CN111961803A - Production process and method of industrial pure iron - Google Patents
Production process and method of industrial pure iron Download PDFInfo
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- CN111961803A CN111961803A CN202010936628.8A CN202010936628A CN111961803A CN 111961803 A CN111961803 A CN 111961803A CN 202010936628 A CN202010936628 A CN 202010936628A CN 111961803 A CN111961803 A CN 111961803A
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 83
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 40
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 17
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 50
- 239000010959 steel Substances 0.000 claims abstract description 50
- 239000008188 pellet Substances 0.000 claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 23
- GFNGCDBZVSLSFT-UHFFFAOYSA-N titanium vanadium Chemical compound [Ti].[V] GFNGCDBZVSLSFT-UHFFFAOYSA-N 0.000 claims abstract description 22
- 238000003723 Smelting Methods 0.000 claims abstract description 21
- 238000005261 decarburization Methods 0.000 claims abstract description 21
- 239000002893 slag Substances 0.000 claims abstract description 18
- 238000007670 refining Methods 0.000 claims abstract description 15
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 11
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 11
- MRHSJWPXCLEHNI-UHFFFAOYSA-N [Ti].[V].[Fe] Chemical compound [Ti].[V].[Fe] MRHSJWPXCLEHNI-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000011230 binding agent Substances 0.000 claims abstract description 7
- 239000003638 chemical reducing agent Substances 0.000 claims abstract description 7
- 239000012141 concentrate Substances 0.000 claims abstract description 7
- 238000002844 melting Methods 0.000 claims description 13
- 230000008018 melting Effects 0.000 claims description 13
- 238000010438 heat treatment Methods 0.000 claims description 12
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 238000007664 blowing Methods 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 238000006477 desulfuration reaction Methods 0.000 claims description 6
- 230000023556 desulfurization Effects 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 6
- 239000001301 oxygen Substances 0.000 claims description 6
- 238000000926 separation method Methods 0.000 claims description 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 3
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 3
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 claims description 3
- 239000010436 fluorite Substances 0.000 claims description 3
- -1 light burned Substances 0.000 claims description 3
- 239000004571 lime Substances 0.000 claims description 3
- 238000001465 metallisation Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 2
- 238000010309 melting process Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims description 2
- 238000005507 spraying Methods 0.000 claims description 2
- 239000000126 substance Substances 0.000 claims description 2
- 229910052717 sulfur Inorganic materials 0.000 claims description 2
- 230000003009 desulfurizing effect Effects 0.000 claims 1
- 238000005272 metallurgy Methods 0.000 abstract description 2
- 239000000243 solution Substances 0.000 description 5
- GNTDGMZSJNCJKK-UHFFFAOYSA-N divanadium pentaoxide Chemical compound O=[V](=O)O[V](=O)=O GNTDGMZSJNCJKK-UHFFFAOYSA-N 0.000 description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 238000009749 continuous casting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 238000009850 CAS-OB (composition adjustment by sealed argon bubbling with oxygen blowing) Methods 0.000 description 1
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000009489 vacuum treatment Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- 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
- C21C5/5264—Manufacture of alloyed steels including ferro-alloys
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/064—Dephosphorising; Desulfurising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/068—Decarburising
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/10—Handling in a vacuum
-
- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
本发明属于冶金技术领域，涉及一种工业纯铁生产工艺及方法，该生产工艺分为直接还原、电炉冶炼、炉外精炼和钢水成型四个步骤。钒钛铁精矿、粘结剂、还原剂等原料在直接还原装置内通过选择性还原得到钒钛金属化球团，钒钛金属化球团在电炉冶炼装置内先被加热熔化，通过控制熔分过程得到钒渣和熔分钢水，然后再经造渣冶炼实现熔分钢水的脱碳升温，得到高纯钢水；高纯钢水在炉外精炼装置内进行脱硫、真空脱碳处理，精炼后的合格钢水在钢水成型装置内经连铸和轧制成工业纯铁。本发明工艺流程短、在电炉冶炼熔化分离提钒的同时实现了铁资源的高附加值利用，整个工艺投资少，污染物排放少，降低了工业纯铁的生产成本。
The invention belongs to the technical field of metallurgy, and relates to an industrial pure iron production process and method. The production process is divided into four steps: direct reduction, electric furnace smelting, out-of-furnace refining and molten steel forming. The vanadium-titanium iron concentrate, binder, reducing agent and other raw materials are selectively reduced in the direct reduction device to obtain vanadium-titanium metallized pellets. The vanadium slag and molten molten steel are obtained in a separate process, and then the decarburization and temperature rise of the molten molten steel are realized by slag smelting to obtain high-purity molten steel; The qualified molten steel is continuously cast and rolled into industrial pure iron in the molten steel forming device. The invention has a short process flow, realizes high value-added utilization of iron resources while smelting, smelting, separating, and extracting vanadium in an electric furnace.
Description
技术领域technical field
本发明属于冶金技术领域，涉及一种工业纯铁生产工艺及方法。The invention belongs to the technical field of metallurgy, and relates to an industrial pure iron production process and method.
背景技术Background technique
工业纯铁是一种重要的钢铁基础材料，它是一种碳含量很低的铁合金，具有矫顽力低、导热和电磁性能良好、之地柔软、韧性大等优良性能。根据其用途主要分为电磁纯铁、原料纯铁和军工纯铁等三类。Industrial pure iron is an important basic steel material. It is an iron alloy with very low carbon content. It has excellent properties such as low coercivity, good thermal conductivity and electromagnetic properties, soft ground and high toughness. According to its use, it is mainly divided into three categories: electromagnetic pure iron, raw material pure iron and military pure iron.
传统转炉流程生产工业纯铁，采用铁水预处理+转炉炼钢+LF+RH真空处理+连铸的工艺来生产，其钢水纯净度能够满足工业纯铁生产要求。但是该流程以铁水为原料，工艺流程长，且铁水生产能耗高、不环保。The traditional converter process produces industrial pure iron, which is produced by the process of molten iron pretreatment + converter steelmaking + LF + RH vacuum treatment + continuous casting, and its molten steel purity can meet the requirements of industrial pure iron production. However, this process uses molten iron as a raw material, and the process flow is long, and the production of molten iron has high energy consumption and is not environmentally friendly.
发明内容SUMMARY OF THE INVENTION
有鉴于此，本发明的目的在于提供一种工业纯铁生产工艺及方法，该工艺流程短、在电炉冶炼熔化分离提钒的同时实现了铁资源的高附加值利用，整个工艺投资少，污染物排放少，降低了工业纯铁的生产成本。In view of this, the purpose of the present invention is to provide a kind of industrial pure iron production technology and method, this technological process is short, realizes the high value-added utilization of iron resources at the same time of electric furnace smelting, melting, separating and extracting vanadium, the whole process investment is less, pollution is less. It has less waste and reduces the production cost of industrial pure iron.
为达到上述目的，本发明提供如下技术方案：To achieve the above object, the present invention provides the following technical solutions:
一种工业纯铁生产工艺，包括以下步骤：A process for producing industrial pure iron, comprising the following steps:
S1：直接还原以钒钛铁精矿、粘结剂和还原剂为原料，通过选择性还原得到钒钛金属化球团，钒钛金属化球团热送至电炉冶炼车间；S1: Direct reduction Using vanadium-titanium iron concentrate, binder and reducing agent as raw materials, through selective reduction, vanadium-titanium metallized pellets are obtained, and the vanadium-titanium metallized pellets are thermally sent to the electric furnace smelting workshop;
S2：电炉冶炼以100％钒钛金属化球团为原料，冶炼操作分为熔化分离和脱碳升温两个阶段；熔化分离阶段通过电弧加热熔化钒钛金属化球团，根据炉内热平衡情况及输入功率，控制钒钛金属化球团加料速度、吹氧及喷碳操作，熔清后通过炉门出渣至渣罐内，得到钒渣和熔分钢水；脱碳升温阶段通过继续向炉内加入造渣料、供电及吹氧，实现熔分钢水的脱碳升温，得到高纯钢水；S2: Electric furnace smelting uses 100% vanadium-titanium metallized pellets as raw materials. The smelting operation is divided into two stages: melting and separation and decarburization and heating. In the melting and separation stage, the vanadium-titanium metallized pellets are melted by arc heating. Input power to control the feeding speed of vanadium-titanium metallized pellets, oxygen blowing and carbon spraying operations. After melting, the slag is discharged into the slag tank through the furnace door to obtain vanadium slag and molten molten steel; Add slag-forming material, power supply and oxygen blowing to realize decarburization and heating of molten molten steel, and obtain high-purity molten steel;
S3：炉外精炼以高纯钢水为原料，通过精炼脱硫和真空脱碳得到合格钢水；S3: Out-of-furnace refining uses high-purity molten steel as raw material, and obtains qualified molten steel through refining desulfurization and vacuum decarburization;
S4：钢水成型以合格钢水为原料，通过连铸和轧制成工业纯铁。S4: molten steel forming takes qualified molten steel as raw material, and makes industrial pure iron through continuous casting and rolling.
可选的，直接还原的选择性还原方式为竖炉、转底炉、隧道窑、回转窑、多层炉。Optionally, the selective reduction method of direct reduction is a shaft furnace, a rotary hearth furnace, a tunnel kiln, a rotary kiln, and a multi-layer furnace.
可选的，所述金属化球团具有85％以上的金属化率、不高于2.0％的碳含量。Optionally, the metallized pellets have a metallization rate of more than 85% and a carbon content of not more than 2.0%.
可选的，所述钒渣碱度为0.15～0.30，渣中五氧化二钒含量4～8％。Optionally, the basicity of the vanadium slag is 0.15-0.30, and the content of vanadium pentoxide in the slag is 4-8%.
可选的，所述熔分钢水C含量不高于0.20％，P含量不高于0.01％，S含量不高于0.03％，Fe不低于99.5％。Optionally, the C content of the molten molten steel is not higher than 0.20%, the P content is not higher than 0.01%, the S content is not higher than 0.03%, and the Fe content is not lower than 99.5%.
可选的，所述造渣料包括石灰、轻烧、萤石。Optionally, the slagging material includes lime, light calcined, and fluorite.
可选的，所述高纯钢水C含量不高于0.10％，P含量不高于0.005％，S含量不高于0.03％。Optionally, the C content of the high-purity molten steel is not higher than 0.10%, the P content is not higher than 0.005%, and the S content is not higher than 0.03%.
可选的，所述精炼脱硫的熔炼装置可以是钢包精炼炉或钢包吹氩站或CAS-OB。Optionally, the smelting device for refining and desulfurization may be a ladle refining furnace or a ladle argon blowing station or CAS-OB.
可选的，精炼脱硫后钢水中S含量不高于0.005％。Optionally, the S content in the molten steel after refining and desulfurization is not higher than 0.005%.
可选的，真空脱碳的熔炼装置为RH或VOD。Optionally, the smelting device for vacuum decarburization is RH or VOD.
可选的，所述真空脱碳后钢水中C含量不高于0.01％。Optionally, the C content in the molten steel after the vacuum decarburization is not higher than 0.01%.
可选的，工业纯铁化学成分组成及其质量百分含量为C<0.01％，P≤0.005％，S≤0.005％，余量为Fe和杂质。Optionally, the chemical composition and mass percentage of industrial pure iron are C<0.01%, P≤0.005%, S≤0.005%, and the balance is Fe and impurities.
一种工业纯铁生产方法，钒钛铁精矿、粘结剂和还原剂原料在直接还原装置内通过选择性还原得到钒钛金属化球团，钒钛金属化球团在电炉冶炼装置内先被加热熔化，通过控制熔分过程得到钒渣和熔分钢水，然后再经造渣冶炼实现熔分钢水的脱碳升温，得到高纯钢水；高纯钢水在炉外精炼装置内进行脱硫、真空脱碳处理，精炼后的合格钢水在钢水成型装置内经连铸和轧制成工业纯铁。A method for producing industrial pure iron. The vanadium-titanium iron concentrate, binder and reducing agent raw materials are selectively reduced in a direct reduction device to obtain vanadium-titanium metallized pellets, and the vanadium-titanium metallized pellets are first prepared in an electric furnace smelting device. It is heated and melted, and vanadium slag and molten molten steel are obtained by controlling the melting process, and then the decarburization and heating of the molten molten steel are realized by slag smelting to obtain high-purity molten steel; the high-purity molten steel is desulfurized and vacuum After decarburization treatment, the qualified molten steel after refining is continuously cast and rolled into industrial pure iron in the molten steel forming device.
本发明的有益效果在于：The beneficial effects of the present invention are:
本发明采用钒钛铁精矿、粘结剂、还原剂为原料，在直接还原装置内对原料进行选择性还原，在电炉冶炼装置内对钒钛金属化球团进行熔化分离和脱碳升温，在炉外精炼装置里进行精炼脱硫和真空脱碳，得到的合格钢水在钢水成型装置里经连铸和轧制成工业纯铁。与常规工业纯铁生产流程对比，该工艺生产流程短、在电炉冶炼熔化分离提钒的同时实现了铁资源的高附加值利用，整个工艺投资少，污染物排放少，降低了工业纯铁的生产成本。The present invention adopts vanadium-titanium iron concentrate, binder and reducing agent as raw materials, selectively reduces the raw materials in a direct reduction device, and performs melting, separation, decarburization and heating of vanadium-titanium metallized pellets in an electric furnace smelting device. Refining desulfurization and vacuum decarburization are carried out in the out-of-furnace refining device, and the obtained qualified molten steel is continuously cast and rolled into industrial pure iron in the molten steel forming device. Compared with the conventional industrial pure iron production process, this process has a short production process, and realizes high value-added utilization of iron resources while smelting, smelting, and separating vanadium in an electric furnace. Cost of production.
本发明的其他优点、目标和特征在某种程度上将在随后的说明书中进行阐述，并且在某种程度上，基于对下文的考察研究对本领域技术人员而言将是显而易见的，或者可以从本发明的实践中得到教导。本发明的目标和其他优点可以通过下面的说明书来实现和获得。Other advantages, objects, and features of the present invention will be set forth in the description that follows, and will be apparent to those skilled in the art based on a study of the following, to the extent that is taught in the practice of the present invention. The objectives and other advantages of the present invention may be realized and attained by the following description.
附图说明Description of drawings
为了使本发明的目的、技术方案和优点更加清楚，下面将结合附图对本发明作优选的详细描述，其中：In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be preferably described in detail below with reference to the accompanying drawings, wherein:
图1为本发明的工艺流程示意图。Fig. 1 is the process flow schematic diagram of the present invention.
具体实施方式Detailed ways
以下通过特定的具体实例说明本发明的实施方式，本领域技术人员可由本说明书所揭露的内容轻易地了解本发明的其他优点与功效。本发明还可以通过另外不同的具体实施方式加以实施或应用，本说明书中的各项细节也可以基于不同观点与应用，在没有背离本发明的精神下进行各种修饰或改变。需要说明的是，以下实施例中所提供的图示仅以示意方式说明本发明的基本构想，在不冲突的情况下，以下实施例及实施例中的特征可以相互组合。The embodiments of the present invention are described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the drawings provided in the following embodiments are only used to illustrate the basic idea of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.
其中，附图仅用于示例性说明，表示的仅是示意图，而非实物图，不能理解为对本发明的限制；为了更好地说明本发明的实施例，附图某些部件会有省略、放大或缩小，并不代表实际产品的尺寸；对本领域技术人员来说，附图中某些公知结构及其说明可能省略是可以理解的。Among them, the accompanying drawings are only used for exemplary description, and represent only schematic diagrams, not physical drawings, and should not be construed as limitations of the present invention; in order to better illustrate the embodiments of the present invention, some parts of the accompanying drawings will be omitted, The enlargement or reduction does not represent the size of the actual product; it is understandable to those skilled in the art that some well-known structures and their descriptions in the accompanying drawings may be omitted.
本发明实施例的附图中相同或相似的标号对应相同或相似的部件；在本发明的描述中，需要理解的是，若有术语“上”、“下”、“左”、“右”、“前”、“后”等指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本发明和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此附图中描述位置关系的用语仅用于示例性说明，不能理解为对本发明的限制，对于本领域的普通技术人员而言，可以根据具体情况理解上述术语的具体含义。The same or similar numbers in the drawings of the embodiments of the present invention correspond to the same or similar components; in the description of the present invention, it should be understood that if there are terms “upper”, “lower”, “left” and “right” , "front", "rear" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated device or element must be It has a specific orientation, is constructed and operated in a specific orientation, so the terms describing the positional relationship in the accompanying drawings are only used for exemplary illustration, and should not be construed as a limitation of the present invention. situation to understand the specific meaning of the above terms.
请参阅图1，如图所示，钒钛铁精矿、粘结剂、还原剂在直接还原(1)装置里进行选择性还原，得到钒钛金属化球团，钒钛金属化球团具有85％以上的金属化率、不高于2.0％的碳含量；之后钒钛金属化球团热送至电炉炼钢车间，在电炉冶炼装置里进行熔化分离和脱碳升温处理，熔化分离阶段通过电弧加热熔化钒钛金属化球团，根据炉内热平衡情况及输入功率，控制钒钛金属化球团加料速度、吹氧及喷碳操作，熔清后通过炉门出渣至渣罐内，得到钒渣和熔分钢水；钒渣碱度为0.15～0.30，渣中五氧化二钒含量4～8％；熔分钢水C含量不高于0.20％，P含量不高于0.01％，S含量不高于0.03％，Fe不低于99.5％。脱碳升温阶段通过继续向炉内加入石灰、轻烧、萤石等造渣料、供电及吹氧，实现熔分钢水的脱碳升温，得到高纯钢水；高纯钢水C含量不高于0.10％，P含量不高于0.005％，S含量不高于0.03％。之后，高纯钢水经过精炼脱硫和真空脱碳得到C含量不高于0.01％，P含量不高于0.005％，S含量不高于0.005％的合格钢水；合格钢水经钢水成型装置如连铸和轧制成工业纯铁。Please refer to Figure 1. As shown in the figure, the vanadium-titanium iron concentrate, the binder and the reducing agent are selectively reduced in the direct reduction (1) device to obtain the vanadium-titanium metallized pellets. The vanadium-titanium metallized pellets have The metallization rate is more than 85%, and the carbon content is not higher than 2.0%; then the vanadium-titanium metallized pellets are sent to the electric furnace steelmaking workshop, and the melting separation and decarburization heating treatment are carried out in the electric furnace smelting device. Arc heating and melting the vanadium-titanium metallized pellets, according to the heat balance in the furnace and the input power, the vanadium-titanium metallized pellets feeding speed, oxygen blowing and carbon injection operations are controlled, and after melting, the slag is discharged into the slag tank through the furnace door to obtain Vanadium slag and molten molten steel; the basicity of vanadium slag is 0.15～0.30, the content of vanadium pentoxide in the slag is 4～8%; Above 0.03%, Fe is not less than 99.5%. In the decarburization and heating stage, by continuing to add lime, light burning, fluorite and other slag-forming materials into the furnace, power supply and oxygen blowing, the decarburization and heating of molten molten steel are realized to obtain high-purity molten steel; the C content of high-purity molten steel is not higher than 0.10 %, the P content is not higher than 0.005%, and the S content is not higher than 0.03%. After that, the high-purity molten steel undergoes refining desulfurization and vacuum decarburization to obtain qualified molten steel with a C content of not more than 0.01%, a P content of not more than 0.005%, and a S content of not more than 0.005%; Rolled into industrial pure iron.
最后说明的是，以上实施例仅用以说明本发明的技术方案而非限制，尽管参照较佳实施例对本发明进行了详细说明，本领域的普通技术人员应当理解，可以对本发明的技术方案进行修改或者等同替换，而不脱离本技术方案的宗旨和范围，其均应涵盖在本发明的权利要求范围当中。Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be Modifications or equivalent replacements, without departing from the spirit and scope of the technical solution, should all be included in the scope of the claims of the present invention.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115305310A (en) * | 2022-09-13 | 2022-11-08 | 江苏省沙钢钢铁研究院有限公司 | Method for using metallized pellets in electric arc furnace |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101538634A (en) * | 2009-02-05 | 2009-09-23 | 丁家伟 | Smelting process and device of pure iron |
| US20110154951A1 (en) * | 2008-09-16 | 2011-06-30 | Istc Co., Ltd. | Process for producing molten iron |
| CN102690921A (en) * | 2012-06-19 | 2012-09-26 | 北京神雾环境能源科技集团股份有限公司 | Method for comprehensively utilizing vanadium titano-magnetite by melting and separating through reduction-fuel smelting furnace of rotary hearth furnace |
| CN103643117A (en) * | 2013-12-11 | 2014-03-19 | 江苏大学 | Ultra-low aluminum steel and smelting method thereof |
| CN104451385A (en) * | 2014-12-09 | 2015-03-25 | 抚顺特殊钢股份有限公司 | Low-carbon low-nitrogen and high-oxygen industrial pure iron and production method thereof |
| CN110438413A (en) * | 2019-08-20 | 2019-11-12 | 中冶赛迪工程技术股份有限公司 | A kind of production technology of vanadium-containing steel bar |
| CN110564906A (en) * | 2019-07-19 | 2019-12-13 | 陕西有色冶金矿业集团有限公司 | Method for separating and enriching vanadium from iron ore concentrate and producing pure iron |
| CN111500813A (en) * | 2020-04-23 | 2020-08-07 | 中冶赛迪工程技术股份有限公司 | A method for smelting and separating vanadium-titanium metallized pellets in an electric furnace to utilize iron and vanadium resources |
-
2020
- 2020-09-08 CN CN202010936628.8A patent/CN111961803A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110154951A1 (en) * | 2008-09-16 | 2011-06-30 | Istc Co., Ltd. | Process for producing molten iron |
| CN101538634A (en) * | 2009-02-05 | 2009-09-23 | 丁家伟 | Smelting process and device of pure iron |
| CN102690921A (en) * | 2012-06-19 | 2012-09-26 | 北京神雾环境能源科技集团股份有限公司 | Method for comprehensively utilizing vanadium titano-magnetite by melting and separating through reduction-fuel smelting furnace of rotary hearth furnace |
| CN103643117A (en) * | 2013-12-11 | 2014-03-19 | 江苏大学 | Ultra-low aluminum steel and smelting method thereof |
| CN104451385A (en) * | 2014-12-09 | 2015-03-25 | 抚顺特殊钢股份有限公司 | Low-carbon low-nitrogen and high-oxygen industrial pure iron and production method thereof |
| CN110564906A (en) * | 2019-07-19 | 2019-12-13 | 陕西有色冶金矿业集团有限公司 | Method for separating and enriching vanadium from iron ore concentrate and producing pure iron |
| CN110438413A (en) * | 2019-08-20 | 2019-11-12 | 中冶赛迪工程技术股份有限公司 | A kind of production technology of vanadium-containing steel bar |
| CN111500813A (en) * | 2020-04-23 | 2020-08-07 | 中冶赛迪工程技术股份有限公司 | A method for smelting and separating vanadium-titanium metallized pellets in an electric furnace to utilize iron and vanadium resources |
Non-Patent Citations (1)
| Title |
|---|
| 中国金属学会等: "《附录 《2011-2020年中国钢铁工业科学与技术发展指南》关键技术说明》", 30 September 2015 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115305310A (en) * | 2022-09-13 | 2022-11-08 | 江苏省沙钢钢铁研究院有限公司 | Method for using metallized pellets in electric arc furnace |
| CN115305310B (en) * | 2022-09-13 | 2023-10-20 | 江苏省沙钢钢铁研究院有限公司 | A method of using metallized pellets in electric arc furnaces |
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