPa, the caliber of gas conduit is the 20-50 millimeter; The oxygen flow that makes coaloust-oxygen gun be the 50-200 cubic meter/hour method for control oxygen pressure be the 0.5-1.0 MPa, the caliber of oxygen catheter is the 10-20 millimeter.
6. method according to claim 4, wherein, described coal gas is coke-oven gas and/or blast furnace gas.
7. method according to claim 1, wherein, described mending material comprises boiler face mending material and air-permeable material for repairing furnace, and what the boiler face that button is mended converter was etched the position is the boiler face mending material, and the gas permeable brick that button is mended converter is etched the air-permeable material for repairing furnace that is at position.
8. method according to claim 7, wherein, described boiler face mending material contains magnesium oxide, simple substance carbon and auxiliary agent, gross weight with this boiler face mending material is as the criterion, described magnesian content is 65-90 weight %, the content of described simple substance carbon is 6-16 weight %, the content of described auxiliary agent is 4-20 weight %, described auxiliary agent is one or more in calcium oxide, silica flour and the resin, the solidification value of described boiler face mending material is 800-1000 ℃, refractoriness is not less than 1670 ℃, particle dia≤10 of the above solid particulate of 80 weight % millimeter in the described boiler face mending material.
9. method according to claim 7, wherein, described air-permeable material for repairing furnace contains refractory materials and additive, gross weight with described air-permeable material for repairing furnace is as the criterion, the content of described refractory materials is 70-95 weight %, described content of additive is 5-30 weight %, and the refractoriness of described refractory materials is not less than 1670 ℃, the particle dia of solid particulate is not more than 4 millimeters in the described air-permeable material for repairing furnace, the solidification value of described air-permeable material for repairing furnace is 800-1000 ℃, wherein, described refractory materials contains magnesium oxide and coke powder, with described refractory materials gross weight be benchmark, described magnesian content is 75-90 weight %, the content of described coke powder is 10-25 weight %, and described additive comprises the phosphoric acid salt of sodium, the silicate of sodium, the vitriol of sodium, clay, resin, in the pitch one or more.
10. method according to claim 1 and 2, wherein, the consumption of described mending material makes described mending material be filled in the 50-100 volume % that described converter extracting vanadium is etched the position.
11. method according to claim 10, wherein, the consumption of described mending material is the 0.5-5 ton.
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| CN200810188165.0A CN101760579B (en) | 2008-12-24 | 2008-12-24 | Fettling method for vanadium extracting converter |
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| CN200810188165.0A CN101760579B (en) | 2008-12-24 | 2008-12-24 | Fettling method for vanadium extracting converter |
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| CN101760579B CN101760579B (en) | 2015-04-01 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102586602A (en) * | 2012-02-24 | 2012-07-18 | 河北钢铁股份有限公司承德分公司 | Method for evenly prolonging service life of electric furnace used for smelting ferrovanadium by electro-silicothermic process |
| CN107119169A (en) * | 2017-04-28 | 2017-09-01 | 邢台钢铁有限责任公司 | A kind of method of AOD furnace clinker furnace retaining |
| CN109870033A (en) * | 2019-03-15 | 2019-06-11 | 黄河科技学院 | It is a kind of to take off brick machine manually |
| CN112341219A (en) * | 2020-11-06 | 2021-02-09 | 鞍山市和丰耐火材料有限公司 | Environment-friendly converter fettling sand using schreyerite as sintering agent and production method thereof |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1197119A (en) * | 1997-04-18 | 1998-10-28 | 武汉瑞升技术研究所 | Modifying material for converter final slag and its prodn. tech. |
| CN1417549A (en) * | 2001-11-06 | 2003-05-14 | 武汉威林炉衬材料有限责任公司 | Large-area self-flowing converter repairing material |
| CN101319257B (en) * | 2008-07-03 | 2010-10-27 | 攀枝花新钢钒股份有限公司 | Bottom blowing ventilating structure of combined-blowing revolving furnace |
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2008
- 2008-12-24 CN CN200810188165.0A patent/CN101760579B/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102586602A (en) * | 2012-02-24 | 2012-07-18 | 河北钢铁股份有限公司承德分公司 | Method for evenly prolonging service life of electric furnace used for smelting ferrovanadium by electro-silicothermic process |
| CN107119169A (en) * | 2017-04-28 | 2017-09-01 | 邢台钢铁有限责任公司 | A kind of method of AOD furnace clinker furnace retaining |
| CN109870033A (en) * | 2019-03-15 | 2019-06-11 | 黄河科技学院 | It is a kind of to take off brick machine manually |
| CN112341219A (en) * | 2020-11-06 | 2021-02-09 | 鞍山市和丰耐火材料有限公司 | Environment-friendly converter fettling sand using schreyerite as sintering agent and production method thereof |
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| Publication number | Publication date |
|---|---|
| CN101760579B (en) | 2015-04-01 |
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