CN104406893B - Method for measuring dissolution speed of solid inclusion in slag - Google Patents
Method for measuring dissolution speed of solid inclusion in slag Download PDFInfo
- Publication number
- CN104406893B CN104406893B CN201410624238.1A CN201410624238A CN104406893B CN 104406893 B CN104406893 B CN 104406893B CN 201410624238 A CN201410624238 A CN 201410624238A CN 104406893 B CN104406893 B CN 104406893B
- Authority
- CN
- China
- Prior art keywords
- slag
- inclusion
- inclusion particles
- sample
- molten slag
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000002893 slag Substances 0.000 title claims abstract description 130
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000004090 dissolution Methods 0.000 title claims abstract description 35
- 239000007787 solid Substances 0.000 title claims abstract description 10
- 239000002245 particle Substances 0.000 claims abstract description 59
- 238000001816 cooling Methods 0.000 claims abstract description 19
- 238000005070 sampling Methods 0.000 claims abstract description 16
- 238000005272 metallurgy Methods 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 8
- 239000011261 inert gas Substances 0.000 claims abstract description 6
- 238000002844 melting Methods 0.000 claims abstract description 5
- 230000008018 melting Effects 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims abstract description 4
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 8
- 238000005485 electric heating Methods 0.000 claims description 8
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 7
- 239000011737 fluorine Substances 0.000 claims description 7
- 229910052731 fluorine Inorganic materials 0.000 claims description 7
- 239000011449 brick Substances 0.000 claims description 6
- 239000007789 gas Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 229910052742 iron Inorganic materials 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000013461 design Methods 0.000 abstract description 5
- 238000009628 steelmaking Methods 0.000 abstract description 4
- 238000005457 optimization Methods 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 description 19
- 239000010959 steel Substances 0.000 description 19
- 239000007788 liquid Substances 0.000 description 7
- 229910052593 corundum Inorganic materials 0.000 description 5
- 229910001845 yogo sapphire Inorganic materials 0.000 description 5
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 229910052681 coesite Inorganic materials 0.000 description 3
- 229910052906 cristobalite Inorganic materials 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 239000000377 silicon dioxide Substances 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 229910052682 stishovite Inorganic materials 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 229910052905 tridymite Inorganic materials 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000011819 refractory material Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 1
- 241001062472 Stokellia anisodon Species 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 229910001634 calcium fluoride Inorganic materials 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000010587 phase diagram Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000036962 time dependent Effects 0.000 description 1
Landscapes
- Investigating And Analyzing Materials By Characteristic Methods (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention discloses a method for measuring the dissolution speed of solid of solid inclusion in slag, and belongs to the technical field of metallurgy. The method comprises the following steps: (1) in an inert gas atmosphere, heating slag to a temperature 150 to 200 DEG C higher than the melting point of the slag to form molten slag, and then maintaining the temperature; (2) adding inclusion particles into the molten slag, and evenly stirring; (3) sampling the molten slag by a sampling device, and cooling the sample in a cooling table until the sample is completely cured to form a metallographic sample; (4) observing the metallographic sample by a metallographic microscope and a scanning electron microscope, analyzing and calculating the equivalent diameters, and drawing a curve that represents the relationship between the equivalent diameter and the time; (5) calculating the dissolution speeds of inclusion particles in corresponding slag systems according to the curve and formula. The provided method can visually, precisely, and rapidly measure the dissolution speed of typical inclusions in specific slag system, and thus provides important references for design and optimization of slag systems in the steel making process.
Description
Technical Field
The invention belongs to the technical field of metallurgy, and particularly relates to a method for measuring the dissolution rate of solid inclusions in molten slag.
Background
The removal of inclusions and their control is an important aspect of the steel industry, and the absorption and dissolution of inclusions by liquid slag is an important mode of inclusion removal.
For electroslag remelting by adopting a fluorine-containing slag system to smelt metal materials by means of resistance heat of the slag system, the process has the capability of removing inclusions in a consumable electrode, and is mainly used for absorbing and dissolving the inclusions by the fluorine-containing slag system for electroslag metallurgy. In the electroslag metallurgy process, after being melted in a high-temperature liquid slag pool, the consumable electrode can continuously form small molten drops to drip, the small molten drops can be fully contacted with liquid slag in the dripping process, the removal of inclusions in steel mainly occurs in the stage, the duration of the process is short, and how to quickly and effectively remove the inclusions in the steel is an important process influencing the quality of a final product. However, different slag systems have different absorption and dissolution capacities for inclusions in steel, and for many years, a plurality of metallurgists optimize the design of the slag systems by analyzing the content, type, size and the like of non-metallic inclusions in the steel after remelting by using different slag systems; firstly, in the process of adding slag under industrial production conditions, a lot of powder slag flies away to influence the slag charge components and influence the final analysis and judgment; secondly, the quantitative determination of non-metallic inclusions in steel is very difficult. Many researchers quantify inclusions in steel by a quantitative metallographic method, but very ideal metallographic samples are difficult to prepare, and the metallographic samples prepared in the research process are often interfered by external factors to influence the accuracy of results; furthermore, the inclusions in the final electroslag steel are mostly generated secondarily, which is mainly influenced by the oxygen content in the steel, which is related to the oxygen transfer from the outside atmosphere to the steel through the liquid slag.
In the aspect of controlling inclusions by a common steelmaking method, the method is mainly used for comprehensively adjusting the removing and controlling capacity of the slag system on the inclusions in the steel by optimizing the component areas of the slag system in a phase diagram, adjusting the alkalinity, melting temperature, viscosity and other common physical and chemical properties of the slag system and combining other operation means. However, no matter what steel making method, the rapid absorption and dissolution of inclusions by slag systems are important prerequisites for inclusion control.
In summary, at present, the research on the ability of controlling inclusions in steel by using a traditional slag system design method is limited, and particularly, at present, high-end materials (special steel or special alloy) are all prepared under a protective atmosphere, so that the interference of the external atmospheric environment is eliminated; under such conditions, the absorption and dissolution of inclusions in the steel by the slag system itself determines the inclusion content in the final steel. Therefore, a method is established, the dissolution rate of the slag system to the inclusions in the steel is researched, and the method has important significance for controlling the inclusions in the steel.
Disclosure of Invention
The invention aims to provide a method for measuring the dissolution rate of solid inclusions in slag, which comprises the steps of adding inclusion particles into the slag, sampling at different time intervals, cooling to prepare a metallographic sample, observing and analyzing to obtain a time-dependent change curve of the particle size or the dissolution rate, so as to rapidly and truly measure the dissolution rate of the solid inclusions in the slag, and provide an important reference basis for the design of a reasonable slag system.
The method for measuring the dissolution rate of the solid inclusions in the slag comprises the following steps:
1. under the condition of inert atmosphere, heating the slag to a temperature 150-200 ℃ higher than the melting point of the slag to form molten slag, and preserving heat for 10-15 min to fully homogenize the components of the molten slag;
2. adding the inclusion particles into the molten slag through a hopper, and stirring for 3-5 s to ensure that the inclusion particles are uniformly distributed in the molten slag;
3. respectively sampling in the molten slag through a sampler at different time periods; placing the taken slag sample on a cooling table, cooling to solidify, and then respectively preparing metallographic samples;
4. observing each prepared metallographic sample under a metallographic microscope and a scanning electron microscope, analyzing the shape and the size of the inclusion, converting the size of the inclusion into an equivalent diameter, and drawing a change curve of the equivalent diameter of the inclusion particles in the sample taken at different time points along with the time;
5. calculating the dissolution rate of the inclusion particles under the corresponding slag system components according to the change curve and a formula, wherein the formula is as follows:
wherein,the dissolution rate of the inclusion particles is expressed in μm.s-1R is the radius of the alumina particles in μm; t is time in units of s.
In the method, the addition amount of the inclusion particles is 1 (10-15) according to the weight ratio of the inclusions to the slag charge, and the particle size range of the inclusion particles is 250 +/-25 mu m.
In the method, the sampling time interval in the step 3 is 30-300 s, and the sampling time interval in each measurement is equal.
In the method, when the dissolution rate of the inclusion particles in the fluorine-containing slag system for electroslag metallurgy is measured, two electrodes are inserted into the slag to be electrified and form an electrified loop with the slag to simulate the thermodynamic conditions of the electroslag metallurgy process.
The inclusion particles selected by the method are alumina particles.
The cooling table is a flat plate with a barrel-shaped groove, and the material of the cooling table is pure iron or pure copper.
The device adopted in the steps 1-3 of the method comprises an electric heating furnace and a crucible, wherein the crucible is positioned in a furnace tube of the electric heating furnace, a refractory brick sleeve of the furnace tube is provided with an inflation tube and a charging opening, and a temperature thermocouple is inserted into the furnace tube from a lower flange of the electric heating furnace.
In the device, two electrodes are inserted into the crucible from the refractory brick sleeve of the furnace tube, and the two electrodes are connected with a power supply through leads.
The use method of the device comprises the following steps: filling inert gas into the furnace tube through the gas filling tube and keeping the inert gas in circulation, and then heating slag in the crucible to prepare slag; placing a hopper at a feeding port, and then adding inclusion particles through the hopper to ensure that the inclusion particles can be completely added into the molten slag; when a sample needs to be taken, the funnel is removed, a sampling device consisting of a molybdenum wire and a crucible is inserted into the slag pool from the charging opening to take a slag sample, and the slag sample is placed in the groove on the cooling platform after being taken out and is cooled.
When the dissolving rate of the inclusions in the fluorine-containing slag system for electroslag metallurgy is measured, a power supply is used for electrifying two electrodes, and an electrifying loop is formed by the electrified electrodes and the slag, so that the electroslag metallurgy process is simulated.
The method can intuitively, accurately and quickly measure the dissolution rate of the typical inclusions in the specific slag system, thereby providing an important reference basis for the design and optimization of the slag system in the steelmaking process.
Drawings
FIG. 1 is a schematic diagram of an apparatus according to an embodiment of the present invention; in the figure, 1, a power supply, 2, a lead, 3, a funnel, 4, an inflation tube, 5, a refractory brick sleeve, 6, a furnace cover, 7, a furnace body, 8, a furnace tube, 9, a crucible, 10, inclusion particles, 11, slag, 12, a heating body, 13, refractory materials, 14, a temperature thermocouple, 15, a lower flange, 16 and a gas cylinder;
FIG. 2 is a schematic diagram of a sampler according to an embodiment of the present invention; in the figure, 17, molybdenum wire, 18, sampling crucible;
FIG. 3 is a side view of FIG. 2;
FIG. 4 is a top view of FIG. 2;
FIG. 5 is a schematic view of a cooling stage according to an embodiment of the present invention;
FIG. 6 is a side cross-sectional view of a cooling table in an embodiment of the invention;
FIG. 7 is a graph showing the change of the equivalent diameter of the inclusion particle in example 1 of the present invention with time;
FIG. 8 is a graph showing the change of the equivalent diameter of the inclusion particle in example 2 of the present invention with time;
FIG. 9 is a graph showing the change of the equivalent diameter of the inclusion particles in example 3 of the present invention with time.
Detailed Description
The metallographic specimen used in the examples of the present invention was prepared according to the standard GB/T13298-91 or ASTM E3-01.
The method for analyzing the shape and size of the inclusion and converting the size into the equivalent diameter in the embodiment of the invention comprises the following steps: the area of the inclusions is firstly measured and calculated by Image-Pro Plus 6.0 software, and then the equivalent diameter is calculated according to the method of the equivalent circle diameter.
The metallographic microscope adopted in the embodiment of the invention is of an Axio Imager M2M type;
in the embodiment of the invention, the model of the scanning electron microscope is SSX-550;
the inert gas used in the examples of the present invention was argon.
The inclusion particles used in the examples of the present invention were alumina particles with a particle size range of 250. + -.25. mu.m.
Example 1
The structure of the device for dissolving the liquid slag is shown in figure 1, and comprises an electric heating furnace and a crucible 9; the electric heating furnace comprises a refractory brick sleeve 5, a furnace cover 6, a furnace body 7, a furnace tube 8, a heating body 12, a refractory material 13 and a lower flange 15; the crucible 9 is positioned in the furnace tube 8, the refractory brick sleeve 5 is provided with an inflation tube 4 and a charging hole, and the temperature thermocouple 14 is inserted into the furnace tube 8 from the lower flange 15;
a hopper 3 is arranged on the charging opening; the gas filling pipe 4 is connected with a gas bottle 16;
two electrodes are inserted into the crucible 9 from the firebrick sleeve 5 and are connected with a power supply 1 through a lead 2;
the structure of the cooling table is shown in fig. 5 and 6, and the cooling table is a flat plate with a barrel-shaped groove and is made of pure iron or pure copper;
the sampler structure is shown in fig. 2, 3 and 4 and comprises a molybdenum wire 17 and a sampling crucible 18 which are fixed together;
the method comprises the following steps:
1. under the condition of inert atmosphere, heating the slag to a temperature 150-200 ℃ higher than the melting point of the slag to form molten slag, and preserving heat for 10min to fully homogenize the components of the molten slag;
2. adding the inclusion particles into the molten slag through a hopper, and stirring for 3-5 s to ensure that the inclusion particles are uniformly distributed in the molten slag; the adding amount of the inclusion particles is 1:10 according to the weight ratio of the inclusions to the slag charge;
3. respectively sampling in the molten slag through a sampler at different time periods; placing the taken slag sample on a cooling table, cooling to solidify, and then respectively preparing metallographic samples; the sampling time interval is 300s, and the time interval of each measurement sampling is equal;
4. observing each prepared metallographic sample under a metallographic microscope and a scanning electron microscope, analyzing the shape and the size of the inclusion, converting the size of the inclusion into an equivalent diameter, and drawing a change curve of the equivalent diameter of the inclusion particles in the sample taken at different time points along with the time;
5. calculating the dissolution rate of the inclusion particles under the corresponding slag system components according to the change curve and a formula, wherein the formula is as follows:
wherein,the dissolution rate of the inclusion particles is expressed in μm.s-1R is the radius of the alumina particles in μm; t is time in units of s;
the selected slag is tundish slag which comprises 32.5 percent of CaO-35 percent of Al by weight percentage2O3-32.5%SiO2The temperature of the liquid slag in the two test temperatures is 1773K and 1823K respectively, and two samples are taken each time;
FIG. 7 is a graph showing the change of the equivalent diameter of the inclusion particles obtained in step 4 with time;
as can be seen, the size of the alumina particles decreased almost linearly with time and the dissolution rate increased with increasing temperature, with the dissolution rate at 1823K being about 2.1 times that at 1773K;
for spherical inclusion particles, the change in size over time can be given by:
wherein dr/dt is the dissolution rate of the inclusions, mu m/s;is the mass transfer coefficient in the slag, mu m/s;C i 、C b al in the slag/inclusion interface and in the slag, respectively2O3Concentration, mol/cm3；MIs Al2O3The molar mass of the particles, g/mol;is the density of alumina particles, g/cm3；
In the process of dissolving inclusions under the conditions of specific slag composition and specific temperature、C i AndC b the variation is small, so that the dissolution rate of inclusions will not vary greatly with time, i.e. exhibit the characteristic of a linear decrease in the size of the inclusion particles with increasing smelting time;
based on this, the following formula can be obtained:
wherein,is the original radius of the inclusion particles,rthe radius of the inclusion particles in the sample;
however, in the slag system of a specific composition, the viscosity of the slag decreases and the fluidity thereof increases with an increase in temperature, and Al thereof2O3The increase of the mass transfer coefficient in the slag leads to the rapid increase of the dissolution rate of the inclusions;
calculated under 1773K and 1823K conditionsAre respectively 0.0733 mu m.s-1And 0.1535 μm.s-1。
Example 2
The apparatus used was the same as in example 1; the difference lies in that: the material of the cooling table is pure iron or pure copper;
the method is the same as example 1, except that:
keeping the temperature of the molten slag for 15 min;
the adding amount of the inclusion particles is 1:15 according to the weight ratio of the inclusions to the slag charge;
the sampling time interval is 50 s;
the selected slag systems are two typical ladle slag, and the weight percentages of the components are respectively 46 percent of CaO and 46 percent of Al2O3-8%SiO2And 42% CaO-42% Al2O3-16%SiO2The temperature of the molten slag in the test temperature is 1773K;
the graph of the change in the equivalent diameter of the obtained inclusion particles with time is shown in fig. 8;
as can be seen, the SiO content in the slag2The increased content of alumina particles decreases the dissolution rate of the alumina particles, since with the SiO in the slag2Increase in content of slagIncreased viscosity, reduced fluidity, and reduced Al content2O3The mass transfer coefficient in the slag thus reduces its dissolution rate;
calculating two typical ladle slag under 1773K conditionAre respectively 0.4625 mu m.s-1And 0.3033 μm.s-1。
Example 3
The apparatus used was the same as in example 1;
the method is the same as example 1, except that:
keeping the temperature of the liquid slag for 13 min;
the adding amount of the inclusion particles is 1:12 according to the weight ratio of the inclusions to the slag charge;
the sampling time interval is 30 s;
the selected slag system is ladle slag and slag for electroslag metallurgy, and the weight percentages of the components are respectively 50 percent of CaO and 50 percent of Al2O3And 40% CaF2-30%CaO-30%Al2O3When the dissolution rate of the inclusion particles in the electroslag metallurgy slag is measured, two electrodes are electrified to form an electrified loop together with the slag, and the thermodynamic condition of the electroslag metallurgy process is simulated; the temperature of the slag in the test temperature is 1773K;
the graph of the change in the equivalent diameter of the obtained inclusion particles with time is shown in fig. 9;
as can be seen from the figure, at the same temperature, CaF is contained in the fluorine-containing slag for electroslag metallurgy2Is higher than that in ladle slag, and CaF2Can effectively improve the viscosity of the slag and enhance the fluidity of the slag, thereby increasing Al2O3Diffusion coefficient in slag, increasing its dissolution rate, and therefore, from this point of view, Al2O3In electroslag metallurgyThe dissolving rate in the fluorine-containing slag system is higher than that in the steel ladle slag and the tundish refining slag;
calculating to obtain the steel ladle slag and the slag for electroslag metallurgy under the condition of 1773KAre respectively 0.5357 mu m.s-1And 1.2167 μm.s-1。
Claims (2)
1. A method for measuring the dissolution rate of solid inclusions in molten slag is characterized by comprising the following steps:
(1) under the condition of inert atmosphere, heating the slag to a temperature 150-200 ℃ higher than the melting point of the slag to form molten slag, and preserving heat for 10-15 min to fully homogenize the components of the molten slag;
(2) adding the inclusion particles into the molten slag through a hopper, and stirring for 3-5 s to ensure that the inclusion particles are uniformly distributed in the molten slag; the addition amount of the inclusion particles is 1 (10-15) according to the weight ratio of the inclusions to the slag charge, and the particle size range of the inclusion particles is 250 +/-25 mu m;
(3) respectively sampling in the molten slag through a sampler at different time periods; placing the taken slag sample on a cooling table, cooling to solidify, and then respectively preparing metallographic samples; the cooling table is a flat plate with a barrel-shaped groove, and the material is pure iron or pure copper;
(4) observing each prepared metallographic sample under a metallographic microscope and a scanning electron microscope, analyzing the shape and the size of the inclusion, converting the size of the inclusion into an equivalent diameter, and drawing a change curve of the equivalent diameter of the inclusion particles in the sample taken at different time points along with the time;
(5) calculating the dissolution rate of the inclusion particles under the corresponding slag system components according to the change curve and a formula, wherein the formula is as follows:
wherein,the dissolution rate of the inclusion particles is expressed in μm.s-1R is the radius of the alumina particles in μm; t is time in units of s;
when the dissolution rate of inclusion particles in a fluorine-containing slag system for electroslag metallurgy is measured, two electrodes are inserted into molten slag to be electrified and form an electrified loop with the molten slag to simulate the thermodynamic conditions of the electroslag metallurgy process.
2. The method for measuring the dissolution rate of solid inclusions in slag according to claim 1, wherein the device used in the steps (1) - (3) comprises an electric heating furnace and a crucible, the crucible is positioned in a furnace tube of the electric heating furnace, a gas filling tube and a charging opening are arranged on a refractory brick sleeve of the furnace tube, and a temperature thermocouple is inserted into the furnace tube from a lower flange of the electric heating furnace; the using method of the device comprises the following steps: filling inert gas into the furnace tube through the gas filling tube and keeping the inert gas in circulation, and then heating slag in the crucible to prepare slag; placing a hopper at a feeding port, and then adding inclusion particles through the hopper to ensure that the inclusion particles can be completely added into the molten slag; when a sample needs to be taken, the funnel is removed, a sampling device consisting of a molybdenum wire and a crucible is inserted into the slag pool from the charging opening to take a slag sample, and the slag sample is placed in the groove on the cooling platform after being taken out and is cooled.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410624238.1A CN104406893B (en) | 2014-11-10 | 2014-11-10 | Method for measuring dissolution speed of solid inclusion in slag |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410624238.1A CN104406893B (en) | 2014-11-10 | 2014-11-10 | Method for measuring dissolution speed of solid inclusion in slag |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104406893A CN104406893A (en) | 2015-03-11 |
| CN104406893B true CN104406893B (en) | 2017-02-01 |
Family
ID=52644540
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410624238.1A Active CN104406893B (en) | 2014-11-10 | 2014-11-10 | Method for measuring dissolution speed of solid inclusion in slag |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104406893B (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105588781B (en) * | 2016-03-09 | 2018-05-04 | 东北大学 | A kind of device and method for measuring field trash rate of dissolution in metallurgy clinker |
| CN109270239A (en) * | 2017-07-13 | 2019-01-25 | 鞍钢股份有限公司 | Method for evaluating slag inclusion absorption capacity |
| CN109114981B (en) * | 2018-07-12 | 2020-01-07 | 东北大学 | Device and method for experimental study of high-temperature reaction of slag metal in metallurgical process |
| CN109298016B (en) * | 2018-08-24 | 2021-04-30 | 上海大学 | Experimental device for simulating iron layer of blast furnace hearth |
| CN110988015A (en) * | 2019-12-30 | 2020-04-10 | 重庆大学 | Hot wire method-based dynamic and interface behavior test method for dissolving solid oxide in molten slag |
| CN111398332A (en) * | 2020-03-23 | 2020-07-10 | 电子科技大学 | System and method for representing dissolution amount and dissolution rate of ceramic in liquid glass at high temperature |
| CN114252440A (en) * | 2021-12-31 | 2022-03-29 | 东北大学 | Contrast detection method for determining content of diboron trioxide in metallurgical slag system |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2535886C2 (en) * | 2010-03-05 | 2014-12-20 | ЛЁШЕ ГмбХ, Германия | Dressing of slags containing high-quality steels and iron for extraction of metals |
| CN103468965B (en) * | 2013-09-25 | 2015-04-15 | 安徽工业大学 | Preparation method for electro-slag remelting refining slag efficiently utilizing return slag |
-
2014
- 2014-11-10 CN CN201410624238.1A patent/CN104406893B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN104406893A (en) | 2015-03-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104406893B (en) | Method for measuring dissolution speed of solid inclusion in slag | |
| Dong et al. | Effect of slag on inclusions during electroslag remelting process of die steel | |
| Ren et al. | Influence of B2O3 on viscosity of high Ti-bearing blast furnace slag | |
| Yan et al. | Effect of slag compositions and additive on heat transfer and crystallization of mold fluxes for high-Al non-magnetic steel | |
| KR20110138145A (en) | Measuring probes for measuring and taking samples with a metal melt | |
| CN105588781B (en) | A kind of device and method for measuring field trash rate of dissolution in metallurgy clinker | |
| CN107064045A (en) | The assay method of oxygen content in a kind of composite material of silicon carbide | |
| CN104316439A (en) | Device and method for determining rheological properties of high-temperature metallurgy molten slag | |
| Shiau et al. | Effect of magnesium and aluminum oxides on fluidity of final blast furnace slag and its application | |
| CN108254234B (en) | Preparation method of stainless steel smelting process control standard sample | |
| Pan et al. | Melting features and viscosity of SiO2-CaO-MgO-Al2O3-FeO nickel slag in laterite metallurgy | |
| Dong et al. | Effect of MgO and SiO2 on surface tension of fluoride containing slag | |
| CN104569030A (en) | Inert gas fusion-heat conduction method for determining content of nitrogen in iron-chromium-aluminum metal fibers | |
| CN109114981B (en) | Device and method for experimental study of high-temperature reaction of slag metal in metallurgical process | |
| CN102247902B (en) | Double-crucible experimental apparatus for high-temperature experiment | |
| Ksiazek et al. | Measurement of metal temperature during tapping of an industrial FeSi furnace | |
| CN112595715A (en) | High-temperature slag structure characterization method | |
| CN113466322B (en) | Method for detecting pollution degree of contact material for high-purity aluminum smelting on aluminum liquid | |
| CN106378526B (en) | A kind of experimental provision can be used for high heating rate Diffusion Welding | |
| Song et al. | Lab-scale Experiment and Industrial Test for Direct Alloying with the Ferrosilicon-MoO3 Self-reducing Briquette | |
| CN112179802B (en) | Test method and system for measuring slag volatilization performance in laboratory | |
| CN117233043B (en) | Method for determining cooperative wetting behavior of iron-slag on surface of carbonaceous material and application of method | |
| CN111505235B (en) | Method for measuring interface oxygen transfer rate in process of smelting high-temperature alloy | |
| CN117007590A (en) | Method and device for observing scrap steel melting | |
| CN117660714B (en) | Device and method for researching solid-liquid competition reduction of molten iron oxide of carbon |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |