CN105149530A - Knotting method for ferrovanadium ingot mould - Google Patents
Knotting method for ferrovanadium ingot mould Download PDFInfo
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- CN105149530A CN105149530A CN201510514863.5A CN201510514863A CN105149530A CN 105149530 A CN105149530 A CN 105149530A CN 201510514863 A CN201510514863 A CN 201510514863A CN 105149530 A CN105149530 A CN 105149530A
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- ingot mould
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Abstract
The invention discloses a knotting method for a ferrovanadium ingot mould. According to the knotting method, a compact fireproof layer can be formed on the inner wall of the ingot mould, the amount of ferrovanadium permeating into the fireproof layer in the cooling process of the ingot mould is lowered, and the amount of generated penetrated alloy is lowered. The knotting method comprises the steps that 1, the fireproof layer is formed on the ferrovanadium ingot mould through knotting materials in a knotted manner; 2, after knotting of the fireproof layer is finished, the knotting materials are brushed on the fireproof layer on the inner wall of the ingot mould till the whole inner wall is brushed with the knotting materials; and 3, the knotting materials brushed on the fireproof layer are baked till the knotting materials are dried. According to the knotting method, the knotting quality of the ingot mould can be improved, and the penetrated alloy is greatly reduced; and the ferrovanadium smelting recovery rate is increased, and the ferrovanadium processing cost is reduced.
Description
Technical field
The present invention relates to a kind of ramming process, especially a kind of knotting method of vanadium iron ingot mould.
Background technology
Known: after stove smelting ferrovanadium of tumbling is complete, vanadium iron should be poured in ingot mould and cool.The inwall of ingot mould adopts stamp mass, is formed by knots tied one deck flame retardant coating.The stamp mass that common ingot mould adopts magnesia and bittern to form forms flame retardant coating on the inwall of ingot mould.Because gap between the knotting layer magnesia particle that magnesia and bittern form is comparatively large, easily infiltrate knotting layer in the process that vanadium iron cools in ingot mould, form alloying, larger on the impact of smelting yield; Simultaneously due to vanadium iron and the adhesion of knotting layer, the cemented alloy layer during demoulding outside vanadium iron cake is difficult to cleaning.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of knotting method of vanadium iron ingot mould, this knotting method can form fine and close flame retardant coating on the inwall of ingot mould, easily penetrate into the amount in flame retardant coating in the process that minimizing vanadium iron cools in ingot mould, reduce alloying generation.
The technical solution adopted for the present invention to solve the technical problems is: the knotting method of vanadium iron ingot mould, comprises the following steps:
1) stamp mass is adopted to tie a knot on the inwall of vanadium iron ingot mould one deck flame retardant coating;
2), after flame retardant coating has been tied a knot, stamp mass is used to brush on the flame retardant coating of ingot mould inwall, until brush complete inwall; Coating layer thickness is 3 ~ 5mm;
3) stamp mass that flame retardant coating is brushed is toasted, till oven dry.
Preferably, described stamp mass is magnesia and bittern.
Further, in step 3) in the stamp mass that flame retardant coating is brushed is toasted, first by little fire baking 3 ~ 5 hours, then by big fire baking 7 ~ 15 hours; Described little fiery temperature is 250 DEG C ~ 300 DEG C, and big fire temperature is 800 DEG C ~ 850 DEG C.
The invention has the beneficial effects as follows: the knotting method of vanadium iron ingot mould of the present invention, first by tiing a knot one deck flame retardant coating on vanadium iron ingot mould inwall, then on flame retardant coating, smearing one deck stamp mass, finally stamp mass being dried.Because conventional method is just tied a knot one deck flame retardant coating on ingot iron mould inwall, the intergranular gap of its stamp mass of flame retardant coating adopting conventional method to obtain is comparatively large, easily penetrates in flame retardant coating, thus form a large amount of alloying in the process that vanadium iron cools in ingot mould.Knotting method of the present invention, by smearing one deck stamp mass on flame retardant coating, and by toasting the stamp mass smeared, thus the stamp mass particle that flame retardant coating is smeared can be penetrated in the gap in flame retardant coating between particle and particle, thus flame retardant coating is made to form fine and close knotting layer; Penetrate in flame retardant coating in the process avoiding vanadium iron to cool in ingot mould.Therefore improve ingot mould knotting quality, significantly reduce alloying; Improve vanadium iron smelting recovery, reduce vanadium iron processing cost.
Detailed description of the invention
Below in conjunction with embodiment, the present invention is further described.
The knotting method of vanadium iron ingot mould of the present invention, comprises the following steps:
1) stamp mass is adopted to tie a knot on the inwall of vanadium iron ingot mould one deck flame retardant coating;
2), after flame retardant coating has been tied a knot, stamp mass is used to brush on ingot mould inwall, until brush complete inwall; Coating layer thickness is 3 ~ 5mm;
3) stamp mass that flame retardant coating is brushed is toasted, till oven dry.
In step 1) in adopt stamp mass to tie a knot on the inwall of vanadium iron ingot mould one deck flame retardant coating, adopt traditional ramming process method to realize.By step 1) can make on vanadium iron ingot mould inwall, form one deck basis flame retardant coating.
In step 2) in after flame retardant coating tie a knot, use stamp mass is brushed on ingot mould inwall, until brush complete inwall, coating layer thickness is 3 ~ 5mm.Flame retardant coating smears stamp mass, and part stamp mass will penetrate in the gap in basic flame retardant coating between particle, thus can fill the gap in flame retardant coating between particle, improves the compactness of flame retardant coating.
In step 3) in by toasting the stamp mass that flame retardant coating is smeared, thus the stamp mass Particle Acceleration motion that is arranged on flame retardant coating can be made, penetrate into further in the gap in flame retardant coating between particle, make flame retardant coating finer and close.By the stamp mass that baking flame retardant coating is smeared, stamp mass Quick-air-drying can be made, be bonded on flame retardant coating.
By above-mentioned steps 2) and step 3) can step 1 be made) in formed basic flame retardant coating finer and close, the comparatively wide arc gap between the particle in basic flame retardant coating can be reduced.Thus penetrate in a large number in flame retardant coating in the process that vanadium iron can be avoided to cool in ingot mould, form alloying.
In sum, the knotting method of vanadium iron ingot mould of the present invention, first by tiing a knot one deck flame retardant coating on vanadium iron ingot mould inwall, then smearing one deck stamp mass, finally drying stamp mass on flame retardant coating.Because conventional method is just tied a knot one deck flame retardant coating on ingot iron mould inwall, the intergranular gap of its stamp mass of flame retardant coating adopting conventional method to obtain is comparatively large, easily penetrates in flame retardant coating, thus form a large amount of alloying in the process that vanadium iron cools in ingot mould.Knotting method of the present invention, by smearing one deck stamp mass on flame retardant coating, and by toasting the stamp mass smeared, thus the stamp mass particle that flame retardant coating is smeared can be penetrated in the gap in flame retardant coating between particle and particle, thus flame retardant coating is made to form fine and close knotting layer; Penetrate in flame retardant coating in the process avoiding vanadium iron to cool in ingot mould.Therefore improve ingot mould knotting quality, significantly reduce alloying; Improve vanadium iron smelting recovery, reduce vanadium iron processing cost.
In order to reduce costs, preferably, described stamp mass is magnesia and bittern.Because stamp mass is magnesia and bittern, wherein magnesia and bittern are conventional stamp mass, easily obtain, cost is lower, can effectively reduce costs.
In order to avoid the stamp mass spread upon on flame retardant coating occurs that large area comes off after the drying, ensure that the stamp mass spread upon on flame retardant coating can penetrate in flame retardant coating, makes flame retardant coating finer and close simultaneously.Further, in step 3) in adopt coal gas the stamp mass that flame retardant coating is brushed is toasted, first by little fire baking 3 ~ 5 hours, then by big fire baking 7 ~ 15 hours.Described little fiery temperature is 250 DEG C ~ 300 DEG C, and big fire temperature is 800 DEG C ~ 850 DEG C.
The knotting method adopting vanadium iron ingot mould of the present invention arranges knotting layer on vanadium iron ingot mould.
Embodiment 1
1, the stamp mass first using magnesia and bittern to form is tied a knot the flame retardant coating of a layer thickness 120 ~ 160mm on the inwall of ingot mould.
2, after flame retardant coating knotting, use magnesium chamotte bittern slurry to brush the whole inwall of ingot mould, coating layer thickness is 3 ~ 5mm.
3, brushing after, adopt coal gas toast, first adopt temperature be 250 DEG C ~ 300 DEG C little fire baking 3 hours, the big fire being then 800 DEG C ~ 850 DEG C by temperature toasts 7 hours.
Embodiment 2
1, the stamp mass first using magnesia and bittern to form is tied a knot the flame retardant coating of a layer thickness 120 ~ 160mm on the inwall of ingot mould.
2, after flame retardant coating knotting, use magnesium chamotte bittern slurry to brush the whole inwall of ingot mould, coating layer thickness is 3 ~ 5mm.
3, brushing after, adopt coal gas toast, first adopt temperature be 250 DEG C ~ 300 DEG C little fire baking 4 hours, the big fire being then 800 DEG C ~ 850 DEG C by temperature toasts 11 hours.
Embodiment 3
1, the stamp mass first using magnesia and bittern to form is tied a knot the flame retardant coating of a layer thickness 120 ~ 160mm on the inwall of ingot mould.
2, after flame retardant coating knotting, use magnesium chamotte bittern slurry to brush the whole inwall of ingot mould, coating layer thickness is 3 ~ 5mm.
3, brushing after, adopt coal gas toast, first adopt temperature be 250 DEG C ~ 300 DEG C little fire baking 5 hours, the big fire being then 800 DEG C ~ 850 DEG C by temperature toasts 15 hours.
Embodiment 4
1, the stamp mass first using magnesia and bittern to form is tied a knot the flame retardant coating of a layer thickness 120 ~ 160mm on the inwall of ingot mould.
2, after flame retardant coating knotting, use magnesium chamotte bittern slurry to brush at ingot mould inwall, coating layer thickness is 3 ~ 5mm.
3, brushing after, adopt coal gas toast, first adopt temperature be 250 DEG C ~ 300 DEG C little fire baking 2 hours, the big fire being then 800 DEG C ~ 850 DEG C by temperature toasts 6 hours.
Embodiment 5
1, the stamp mass first using magnesia and bittern to form is tied a knot the flame retardant coating of a layer thickness 120 ~ 160mm on the inwall of ingot mould.
2, after flame retardant coating knotting, use magnesium chamotte bittern slurry to brush at ingot mould inwall, coating layer thickness is 3 ~ 5mm.
3, brushing after, adopt coal gas toast, first adopt temperature be 250 DEG C ~ 300 DEG C little fire baking 6 hours, the big fire being then 800 DEG C ~ 850 DEG C by temperature toasts 16 hours.
Comparative example 1
1, the stamp mass first using magnesia and bittern to form is tied a knot the flame retardant coating of a layer thickness 120 ~ 160mm on the inwall of ingot mould.
2, flame retardant coating knotting after, adopt coal gas toast, first adopt temperature be 250 DEG C ~ 300 DEG C little fire baking 3 ~ 5 hours, then by temperature be 800 DEG C ~ 850 DEG C big fire baking 7 ~ 15 hours.
Following form can be obtained by above-described embodiment and comparative example:
Continued
Be traditional knotting method from the comparative example 1 above form, flame retardant coating does not smear stamp mass; Follow-up drying and processing method is identical.
Can be found out by comparative example 1 and embodiment 1 to 5, under the prerequisite that other conditions are identical, how much whether inwall flame retardant coating is smeared stamp mass has decisive role to alloying generation.Adopt the knotting method of vanadium iron ingot mould of the present invention, first by tiing a knot one deck flame retardant coating on vanadium iron ingot mould inwall, then on flame retardant coating, smearing one deck stamp mass, finally stamp mass being dried.Thus the stamp mass particle that flame retardant coating is smeared can be penetrated in the gap in flame retardant coating between particle and particle, make flame retardant coating form fine and close knotting layer; Penetrate in flame retardant coating in the process avoiding vanadium iron to cool in ingot mould.Therefore improve ingot mould knotting quality, significantly reduce alloying; Improve vanadium iron smelting recovery, reduce vanadium iron processing cost.
Can be found out by embodiment 1 to embodiment 5:
In embodiment after the stamp mass of flame retardant coating brushing one deck 3 ~ 5mm, employing temperature is that the little fire of 250 DEG C ~ 300 DEG C toasts 3 ~ 6 hours, and employing temperature is that the big fire of 800 DEG C ~ 850 DEG C is toasted 7 ~ 16 hours; The flame retardant coating finally obtained all there will not be and comes off, and the alloying amount simultaneously in use produced is less.
But can find out that little fiery baking time is 6 hours when temperature is 250 DEG C ~ 300 DEG C in example 4, temperature is the big fire baking time of 800 DEG C ~ 850 DEG C is 16 hours, although the ingot mould flame retardant coating obtained is without coming off, its energy consumption consumed is higher thus can increase cost.
Can find out that in embodiment 5 little fiery baking time is 2 hours when temperature is 250 DEG C ~ 300 DEG C, temperature is the big fire baking time of 800 DEG C ~ 850 DEG C is 6 hours, in the middle part of the ingot mould flame retardant coating obtained and bottom comes off comparatively serious, and flame retardant coating is not dried completely simultaneously, cannot normally use.
In sum, the little fire being 250 DEG C ~ 300 DEG C when employing temperature toasts 3 ~ 6 hours, and employing temperature is that the big fire of 800 DEG C ~ 850 DEG C is toasted 7 ~ 16 hours; Produce the flame retardant coating obtained, compactness is the highest, best in quality, the degree that drops after stamp mass oven dry simultaneously on flame retardant coating is the lightest, meet instructions for use, and energy consumption cost is minimum, in the process that vanadium iron cools in ingot mould, penetrates into the alloying formed in flame retardant coating minimum.
Claims (3)
1. the knotting method of vanadium iron ingot mould, is characterized in that comprising the following steps:
1) stamp mass is adopted to tie a knot on the inwall of vanadium iron ingot mould one deck flame retardant coating;
2), after flame retardant coating has been tied a knot, stamp mass is used to brush on ingot mould inwall, until brush complete inwall; Coating layer thickness 3 ~ 5mm;
3) stamp mass that flame retardant coating is brushed is toasted, till oven dry.
2. the knotting method of vanadium iron ingot mould as claimed in claim 1, is characterized in that: described stamp mass is magnesia and bittern.
3. the knotting method of vanadium iron ingot mould as claimed in claim 2, is characterized in that: in step 3) in the stamp mass that flame retardant coating is brushed is toasted, first by little fire baking 3 ~ 5 hours, then by big fire baking 7 ~ 15 hours; Described little fiery temperature is 250 DEG C ~ 300 DEG C, and big fire temperature is 800 DEG C ~ 850 DEG C.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105903915A (en) * | 2016-05-16 | 2016-08-31 | 攀钢集团攀枝花钢铁研究院有限公司 | Knotting method of casting ingot mold in preparation process of vanadium-iron alloy |
| CN107297473A (en) * | 2017-08-07 | 2017-10-27 | 攀钢集团钒业有限公司 | Vanadium iron ingot mould and its knotting method for tilt bed smelting furnace |
| CN108044067A (en) * | 2017-12-14 | 2018-05-18 | 攀枝花市仁通钒业有限公司 | For the vanadium iron ingot mould structure of smelting furnace |
| CN108080589A (en) * | 2017-12-14 | 2018-05-29 | 攀枝花市仁通钒业有限公司 | For the knotting method of vanadium iron ingot mould structure |
| CN110280728A (en) * | 2019-08-05 | 2019-09-27 | 攀钢集团钒钛资源股份有限公司 | Large size tumble furnace smelt FeV80 ingot mould knotting method and ingot mould |
| CN115319034A (en) * | 2022-08-18 | 2022-11-11 | 攀钢集团攀枝花钢铁研究院有限公司 | Ferrovanadium alloy casting ingot mold and preparation method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105903915A (en) * | 2016-05-16 | 2016-08-31 | 攀钢集团攀枝花钢铁研究院有限公司 | Knotting method of casting ingot mold in preparation process of vanadium-iron alloy |
| CN107297473A (en) * | 2017-08-07 | 2017-10-27 | 攀钢集团钒业有限公司 | Vanadium iron ingot mould and its knotting method for tilt bed smelting furnace |
| CN107297473B (en) * | 2017-08-07 | 2019-06-14 | 攀钢集团钒钛资源股份有限公司 | Vanadium iron ingot mould and its knotting method for tilt bed smelting furnace |
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| CN108080589A (en) * | 2017-12-14 | 2018-05-29 | 攀枝花市仁通钒业有限公司 | For the knotting method of vanadium iron ingot mould structure |
| CN110280728A (en) * | 2019-08-05 | 2019-09-27 | 攀钢集团钒钛资源股份有限公司 | Large size tumble furnace smelt FeV80 ingot mould knotting method and ingot mould |
| CN115319034A (en) * | 2022-08-18 | 2022-11-11 | 攀钢集团攀枝花钢铁研究院有限公司 | Ferrovanadium alloy casting ingot mold and preparation method thereof |
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Effective date of registration: 20210824 Address after: 615000 vanadium and Titanium Industrial Park, Xichang City, Liangshan Yi Autonomous Prefecture, Sichuan Province Patentee after: Panzhihua Iron and Steel Group Xichang vanadium products Technology Co.,Ltd. Address before: 615032 Xichang steel vanadium Co., Ltd. of Panzhihua Iron and Steel Group, Jiuzhai Industrial Park, Xichang City, Liangshan Yi Autonomous Prefecture, Sichuan Province Patentee before: XICHANG STEEL VANADIUM CO., LTD., PANGANG Group |