CN104032069A - Device for simultaneously sampling and measuring temperature, converter used for steelmaking and method for converter blowing - Google Patents
Device for simultaneously sampling and measuring temperature, converter used for steelmaking and method for converter blowing Download PDFInfo
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- CN104032069A CN104032069A CN201410275687.XA CN201410275687A CN104032069A CN 104032069 A CN104032069 A CN 104032069A CN 201410275687 A CN201410275687 A CN 201410275687A CN 104032069 A CN104032069 A CN 104032069A
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Abstract
The invention provides a device for simultaneously sampling and measuring temperature, a converter used for steelmaking and a method for converter blowing. The device for simultaneously sampling and measuring temperature comprises a stand, a temperature measuring probe and a sampling probe arranged on the stand. By utilizing the device for simultaneously sampling and measuring temperature, temperature measurement and sampling can be realized simultaneously with one action, temperature measuring and sampling analysis results can be ensured to aims to molten steel at the same time point, the temperature measuring and sampling time can be greatly saved, the efficiency can be improved, and the device has industrial application prospect.
Description
Technical field
The present invention relates to a kind of device that simultaneously samples thermometric and comprise the essemer converter of the described device that simultaneously samples thermometric and the method that adopts this converter to bessemerize.
Background technology
In order to evaluate the performances such as temperature, component and uniformity thereof of relevant molten steel, in process of production, it is very important in a planned way molten steel being sampled.The basic premise that assurance is made correct judgement to the temperature of molten steel and component is that to obtain time of analytical results short as far as possible from being sampled to.After having sampled, before steel melting furnace, on-the site analysis trends towards using spectroscopic analysis so that the component in sample is analyzed, and its object is to shorten as far as possible the steel analysis time, and accurate instruction is smelted production process.Yet, the whether fast and accurate speed that depends primarily on sampling of stokehold spectroscopic analysis.If sample rate is slow, then the analytical results of accurate instrument does not have reference value yet.Therefore, develop easy, sampler is the key of spectroscopic analysis success before steel melting furnace fast.
Take converter steelmaking as example, and at present, before Converter, thermometric sampling mode is temperature probe and sampling probe to be installed in turn on same metal connector to realize the thermometric of molten steel and sampling, and temperature measuring equipment will complete twice action and could realize thermometric and sampling like this.At present, the converter steelmaking cycle is probably about 30 minutes, pure oxygen blow duration is probably in 15 minutes, remove processes such as converting iron, tapping, measuring temperature of converter accounts for 5 minutes sample time approximately, so long thermometric is to the wasting of molten steel heat sample time, is again the huge delay to whole steel-making rhythm, is unfavorable for the rationalization tissue of STEELMAKING PRODUCTION.Therefore, must try every possible means to reduce the time of thermometric sampling in convertor steelmaking process.
Summary of the invention
To the object of the invention is the longer defect of time of molten steel being carried out to thermometric and sampling cost in order overcoming in current smelting molten steel process, and a kind of device that samples thermometric new time to be provided and to comprise the essemer converter of the described device that simultaneously samples thermometric and the method that adopts this converter to bessemerize.
The invention provides a kind of device that simultaneously samples thermometric, wherein, described device comprises frame and is arranged on temperature probe and the sampling probe in described frame.
The present invention also provides a kind of essemer converter, described converter comprises body of heater and for sampling the device of thermometric, wherein, described is the above-mentioned device that simultaneously samples thermometric for sampling the device of thermometric, and the described device that simultaneously samples thermometric samples thermometric for the material in body of heater simultaneously.
In addition, the present invention also provides a kind of method of bessemerizing, and the method comprises molten iron is added in the body of heater of above-mentioned converter and blown, and in described converting process, adopts the described device that simultaneously samples thermometric to sample thermometric.
The device of thermometric that simultaneously samples provided by the invention is as long as one-off just can be realized thermometric and sampling simultaneously, not only can guarantee that thermometric and sampling analysis result are all molten iron or the molten steel for same time point, but also can greatly save the time that thermometric samples, improve efficiency, had prospects for commercial application.
A preferred embodiment of the invention, in described process of bessemerizing, when described molten iron is low silicon vanadium-bearing hot metal, and before described blowing when adding silicon-dioxide in described low silicon vanadium-bearing hot metal, realize at the same time on the basis of thermometric and sampling, can also improve the oxidation ratio of vanadium in molten iron and improve v slag grade, having prospects for commercial application.
Other features and advantages of the present invention partly in detail are described the embodiment subsequently.
Accompanying drawing explanation
Accompanying drawing is to be used to provide a further understanding of the present invention, and forms a part for specification sheets, is used from explanation the present invention, but is not construed as limiting the invention with embodiment one below.In the accompanying drawings:
Fig. 1 is the structural representation of the device of while thermometric sampling provided by the invention.
Description of reference numerals
1-frame; 2-metal core wire; 3-temperature probe; 4-sampling probe.
Embodiment
Below the specific embodiment of the present invention is elaborated.Should be understood that, embodiment described herein only, for description and interpretation the present invention, is not limited to the present invention.
As shown in Figure 1, the device that simultaneously samples thermometric provided by the invention comprises frame 1 and is arranged on temperature probe 3 and the sampling probe 4 in described frame.
Due in device provided by the invention, temperature probe 3 and sampling probe 4 are installed in same frame 1 simultaneously, in the time need to analyzing the temperature of molten iron or molten steel and component, the temperature probe of this device 3 and sampling probe 4 are immersed in molten iron or molten steel, the temperature of molten iron or molten steel directly feeds back to temperature indicator by temperature probe 3, and the component of molten iron or molten steel transfers to spectrum analyzer after sampling by sampling probe 4 and analyzes acquisition.
According to the device that samples thermometric provided by the invention simultaneously, the quantity of described temperature probe 3 and sampling probe 4 can reasonably be selected according to practical situation, for example, when the timed interval between molten iron or molten steel two sub-samplings is grown (being longer than primary sample required time), a temperature probe 3 and a sampling probe 4 can be set; And when timed interval shorter (being shorter than primary sample required time) between molten iron or molten steel two sub-samplings, a temperature probe 3 and branched sampling probe 4 can be set, wherein, 3 pairs of molten iron of temperature probe or liquid steel temperature are monitored continuously, and every sub-sampling is used different sampling probes instead, after treating that all sampling probes 4 are all filled sample, then these sample unifications are carried out to spectroscopic analysis processing.Particularly preferably, the quantity of described temperature probe 3 is one, and the quantity of described sampling probe 4 is that 1-3 props up.
For the temperature of molten iron or molten steel is reflected intuitively, the described device that simultaneously samples thermometric also comprises temperature indicator.As shown in Figure 1, described temperature indicator is connected with temperature probe 3 by metal core wire 2.
According to the device that samples thermometric provided by the invention simultaneously, described temperature probe 3 and sampling probe 4 can be set directly in frame 1, also metal connector can be first set in described frame, and then described temperature probe 3 and sampling probe 4 are fixed on described metal connector.Described metal connector can be the element of existing various fixedly temperature probes and sampling probe, and its concrete structure is known to the skilled person, and therefore not to repeat here.
The device that simultaneously samples thermometric provided by the invention, preferably, described device also comprises the oxygen determination activity probe being arranged in described frame 1, as long as one-off just can be realized thermometric, sampling and oxygen determination activity simultaneously, has further improved efficiency like this.In addition, the quantity of described oxygen determination activity probe can reasonably be selected according to practical situation, for example, when the timed interval between molten iron or molten steel two sub-samplings is grown (being longer than primary sample required time), an oxygen determination activity probe can be set; And when timed interval shorter (being shorter than primary sample required time) between molten iron or molten steel two sub-samplings, branched oxygen determination activity probe can be set, wherein, every sub-sampling is used different oxygen determination activity probes instead, after treating that all oxygen determination activity probes are all filled sample, then these sample unifications are carried out to oxygen activity analyzing and processing.Particularly preferably, the quantity of described oxygen determination activity probe is that 1-2 props up.
Because the main improvement that samples the device of thermometric provided by the invention is to arrange temperature probe and sampling probe in frame and oxygen determination activity probe is optionally set simultaneously simultaneously simultaneously, so that they the two or three can for example work independently of one another simultaneously, therefore for the structure of frame and the annexation of frame and temperature probe and sampling probe, be not particularly limited, if temperature probe and sampling probe and the oxygen determination activity probe that optionally comprises can together be arranged in frame and also work independently of one another.Described temperature probe, sampling probe, oxygen determination activity probe can be respectively existing various temperature probe, sampling probe and oxygen determination activity probe.
For example, described temperature probe can be thermopair for the existing various temperature-sensitive unit that can measure temperature conventionally, and the concrete structure of described thermopair is known to the skilled person, and therefore not to repeat here.In addition, because the smelting process of molten iron or molten steel need to be carried out conventionally at higher temperature (being generally 1200-1800 ℃), for guarantee thermometric operation continue carry out, need described thermopair to there is good resistance to elevated temperatures, therefore, preferably, the model of described thermopair is one or more in S type thermopair (platinum rhodium 10-platinum thermocouple), N-type thermopair (nicrosil nisil thermocouple) and T-shaped thermopair (copper-CopperNickel thermocouple), can guarantee that so described thermopair still can normally use under the above-mentioned smelting temperature of molten iron or molten steel.
Described sampling probe 3 can be the existing various sampling units that can take out molten steel, for example, it can be type non-filtering sampling probe, also can be filtering type sampling probe, be preferably filtering type sampling probe, can avoid the impact of slag in sampling process like this, the result that assurance is carried out follow-up measurement by the sample of taking-up is more accurate.In addition, as mentioned above, the smelting process of molten iron or molten steel need to be carried out conventionally at higher temperature (being generally 1200-1800 ℃), therefore, in order to guarantee normally carrying out of sampling operation, the material of described sampling probe need to have good resistance to elevated temperatures conventionally, for example, can be aluminium or pottery.
Essemer converter provided by the invention comprises body of heater and for sampling the device of thermometric, wherein, described is the above-mentioned device that simultaneously samples thermometric for sampling the device of thermometric, and the described device that simultaneously samples thermometric samples thermometric for the material in body of heater simultaneously.
As previously mentioned, main improvements of the present invention are the set-up mode of temperature probe 3, sampling probe 4 and the oxygen determination activity probe that optionally comprises to redistribute, and the structure of body of heater and simultaneously sample the device of thermometric and the annexation of body of heater can be carried out with reference to prior art, for example, the oxygen determination activity probe that samples temperature probe, the sampling probe of the device of thermometric simultaneously and optionally comprise can be fixedly supported in frame, and wherein one or more stretched in body of heater.The described frame that simultaneously samples the device of thermometric can be fixed on body of heater or be fixed on the ground, for temperature probe described in fixed support and sampling probe and the oxygen determination activity probe that optionally comprises.
In addition, method of bessemerizing provided by the invention comprises molten iron is added in the body of heater of above-mentioned converter and blown, adopts the described device that simultaneously samples thermometric to sample thermometric in described converting process.
The present invention is not particularly limited the kind of described molten iron, for example, can be low silicon vanadium-bearing hot metal.After blowing, v element in described low silicon vanadium-bearing hot metal is oxidized and removed.In described low silicon vanadium-bearing hot metal, preferably, the gross weight of described low silicon vanadium-bearing hot metal of take is benchmark, in described low silicon vanadium-bearing hot metal, the content of C is 4.1-4.6 % by weight, content≤0.15 % by weight of Si, the content of Mn is 0.2-0.5 % by weight, the content of V is 0.25-0.35 % by weight.In addition, the temperature of described low silicon vanadium-bearing hot metal is preferably 1280-1320 ℃.
When described molten iron is low silicon vanadium-bearing hot metal, preferably, before method of bessemerizing provided by the invention is also included in described blowing, in described low silicon vanadium-bearing hot metal, add silicon-dioxide, can promote the oxidation of vanadium in molten iron like this, thereby the oxidation ratio that improves vanadium also improves v slag grade, and then be more conducive to follow-up these vanadium slags are carried out further processing treatment and obtain vanadium goods.
From the angle of being easy to get property of raw material, consider, described silicon-dioxide preferably adds with the form of quartz sand.Described quartz sand is a kind of with SiO
2silicate minerals for main component.The SiO of preferably, contain in described quartz sand>=96 % by weight
2, all the other are Fe
2o
3, be so not only conducive to the raising of vanadium oxidation ratio in molten iron, but also can avoid further introducing unwanted impurity in converting process.
The present invention is not particularly limited the granularity of described quartz sand, particularly preferably, the granularity of described quartz sand is 1-3mm, the granularity of described quartz sand is controlled in above-mentioned preferred scope and not only can guarantees that they have good melting properties further to improve the oxidation ratio of vanadium in the process of bessemerizing, but also be difficult for flying away, be convenient to feed in raw material.
In the present invention, described granularity refers to the maximum linear distance between any two differences on particle.For example, when described particle is while being spherical, described granularity refers to its diameter.
The present invention is not particularly limited the consumption of described quartz sand, it should be selected according to the consumption of described low silicon vanadium-bearing hot metal conventionally, for example, and with respect to the described low silicon vanadium-bearing hot metal of 1 ton, the consumption of described quartz sand can be 1-3kg, is preferably 1.5-2.5kg.
In described converting process, conventionally by oxygen rifle, to being blown into oxygen in converter, blow.By oxygen blast, can be oxidized the elements such as carbon in described low silicon vanadium-bearing hot metal, vanadium, silicon, manganese, remove gas and inclusion, and make molten iron homogeneous heating.In the present invention, there is no particular limitation for described oxygen blown mode, the various oxygen blast modes that can be known to the skilled person, and for example, top blast, bottom blowing and top and bottom complex blowing, be preferably top blast.
The present invention is not particularly limited oxygen blown condition, but considers from combined factors such as the raising of vanadium oxidation ratio and oxygen blast costs, and preferably, oxygen blast intensity is 1.8-2.2Nm
3/ mint molten iron, oxygen blow duration is 3-7min; More preferably, oxygen blast intensity is 1.9-2.1Nm
3/ mint molten iron, oxygen blow duration is 4-6min.In this specification sheets, term " oxygen blast intensity " used refers to the interior blowing oxygen quantity in blowing molten iron per ton of unit time, and its unit is Nm
3/ mint molten iron.
Below will describe the present invention by embodiment.
In following examples and comparative example:
V slag grade V
2o
5refer to V in vanadium slag
2o
5weight percentage, it is measured by the method for stipulating in GB/T28293-2012 < < iron and steel ground-slag > >.
Total amount * 100% of v element in the low silicon vanadium-bearing hot metal of total amount ÷ of oxidation ratio=Vanadium in Vanadium Residue element of vanadium.
Embodiment 1
This embodiment is for illustrate the device that samples thermometric provided by the invention and essemer converter and the method for bessemerizing simultaneously.
This embodiment time used, sample thermometric device structure as shown in Figure 1, comprise frame 1 and be arranged on a S type thermopair 3 and the filtering type sampling probe 4 in described frame 1, S type thermopair 3 is connected with temperature indicator by metal core wire 2.
Certain 200t of factory converter extracting vanadium, half steel tap 210t.Low silicon vanadium-bearing hot metal has following composition: C:4.3 % by weight, Si:0.08 % by weight, Mn:0.25 % by weight, V:0.3 % by weight, and all the other are Tfe, the temperature of low silicon vanadium-bearing hot metal is 1280 ℃.The SiO that quartz sand contains 98 % by weight
2, all the other are Fe
2o
3, and the granularity of quartz sand is 1-3mm.Above-mentioned low silicon vanadium-bearing hot metal is poured in converter, before blowing, by feed bin, in converter, add above-mentioned quartz sand 315kg, then carry out oxygen blast vanadium extraction, oxygen blast intensity is 2.0Nm
3/ mint molten iron, oxygen blow duration is 5.5min, constantly adopts the above-mentioned device that simultaneously samples thermometric to sample and thermometric in converting process, when the content of each component and the temperature of molten iron touch the mark in molten iron, carries out the separation of slag iron, obtains half steel and vanadium slag.V slag grade V
2o
5reached 18.26%, the oxidation ratio of vanadium has reached 82.3%.Because the device of thermometric that samples provided by the invention is as long as one-off just can be realized thermometric and sampling simultaneously simultaneously, not only can guarantee that thermometric and sampling analysis result are all the molten steel for same time point, but also can greatly save the time that thermometric samples, improved efficiency.
Embodiment 2
This embodiment is for illustrate the device that samples thermometric provided by the invention and essemer converter and the method for bessemerizing simultaneously.
This embodiment time used, sample thermometric device structure as shown in Figure 1, comprise frame 1 and be arranged on a S type thermopair 3 and the filtering type sampling probe 4 in described frame 1, S type thermopair 3 is connected with temperature indicator by metal core wire 2.
Certain 200t of factory converter extracting vanadium, half steel tap 215t.Low silicon vanadium-bearing hot metal has following composition: C:4.4 % by weight, Si:0.14 % by weight, Mn:0.31 % by weight, V:0.34 % by weight, and all the other are Tfe, the temperature of low silicon vanadium-bearing hot metal is 1320 ℃.The SiO that quartz sand contains 97 % by weight
2, all the other are Fe
2o
3, and the granularity of quartz sand is 1-3mm.Above-mentioned low silicon vanadium-bearing hot metal is poured in converter, before blowing, by feed bin, in converter, add above-mentioned quartz sand 220kg, then carry out oxygen blast vanadium extraction, oxygen blast intensity is 2.1Nm
3/ mint molten iron, oxygen blow duration is 5min, constantly adopts the above-mentioned device that simultaneously samples thermometric to sample and thermometric in converting process, when the content of each component and the temperature of molten iron touch the mark in molten iron, carries out the separation of slag iron, obtains half steel and vanadium slag.V slag grade V
2o
5reached 17.85%, the oxidation ratio of vanadium has reached 81.43%.Because the device of thermometric that samples provided by the invention is as long as one-off just can be realized thermometric and sampling simultaneously simultaneously, not only can guarantee that thermometric and sampling analysis result are all the molten steel for same time point, but also can greatly save the time that thermometric samples, improved efficiency.
Embodiment 3
This embodiment is for illustrate the device that samples thermometric provided by the invention and essemer converter and the method for bessemerizing simultaneously.
This embodiment time used, sample thermometric device structure as shown in Figure 1, comprise frame 1 and be arranged on a S type thermopair in described frame 13, filtering type sampling probe 4 and an oxygen determination activity probe (not shown), S type thermopair 3 is connected with temperature indicator by metal core wire 2.
Certain 200t of factory converter extracting vanadium, half steel tap 208t.Low silicon vanadium-bearing hot metal has following composition: C:4.5 % by weight, Si:0.06 % by weight, Mn:0.20 % by weight, V:0.25 % by weight, and all the other are Tfe, the temperature of low silicon vanadium-bearing hot metal is 1290 ℃.The SiO that quartz sand contains 96 % by weight
2, all the other are Fe
2o
3, and the granularity of quartz sand is 1-3mm.Above-mentioned low silicon vanadium-bearing hot metal is poured in converter, before blowing, by feed bin, in converter, add above-mentioned quartz sand 500kg, then carry out oxygen blast vanadium extraction, oxygen blast intensity is 1.9Nm
3/ mint molten iron, oxygen blow duration is 6min, constantly adopts that the above-mentioned device that simultaneously samples thermometric samples, thermometric oxygen determination activity in converting process, and the content of each component in molten iron is, the temperature of molten iron and oxygen activity while touching the mark, carry out slag iron separated, obtain half steel and vanadium slag.V slag grade V
2o
5reached 19.02%, the oxidation ratio of vanadium has reached 83.5%.Because the device of thermometric that samples provided by the invention is as long as one-off just can be realized thermometric, sampling and oxygen determination activity simultaneously simultaneously, not only can guarantee that thermometric, sampling and oxygen determination activity result are all the molten steel for same time point, but also can greatly save time, improved efficiency.
Embodiment 4
This embodiment is for illustrate the device that samples thermometric provided by the invention and converter and the method for bessemerizing simultaneously.
According to the method for embodiment 1, low silicon vanadium-bearing hot metal is blown, different, the granularity of quartz sand used is 8-10mm, carries out the separation of slag iron after finishing blowing, obtains half steel and vanadium slag.V slag grade V
2o
5reached 17.65%, the oxidation ratio of vanadium has reached 80.6%.Because the device of thermometric that samples provided by the invention is as long as one-off just can be realized thermometric and sampling simultaneously simultaneously, not only can guarantee that thermometric and sampling analysis result are all the molten steel for same time point, but also can greatly save the time that thermometric samples, improved efficiency.
As can be seen from the above results, the device of thermometric that simultaneously samples provided by the invention is as long as one-off just can be realized thermometric and sampling simultaneously, not only can guarantee that thermometric and sampling analysis result are all the molten steel for same time point, but also can greatly save the time that thermometric samples, improve efficiency, had prospects for commercial application.In addition, in described process of bessemerizing, when described molten iron is low silicon vanadium-bearing hot metal, and before described blowing when adding silicon-dioxide in described low silicon vanadium-bearing hot metal, realize at the same time on the basis of thermometric and sampling, can also improve the oxidation ratio of vanadium in molten iron and improve v slag grade, having prospects for commercial application.
More than describe the preferred embodiment of the present invention in detail; but the present invention is not limited to the detail in above-mentioned embodiment, within the scope of technical conceive of the present invention; can carry out multiple simple variant to technical scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition each the concrete technical characterictic described in above-mentioned embodiment, in reconcilable situation, can combine by any suitable mode.For fear of unnecessary repetition, the present invention is to the explanation no longer separately of various possible array modes.
In addition, between various embodiment of the present invention, also can carry out arbitrary combination, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (11)
1. sample a device for thermometric simultaneously, it is characterized in that, described device comprises frame and is arranged on temperature probe and the sampling probe in described frame.
2. device according to claim 1, wherein, described temperature probe is thermopair.
3. device according to claim 1, wherein, described sampling probe is filtering type sampling probe.
4. according to the device described in any one in claim 1-3, wherein, described device also comprises the oxygen determination activity probe being arranged in described frame.
5. an essemer converter, described converter comprises body of heater and for sampling the device of thermometric, it is characterized in that, described is the device that samples thermometric described in claim 1-4 any one time for sampling the device of thermometric, and the described device that simultaneously samples thermometric samples thermometric for the material in body of heater simultaneously.
6. essemer converter according to claim 5, wherein, described temperature probe and sampling probe and the oxygen determination activity probe optionally comprising stretch in body of heater, and described frame is for temperature probe described in fixed support and sampling probe and the oxygen determination activity probe that optionally comprises.
7. a method of bessemerizing, the method comprises molten iron is added in the body of heater of the converter described in claim 5 or 6 and blown, and in described converting process, adopts the described device that simultaneously samples thermometric to sample thermometric.
8. method according to claim 7, wherein, described molten iron is low silicon vanadium-bearing hot metal, and in described low silicon vanadium-bearing hot metal, adds silicon-dioxide before described blowing.
9. method according to claim 7, wherein, in described low silicon vanadium-bearing hot metal, the content of C is 4.1-4.6 % by weight, content≤0.15 % by weight of Si, the content of Mn is 0.2-0.5 % by weight, the content of V is 0.25-0.35 % by weight.
10. method according to claim 8 or claim 9, wherein, described silicon-dioxide adds with the form of quartz sand, and the granularity of described quartz sand is 1-3mm.
11. methods according to claim 10, wherein, with respect to the described low silicon vanadium-bearing hot metal of 1 ton, the consumption of described quartz sand is 1-3kg.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410275687.XA CN104032069A (en) | 2014-06-19 | 2014-06-19 | Device for simultaneously sampling and measuring temperature, converter used for steelmaking and method for converter blowing |
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| CN201410275687.XA CN104032069A (en) | 2014-06-19 | 2014-06-19 | Device for simultaneously sampling and measuring temperature, converter used for steelmaking and method for converter blowing |
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| CN104032069A true CN104032069A (en) | 2014-09-10 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109897936A (en) * | 2019-04-29 | 2019-06-18 | 连铸 | A kind of detection system continuously detecting liquid steel temperature and composition for pneumatic steelmaking |
| CN114252302A (en) * | 2021-11-22 | 2022-03-29 | 五冶集团上海有限公司 | Online temperature measurement and gas sampling device and method for chute area of dry quenching furnace |
| CN114451934A (en) * | 2022-03-03 | 2022-05-10 | 张高高 | Clinical biopsy sampling device that uses of medical oncology |
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| CN87208787U (en) * | 1987-06-06 | 1988-02-17 | 北京钢铁学院 | Multifunctional gaging head for melting steel |
| CN87213284U (en) * | 1987-09-14 | 1988-09-14 | 北京钢铁学院 | Mini multi function vacuum induction furnace |
| CN103397133A (en) * | 2013-07-11 | 2013-11-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for protecting converter with vanadium slag |
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| CN87208787U (en) * | 1987-06-06 | 1988-02-17 | 北京钢铁学院 | Multifunctional gaging head for melting steel |
| CN87213284U (en) * | 1987-09-14 | 1988-09-14 | 北京钢铁学院 | Mini multi function vacuum induction furnace |
| CN103397133A (en) * | 2013-07-11 | 2013-11-20 | 攀钢集团攀枝花钢铁研究院有限公司 | Method for protecting converter with vanadium slag |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109897936A (en) * | 2019-04-29 | 2019-06-18 | 连铸 | A kind of detection system continuously detecting liquid steel temperature and composition for pneumatic steelmaking |
| CN114252302A (en) * | 2021-11-22 | 2022-03-29 | 五冶集团上海有限公司 | Online temperature measurement and gas sampling device and method for chute area of dry quenching furnace |
| CN114451934A (en) * | 2022-03-03 | 2022-05-10 | 张高高 | Clinical biopsy sampling device that uses of medical oncology |
| CN114451934B (en) * | 2022-03-03 | 2023-06-27 | 张高高 | Clinical biopsy sampling device that uses of oncology |
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