CN115874005A - Smelting method by adding iron ore - Google Patents
Smelting method by adding iron ore Download PDFInfo
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- CN115874005A CN115874005A CN202211355978.0A CN202211355978A CN115874005A CN 115874005 A CN115874005 A CN 115874005A CN 202211355978 A CN202211355978 A CN 202211355978A CN 115874005 A CN115874005 A CN 115874005A
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 116
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000003723 Smelting Methods 0.000 title claims abstract description 19
- 239000000843 powder Substances 0.000 claims abstract description 87
- VASIZKWUTCETSD-UHFFFAOYSA-N oxomanganese Chemical compound [Mn]=O VASIZKWUTCETSD-UHFFFAOYSA-N 0.000 claims abstract description 46
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 38
- 239000006004 Quartz sand Substances 0.000 claims abstract description 28
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 26
- 238000005453 pelletization Methods 0.000 claims abstract description 26
- 239000010959 steel Substances 0.000 claims abstract description 26
- 238000007670 refining Methods 0.000 claims abstract description 25
- 239000007789 gas Substances 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 21
- 229910052786 argon Inorganic materials 0.000 claims abstract description 19
- 238000007664 blowing Methods 0.000 claims abstract description 19
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 17
- 239000003245 coal Substances 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 13
- 229910052500 inorganic mineral Inorganic materials 0.000 claims abstract description 7
- 239000011707 mineral Substances 0.000 claims abstract description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 6
- 239000001301 oxygen Substances 0.000 claims abstract description 6
- 239000012257 stirred material Substances 0.000 claims abstract description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 20
- 239000004408 titanium dioxide Substances 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 6
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 6
- 229910052799 carbon Inorganic materials 0.000 claims description 6
- 229910052698 phosphorus Inorganic materials 0.000 claims description 6
- 239000011574 phosphorus Substances 0.000 claims description 6
- 230000009467 reduction Effects 0.000 claims description 6
- 238000007873 sieving Methods 0.000 claims description 6
- 229910052717 sulfur Inorganic materials 0.000 claims description 6
- 239000011593 sulfur Substances 0.000 claims description 6
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 5
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 5
- 238000009749 continuous casting Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 239000004571 lime Substances 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims 3
- 241001062472 Stokellia anisodon Species 0.000 claims 1
- 229910001570 bauxite Inorganic materials 0.000 claims 1
- 238000005266 casting Methods 0.000 claims 1
- 238000003756 stirring Methods 0.000 abstract description 5
- 239000002994 raw material Substances 0.000 abstract description 3
- 230000005611 electricity Effects 0.000 abstract description 2
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 abstract 1
- 239000010936 titanium Substances 0.000 abstract 1
- 229910052719 titanium Inorganic materials 0.000 abstract 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- 238000009842 primary steelmaking Methods 0.000 description 4
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007123 defense Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 238000009849 vacuum degassing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
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- 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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- Treatment Of Steel In Its Molten State (AREA)
- Manufacture And Refinement Of Metals (AREA)
Abstract
本发明公开了一种添加铁矿石的冶炼方法，包括以下步骤：(1)将铁矿石置于破碎机中进行破碎处理后置于球磨机内进行研磨得到矿粉；(2)将石英砂、一氧化锰分别制成石英砂细粉、一氧化锰细粉，将煤粉制成细粉；(3)将矿粉与石英砂细粉、一氧化锰细粉、煤粉细粉和钛白粉倒入搅拌机内搅拌均匀，将搅拌后的物料置于造球盘内进行造球；(4)将球型物料置于气基竖炉内，得到直接还原铁；(5)将直接还原铁置于电炉内，通过加热、吹氧、造渣操作，得到初炼钢液；(6)将初炼钢液置于精炼炉内进行精炼：(7)在精炼炉加入造渣剂和脱氧剂的同时开始钢包底吹氩；极大地简化了工艺流程，减少原燃辅料、电等消耗，减少排放，降低人工成本。The invention discloses a smelting method for adding iron ore, which comprises the following steps: (1) placing the iron ore in a crusher for crushing treatment, and then placing the iron ore in a ball mill for grinding to obtain mineral powder; (2) placing the quartz sand , manganese monoxide are made into quartz sand fine powder, manganese monoxide fine powder, and coal powder is made into fine powder; (3) mineral powder is mixed with quartz sand fine powder, manganese monoxide fine powder, coal fine powder and titanium Pour the white powder into the mixer and stir evenly, put the stirred material in the pelletizing plate for pelletizing; (4) put the spherical material in the gas-based shaft furnace to obtain direct reduced iron; (5) put the direct reduced iron Put it in an electric furnace, heat, blow oxygen, and make slagging operations to obtain the primary molten steel; (6) Put the primary molten steel in the refining furnace for refining: (7) Add slagging agent and deoxidizer to the refining furnace At the same time, argon blowing at the bottom of the ladle is started; the process flow is greatly simplified, the consumption of raw materials, auxiliary materials, electricity, etc. is reduced, emissions are reduced, and labor costs are reduced.
Description
技术领域technical field
本发明涉及炼钢领域，尤其涉及一种添加铁矿石的冶炼方法。The invention relates to the field of steelmaking, in particular to a smelting method for adding iron ore.
背景技术Background technique
钢铁材料的发展方向和趋势是高洁净度、高均匀性、超细组织、高精度和高附加值的高品质钢材，高端装备用钢铁材料是高技术含量产品，是航空航天、能源交通、海洋工程、汽车轻量化、环保等产业和重大装备制造、重大工程建设、战略性新兴产业及国防先进武器所需的关键基础材料；The development direction and trend of steel materials are high-quality steel products with high cleanliness, high uniformity, ultra-fine structure, high precision and high added value. Steel materials for high-end equipment are high-tech products. Key basic materials required for industries such as engineering, automobile lightweight, environmental protection, and major equipment manufacturing, major engineering construction, strategic emerging industries, and advanced weapons for national defense;
发明内容Contents of the invention
本发明目的是提供一种高品质的钢材冶炼工艺。The purpose of the invention is to provide a high-quality steel smelting process.
本发明解决技术问题采用如下技术方案：一种添加铁矿石的冶炼方法，其特征在于，包括以下步骤：The present invention solves the technical problem and adopts the following technical scheme: a kind of smelting method of adding iron ore, it is characterized in that, comprises the following steps:
(1)将铁矿石置于破碎机中进行破碎处理得到铁矿石粉，将铁矿石粉通过筛分机进行筛分筛出粒径小于20mm的铁矿石粉，再将铁矿石粉置于球磨机内进行研磨得到小于220目级别的矿粉；(1) Put the iron ore in a crusher for crushing to obtain iron ore powder, sieve the iron ore powder through a sieving machine to screen out iron ore powder with a particle size of less than 20mm, and then place the iron ore powder in a ball mill Grinding to obtain mineral powder of less than 220 mesh grade;
(2)将石英砂、一氧化锰依次经过破碎、研磨，分别制成石英砂细粉、一氧化锰细粉，将煤粉经过磨煤得到细粉；(2) Quartz sand and manganese monoxide are crushed and ground successively to make quartz sand fine powder and manganese monoxide fine powder respectively, and coal powder is pulverized to obtain fine powder;
(3)将步骤(1)制得的矿粉与步骤(2)中的石英砂细粉、一氧化锰细粉、煤粉细粉和钛白粉倒入搅拌机内搅拌均匀，将搅拌后的物料置于造球盘内进行造球；(3) Pour the ore powder prepared in step (1) and quartz sand fine powder, manganese monoxide fine powder, coal fine powder and titanium dioxide in the step (2) into the mixer and stir evenly, and the stirred material Place in the pelletizing tray for pelletizing;
(4)将步骤(3)中造球得到的球型物料置于气基竖炉内，气基竖炉内通入还原性气体进行冶炼3-6h，得到直接还原铁；(4) placing the spherical material obtained by pelletizing in step (3) in a gas-based shaft furnace, and feeding reducing gas into the gas-based shaft furnace for smelting for 3-6 hours to obtain direct reduced iron;
(5)将步骤(4)中得到的直接还原铁置于电炉内，通过加热、吹氧、造渣操作，将直接还原铁内的碳、硫、磷等元素进一步脱除，得到初炼钢液；(5) Place the direct reduced iron obtained in step (4) in an electric furnace, and further remove carbon, sulfur, phosphorus and other elements in the direct reduced iron through heating, oxygen blowing, and slagging operations to obtain primary steelmaking liquid;
(6)将步骤(5)中制得的初炼钢液置于精炼炉内，待工艺满足以下条件时加入造渣剂和脱氧剂进行精炼：(6) the first molten steel that is made in the step (5) is placed in the refining furnace, and when the process satisfies the following conditions, add slagging agent and deoxidizer to refine:
所述工艺条件为精炼炉内温度范围1650-1700℃；The process condition is that the temperature range in the refining furnace is 1650-1700°C;
(7)在步骤(6)于精炼炉加入造渣剂和脱氧剂的同时开始钢包底吹氩，得到高纯净钢水；(7) start ladle bottom blowing argon while adding slagging agent and deoxidizer in refining furnace in step (6), obtain high-purity molten steel;
(8)将步骤(7)中制得的高纯净钢水通过连铸机进行连铸得到钢坯。(8) The high-purity molten steel obtained in step (7) is continuously cast by a continuous casting machine to obtain a billet.
优选的，所述步骤(3)中物料于造球盘内造球所得到的球型物料的粒度为 10-15mm。Preferably, the particle size of the spherical material obtained by pelletizing the material in the pelletizing disc in the step (3) is 10-15mm.
优选的，所述步骤(4)中的气基竖炉内的还原温度范围为1600～1700℃。Preferably, the reduction temperature in the gas-based shaft furnace in the step (4) ranges from 1600 to 1700°C.
优选的，所述步骤(6)中的精炼时间为30-50min。Preferably, the refining time in the step (6) is 30-50min.
优选的，所述步骤(7)中吹氩的氩气流量为160-210m3/h、吹氩的时间为 3-4min、钢包底部的烘烤温度范围为200-240℃。Preferably, in the step (7), the flow rate of argon blowing argon is 160-210 m 3 /h, the time of argon blowing is 3-4 minutes, and the baking temperature at the bottom of the ladle is in the range of 200-240°C.
优选的，所述铁矿粉、石英砂、一氧化锰、钛白粉和煤粉的重量配比为 1:0.08:0.03:0.02:0.1。Preferably, the weight ratio of the iron ore powder, quartz sand, manganese monoxide, titanium dioxide and coal powder is 1:0.08:0.03:0.02:0.1.
优选的，所述造渣剂为白灰、矾土和石英砂按照1：1：16的重量配比组成。Preferably, the slagging agent is composed of lime, alumina and quartz sand in a weight ratio of 1:1:16.
本发明具有如下有益效果：The present invention has following beneficial effect:
1.采用竖炉进行铁矿石直接还原生产还原铁，极大程度的简化了工艺流程，减少原燃辅料、电等消耗，减少排放，降低人工成本。1. The use of shaft furnaces for direct reduction of iron ore to produce reduced iron greatly simplifies the process flow, reduces the consumption of raw materials, auxiliary materials, electricity, etc., reduces emissions, and reduces labor costs.
2.依次通过气基竖炉、电炉、精炼炉多次对钢水进行加热升温、造渣、吹氩和真空脱气处理，有效的出去刚水中的硫、碳、磷等有害元素，提高钢水纯净度，以此得到高质量的钢坯。2. Through the gas-based shaft furnace, electric furnace and refining furnace, the molten steel is heated up, slag-forming, argon blowing and vacuum degassing are performed several times in order to effectively remove harmful elements such as sulfur, carbon and phosphorus in the steel water, and improve the purity of molten steel Degree, in order to obtain high-quality billets.
3.对铁矿石的选择并无要求，从而对原料选择性更广泛，可充分提高含铁矿石利用率。3. There is no requirement for the selection of iron ore, so the selection of raw materials is wider, and the utilization rate of iron-containing ore can be fully improved.
具体实施方式Detailed ways
下面结合对本发明的技术方案作进一步阐述。The technical solutions of the present invention will be further elaborated below.
实施例1Example 1
本实施例提供了一种添加铁矿石的冶炼方法，其特征在于，包括以下步骤：This embodiment provides a kind of smelting method of adding iron ore, it is characterized in that, comprises the following steps:
(1)将铁矿石置于破碎机中进行破碎处理得到铁矿石粉，将铁矿石粉通过筛分机进行筛分筛出粒径小于20mm的铁矿石粉，再将铁矿石粉置于球磨机内进行研磨得到小于220目级别的矿粉；(1) Put the iron ore in a crusher for crushing to obtain iron ore powder, sieve the iron ore powder through a sieving machine to screen out iron ore powder with a particle size less than 20mm, and then place the iron ore powder in a ball mill Grinding to obtain mineral powder of less than 220 mesh grade;
(2)将石英砂、一氧化锰依次经过破碎、研磨，分别制成石英砂细粉、一氧化锰细粉，将煤粉经过磨煤得到细粉；(2) Quartz sand and manganese monoxide are crushed and ground successively to make quartz sand fine powder and manganese monoxide fine powder respectively, and coal powder is pulverized to obtain fine powder;
(3)将步骤(1)制得的矿粉与步骤(2)中的石英砂细粉、一氧化锰细粉、煤粉细粉和钛白粉倒入搅拌机内搅拌均匀，将搅拌后的物料置于造球盘内进行造球，物料于造球盘内造球所得到的球型物料的粒度为10mm；(3) Pour the ore powder prepared in step (1) and quartz sand fine powder, manganese monoxide fine powder, coal fine powder and titanium dioxide in the step (2) into the mixer and stir evenly, and the stirred material Place it in the pelletizing tray for pelletizing, and the particle size of the spherical material obtained by pelletizing the material in the pelletizing tray is 10mm;
(4)将步骤(3)中造球得到的球型物料置于气基竖炉内，气基竖炉内通入还原性气体进行冶炼3h，得到直接还原铁，气基竖炉内的还原温度为1600℃；(4) Place the spherical material obtained by pelletizing in step (3) in a gas-based shaft furnace, and introduce a reducing gas into the gas-based shaft furnace for smelting for 3 hours to obtain direct reduced iron, and the reduction in the gas-based shaft furnace The temperature is 1600°C;
(5)将步骤(4)中得到的直接还原铁置于电炉内，通过加热、吹氧、造渣操作，将直接还原铁内的碳、硫、磷等元素进一步脱除，得到初炼钢液；(5) Place the direct reduced iron obtained in step (4) in an electric furnace, and further remove carbon, sulfur, phosphorus and other elements in the direct reduced iron through heating, oxygen blowing, and slagging operations to obtain primary steelmaking liquid;
(6)将步骤(5)中制得的初炼钢液置于精炼炉内，待工艺满足以下条件时加入造渣剂和脱氧剂进行精炼，精炼时间为30min：(6) Place the primary molten steel made in step (5) in the refining furnace, add slagging agent and deoxidizer to refine when the process satisfies the following conditions, and the refining time is 30min:
所述工艺条件为精炼炉内温度1650℃；The process condition is that the temperature in the refining furnace is 1650°C;
(7)在步骤(6)于精炼炉加入造渣剂和脱氧剂的同时开始钢包底吹氩，得到高纯净钢水，吹氩的氩气流量为160m3/h、吹氩的时间为3min、钢包底部的烘烤温度范围为200℃；(7) start ladle bottom blowing argon while adding slagging agent and deoxidizer in refining furnace in step (6), obtain high-purity molten steel, the argon gas flow rate of blowing argon is 160m 3 /h, the time of blowing argon is 3min, The baking temperature range at the bottom of the ladle is 200°C;
(8)将步骤(7)中制得的高纯净钢水通过连铸机进行连铸得到钢坯。(8) The high-purity molten steel obtained in step (7) is continuously cast by a continuous casting machine to obtain a billet.
在一个更优选的实施例中，所述铁矿粉、石英砂、一氧化锰、钛白粉和煤粉的重量配比为1:0.08:0.03:0.02:0.1。In a more preferred embodiment, the weight ratio of iron ore powder, quartz sand, manganese monoxide, titanium dioxide and coal powder is 1:0.08:0.03:0.02:0.1.
在一个更优选的实施例中，所述造渣剂为白灰、矾土和石英砂按照1：1： 16的重量配比组成。In a more preferred embodiment, the slagging agent is composed of lime, alumina and quartz sand in a weight ratio of 1:1:16.
实施例2Example 2
本实施例提供了一种添加铁矿石的冶炼方法，其特征在于，包括以下步骤：This embodiment provides a kind of smelting method of adding iron ore, it is characterized in that, comprises the following steps:
(1)将铁矿石置于破碎机中进行破碎处理得到铁矿石粉，将铁矿石粉通过筛分机进行筛分筛出粒径小于20mm的铁矿石粉，再将铁矿石粉置于球磨机内进行研磨得到小于220目级别的矿粉；(1) Put the iron ore in a crusher for crushing to obtain iron ore powder, sieve the iron ore powder through a sieving machine to screen out iron ore powder with a particle size less than 20mm, and then place the iron ore powder in a ball mill Grinding to obtain mineral powder of less than 220 mesh grade;
(2)将石英砂、一氧化锰依次经过破碎、研磨，分别制成石英砂细粉、一氧化锰细粉，将煤粉经过磨煤得到细粉；(2) Quartz sand and manganese monoxide are crushed and ground successively to make quartz sand fine powder and manganese monoxide fine powder respectively, and coal powder is pulverized to obtain fine powder;
(3)将步骤(1)制得的矿粉与步骤(2)中的石英砂细粉、一氧化锰细粉、煤粉细粉和钛白粉倒入搅拌机内搅拌均匀，将搅拌后的物料置于造球盘内进行造球，物料于造球盘内造球所得到的球型物料的粒度为15mm；(3) Pour the ore powder prepared in step (1) and quartz sand fine powder, manganese monoxide fine powder, coal fine powder and titanium dioxide in the step (2) into the mixer and stir evenly, and the stirred material Put it in a pelletizing tray for pelletizing, and the particle size of the spherical material obtained by pelletizing the material in the pelletizing tray is 15mm;
(4)将步骤(3)中造球得到的球型物料置于气基竖炉内，气基竖炉内通入还原性气体进行冶炼6h，得到直接还原铁，气基竖炉内的还原温度为1700℃；(4) Place the spherical material obtained by pelletizing in step (3) in a gas-based shaft furnace, and introduce a reducing gas into the gas-based shaft furnace for smelting for 6 hours to obtain direct reduced iron, and the reduction in the gas-based shaft furnace The temperature is 1700°C;
(5)将步骤(4)中得到的直接还原铁置于电炉内，通过加热、吹氧、造渣操作，将直接还原铁内的碳、硫、磷等元素进一步脱除，得到初炼钢液；(5) Place the direct reduced iron obtained in step (4) in an electric furnace, and further remove carbon, sulfur, phosphorus and other elements in the direct reduced iron through heating, oxygen blowing, and slagging operations to obtain primary steelmaking liquid;
(6)将步骤(5)中制得的初炼钢液置于精炼炉内，待工艺满足以下条件时加入造渣剂和脱氧剂进行精炼，精炼时间为50min：(6) Place the primary molten steel made in the step (5) in the refining furnace, add slagging agent and deoxidizer to refine when the process satisfies the following conditions, and the refining time is 50min:
所述工艺条件为精炼炉内温度1700℃；The process condition is that the temperature in the refining furnace is 1700°C;
(7)在步骤(6)于精炼炉加入造渣剂和脱氧剂的同时开始钢包底吹氩，得到高纯净钢水，吹氩的氩气流量为210m3/h、吹氩的时间为4min、钢包底部的烘烤温度范围为240℃；(7) start ladle bottom blowing argon while adding slagging agent and deoxidizer in refining furnace in step (6), obtain high-purity molten steel, the argon gas flow rate of blowing argon is 210m 3 /h, the time of blowing argon is 4min, The baking temperature range at the bottom of the ladle is 240°C;
(8)将步骤(7)中制得的高纯净钢水通过连铸机进行连铸得到钢坯。(8) The high-purity molten steel obtained in step (7) is continuously cast by a continuous casting machine to obtain a billet.
在一个更优选的实施例中，所述铁矿粉、石英砂、一氧化锰、钛白粉和煤粉的重量配比为1:0.08:0.03:0.02:0.1。In a more preferred embodiment, the weight ratio of iron ore powder, quartz sand, manganese monoxide, titanium dioxide and coal powder is 1:0.08:0.03:0.02:0.1.
在一个更优选的实施例中，所述造渣剂为白灰、矾土和石英砂按照1：1： 16的重量配比组成。In a more preferred embodiment, the slagging agent is composed of lime, alumina and quartz sand in a weight ratio of 1:1:16.
实施例3Example 3
本实施例提供了一种添加铁矿石的冶炼方法，其特征在于，包括以下步骤：This embodiment provides a kind of smelting method of adding iron ore, it is characterized in that, comprises the following steps:
(1)将铁矿石置于破碎机中进行破碎处理得到铁矿石粉，将铁矿石粉通过筛分机进行筛分筛出粒径小于20mm的铁矿石粉，再将铁矿石粉置于球磨机内进行研磨得到小于220目级别的矿粉；(1) Put the iron ore in a crusher for crushing to obtain iron ore powder, sieve the iron ore powder through a sieving machine to screen out iron ore powder with a particle size less than 20mm, and then place the iron ore powder in a ball mill Grinding to obtain mineral powder of less than 220 mesh grade;
(2)将石英砂、一氧化锰依次经过破碎、研磨，分别制成石英砂细粉、一氧化锰细粉，将煤粉经过磨煤得到细粉；(2) Quartz sand and manganese monoxide are crushed and ground successively to make quartz sand fine powder and manganese monoxide fine powder respectively, and coal powder is pulverized to obtain fine powder;
(3)将步骤(1)制得的矿粉与步骤(2)中的石英砂细粉、一氧化锰细粉、煤粉细粉和钛白粉倒入搅拌机内搅拌均匀，将搅拌后的物料置于造球盘内进行造球，物料于造球盘内造球所得到的球型物料的粒度为13mm；(3) Pour the ore powder prepared in step (1) and quartz sand fine powder, manganese monoxide fine powder, coal fine powder and titanium dioxide in the step (2) into the mixer and stir evenly, and the stirred material Put it in a pelletizing tray for pelletizing, and the particle size of the spherical material obtained by pelletizing the material in the pelletizing tray is 13mm;
(4)将步骤(3)中造球得到的球型物料置于气基竖炉内，气基竖炉内通入还原性气体进行冶炼5h，得到直接还原铁，气基竖炉内的还原温度为1650℃；(4) Place the spherical material obtained by pelletizing in step (3) in a gas-based shaft furnace, and pass a reducing gas into the gas-based shaft furnace for smelting for 5 hours to obtain direct reduced iron, and the reduction in the gas-based shaft furnace The temperature is 1650°C;
(5)将步骤(4)中得到的直接还原铁置于电炉内，通过加热、吹氧、造渣操作，将直接还原铁内的碳、硫、磷等元素进一步脱除，得到初炼钢液；(5) Place the direct reduced iron obtained in step (4) in an electric furnace, and further remove carbon, sulfur, phosphorus and other elements in the direct reduced iron through heating, oxygen blowing, and slagging operations to obtain primary steelmaking liquid;
(6)将步骤(5)中制得的初炼钢液置于精炼炉内，待工艺满足以下条件时加入造渣剂和脱氧剂进行精炼，精炼时间为30min：(6) Place the primary molten steel made in step (5) in the refining furnace, add slagging agent and deoxidizer to refine when the process satisfies the following conditions, and the refining time is 30min:
所述工艺条件为精炼炉内温度1680℃；The process condition is that the temperature in the refining furnace is 1680°C;
(7)在步骤(6)于精炼炉加入造渣剂和脱氧剂的同时开始钢包底吹氩，得到高纯净钢水，吹氩的氩气流量为180m3/h、吹氩的时间为3.5min、钢包底部的烘烤温度范围为220℃；(7) While adding slagging agent and deoxidizer to the refining furnace in step (6), start argon blowing at the bottom of the ladle to obtain high-purity molten steel. , The baking temperature range of the bottom of the ladle is 220°C;
(8)将步骤(7)中制得的高纯净钢水通过连铸机进行连铸得到钢坯。(8) The high-purity molten steel obtained in step (7) is continuously cast by a continuous casting machine to obtain a billet.
在一个更优选的实施例中，所述铁矿粉、石英砂、一氧化锰、钛白粉和煤粉的重量配比为1:0.08:0.03:0.02:0.1。In a more preferred embodiment, the weight ratio of iron ore powder, quartz sand, manganese monoxide, titanium dioxide and coal powder is 1:0.08:0.03:0.02:0.1.
在一个更优选的实施例中，所述造渣剂为白灰、矾土和石英砂按照1：1： 16的重量配比组成。In a more preferred embodiment, the slagging agent is composed of lime, alumina and quartz sand in a weight ratio of 1:1:16.
以上实施例的先后顺序仅为便于描述，不代表实施例的优劣。The sequence of the above embodiments is only for convenience of description, and does not represent the advantages or disadvantages of the embodiments.
最后应说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的精神和范围。Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: it can still be Modifications are made to the technical solutions described in the foregoing embodiments, or equivalent replacements are made to some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the various embodiments of the present invention.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117535464A (en) * | 2023-10-19 | 2024-02-09 | 中冶赛迪工程技术股份有限公司 | Low-carbon steelmaking method and system using low-grade direct reduced iron as raw material |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1367496A (en) * | 1970-10-19 | 1974-09-18 | Cold Bound Pellets Ab | Method of manufacturing and treating iron ore concentrate agglomerate s |
| US5681367A (en) * | 1996-06-20 | 1997-10-28 | Usx Engineers & Consultants, Inc. | Method of producing hot metal |
| CN101768663A (en) * | 2010-02-01 | 2010-07-07 | 泉州市豪胜铸造有限公司 | Cold bonded iron-carbon pellets, and manufacturing method and applications thereof as ironmaking burden in shaft furnace or blast furnace |
| CN103255255A (en) * | 2013-06-03 | 2013-08-21 | 中冶赛迪工程技术股份有限公司 | Gas-based shaft furnace direct reduction-electric furnace smelting separation process of vanadium titano-magnetite |
| CN110484672A (en) * | 2019-09-11 | 2019-11-22 | 中南大学 | A kind of method of gas-based shaft kiln production direct reduced iron |
| CN114959150A (en) * | 2022-06-02 | 2022-08-30 | 美匡冶金技术研究院(苏州)有限公司 | Special mixed iron ore powder for smelting reduction non-blast furnace ironmaking and preparation method thereof |
| CN115074477A (en) * | 2022-06-27 | 2022-09-20 | 盐城市联鑫钢铁有限公司 | Short-process low-carbon smelting process for high-quality steel |
-
2022
- 2022-11-01 CN CN202211355978.0A patent/CN115874005B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1367496A (en) * | 1970-10-19 | 1974-09-18 | Cold Bound Pellets Ab | Method of manufacturing and treating iron ore concentrate agglomerate s |
| US5681367A (en) * | 1996-06-20 | 1997-10-28 | Usx Engineers & Consultants, Inc. | Method of producing hot metal |
| CN101768663A (en) * | 2010-02-01 | 2010-07-07 | 泉州市豪胜铸造有限公司 | Cold bonded iron-carbon pellets, and manufacturing method and applications thereof as ironmaking burden in shaft furnace or blast furnace |
| CN103255255A (en) * | 2013-06-03 | 2013-08-21 | 中冶赛迪工程技术股份有限公司 | Gas-based shaft furnace direct reduction-electric furnace smelting separation process of vanadium titano-magnetite |
| CN110484672A (en) * | 2019-09-11 | 2019-11-22 | 中南大学 | A kind of method of gas-based shaft kiln production direct reduced iron |
| CN114959150A (en) * | 2022-06-02 | 2022-08-30 | 美匡冶金技术研究院(苏州)有限公司 | Special mixed iron ore powder for smelting reduction non-blast furnace ironmaking and preparation method thereof |
| CN115074477A (en) * | 2022-06-27 | 2022-09-20 | 盐城市联鑫钢铁有限公司 | Short-process low-carbon smelting process for high-quality steel |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117535464A (en) * | 2023-10-19 | 2024-02-09 | 中冶赛迪工程技术股份有限公司 | Low-carbon steelmaking method and system using low-grade direct reduced iron as raw material |
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