CN111041222A - Method for extracting vanadium from low-grade vanadium waste slag for submerged arc furnace - Google Patents

Method for extracting vanadium from low-grade vanadium waste slag for submerged arc furnace Download PDF

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CN111041222A
CN111041222A CN201911419121.9A CN201911419121A CN111041222A CN 111041222 A CN111041222 A CN 111041222A CN 201911419121 A CN201911419121 A CN 201911419121A CN 111041222 A CN111041222 A CN 111041222A
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vanadium
low
slag
grade
coke
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庹开正
周泽宇
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Yongping Yongtai Industrial Waste Co Ltd
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Yongping Yongtai Industrial Waste Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/04Working-up slag
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B34/00Obtaining refractory metals
    • C22B34/20Obtaining niobium, tantalum or vanadium
    • C22B34/22Obtaining vanadium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B4/00Electrothermal treatment of ores or metallurgical products for obtaining metals or alloys
    • C22B4/06Alloys
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22BPRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B7/00Working up raw materials other than ores, e.g. scrap, to produce non-ferrous metals and compounds thereof; Methods of a general interest or applied to the winning of more than two metals
    • C22B7/001Dry processes
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00Technologies related to metal processing
    • Y02P10/20Recycling

Abstract

The invention discloses a method for extracting vanadium from low-grade vanadium waste residues for a submerged arc furnace, which comprises the steps of putting the low-grade vanadium waste residues and ingredients into the submerged arc furnace for melting, wherein the melting temperature is 1600-. According to the invention, a certain amount of semi-coke and silicon slag are added into the low-grade vanadium waste slag for producing the silicon-vanadium alloy by melting and reducing the low-grade vanadium waste slag, vanadium in the low-grade vanadium waste slag is extracted in the form of the silicon-vanadium alloy, the recovery effect of the vanadium is outstanding through the mutual synergistic effect of the semi-coke and the silicon slag, and the recovery rate of the vanadium is about 95%.

Description

Method for extracting vanadium from low-grade vanadium waste slag for submerged arc furnace
Technical Field
The invention relates to the technical field of vanadium-containing waste residue treatment, in particular to a method for refining vanadium from low-grade vanadium waste residue for a submerged arc furnace.
Background
The vanadium-containing waste residue is industrial waste residue, contains recyclable components and has high recycling value. Silicon-vanadium alloy, high vanadium slag, ferrovanadium and high-purity pig iron can be produced by refining vanadium-containing waste slag.
The low-grade vanadium slag is vanadium-containing waste slag generated in converter steelmaking, is high-calcium slag, does not separate slag iron, and has high alkalinity and no arcing. The low-grade vanadium waste residue comprises the following components in percentage by weight:
vanadium pentoxide (V)2O5) 1.8-3.5%, iron oxide (FeO) 17-23%, calcium oxide (CaO) 37%, silicon dioxide (SiO)2) 13-14%, magnesium oxide (MgO) 10%, aluminium oxide (Al)2O3) 3%, phosphorus (P) 0.5%, and the balance other impurities.
At present, no relevant technology for refining vanadium from low-grade vanadium waste residues exists, the significance of researching the refining of vanadium from low-grade vanadium waste residues is important, the treatment of the low-grade vanadium waste residues can realize the recycling of wastes, can avoid environmental pollution, has huge economic benefits and commercial prospects, and also conforms to the sustainable development strategy.
Disclosure of Invention
The invention aims to provide a method for extracting vanadium from low-grade vanadium waste residues for a submerged arc furnace, wherein semi-coke and silicon slag are added into the low-grade vanadium waste residues to extract vanadium, and the recovery rate of vanadium is about 95%.
The invention is realized by the following technical scheme:
a method for extracting vanadium from low-grade vanadium waste slag for a submerged arc furnace comprises the steps of placing the low-grade vanadium waste slag and ingredients in the submerged arc furnace for melting, wherein the melting temperature is 1600-1650 ℃, and the ingredients comprise semi-coke and silicon slag.
Because the low-grade vanadium waste residue has the characteristics of high calcium, no iron slag and high alkalinity without arcing, no relevant mature technology for extracting vanadium from the low-grade vanadium waste residue exists at present, but the low-grade vanadium waste residue contains recyclable components and has high recycling value. The method has great significance for researching the extraction of vanadium from low-grade vanadium waste residue by extracting the vanadium-containing waste residue, wherein silicon-vanadium alloy, high-vanadium slag, ferrovanadium and high-purity pig iron can be produced.
The semi-coke and the silicon slag are both commercially available products.
In the using process, after a certain amount of semi-coke and silicon slag are added into the low-grade vanadium slag, the semi-coke and the silicon slag are uniformly mixed and put into a submerged arc furnace for refining treatment, the refining temperature is 1600-.
The semi-coke has the function of reducing vanadium pentoxide in the low-grade vanadium waste residue into a simple substance, the silicon slag is used for producing silicon-vanadium alloy, vanadium in the low-grade vanadium waste residue is extracted in the form of the silicon-vanadium alloy, the silicon slag comprises silicon dioxide, simple substance silicon and other impurities, the silicon dioxide can reduce the alkalinity of the slag (the low-grade vanadium waste residue) and improve the fluidity of the slag, the heat release process is favorable for fully melting and reducing the low-grade vanadium waste residue, so that vanadium is fully reduced, part of the simple substance silicon in the silicon slag participates in reduction, and the other part of the simple substance silicon enters molten iron as the simple substance silicon to produce the silicon-vanadium alloy.
The applicant finds out through experiments that the silicon slag has a remarkable effect in smelting and reducing the low-grade vanadium waste slag just because of the complex components of the silicon slag, and the effect is obviously better than that of adding simple substance silicon.
According to the invention, a certain amount of semi-coke and silicon slag are added into the low-grade vanadium waste slag for producing the silicon-vanadium alloy by melting and reducing the low-grade vanadium waste slag, vanadium in the low-grade vanadium waste slag is extracted in the form of the silicon-vanadium alloy, the recovery effect of the vanadium is outstanding through the mutual synergistic effect of the semi-coke and the silicon slag, and the recovery rate of the vanadium is about 95%.
Further, 70-90Kg of semi-coke and 300Kg of silicon slag of 250-one are added in each ton of low-grade vanadium waste slag by weight.
Through experiments, the applicant finds that the addition of the semi-coke and the silicon slag according to the proportion not only can realize high recovery rate of vanadium, but also is beneficial to saving the semi-coke and the silicon slag.
Furthermore, 90Kg of semi coke and 300Kg of silica slag are added to each ton of low grade vanadium slag by weight.
Further, the low-grade vanadium waste residue comprises the following components in percentage by weight:
V2O51.8-3.5%,FeO 22-23%,CaO 37%,SiO213-14%,MgO 10%,Al2O33%, P0.5%, and the balance of other impurities.
Further, the low-grade vanadium waste residue and the ingredients are fully and uniformly mixed and then put into a submerged arc furnace for melting.
The operation is favorable for ensuring that the ingredients are uniformly dispersed in the low-grade vanadium waste slag and is favorable for melting and refining vanadium.
Further, the specific steps of fully mixing the low-grade vanadium waste residue and the ingredients are as follows:
1) respectively crushing and sieving the semi-coke and the silicon slag;
2) stirring and mixing the crushed and sieved semi-coke and the silicon slag uniformly;
3) and adding the mixed semi-coke and silicon slag into the low-grade vanadium waste slag, and stirring and mixing uniformly again.
The operation is beneficial to fully and uniformly mixing the low-grade vanadium waste residue and the ingredients.
Further, the sieve is 20-100 meshes.
The semi-coke and the silicon slag with smaller particles are beneficial to being uniformly distributed in the low-grade vanadium waste slag, and the recovery efficiency is beneficial to being improved.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. according to the invention, a certain amount of semi-coke and silicon slag are added into the low-grade vanadium waste slag for producing the silicon-vanadium alloy by melting and reducing the low-grade vanadium waste slag, vanadium in the low-grade vanadium waste slag is extracted in the form of the silicon-vanadium alloy, the recovery effect of the vanadium is outstanding through the mutual synergistic effect of the semi-coke and the silicon slag, and the recovery rate of the vanadium is about 95%.
2. The semi-coke and the silicon slag are sold in the market, the raw materials are easy to obtain and low in price, so that the cost for extracting vanadium from low-grade vanadium waste slag is low, and the industrial popularization is easy
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to examples, and the exemplary embodiments and descriptions thereof are only used for explaining the present invention and are not used as limitations of the present invention.
Example 1:
a method for extracting vanadium from low-grade vanadium waste slag for a submerged arc furnace comprises the steps of crushing semi coke and silicon slag respectively, and screening by a 50-mesh sieve; stirring and mixing the crushed and sieved semi-coke and silicon slag uniformly; adding the mixed semi-coke and silicon slag into low-grade vanadium waste slag, uniformly mixing, and then putting into a submerged arc furnace for melting, wherein the melting temperature is 1600 ℃, by weight, 70Kg of semi-coke and 250Kg of silicon slag are added into each ton of low-grade vanadium waste slag, and the low-grade vanadium waste slag comprises the following components in percentage by weight:
V2O53.5%,FeO 22%,CaO 37%,SiO213%,MgO 10%,Al2O33%, P0.5%, and the balance of other impurities.
According to the embodiment, the ingredients are added into the low-grade vanadium waste residue to refine vanadium (3.3 tons of low-grade vanadium waste residue are used in the refining process), the content of vanadium in the molten iron discharged from the lower outlet of the submerged arc furnace is about (V% is 6.08%), and the recovery rate of vanadium is about 94%.
Calculated according to the following formula:
v in molten iron2O5The recovery rate of vanadium is 0.56 percent of the weight of the grade vanadium waste residue, and the recovery rate of vanadium is vanadium/(V) in molten iron2O5Content 0.56% by weight of the low-grade vanadium slag), wherein V is in the medium vanadium of molten iron and V is in the low-grade vanadium slag2O5The content can be obtained by testing.
For example: in this example, the vanadium content in the molten iron is about 6.08%, the weight of the low-grade vanadium slag is 3.3 tons, and the V content in the low-grade vanadium slag2O5The content was 3.5%, and the recovery rate of vanadium became 0.68/(3.5 × 3.3 × 0.56) — 94%.
Example 2:
a method for extracting vanadium from low-grade vanadium waste slag for a submerged arc furnace comprises the steps of crushing semi-coke and silicon slag respectively, and screening by a 20-mesh sieve; stirring and mixing the crushed and sieved semi-coke and silicon slag uniformly; adding the mixed semi-coke and silicon slag into low-grade vanadium waste slag, uniformly mixing, and then putting into a submerged arc furnace for melting, wherein the melting temperature is 1650 ℃, and according to the weight of the ingredients, 90Kg of semi-coke and 300Kg of silicon slag are added into each ton of low-grade vanadium waste slag; the low-grade vanadium waste residue comprises the following components in percentage by weight:
V2O51.8%,FeO 23%,CaO 37%,SiO214%,MgO 10%,Al2O33%, P0.5%, and the balance of other impurities.
According to the embodiment, the ingredients are added into the low-grade vanadium waste residue to refine vanadium (3.3 tons of low-grade vanadium waste residue are used in the refining process), the content of vanadium in the molten iron discharged from the lower outlet of the submerged arc furnace is about 3.35%, and the recovery rate of vanadium is about 95%.
Example 3:
a method for extracting vanadium from low-grade vanadium waste slag for a submerged arc furnace comprises the steps of crushing semi coke and silicon slag respectively, and sieving by a 80-mesh sieve; stirring and mixing the crushed and sieved semi-coke and silicon slag uniformly; adding the mixed semi-coke and silicon slag into low-grade vanadium waste slag, uniformly mixing, and then putting into a submerged arc furnace for melting, wherein the melting temperature is 1600 ℃, and according to the weight of the ingredients, 80Kg of semi-coke and 270Kg of silicon slag are added into each ton of low-grade vanadium waste slag; the low-grade vanadium waste residue comprises the following components in percentage by weight:
V2O53.0%,FeO 23%,CaO 37%,SiO213%,MgO 10%,Al2O33%, P0.5%, and the balance of other impurities.
According to the embodiment, the ingredients are added into the low-grade vanadium waste residue to refine vanadium (3.3 tons of low-grade vanadium waste residue are used in the refining process), the content of vanadium in the molten iron discharged from the lower outlet of the submerged arc furnace is about 5.58%, and the recovery rate of vanadium is about 95%.
Example 4:
a method for extracting vanadium from low-grade vanadium waste slag for a submerged arc furnace comprises the steps of crushing semi coke and silicon slag respectively, and screening by a 50-mesh sieve; stirring and mixing the crushed and sieved semi-coke and silicon slag uniformly; adding the mixed semi-coke and silicon slag into low-grade vanadium waste slag, uniformly mixing, and then putting into a submerged arc furnace for melting, wherein the melting temperature is 1650 ℃, and according to the weight of the ingredients, 70Kg of semi-coke and 300Kg of silicon slag are added into each ton of low-grade vanadium waste slag; the low-grade vanadium waste residue comprises the following components in percentage by weight:
V2O52.5%,FeO 22%,CaO 37%,SiO214%,MgO 10%,Al2O33%, P0.5%, and the balance of other impurities.
According to the embodiment, the ingredients are added into the low-grade vanadium waste residue to refine vanadium (3.3 tons of low-grade vanadium waste residue are used in the refining process), the content of vanadium in the molten iron discharged from the lower outlet of the submerged arc furnace is about 4.65%, and the recovery rate of vanadium is about 95%.
Example 5:
a method for extracting vanadium from low-grade vanadium waste slag for a submerged arc furnace comprises the steps of crushing semi coke and silicon slag respectively, and screening by a 50-mesh sieve; stirring and mixing the crushed and sieved semi-coke and silicon slag uniformly; adding the mixed semi-coke and silicon slag into low-grade vanadium waste slag, uniformly mixing, and then putting into a submerged arc furnace for melting, wherein the melting temperature is 1600 ℃, and according to the weight of the ingredients, 90Kg of semi-coke and 250Kg of silicon slag are added into each ton of low-grade vanadium waste slag; the low-grade vanadium waste residue comprises the following components in percentage by weight:
V2O53.0%,FeO 22%,CaO 37%,SiO214%,MgO 10%,Al2O33%, P0.5%, and the balance of other impurities.
According to the embodiment, the ingredients are added into the low-grade vanadium waste residue to refine vanadium (3.3 tons of low-grade vanadium waste residue are used in the refining process), the content of vanadium in the molten iron discharged from the lower outlet of the submerged arc furnace is about 5.47%, and the recovery rate of vanadium is about 94%.
Example 6:
a method for extracting vanadium from low-grade vanadium waste slag for a submerged arc furnace comprises the steps of crushing semi coke and silicon slag respectively, and screening by a 50-mesh sieve; stirring and mixing the crushed and sieved semi-coke and silicon slag uniformly; adding the mixed semi-coke and silicon slag into low-grade vanadium waste slag, uniformly mixing, and then putting into a submerged arc furnace for melting, wherein the melting temperature is 1600 ℃, and according to the weight of the ingredients, 80Kg of semi-coke and 250Kg of silicon slag are added into each ton of low-grade vanadium waste slag; the low-grade vanadium waste residue comprises the following components in percentage by weight:
V2O52.2%,FeO 23%,CaO 37%,SiO214%,MgO 10%,Al2O33%, P0.5%, and the balance of other impurities.
According to the embodiment, the ingredients are added into the low-grade vanadium waste residue to refine vanadium (3.3 tons of low-grade vanadium waste residue are used in the refining process), the content of vanadium in the molten iron discharged from the lower outlet of the submerged arc furnace is about 4.01%, and the recovery rate of vanadium is about 93%.
Comparative example 1:
this comparative example is based on example 6, differing from the examples in that: 60Kg of semi-coke and 220Kg of silicon slag are added to each ton of low grade vanadium waste slag.
According to the proportion, the ingredients are added into the low-grade vanadium waste residue to refine vanadium (3.3 tons of low-grade vanadium waste residue are used in the refining process), the content of vanadium in the molten iron discharged from the lower outlet of the submerged arc furnace is about 3.88 percent, and the recovery rate of vanadium is about 90 percent.
Comparative example 2:
this comparative example is based on example 6, differing from the examples in that: 50Kg of semi-coke and 200Kg of silicon slag are added to each ton of low grade vanadium waste slag.
According to the proportion, the ingredients are added into the low-grade vanadium waste residue to refine vanadium (3.3 tons of low-grade vanadium waste residue are used in the refining process), the content of vanadium in the molten iron discharged from the lower outlet of the submerged arc furnace is about 3.66 percent, and the recovery rate of vanadium is about 85 percent.
Comparative example 3:
this comparative example is based on example 6, differing from the examples in that: 40Kg of semi-coke and 180Kg of silicon slag are added to each ton of low grade vanadium waste slag.
According to the proportion, the ingredients are added into the low-grade vanadium waste residue to refine vanadium (3.3 tons of low-grade vanadium waste residue are used in the refining process), the content of vanadium in the molten iron discharged from the lower outlet of the submerged arc furnace is about 3.02 percent, and the recovery rate of vanadium is about 71 percent.
Comparative example 4:
this comparative example is based on example 6, differing from the examples in that: 100Kg of semi-coke and 320Kg of silicon slag are added into each ton of low-grade vanadium waste slag.
According to the proportion, the ingredients are added into the low-grade vanadium waste residue to refine vanadium (3.3 tons of low-grade vanadium waste residue are used in the refining process), the content of vanadium in the molten iron discharged from the lower outlet of the submerged arc furnace is about 4.1 percent, and the recovery rate of vanadium is about 95.1 percent.
Comparative example 5:
this comparative example is based on example 6, differing from the examples in that: 60Kg of semi-coke and 320Kg of silicon slag are added to each ton of low-grade vanadium waste slag.
According to the proportion, the ingredients are added into the low-grade vanadium waste residue to refine vanadium (3.3 tons of low-grade vanadium waste residue are used in the refining process), the content of vanadium in the molten iron discharged from the lower outlet of the submerged arc furnace is about 4.05 percent, and the recovery rate of vanadium is about 94 percent.
Comparative example 6:
this comparative example is based on example 6, differing from the examples in that: 50Kg of semi-coke and 350Kg of silicon slag are added into each ton of low grade vanadium waste slag.
According to the proportion, the ingredients are added into the low-grade vanadium waste residue to refine vanadium (3.3 tons of low-grade vanadium waste residue are used in the refining process), the content of vanadium in the molten iron discharged from the lower outlet of the submerged arc furnace is about 4.01 percent, and the recovery rate of vanadium is about 93 percent.
Comparative example 7:
this comparative example is based on example 6, differing from the examples in that: 100Kg of semi-coke and 200Kg of silicon slag are added to each ton of low grade vanadium waste slag.
According to the comparative example, the ingredients are added into the low-grade vanadium waste residue to refine vanadium (3.3 tons of low-grade vanadium waste residue are used in the refining process), the content of vanadium in the molten iron discharged from the lower outlet of the submerged arc furnace is about 4.13 percent, and the recovery rate of vanadium is about 96 percent.
Comparative example 8:
this comparative example is based on example 6, differing from the examples in that: 80Kg of semi-coke and 150Kg of silicon slag are added to each ton of low grade vanadium waste slag.
According to the proportion, the ingredients are added into the low-grade vanadium waste residue to refine vanadium (3.3 tons of low-grade vanadium waste residue are used in the refining process), the content of vanadium in the molten iron discharged from the lower outlet of the submerged arc furnace is about 3.88 percent, and the recovery rate of vanadium is about 90 percent.
Comparative example 9:
this comparative example is based on example 6, differing from the examples in that: 80Kg of semi-coke and 250Kg of industrial silicon are added into each ton of low-grade vanadium waste residue.
According to the proportion, the ingredients are added into the low-grade vanadium waste residue to refine vanadium (3.3 tons of low-grade vanadium waste residue are used in the refining process), the content of vanadium in the molten iron discharged from the lower outlet of the submerged arc furnace is about 4.09%, and the recovery rate of vanadium is about 95%.
The process for refining vanadium from low-grade vanadium waste slag comprises the following steps:
adding semi-coke and silicon slag into low-grade vanadium slag according to a proportion, uniformly mixing, putting into a submerged arc furnace for refining treatment, wherein the refining temperature is 1600-minus 1650 ℃, after the low-grade vanadium slag is melted at a high temperature, vanadium pentoxide of the slag is completely refined into molten iron due to the interaction of the semi-coke and the silicon slag, the slag after vanadium extraction is discharged from the upper part of the submerged arc furnace, and vanadium-containing alloy is discharged from a lower outlet.
To sum up: the semi-coke and the silicon slag in the proportion are added into the low-grade vanadium waste slag to produce the silicon-vanadium alloy, the content of vanadium is 3.5-7.0 percent, and the recovery rate of vanadium is about 95 percent. When the addition amounts of the semi-coke and the silicon slag are less, the recovery rate of the vanadium is obviously reduced, when the addition amounts of the semi-coke and the silicon slag are more, the recovery rate of the vanadium cannot be obviously increased, the recovery rate and the economic cost of the vanadium are comprehensively considered, and the addition amounts of the semi-coke and the silicon slag are set in the range of the invention to be the optimal scheme.
The above-mentioned embodiments are intended to illustrate the objects, technical solutions and advantages of the present invention in further detail, and it should be understood that the above-mentioned embodiments are merely exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims (7)

1. The method for extracting vanadium from low-grade vanadium waste residues for the submerged arc furnace is characterized in that the low-grade vanadium waste residues and ingredients are placed in the submerged arc furnace to be melted, the melting temperature is 1600-1650 ℃, and the ingredients comprise semi-coke and silicon slag.
2. The method for extracting vanadium from low-grade vanadium slag used for ore-smelting furnaces as claimed in claim 1, wherein 70-90Kg of semi-coke and 300Kg of silicon slag are added per ton of low-grade vanadium slag.
3. The method for extracting vanadium from low-grade vanadium slag used for ore-smelting furnaces as claimed in claim 2, wherein 90Kg of semi-coke and 300Kg of silicon slag are added per ton of low-grade vanadium slag by weight.
4. The method for extracting vanadium from low-grade vanadium slag used for ore-smelting furnaces according to claim 2 or 3, wherein the low-grade vanadium slag comprises the following components in percentage by weight:
V2O51.8-3.5%,FeO 17-23%,CaO 37%,SiO213-14%,MgO 10%,Al2O33%, P0.5%, and the balance of other impurities.
5. The method for extracting vanadium from low-grade vanadium slag used for the submerged arc furnace according to claim 1, characterized in that the low-grade vanadium slag and the ingredients are fully and uniformly mixed and then put into the submerged arc furnace for melting.
6. The method for extracting vanadium from low-grade vanadium slag used for the submerged arc furnace according to claim 5, characterized in that the specific steps of fully mixing the low-grade vanadium slag and the ingredients are as follows:
1) respectively crushing and sieving the semi-coke and the silicon slag;
2) stirring and mixing the crushed and sieved semi-coke and the silicon slag uniformly;
3) and adding the mixed semi-coke and silicon slag into the low-grade vanadium waste slag, and stirring and mixing uniformly again.
7. The method for extracting vanadium from low-grade vanadium slag used for ore-smelting furnaces as claimed in claim 6, wherein the screening is performed by using 20-100 meshes.
CN201911419121.9A 2019-12-31 2019-12-31 Method for extracting vanadium from low-grade vanadium waste slag for submerged arc furnace Pending CN111041222A (en)

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CN1752237A (en) * 2005-10-24 2006-03-29 安徽工业大学 Method for enriching vanadium in vanadium containing steel slag
CN101353751A (en) * 2008-08-29 2009-01-28 攀钢集团研究院有限公司 Vanadium-silicon alloy, and preparation and application thereof
CN102251114A (en) * 2011-07-08 2011-11-23 甘肃锦世化工有限责任公司 Method for smelting chromium-containing cast iron by using vanadium-containing calcium slag
CN103484590A (en) * 2013-09-03 2014-01-01 攀钢集团攀枝花钢铁研究院有限公司 Method for smelting vanadium-rich pig iron from vanadium-containing steel slag
CN103614565A (en) * 2013-12-11 2014-03-05 凉山瑞京环保资源开发有限公司 Steel slag tailings vanadium extracting process
CN103866144A (en) * 2014-04-03 2014-06-18 武汉科技大学 Preparation method for vanadium-titanium-silicon-iron alloy

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Application publication date: 20200421