CN203807569U - Electrolytic reaction control device for reducing oxidability of slag - Google Patents
Electrolytic reaction control device for reducing oxidability of slag Download PDFInfo
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- CN203807569U CN203807569U CN201420172926.4U CN201420172926U CN203807569U CN 203807569 U CN203807569 U CN 203807569U CN 201420172926 U CN201420172926 U CN 201420172926U CN 203807569 U CN203807569 U CN 203807569U
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- 239000002893 slag Substances 0.000 title claims abstract description 43
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 11
- 230000003647 oxidation Effects 0.000 claims abstract description 9
- 238000007254 oxidation reaction Methods 0.000 claims abstract description 9
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 6
- 239000010439 graphite Substances 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 239000003870 refractory metal Substances 0.000 claims 3
- 239000011214 refractory ceramic Substances 0.000 claims 1
- 238000005245 sintering Methods 0.000 claims 1
- 229910000831 Steel Inorganic materials 0.000 abstract description 25
- 239000010959 steel Substances 0.000 abstract description 25
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 abstract description 20
- 238000000034 method Methods 0.000 abstract description 5
- 230000005684 electric field Effects 0.000 abstract description 4
- 238000006722 reduction reaction Methods 0.000 abstract description 2
- 238000002407 reforming Methods 0.000 abstract 1
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 238000007670 refining Methods 0.000 description 4
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000003749 cleanliness Effects 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 238000005868 electrolysis reaction Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000003607 modifier Substances 0.000 description 2
- 238000009628 steelmaking Methods 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000011195 cermet Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009847 ladle furnace Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 230000035484 reaction time Effects 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
本实用新型提供一种降低炉渣氧化性的电解反应控制装置，包括直流电源控制装置、阳极升降装置、阳极、阴极升降装置和阴极；阳极升降装置的下部安装有阳极，阴极升降装置的下部安装有阴极，阳极通过导线与直流电源控制装置的直流电源正极连接，阴极通过导线与直流电源控制装置的直流电源负极连接。将阳极插入钢包顶渣中，阴极插入钢液中，然后由直流电源通过阳极与阴极对熔渣钢液系统施加稳定的直流电场，使渣中铁氧化物发生电解还原反应，随着电解反应的持续进行，不断消耗渣中的FeO，直至将渣中FeO降至目标含量。本实用新型能将钢包顶渣FeO含量由20%左右降至1%以下，并有效避免顶渣改质过程中对钢液造成的二次污染。
The utility model provides an electrolytic reaction control device for reducing the oxidation of slag, which comprises a DC power supply control device, an anode lifting device, an anode, a cathode lifting device and a cathode; The cathode and the anode are connected to the positive pole of the DC power supply of the DC power supply control device through wires, and the cathode is connected to the negative pole of the DC power supply of the DC power supply control device through wires. The anode is inserted into the top slag of the ladle, the cathode is inserted into the molten steel, and then a stable DC electric field is applied to the slag molten steel system through the anode and the cathode by the DC power supply, so that the iron oxide in the slag undergoes an electrolytic reduction reaction. As the electrolytic reaction continues Continue to consume FeO in the slag until the FeO in the slag is reduced to the target content. The utility model can reduce the FeO content of ladle top slag from about 20% to below 1%, and effectively avoid secondary pollution to molten steel during the top slag reforming process.
Description
技术领域technical field
本实用新型属于炼钢工艺控制装置领域，尤其涉及一种降低炉渣氧化性的电解反应控制装置。The utility model belongs to the field of steelmaking process control devices, in particular to an electrolytic reaction control device for reducing the oxidation of slag.
背景技术Background technique
在炼钢精炼过程中，钢包中顶渣的氧化性（FeO+MnO含量，主要以FeO为主）对钢液成分以及钢质洁净度有着直接的影响。如对硫含量要求苛刻的高级别管线钢而言，在LF精炼深脱硫之前必须对钢包顶渣氧化性进行控制，一般顶渣氧化性需控制在2%以内，更严格的要控制在1.5%以内，这就要求在脱硫之前必须对顶渣进行改质处理。一般的改质剂都含有铝，改质后钢液中会产出大量的夹杂物，对钢质洁净度产生负面影响。而对生产超低碳钢而言，一般的生产路线为转炉生产出沸腾钢，经真空精炼降低钢水的碳含量。此路线中对钢包内顶渣改质较困难，现行改质方法是向钢包顶渣中加入改质剂，通过对钢水进行底吹氩气的方法来提供动力学条件。但这样做有很多弊端，如在真空精炼后改质，将造成精炼后的钢水氧化；若在真空精炼前改质，由于钢水含氧量高，顶渣改质剂与钢水中的氧反应，改质效果较差。如果不改质，在浇铸过程中，高氧化性的顶渣将对钢水造成二次污染。In the process of steelmaking and refining, the oxidizability of the top slag in the ladle (FeO+MnO content, mainly FeO) has a direct impact on the composition of molten steel and the cleanliness of steel. For example, for high-grade pipeline steel with strict requirements on sulfur content, the oxidizability of ladle top slag must be controlled before LF refining deep desulfurization. Generally, the oxidizability of top slag should be controlled within 2%, and more strictly, it should be controlled at 1.5%. This requires that the top slag must be upgraded before desulfurization. The general modifier contains aluminum, and a large number of inclusions will be produced in the molten steel after modification, which will have a negative impact on the cleanliness of the steel. For the production of ultra-low carbon steel, the general production route is to produce boiling steel in a converter, and reduce the carbon content of molten steel through vacuum refining. In this route, it is difficult to modify the top slag in the ladle. The current modification method is to add a modifier to the top slag of the ladle, and provide dynamic conditions by blowing argon at the bottom of the molten steel. However, there are many disadvantages in doing so, such as modification after vacuum refining, which will cause oxidation of the refined molten steel; The modification effect is poor. If it is not modified, the highly oxidizable top slag will cause secondary pollution to molten steel during the casting process.
发明内容Contents of the invention
本实用新型旨在提供一种可有效降低炉渣氧化性，并避免对钢液造成二次污染的电解反应控制装置。The utility model aims to provide an electrolytic reaction control device which can effectively reduce the oxidation of slag and avoid secondary pollution to molten steel.
为达此目的，本实用新型采取了如下技术解决方案：For reaching this purpose, the utility model has taken following technical solution:
降低炉渣氧化性的电解反应控制装置，包括直流电源控制装置、阳极升降装置、阳极、阴极升降装置和阴极；阳极升降装置的下部安装有阳极，阴极升降装置的下部安装有阴极，阳极通过导线与直流电源控制装置的直流电源正极连接，阴极通过导线与直流电源控制装置的直流电源负极连接。The electrolytic reaction control device for reducing the oxidation of slag, including DC power supply control device, anode lifting device, anode, cathode lifting device and cathode; the lower part of the anode lifting device is installed with the anode, and the lower part of the cathode lifting device is installed with the cathode. The DC power supply positive pole of the DC power supply control device is connected, and the cathode is connected with the DC power supply negative pole of the DC power supply control device through a wire.
所述阳极为耐高温金属陶瓷、石墨或耐高温金属，形状为圆柱体或平板。The anode is high-temperature-resistant cermet, graphite or high-temperature-resistant metal, and is in the shape of a cylinder or a flat plate.
所述阴极采用内外两层的复合结构，外层为具有绝缘性质的耐高温陶瓷、耐高温水泥，内层为具有耐高温导电性质的石墨、金属陶瓷或耐高温金属。The cathode adopts a composite structure of inner and outer layers, the outer layer is high-temperature-resistant ceramics and high-temperature-resistant cement with insulating properties, and the inner layer is graphite, cermets or high-temperature-resistant metals with high-temperature-resistant electrical conductivity.
本实用新型的使用方法是：The using method of the present utility model is:
当钢包运至电解处理工位后，将连接在直流电源正极上的阳极插入钢包顶渣中，控制阳极在顶渣中的位置，避免阳极与钢液接触；再将连接在直流电源负极上的阴极穿过顶渣后插入钢液中，并确保阴极导电部位不与顶渣接触；然后由直流电源通过阳极与阴极对熔渣钢液系统施加稳定的直流电场，直流电源电压控制在1～100V，输出电流控制在10～2000A，电解反应时间控制在30min以内，使渣中铁氧化物发生电解还原反应，随着电解反应的持续进行，不断消耗渣中的FeO，直至将渣中FeO降至目标含量。After the ladle is transported to the electrolytic treatment station, insert the anode connected to the positive pole of the DC power supply into the top slag of the ladle, control the position of the anode in the top slag, and avoid contact between the anode and the molten steel; then insert the anode connected to the negative pole of the DC power supply The cathode is inserted into the molten steel after passing through the top slag, and the conductive part of the cathode is not in contact with the top slag; then a stable DC electric field is applied to the slag molten steel system through the anode and cathode by the DC power supply, and the DC power supply voltage is controlled at 1 to 100V , the output current is controlled at 10-2000A, and the electrolysis reaction time is controlled within 30 minutes, so that the iron oxide in the slag undergoes an electrolytic reduction reaction. As the electrolysis reaction continues, the FeO in the slag is continuously consumed until the FeO in the slag is reduced to the target. content.
本实用新型的有益效果为：The beneficial effects of the utility model are:
本实用新型通过置入顶渣与钢液中的阳极与阴极对熔渣钢液系统施加一稳定的直流电场，能够将钢包顶渣FeO含量由20%左右降至1%以下，并可有效避免顶渣改质过程中对钢液造成的二次污染。The utility model applies a stable DC electric field to the slag molten steel system by placing the anode and cathode in the top slag and the molten steel, and can reduce the FeO content of the ladle top slag from about 20% to below 1%, and can effectively avoid Secondary pollution to molten steel during top slag modification.
附图说明Description of drawings
图1是电解反应控制装置使用状态示意图。Figure 1 is a schematic diagram of the use state of the electrolytic reaction control device.
图中：阳极升降装置1、阳极2、顶渣3、钢液4、钢包5、阴极升降装置6、阴极7、直流电源控制装置8。In the figure: anode lifting device 1, anode 2, top slag 3, molten steel 4, ladle 5, cathode lifting device 6, cathode 7, DC power supply control device 8.
具体实施方式Detailed ways
由图1可见，本实用新型电解反应控制装置主要是由阳极升降装置1、阳极2、阴极升降装置6、阴极7及直流电源控制装置8所组成。阳极升降装置1的下部安装有一石墨棒阳极2，阳极2通过阳极升降装置1对插入熔渣3的深度进行调节。阴极升降装置6的下部安装有一的阴极7，阴极7为内外两层复合结构的圆棒，外层包裹有耐高温水泥，内部为石墨棒；阴极7通过阴极升降装置6对其升降行程和位置进行调节。阳极2通过导线与直流电源控制装置8的直流电源正极连接，阴极通过导线与直流电源控制装置8的直流电源负极连接。As can be seen from FIG. 1 , the electrolytic reaction control device of the present invention is mainly composed of an anode lifting device 1 , an anode 2 , a cathode lifting device 6 , a cathode 7 and a DC power supply control device 8 . A graphite rod anode 2 is installed on the lower part of the anode lifting device 1 , and the depth of the anode 2 inserted into the slag 3 is adjusted through the anode lifting device 1 . The lower part of the cathode lifting device 6 is equipped with a cathode 7, the cathode 7 is a round rod with two layers of composite structure inside and outside, the outer layer is wrapped with high temperature resistant cement, and the inside is a graphite rod; Make adjustments. The anode 2 is connected to the positive pole of the DC power supply of the DC power supply control device 8 through a wire, and the cathode is connected to the negative pole of the DC power supply of the DC power supply control device 8 through a wire.
使用时，将阳极升降装置1及阳极2安装于钢包5左上方位置，将阴极升降装置6及阴极7安设在钢包炉5右上方位置，通过阳极升降装置1将阳极2插入钢包5内的顶渣3中，控制阳极2在顶渣3中的位置，避免阳极2与钢液4接触。再通过阴极升降装置6将阴极7穿过顶渣3后插入钢液4中，并确保阴极7的导电部位不与顶渣3接触。然后由直流电源控制装置8控制和调节直流电源，通过阳极2与阴极7对熔渣钢液系统施加稳定的直流电场，从而实现既降低炉渣的氧化性，又防止顶渣改质过程中对钢液造成二次污染的目的。During use, the anode lifting device 1 and the anode 2 are installed on the upper left position of the ladle 5, the cathode lifting device 6 and the cathode 7 are installed on the upper right position of the ladle furnace 5, and the anode 2 is inserted into the ladle 5 by the anode lifting device 1 In the top slag 3 , the position of the anode 2 in the top slag 3 is controlled to avoid contact between the anode 2 and the molten steel 4 . Then the cathode 7 is inserted into the molten steel 4 through the top slag 3 through the cathode lifting device 6 , and it is ensured that the conductive part of the cathode 7 does not contact the top slag 3 . Then the DC power supply is controlled and adjusted by the DC power supply control device 8, and a stable DC electric field is applied to the slag molten steel system through the anode 2 and the cathode 7, so as to reduce the oxidation of the slag and prevent the steel from being damaged during the top slag modification process. The purpose of the liquid causing secondary pollution.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108359769A (en) * | 2018-02-13 | 2018-08-03 | 鞍钢股份有限公司 | Method and device for deoxidizing and alloying silicon oxide-containing material |
| CN108360023A (en) * | 2018-02-13 | 2018-08-03 | 鞍钢股份有限公司 | Method and device for composite deoxidation alloying of aluminum and magnesium |
| CN108411065A (en) * | 2018-02-13 | 2018-08-17 | 鞍钢股份有限公司 | Method and device for manganese alloying by using manganese ore |
-
2014
- 2014-04-11 CN CN201420172926.4U patent/CN203807569U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108359769A (en) * | 2018-02-13 | 2018-08-03 | 鞍钢股份有限公司 | Method and device for deoxidizing and alloying silicon oxide-containing material |
| CN108360023A (en) * | 2018-02-13 | 2018-08-03 | 鞍钢股份有限公司 | Method and device for composite deoxidation alloying of aluminum and magnesium |
| CN108411065A (en) * | 2018-02-13 | 2018-08-17 | 鞍钢股份有限公司 | Method and device for manganese alloying by using manganese ore |
| CN108360023B (en) * | 2018-02-13 | 2020-06-23 | 鞍钢股份有限公司 | Method and device for composite deoxidation alloying of aluminum and magnesium |
| CN108359769B (en) * | 2018-02-13 | 2020-06-23 | 鞍钢股份有限公司 | A method and device for deoxidizing alloying with silicon oxide-containing material |
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