CN111235349A - Method for producing silicon-vanadium alloy by smelting vanadium-rich slag and silicon-vanadium alloy - Google Patents
Method for producing silicon-vanadium alloy by smelting vanadium-rich slag and silicon-vanadium alloy Download PDFInfo
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- CN111235349A CN111235349A CN202010162796.6A CN202010162796A CN111235349A CN 111235349 A CN111235349 A CN 111235349A CN 202010162796 A CN202010162796 A CN 202010162796A CN 111235349 A CN111235349 A CN 111235349A
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- 239000002893 slag Substances 0.000 title claims abstract description 115
- 229910052720 vanadium Inorganic materials 0.000 title claims abstract description 93
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 title claims abstract description 92
- 229910000756 V alloy Inorganic materials 0.000 title claims abstract description 69
- MANBDHUBXBMZNV-UHFFFAOYSA-N [V]=[Si] Chemical compound [V]=[Si] MANBDHUBXBMZNV-UHFFFAOYSA-N 0.000 title claims abstract description 69
- 238000003723 Smelting Methods 0.000 title claims abstract description 58
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 29
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 58
- 238000000034 method Methods 0.000 claims abstract description 36
- 229910052742 iron Inorganic materials 0.000 claims abstract description 25
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 18
- 238000005266 casting Methods 0.000 claims abstract description 15
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 229910052710 silicon Inorganic materials 0.000 claims description 18
- 239000010703 silicon Substances 0.000 claims description 12
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 9
- 238000007670 refining Methods 0.000 claims description 9
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- 235000019738 Limestone Nutrition 0.000 claims description 5
- 239000006028 limestone Substances 0.000 claims description 5
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 4
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 239000004571 lime Substances 0.000 claims description 4
- 229910001021 Ferroalloy Inorganic materials 0.000 abstract description 3
- 230000008901 benefit Effects 0.000 abstract description 3
- 238000002360 preparation method Methods 0.000 abstract description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 11
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 10
- 239000000463 material Substances 0.000 description 9
- 239000000047 product Substances 0.000 description 7
- 239000000292 calcium oxide Substances 0.000 description 5
- 235000012255 calcium oxide Nutrition 0.000 description 5
- 238000011010 flushing procedure Methods 0.000 description 5
- 238000010791 quenching Methods 0.000 description 5
- 230000000171 quenching effect Effects 0.000 description 5
- 238000010079 rubber tapping Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 229910000628 Ferrovanadium Inorganic materials 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000002390 adhesive tape Substances 0.000 description 4
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 description 4
- 238000002844 melting Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000009628 steelmaking Methods 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 239000000956 alloy Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 3
- CPLXHLVBOLITMK-UHFFFAOYSA-N Magnesium oxide Chemical compound [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- 229910001199 N alloy Inorganic materials 0.000 description 2
- GNTDGMZSJNCJKK-UHFFFAOYSA-N Vanadium(V) oxide Inorganic materials O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- SKKMWRVAJNPLFY-UHFFFAOYSA-N azanylidynevanadium Chemical compound [V]#N SKKMWRVAJNPLFY-UHFFFAOYSA-N 0.000 description 2
- 229910052681 coesite Inorganic materials 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 229910052906 cristobalite Inorganic materials 0.000 description 2
- -1 ferrovanadium nitride Chemical class 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- PNXOJQQRXBVKEX-UHFFFAOYSA-N iron vanadium Chemical compound [V].[Fe] PNXOJQQRXBVKEX-UHFFFAOYSA-N 0.000 description 2
- SZVJSHCCFOBDDC-UHFFFAOYSA-N iron(II,III) oxide Inorganic materials O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 230000001698 pyrogenic effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 229910052682 stishovite Inorganic materials 0.000 description 2
- 229910052905 tridymite Inorganic materials 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000005303 weighing Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- LPUQAYUQRXPFSQ-DFWYDOINSA-M monosodium L-glutamate Chemical compound [Na+].[O-]C(=O)[C@@H](N)CCC(O)=O LPUQAYUQRXPFSQ-DFWYDOINSA-M 0.000 description 1
- 235000013923 monosodium glutamate Nutrition 0.000 description 1
- 239000004223 monosodium glutamate Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 235000015598 salt intake Nutrition 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- GFNGCDBZVSLSFT-UHFFFAOYSA-N titanium vanadium Chemical compound [Ti].[V] GFNGCDBZVSLSFT-UHFFFAOYSA-N 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 229910001845 yogo sapphire Inorganic materials 0.000 description 1
Classifications
-
- 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
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/52—Manufacture of steel in electric furnaces
- C21C5/54—Processes yielding slags of special composition
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B34/00—Obtaining refractory metals
- C22B34/20—Obtaining niobium, tantalum or vanadium
- C22B34/22—Obtaining vanadium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C35/00—Master alloys for iron or steel
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Silicon Compounds (AREA)
Abstract
The invention belongs to the technical field of ferroalloy preparation, and particularly relates to a method for producing a silicon-vanadium alloy by smelting vanadium-rich slag and a silicon-vanadium alloy. The method for producing the silicon-vanadium alloy by smelting the vanadium-rich slag comprises the following steps: (1) adding vanadium-rich slag, a siliceous reducing agent and a slag former into an electric furnace according to the mass ratio of (35.86-51.08) to (5.92-22.07) to (33.58-56.25) for smelting, and reducing vanadium in the slag into molten iron; (2) mixing the slag and the iron, casting by an ingot mould, crushing and finishing to obtain the silicon-vanadium alloy. The method for smelting and producing the silicon-vanadium alloy by the vanadium-rich slag has the advantages of simple process flow, high production efficiency, low cost and the like.
Description
Technical Field
The invention belongs to the technical field of ferroalloy preparation, and particularly relates to a method for producing a silicon-vanadium alloy by smelting vanadium-rich slag and a silicon-vanadium alloy.
Background
Vanadium is 'industrial monosodium glutamate', and the vanadium added into steel can obviously improve the properties of strength, toughness, wear resistance, corrosion resistance and the like, and is widely applied to the steel industry.
Vanadium is always associated in nature with other elements and is often recovered as a by-product. Vanadium titano-magnetite is the most important existing state of vanadium, and the smelting process is generally as follows: after mineral separation, the vanadium-containing molten iron is firstly sent into a blast furnace for smelting to obtain vanadium-containing molten iron, and then vanadium is enriched into slag through selective oxidation by adopting methods such as a ladle shaking method, an atomization method, an air bottom blowing converter method, an oxygen top blowing converter method and the like.
At present, the mainstream process for resource utilization of vanadium-rich slag comprises the following steps: firstly, preparing vanadium sheet (V) by using wet process comprising the procedures of salt adding roasting-leaching-vanadium precipitation-melting and the like2O5) And then vanadium sheets are utilized to prepare ferrovanadium, ferrovanadium nitride, vanadium-nitrogen alloy, silicon-vanadium alloy and the like required by steel-making alloying through a series of pyrogenic process procedures. The vanadium resource utilization mode has the disadvantages of long process, low production efficiency and high cost, and particularly, the problems of high salt consumption, low conversion rate and heavy pollution generally exist in the front wet process, and meanwhile, the method is difficult to be applied to certain vanadium slag with high CaO and FeO content.
Disclosure of Invention
The invention aims to provide a method for producing a silicon-vanadium alloy by smelting vanadium-rich slag and the silicon-vanadium alloy aiming at the defects of the prior art.
On the one hand, the method for smelting and producing the silicon-vanadium alloy by the vanadium-rich slag comprises the following steps: (1) adding vanadium-rich slag, a siliceous reducing agent and a slag former into an electric furnace according to the mass ratio of (35.86-51.08) to (5.92-22.07) to (33.58-56.25) for smelting, and reducing vanadium in the slag into molten iron; (2) mixing the slag and the iron, casting by an ingot mould, crushing and finishing to obtain the silicon-vanadium alloy.
The method for producing the silicon-vanadium alloy by smelting the vanadium-rich slag, wherein V in the vanadium-rich slag2O5The content is 14-20%.
According to the method for producing the silicon-vanadium alloy by smelting the vanadium-rich slag, the silicon reducing agent is ferrosilicon and/or metallic silicon.
According to the method for producing the silicon-vanadium alloy by smelting the vanadium-rich slag, the slagging agent is lime and/or limestone.
According to the method for producing the silicon-vanadium alloy by smelting the vanadium-rich slag, the mass ratio of the vanadium-rich slag to the silicon reducing agent to the slag former is (40-47): (14-17): (38-44).
According to the method for producing the silicon-vanadium alloy by smelting the vanadium-rich slag, the electric furnace is a tilting refining electric furnace.
According to the method for producing the silicon-vanadium alloy by smelting the vanadium-rich slag, the smelting furnace temperature is 1650-1700 ℃.
According to the method for producing the silicon-vanadium alloy by smelting the vanadium-rich slag, the siliceous reducing agent and the slagging agent are continuously added into an electric furnace for smelting, and the time interval for mixing out the slag iron is 2-3 hours.
On the other hand, the invention provides a silicon-vanadium alloy which is obtained by the method for producing the silicon-vanadium alloy by smelting the vanadium-rich slag. The silicon-vanadium alloy comprises Fe 54.48-71.73%, Si 19.66-21.15%, V5.63-20.34% and C less than 0.50%.
The technical scheme of the invention has the following beneficial effects:
according to the method for producing the silicon-vanadium alloy by smelting the vanadium-rich slag, the vanadium resource in the vanadium slag is directly smelted into the silicon-vanadium alloy required by the downstream steel industry in a pyrometallurgical mode, so that an intermediate wet process is omitted, the process is simple, the operation is convenient, the cost is greatly reduced, the method is not limited by the contents of CaO and FeO in the vanadium slag raw materials, and the method has remarkable economic benefit and popularization significance.
Detailed Description
The present invention will be described in detail with reference to the following embodiments in order to fully understand the objects, features and effects of the invention. The process of the present invention employs conventional methods or apparatus in the art, except as described below. The following noun terms have meanings commonly understood by those skilled in the art unless otherwise specified.
Specifically, the method for smelting and producing the silicon-vanadium alloy by using the vanadium-rich slag comprises the following steps:
(1) adding vanadium-rich slag, a siliceous reducing agent and a slag former into an electric furnace according to the mass ratio of (35.86-51.08) to (5.92-22.07) to (33.58-56.25) for smelting, and reducing vanadium in the slag into molten iron;
(2) mixing the slag and the iron, casting by an ingot mould, crushing and finishing to obtain the silicon-vanadium alloy.
Compared with the existing mainstream process for smelting and producing silicon-vanadium alloy (namely, preparing vanadium sheets by a wet process consisting of the working procedures of salt adding roasting-leaching-vanadium precipitation-melting and the like, and then preparing ferrovanadium, ferrovanadium nitride, vanadium-nitrogen alloy, silicon-vanadium alloy and the like needed by steel-making alloying by utilizing the vanadium sheets through a series of pyrogenic process working procedures), the method for smelting and producing silicon-vanadium alloy by using vanadium-rich slag has the advantages of simple process flow, high production efficiency, low cost and the like.
In some preferred embodiments, the method for smelting and producing the silicon-vanadium alloy by using the vanadium-rich slag comprises the following steps:
(1) adding vanadium-rich slag, a siliceous reducing agent and a slag former into an electric furnace according to the mass ratio of (35.86-51.08) to (5.92-22.07) to (33.58-56.25) for smelting, and reducing vanadium in the slag into molten iron.
The vanadium-rich slag is prepared by smelting vanadium-titanium magnetite in a blast furnace to obtain molten iron, and then extracting vanadium and enriching the vanadium by blowing oxygen in a converter, wherein the vanadium-rich slag is known in the industry, and the slag has complex specific components and content and large fluctuation due to factors such as raw material components, smelting equipment, process conditions, operation system and the like of various plants, but the vanadium slag contains FeO, CaO and SiO2，MgO，Al2O3，V2O5These several components, among which the most important V2O5The content is mainly in the range of 14-20%.
The molten iron actually refers to a silicon-vanadium alloy liquid containing iron components, which is obtained by reacting vanadium-rich slag with a silicon reducing agent, and the liquid is also called as "molten iron" in the field of ferroalloy, and corresponds to "slag" finally obtained in smelting.
The siliceous reducing agent is ferrosilicon and/or metallic silicon. Preferably, the siliceous reducing agent is metal silicon, and the vanadium content of the silicon-vanadium alloy obtained by smelting is higher. Part of the siliceous reducing agent is used for reducing V in the vanadium-rich slag2O5Is reduced to monoVanadium, itself oxidized to SiO2Enters the slag and the other part is combined with vanadium to form silicon-vanadium alloy.
Optionally, the ferrosilicon is ferrosilicon containing silicon in an amount of 45% and 75%.
The slagging agent is lime and/or limestone, and provides proper slag alkalinity for tilting electric furnace smelting, so that the smooth production is facilitated.
In the invention, when the mass ratio of the vanadium-rich slag is less than the minimum value, the vanadium content of the obtained silicon-vanadium alloy is too low to be economical, and meanwhile, the smelting of alloy steel is not limited; and when the mass ratio of the vanadium-rich slag is higher than the maximum value, the melting point of one slag is increased and becomes viscous, so that the alloy is overheated, the vanadium loss is increased, meanwhile, the impurity of the product P, S is too high, the product quality is poor, and the production burden is increased for the subsequent impurity removal of steel making.
When the mass ratio of the siliceous reducing agent is less than the minimum value, the furnace burden is seriously sintered, the furnace mouth is non-uniform in ventilation, furnace slag is sticky and difficult to discharge, and simultaneously vanadium is not fully reduced into molten iron, so that the waste of vanadium resources is caused; when the mass ratio is higher than the maximum value, the current distribution in the furnace is destroyed if the mass ratio is heavy, the deep insertion and reduction of the electrode are influenced to be smoothly carried out, the silicon content in the silicon-vanadium alloy obtained by smelting is overhigh if the mass ratio is light, silicon resource waste is caused, the slagging speed is reduced when the alloy is used for subsequent steelmaking, and meanwhile, the consumption of slag and the heat loss are increased, so that the corrosion to a furnace lining is aggravated.
The addition amount of the slag former is adjusted by alkalinity, when the mass ratio of the slag former is less than the minimum value, the alkalinity of the slag is insufficient during smelting, so that the vanadium content in the slag is high, the recovery rate of the vanadium is low, and when the mass ratio of the slag former is higher than the maximum value, the melting point of the slag is increased, the fluidity is poor, so that the alloy is overheated, and the vanadium loss is increased.
Preferably, when the mass ratio of the vanadium-rich slag to the siliceous reducing agent to the slagging constituent is (40-47): (14-17): (38-44), the silicon-vanadium alloy obtained by smelting has better physical and chemical properties.
Wherein the electric furnace is a tilting refining electric furnace. In some other embodiments, the electric furnace may be other types of refining furnaces, and the invention is not limited thereto.
Wherein the furnace temperature for smelting is 1650-1700 ℃.
(2) Mixing the slag and the iron, casting by an ingot mould, crushing and finishing to obtain the silicon-vanadium alloy.
Preferably, the vanadium-rich slag, the siliceous reducing agent and the slagging constituent are continuously added into an electric furnace for smelting, and the time interval for mixing out the slag iron is 2-3 hours, so that the production efficiency is improved.
According to the method for producing the silicon-vanadium alloy by smelting the vanadium-rich slag, the vanadium resource in the vanadium slag is directly smelted into the silicon-vanadium alloy required by the downstream steel industry in a pyrometallurgical mode, so that an intermediate wet process is omitted, the process is simple, the operation is convenient, and the cost is greatly reduced.
On the other hand, the invention provides a silicon-vanadium alloy which is obtained by the method for producing the silicon-vanadium alloy by smelting the vanadium-rich slag.
The silicon-vanadium alloy comprises Fe 54.48-71.73%, Si 19.66-21.15%, V5.63-20.34%, C less than 0.50% and other elements.
Examples
The invention is further illustrated by the following examples, which are not intended to limit the scope of the invention. Experimental procedures without specifying specific conditions in the following examples were carried out according to conventional methods and conditions. The starting materials used in the following examples are all conventionally commercially available.
Example 1
Respectively weighing 45.27 parts of vanadium-rich slag, 11.27 parts of 75% ferrosilicon and 43.46 parts of quicklime (by mass), conveying the materials to a bin at the top of an electric furnace by an adhesive tape machine, adding the materials into a tilting refining furnace through a material pipe, conducting submerged arc smelting by electrifying, and carrying out silicothermic reduction at the furnace temperature of 1650-1700 ℃. And opening the tapping hole every 2.5 hours, allowing molten iron to flow into the ladle, overflowing slag to the slag runner, and flowing into the slag flushing tank along the slag runner for water quenching treatment. The ladle is hoisted to a casting span by a travelling crane to carry out ingot mould casting, and then is transported to a finished product span by an ingot mould trolley to carry out crushing and finishing, so that the qualified silicon-vanadium alloy is obtained, and the main components of the silicon-vanadium alloy comprise Fe 64.89%, Si19.94%, V10.95% and C less than 0.50%.
Example 2
40.39 parts of vanadium-rich slag, 16.80 parts of 45% ferrosilicon and 42.81 parts of limestone (by mass) are respectively weighed, conveyed to a bin at the top of an electric furnace by an adhesive tape machine, added into a tilting refining furnace through a material pipe, electrified submerged arc smelting is carried out, and silicothermic reduction is carried out at the furnace temperature of 1650-1700 ℃. And opening a tapping hole every 3 hours, allowing molten iron to flow into a ladle, overflowing slag to a slag runner, and flowing into a slag flushing tank along the slag runner for water quenching treatment. The ladle is hoisted to a casting span by a travelling crane to carry out ingot mould casting, and then is transported to a finished product span by an ingot mould trolley to carry out crushing and finishing, so that the qualified silicon-vanadium alloy is obtained, and the main components of the silicon-vanadium alloy comprise Fe 68.36%, Si 20.01%, V8.33% and C less than 0.50%.
Example 3
46.79 parts of vanadium-rich slag, 11.93 parts of 45% ferrosilicon, 2.71 parts of metallic silicon and 38.61 parts of quicklime (by mass) are respectively weighed, conveyed to a bin at the top of an electric furnace by an adhesive tape machine, added into a tilting refining furnace through a material pipe, electrified and submerged arc smelted, and subjected to silicothermic reduction at the furnace temperature of 1650-1700 ℃. And opening a tapping hole every 3 hours, allowing molten iron to flow into a ladle, overflowing slag to a slag runner, and flowing into a slag flushing tank along the slag runner for water quenching treatment. The foundry ladle is hoisted to a casting span by a crane for ingot mold casting, and then is transported to a finished product span by an ingot mold trolley for crushing and finishing to obtain the qualified silicon-vanadium alloy, wherein the main components of the silicon-vanadium alloy are Fe65.02%, Si 19.89%, V11.26% and C less than 0.50%.
Example 4
44.72 parts of vanadium-rich slag, 20.17 parts of 45% ferrosilicon and 35.11 parts of lime (by mass) are respectively weighed, conveyed to a bin at the top of an electric furnace by an adhesive tape machine, added into a tilting refining furnace through a material pipe, electrified submerged arc smelting is carried out, and silicothermic reduction is carried out at the furnace temperature of 1650-1700 ℃. And opening the tapping hole every 2.5 hours, allowing molten iron to flow into the ladle, overflowing slag to the slag runner, and flowing into the slag flushing tank along the slag runner for water quenching treatment. The ladle is hoisted to a casting span by a travelling crane to carry out ingot mould casting, and then is transported to a finished product span by an ingot mould trolley to carry out crushing and finishing, so that the qualified silicon-vanadium alloy is obtained, and the main components of the silicon-vanadium alloy comprise 69.78% of Fe, 19.92% of Si, 7.10% of V and less than 0.50% of C.
Example 5
Respectively weighing 38.76 parts of vanadium-rich slag, 6.98 parts of metallic silicon and 54.26 parts of limestone (by mass), conveying the materials to a bin at the top of an electric furnace by a belt conveyor, adding the materials into a tilting refining furnace through a material pipe, electrifying submerged arc smelting, and carrying out silicothermic reduction at the furnace temperature of 1650-1700 ℃. And opening a tapping hole every 3 hours, allowing molten iron to flow into a ladle, overflowing slag to a slag runner, and flowing into a slag flushing tank along the slag runner for water quenching treatment. The ladle is hoisted to a casting span by a crane for ingot mold casting, and then is transported to a finished product span by an ingot mold trolley for crushing and finishing to obtain the qualified silicon-vanadium alloy, wherein the main components of the silicon-vanadium alloy comprise Fe 56.37%, Si 20.14%, V20.32% and C less than 0.50%.
The present invention has been disclosed in the foregoing in terms of preferred embodiments, but it will be understood by those skilled in the art that these embodiments are merely illustrative of the present invention and should not be construed as limiting the scope of the present invention. It should be noted that all changes and substitutions equivalent to those of the embodiments are intended to be included within the scope of the claims of the present invention. Therefore, the protection scope of the present invention should be subject to the scope defined in the claims.
Claims (10)
1. A method for producing silicon-vanadium alloy by smelting vanadium-rich slag is characterized by comprising the following steps:
(1) adding vanadium-rich slag, a siliceous reducing agent and a slag former into an electric furnace according to the mass ratio of (35.86-51.08) to (5.92-22.07) to (33.58-56.25) for smelting, and reducing vanadium in the slag into molten iron;
(2) mixing the slag and the iron, casting by an ingot mould, crushing and finishing to obtain the silicon-vanadium alloy.
2. The method for smelting and producing the silicon-vanadium alloy by using the vanadium-rich slag according to claim 1, wherein V in the vanadium-rich slag2O5The content is 14-20%.
3. The method for smelting and producing the silicon-vanadium alloy by using the vanadium-rich slag according to claim 1, wherein the siliceous reducing agent is ferrosilicon and/or metallic silicon.
4. The method for smelting and producing the silicon-vanadium alloy by the vanadium-rich slag according to claim 1, wherein the slagging agent is lime and/or limestone.
5. The method for producing the silicon-vanadium alloy by smelting the vanadium-rich slag according to claim 1, wherein the mass ratio of the vanadium-rich slag to the siliceous reducing agent to the slag former is (40-47): (14-17): (38-44).
6. The method for producing the silicon-vanadium alloy through smelting of the vanadium-rich slag according to any one of claims 1 to 5, wherein the electric furnace is a tilting refining electric furnace.
7. The method for producing the silicon-vanadium alloy by smelting the vanadium-rich slag according to claim 6, wherein the furnace temperature of the smelting is 1650-1700 ℃.
8. The method for producing the silicon-vanadium alloy by smelting the vanadium-rich slag according to claim 1, wherein the vanadium-rich slag, the siliceous reducing agent and the slag former are continuously added into an electric furnace for smelting, and the time interval for mixing out the slag iron is 2-3 hours.
9. The silicon-vanadium alloy is characterized by being obtained by the method for producing the silicon-vanadium alloy by smelting the vanadium-rich slag according to any one of claims 1 to 8.
10. The silicon vanadium alloy according to claim 9, wherein the silicon vanadium alloy comprises Fe 54.48-71.73%, Si 19.66-21.15%, V5.63-20.34%, C < 0.50%.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073254A (en) * | 2021-03-26 | 2021-07-06 | 攀枝花学院 | Silicon-vanadium alloy prepared from low-vanadium corundum slag and preparation method thereof |
| CN114293043A (en) * | 2021-11-19 | 2022-04-08 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for smelting ferrovanadium alloy by ferrosilicon |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353751A (en) * | 2008-08-29 | 2009-01-28 | 攀钢集团研究院有限公司 | Vanadium-silicon alloy and its preparation and application method |
-
2020
- 2020-03-10 CN CN202010162796.6A patent/CN111235349A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101353751A (en) * | 2008-08-29 | 2009-01-28 | 攀钢集团研究院有限公司 | Vanadium-silicon alloy and its preparation and application method |
Non-Patent Citations (2)
| Title |
|---|
| 吕韬等: "转炉含钒钢渣冶炼钒系合金新流程工艺思路", 《铁合金》 * |
| 王邦杰等: "《实用模具材料手册》", 30 June 2014 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113073254A (en) * | 2021-03-26 | 2021-07-06 | 攀枝花学院 | Silicon-vanadium alloy prepared from low-vanadium corundum slag and preparation method thereof |
| CN114293043A (en) * | 2021-11-19 | 2022-04-08 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for smelting ferrovanadium alloy by ferrosilicon |
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