CN103611921A - Slag skimmer production method - Google Patents
Slag skimmer production method Download PDFInfo
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- CN103611921A CN103611921A CN201310644765.4A CN201310644765A CN103611921A CN 103611921 A CN103611921 A CN 103611921A CN 201310644765 A CN201310644765 A CN 201310644765A CN 103611921 A CN103611921 A CN 103611921A
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Abstract
The invention discloses a slag skimmer production method. The slag skimmer production method comprises the steps of adding a slagging agent and a ferrosilicon block in molten copper; placing a cooling water pipe in a pouring model, enabling a liquid cold state medium and a composite solid cooling medium to pass through the cooling water pipe; using the molten copper to pour a cooling plate base body, and pouring the middle of the cooling water pipe in the base body; letting the pouring model lie horizontally in the pouring process, performing modeling on one heavier side of a riser, and jacking up one side of the model riser after model mould assembling; adopting an upper layer inner flow gate and a lower layer inner flow gate to perform step pouring, and forming sequential solidification. Deformation or local melting through of the cooling water pipe in the casting process can be effectively avoided, air gaps between the cooling plate base body and the cooling water pipe are avoided, complete remelting and complete recrystallization are avoided, micro melting of the outer surface of the cooling water pipe is achieved precisely, and the cooling effect of a cooling plate is improved; the mechanical property of a copper matrix is strengthened; the temperature of the surface of a slag skimmer refractory material is reduced, the temperature of a service environment of a slag skimmer is reduced indirectly, and the service life of the slag skimmer is prolonged.
Description
Technical field
The present invention relates to a kind of production method of skimming tool, specifically relate to a kind of cooling device that is applied to metallurgy industry, belong to iron and steel metallurgical industry technical field.
Background technology
Skimming tool is the device that promotes that high-temperature liquid furnace slag (1400-1500 ℃) in blast furnace casting process, molten iron (1400-1600 ℃) are effectively separated.On skimming tool, connect main trough of blast furnace, under connect iron runner, bypass connects slag runner, on cast house, in core node position, is also the unique node that guarantees that slag iron is effectively separated, to blast furnace casting process stable, direct motion is very important.From broadly, skimming tool is by front groove, Sha Ba, baffle plate (being also called lintel or large lock), passageway, The Small Well (molten iron outlet, connects the Zhigou that flows to hot-metal bottle) and put residual iron duct composition.Current, many scholars by baffle plate referred to as skimming tool.The chief component of skimming tool is the refractory material of different performance and the high temperature box hat in outside of inner side.Skimming tool is subject to the chemical erosion with slag of washing away of high temperature liquid iron for a long time, and its Service Environment is very severe.
In actual production process, skimming tool is suspended in the sow that has been full of liquid slag and molten iron, between its bottom and sow, has a passage, i.e. above-mentioned passageway, the slag in sow with molten iron because of different (density 3.0 t/m of slag of its density
3, the density 7.0t/m of molten iron
3), natural layering.For slag, because density is little, float over molten iron above, by skimming tool block after then flow to slag runner; For molten iron, below density sinks to greatly, can, by the gap between skimming tool and sow (being passageway mentioned above), flow to iron runner.Accordingly, skimming tool completes the slag of high-temperature liquid state, the shunting of molten iron.
In blast furnace casting process, skimming tool is related to stable, the direct motion of blast furnace operating, very important in the effect of blast furnace ironmaking process, and skimming tool is under arms in process, the lasting destruction of mainly standing following several factors: the mechanical erosion of (1) high temperature liquid iron; (2) the slag chemical erosion under hot conditions; (3) blast furnace intermittent tapping, the thermal shock that causes while slagging tap are corroded.Three kinds of factor alternating actions, strengthen mutually, greatly reduce the service life of skimming tool.Yet along with the development of modern blast furnace technology, blast furnace presents obvious the Enlargement Tendency, the time of tapping a blast furnace, slag tap constantly extends, be accompanied by mechanical erosion lasting under hot conditions and chemical erosion, the Service Environment of skimming tool further worsens, and has aggravated the destruction of skimming tool.When daily blast furnace flushing and casting, often because skimming tool work is undesired, directly have influence on blast furnace and produce, upset the normal rhythm of production of blast furnace.Because skimming tool service life does not reach requirement, cause stokehold technique damping down asynchronous with facilities plan damping down, cause high without plan delay ratio, consume high, yield poorly, therefore the technological improvement of skimming tool is become the most important thing of blast furnace.
The main forms of skimming tool damage be baffle plate bottom wash away erosions, middle resistance to material ftractures.Until after the bottom of baffle plate washed away in a large number, slag from cracking by and enter into follow-up trough, lose skimming function.For avoiding this situation, scene need to be keeped in repair skimming tool frequently, has both increased cost of labor, Material Cost, has also limited furnace processor, has caused larger economic loss to ironmaking enterprise.How further to improve the skimming tool life-span, become the urgent technical barrier that vast ironmaking worker faces.
In view of the analysis to skimming tool Service Environment, its maximum destructive factor can ascribe 2 points to: (1) high temperature.Hot conditions and consequent thermal stress continue to be destroyed resistance to material, and the easy recurring structure of resistance to material peels off, the continuing to peel off and will jeopardize the service life of resistance to material of resistance to material.On the other hand, when high temperature intermittently occurs, by skimming tool being formed to strong thermal shock, corrode, accelerated peeling off of the resistance to material of skimming tool; (2) chemical erosion.Because slag composition is similar to resistance to material component, according to " similar mixing " principle, material is in the process of slag contact, easily generate the chemical substance of low melting point, the chemical substance of low melting point liquefies rapidly and enters slag when high temperature furnace slag washes away, and " melting loss " reaction has now occurred resistance to material, and hot environment has further been impelled the carrying out of melting loss reaction, along with melting loss reaction continues to carry out, the process of chemical attack of resistance to material continues to occur.Thereby the key issue that improves the skimming tool life-span should be to reduce the temperature of its Service Environment, yet existing skimming tool is not yet taked the means of effectively lowering the temperature, and not yet finds the effective measures that reduce its Service Environment temperature.
In view of the analysis to skimming tool Service Environment and failure mechanism, propose to extend the corrective measure in skimming tool life-span: the resistance to material of skimming tool is taked to force cooling mode, reduce the temperature of the resistance to material Service Environment of skimming tool.After the temperature of resistance to material reduces, can effectively reduce thermal stress, and " thermal shock " effect causing thus, and then extend skimming tool service life.Simultaneously, also solved above-mentioned chemical erosion problem, when the resistance to material generation chemical reaction of slag and skimming tool, the low melting point forming, the slag not reacting with resistance to material is also cooled simultaneously, conversion zone based on there is chemical change, slag is bonded on resistance to material securely, formed the diaphragm of half curdled appearance of one deck densification, diaphragm poor thermal conductivity, having completely cut off high temperature furnace slag contacts with the direct of the resistance to material of skimming tool, can protect skimming tool to avoid high temperature erosion, under low-temperature condition, chemical reaction rate reduces greatly, reduced the chemical erosion of slag and resistance to material.
By taking to install the mode of cooler to skimming tool; resistance to material to skimming tool is strengthened cooling; can directly reduce the temperature of the resistance to material of skimming tool; impel the slag generation condensation on resistance to material surface; form the protection putamina of half curdled appearance of one deck densification; resistance to material is formed to a kind of " self-shield " layer, and then extender service life.The main cast iron quality of traditional cooler and fine copper material.Yet, current most popular spheroidal graphite cast-iron coldplate has the following disadvantages: (1) spheroidal graphite cast-iron casting coldplate must be smeared anti-carburization coating outside cooling duct, make to form air gap between passage and matrix, and air gap makes cooling wall heat transmission resistance increase more than 1000, worsen heat-transfer effect, increase coldplate working face temperature, accelerate the breakage of cooling wall; (2) on spheroidal graphite cast-iron matrix, be covered with the globular graphite (particle diameter 0.025～0.150mm) varying in size, after globular graphite is oxidized, will have formed a large amount of small holes, formed the inducement that crack and crackle occur, reduced coldplate service life; (3) when the large-scale spheroidal graphite casting of casting, C, S, P are easily pushed to equiax crystal district, ， center, liquid zone and form a segregation thing enrichment region in column crystallization process, have promoted generation and the expansion of matrix cracking, are unfavorable for improving the coldplate life-span; (4), when temperature is greater than 709 ℃, will there is irreversible transition in the matrix of spheroidal graphite cast-iron, the coefficient of expansion and internal stress sharp increase, and its damaged speed is accelerated; (5) spheroidal graphite cast-iron thermal conductivity and thermal shock resistance are poor, and its thermal conductivity factor is only 30wm
-2k
-1, be unfavorable for the high efficiency cooling of cooling wall.Yet, when the matrix of coldplate and cooling water pipe all adopt metallic copper, also exist following not enough: (1) cooling water pipe also adopts metallic copper, has further raised production cost; (2) easily there is burn through and distortion in copper cooling water pipe in casting process, and production process yield rate is low; (3) copper matrix is in actual use because intensity is low, in expanded by heating repeatedly, deformation process, easily damaged, and then leakage accident occurs, and causes potential safety hazard.
Summary of the invention
Object: in order to overcome the deficiencies in the prior art, the invention provides a kind of production method of skimming tool, skimming tool is composited by bimetallic, mainly comprise cooling plate base body and cooling water pipe, coldplate by oxygen-free copper material as cooling plate base body, by through the steel pipe of rolling as cooling water pipe, copper matrix and the moulding of cooling water pipe one-step casting.
Technical scheme: for solving the problems of the technologies described above, the technical solution used in the present invention is:
A kind of production method of skimming tool, it is characterized in that, described skimming tool comprises cooling matrix and built-in cooling water pipe, cooling matrix is rectangular structure, the bottom surface of cooling matrix and the even parallel fin that heat radiation is convenient in a plurality of prismatoid grooves formation that is distributed with of two corresponding side surface, cooling water pipe along cooling matrix inside repeatedly U-shaped bending arrange continuously, the water inlet of cooling water pipe and delivery port are all arranged on the upper surface of cooling matrix; Described cooling matrix inside offers a plurality of through holes; Production method comprises the following steps:
(1), adopt intermediate frequency furnace copper smelting water, in copper smelting water latter stage, a minute secondary adds slag forming agent, makes its uniform fold at copper water surface;
(2), before Tong Shui comes out of the stove, the Antaciron piece that disposable interpolation granularity is 30-40mm in induction furnace, the mode that adopts machinery to spray into is added;
(3), preparation composite solid cooling medium, after preparing, composite solid cooling medium, under atmospheric environment, is carried out to high temperature sintering, calcination temperature is controlled at 900-1300 ℃, removes the adhesive sinter piece into;
(4), be equipped with the liquid cooling medium of reusable edible;
(5), will put on request cast model through the cooling water pipe of rolling, at the two ends of cooling water pipe, by the external high-pressure hydraulic pump of resistant to elevated temperatures flexible pipe, the pressure of high-pressure hydraulic pump is 5-15Mpa; Before the cast of copper water, in cooling water pipe, pass in advance the liquid cooling medium of circulation, in copper water casting process, composite solid cooling medium is joined in the liquid cooling medium of circulation, micro-molten to guarantee cooling water pipe surface;
(6), by the copper water cast cooling plate base body that adds Antaciron piece, the middle part of cooling water pipe is cast in cooling plate base body, stretch out in matrix at two ends, controls the copper water degree of superheat 40-80 ℃ of scope;
(7), in modeling process, allow cast model accumbency, rising head is laid particular stress on a side moulding, after model mould assembling, model rising head one side is padded, makes rigid flask become 10-15 degree with ground; In casting process, adopt upper and lower two-layer ingate to carry out ladder cast, two-layer ingate be spaced apart 10-50cm, control accordingly the process of setting of coldplate, impel it to form consecutive solidification;
(8), cooling, lay down model, skimming tool is made.
The production method of described skimming tool, is characterized in that: the composition of described Antaciron piece and mass percent are: rare earth element 15-20%, silicon 20-30%, iron 50-65%; Antaciron piece additional proportion is 1-10kg/ ton copper water.
The production method of described skimming tool, is characterized in that: the component of described composite solid cooling medium and mass percent be, Cr
2o
3: 45-47%, SiO
2: 1-2%, CaO:0.5-1%, FeO:20-30%, MgO:10-15%, AL
2o
3: 10-20%, surplus is granularity 70-100 object carbon dust.
The production method of described skimming tool, is characterized in that: described composite solid cooling medium, its addition is: 1-10kg/ ton copper water.
The production method of described skimming tool, is characterized in that: the CaO that the raw material components of slag forming agent and mass percent are 30-50%, the SiO of 10-30%
2, the AL of 4-10%, 15-25%Al
2o
3, the MgO of 10-15%.
The production method of described skimming tool, is characterized in that: described liquid cooling medium, its flow velocity is 1-10m/s.
The cross section of described cooling water pipe is oval, and described oval-shaped minor axis and the length ratio of major axis are 0.5-0.7.
Beneficial effect: the production method of skimming tool provided by the invention, adopts the present invention can effectively avoid cooling water pipe to deform in casting process or burn through; Avoid producing air gap between cooling plate base body and cooling water pipe; Avoid cooling water pipe that complete remelting and perfect recrystallization occur in casting process, destroy the original rolling performance of cooling water pipe; Accurately realize the micro-molten of cooling water pipe outer surface, solved cooling water pipe burn through and inner surface problem of oxidation in casting process, extend the life-span of coldplate life-span and then prolongation blast furnace skimming tool, save production cost; Steel cooling water pipe and copper cooling plate base body are combined closely, improve the non-deformability of coldplate; Control solidification mode, realize consecutive solidification, improve the mechanical performance of coldplate; Adopt the compound mode of bimetallic, strengthened the mechanical performance of copper matrix.Take the resistance to material of skimming tool to force cooling mode, can form three-dimensional three-dimensional cooling effect to the resistance to material of skimming tool, reduce the temperature on the resistance to material of skimming tool surface, indirectly reduced the temperature of skimming tool Service Environment, reduce high temperature and the chemical erosion destruction to the resistance to material of skimming tool, improved skimming tool service life; Have the following advantages:
(1) skimming tool has adopted copper matrix, compares with plain cast iron coldplate, and the heat conductivility of copper is better.Promote on the whole the cooling capacity of coldplate, and then can reduce the use amount of cooling water;
(2) adopt the steel cooling water pipe through rolling, avoided cooling water pipe that burn through easily occurs in casting process, and (fusing point of copper is about 1083 ℃ to the problem that yield rate is low, the fusing point of steel is about 1530 ℃, so in casting process, can there is not burn through when the steel pipe of imbedding runs into liquid copper);
(3) cooling water pipe and the moulding of matrix one-step casting, reduced welding process, improved production efficiency, reduced production cost;
(4) cooling water pipe adopts repeatedly crooked mode, can form three-dimensional three-dimensional cooling effect to the resistance to material of skimming tool, reduces the temperature on the resistance to material of skimming tool surface, has indirectly reduced the temperature of skimming tool Service Environment, thereby has extended its service life;
(5) on copper matrix, there are a plurality of through holes, when guaranteeing matrix strength, reduced the consumption of metallic copper.
Accompanying drawing explanation
Fig. 1 and Fig. 2 are structural representation of the present invention.
In figure: cooling plate base body 1, cooling water pipe 2, fin 3, through hole 4.
The specific embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
As depicted in figs. 1 and 2, for a kind of skimming tool, comprise cooling matrix 1 and built-in cooling water pipe 2, described cooling matrix 1 is rectangular structure, the bottom surface of described cooling matrix and the even parallel fin 3 that heat radiation is convenient in a plurality of prismatoid grooves formation that is distributed with of two corresponding side surface, described cooling water pipe 2 along cooling matrix 1 inside repeatedly U-shaped bending arrange continuously, the water inlet of cooling water pipe 2 and delivery port are all arranged on the upper surface of cooling matrix; Described cooling matrix inside offers a plurality of cuboid through holes 4; By oxygen-free copper, as cooling plate base body, the built-in steel pipe through rolling of matrix is as cooling water pipe.
The production method of skimming tool of the present invention, comprise the following steps: (1) adopts intermediate frequency furnace that copper billet is smelted for copper water, when the copper billet in stove is melted to " clear water " state completely, for smelting latter stage, according to copper water per ton, add the ratio of 30-60kg slag forming agent to add slag forming agent to copper water surface, be divided into twice and on average add, twice joining day 1-3 minute of being separated by;
The raw material components of slag forming agent and mass percent are the CaO of 30-50%, the SiO of 10-30%
2, the AL of 4-10%, 15-25%Al
2o
3, the MgO of 10-15%.
(2), before Tong Shui comes out of the stove, the Antaciron piece that disposable interpolation granularity is 30-40mm in induction furnace, the ratio that adds 1-10kg Antaciron piece according to copper water per ton, the mode that adopts machinery to spray into is added, avoid alloy to swim on the slag forming agent of fusing, after alloy adds, standing, wait to be cast;
The composition of Antaciron piece and mass percent are: rare earth element 15-20%, silicon 20-30%, iron 50-65%.
(3), preparation composite solid cooling medium, after preparing, by composite solid cooling medium under atmospheric environment, carry out high temperature sintering, calcination temperature is controlled at 900-1300 ℃, and the time is controlled at 1-3 minute, limit calcination, composite solid cooling medium is stirred on limit, and removes the adhesive that sinters piece in time;
The component of composite solid cooling medium and mass percent be, Cr
2o
3: 45-47%, SiO
2: 1-2%, CaO:0.5-1%, FeO:20-30%, MgO:10-15%, AL
2o
3: 10-20%, its surplus is granularity 70-100 object carbon dust.
(4), be equipped with the liquid cooling medium of reusable edible, its main component is high temperature resistant inorganic oil A;
(5), will put on request cast model through the cooling water pipe of rolling, at the two ends of cooling water pipe, by the external high-pressure hydraulic pump of resistant to elevated temperatures flexible pipe, the pressure of high-pressure hydraulic pump is 5-15Mpa; Before the cast of copper water, in cooling water pipe, pass in advance the liquid cooling medium of circulation, in copper water casting process, composite solid cooling medium is joined in the liquid cooling medium of circulation, micro-molten to guarantee cooling water pipe surface;
(6), by the copper water cast cooling plate base body that adds Antaciron piece, the middle part of cooling water pipe is cast in cooling plate base body, stretch out in matrix at two ends, temperature is controlled at 1120-1160 ℃, makes the copper water degree of superheat 40-80 ℃ of scope;
(7), in modeling process, allow cast model accumbency, rising head is laid particular stress on a side moulding, after model mould assembling, model rising head one side is padded, makes rigid flask become 10-15 degree with ground; In casting process, adopt upper and lower two-layer ingate to carry out ladder cast, two-layer ingate be spaced apart 10-50cm, control the process of setting of coldplate, impel it to form consecutive solidification;
(8), the good coldplate of above-mentioned cast is placed on to shady and cool lee after naturally cooling 24 hours, lay down model, in the copper matrix completing, be cast into the part of steel cooling water pipe.
The gas cooled pattern that the present invention breaks traditions, avoid using current must not then adopt to the disadvantageous internal densener piece of material property, realize and accurately control caloric receptivity, guarantee that remelting and recrystallization do not occur cooling water pipe 2 outer surfaces, solved the problem of cooling water pipe 2 burn through and oxidation in casting process, impel cooling water pipe 2 surfaces micro-molten in casting process, and cooling water pipe 2 is combined closely after cast with cooling plate base body 1, kept grain form and the structural behaviour of cooling water pipe 2 under original rolling condition, kept the original good rolling performance of cooling water pipe 2.And, can change the proportioning of composite solid cooling medium according to different needs, change heat transfer efficiency, thereby control micro-the melting in surface of cooling water pipe 2, guarantee in conjunction with effect.
The production method of skimming tool provided by the invention, based on copper-bimetal copper-steel, fusion forms, and adopts oxygen-free copper as cooling plate base body, adopts the steel pipe of rolling as cooling water pipe, matrix and the moulding of cooling water pipe one-step casting, comprising: in copper water, add slag forming agent and Antaciron piece; By cooling water pipe put into cast model, in cooling water pipe by liquid cold medium and composite solid cooling medium; By copper water cast cooling plate base body, the middle part of cooling water pipe is cast in matrix; In casting process, allow and pour into a mould model accumbency, rising head is laid particular stress on a side moulding, after model mould assembling, model rising head one side is padded; Adopt upper and lower two-layer ingate to carry out ladder cast, form consecutive solidification; Cooling, lay down model.The present invention can effectively avoid cooling water pipe in casting process, to be out of shape or local burn through; Avoid producing air gap between cooling plate base body and cooling water pipe; Avoid occurring complete remelting and perfect recrystallization, accurately realize the micro-molten of cooling water pipe outer surface, improve the cooling effect of coldplate; By built-in rolled steel tube, strengthened the mechanical performance of copper matrix.Can form three-dimensional three-dimensional cooling effect to the resistance to material of skimming tool, reduce the temperature on the resistance to material of skimming tool surface, indirectly reduce the temperature of skimming tool Service Environment, reduce high temperature and the chemical erosion destruction to the resistance to material of skimming tool, improve skimming tool service life.
The above is only the preferred embodiment of the present invention; be noted that for those skilled in the art; under the premise without departing from the principles of the invention, can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (6)
1. the production method of a skimming tool, it is characterized in that, described skimming tool comprises cooling matrix and built-in cooling water pipe, cooling matrix is rectangular structure, the bottom surface of cooling matrix and the even parallel fin that heat radiation is convenient in a plurality of prismatoid grooves formation that is distributed with of two corresponding side surface, cooling water pipe along cooling matrix inside repeatedly U-shaped bending arrange continuously, the water inlet of cooling water pipe and delivery port are all arranged on the upper surface of cooling matrix; Described cooling matrix inside offers a plurality of through holes; Production method comprises the following steps:
(1), adopt intermediate frequency furnace copper smelting water, in copper smelting water latter stage, a minute secondary adds slag forming agent, makes its uniform fold at copper water surface;
(2), before Tong Shui comes out of the stove, the Antaciron piece that disposable interpolation granularity is 30-40mm in induction furnace, the mode that adopts machinery to spray into is added;
(3), preparation composite solid cooling medium, after preparing, composite solid cooling medium, under atmospheric environment, is carried out to high temperature sintering, calcination temperature is controlled at 900-1300 ℃, removes the adhesive sinter piece into;
(4), be equipped with the liquid cooling medium of reusable edible;
(5), will put on request cast model through the cooling water pipe of rolling, at the two ends of cooling water pipe, by the external high-pressure hydraulic pump of resistant to elevated temperatures flexible pipe, the pressure of high-pressure hydraulic pump is 5-15Mpa; Before the cast of copper water, in cooling water pipe, pass in advance the liquid cooling medium of circulation, in copper water casting process, composite solid cooling medium is joined in the liquid cooling medium of circulation, micro-molten to guarantee cooling water pipe surface;
(6), by the copper water cast cooling plate base body that adds Antaciron piece, the middle part of cooling water pipe is cast in cooling plate base body, stretch out in matrix at two ends, controls the copper water degree of superheat 40-80 ℃ of scope;
(7), in modeling process, allow cast model accumbency, rising head is laid particular stress on a side moulding, after model mould assembling, model rising head one side is padded, makes rigid flask become 10-15 degree with ground; In casting process, adopt upper and lower two-layer ingate to carry out ladder cast, two-layer ingate be spaced apart 10-50cm, control accordingly the process of setting of coldplate, impel it to form consecutive solidification;
(8), cooling, lay down model, skimming tool is made.
2. the production method of skimming tool according to claim 1, is characterized in that: the composition of described Antaciron piece and mass percent are: rare earth element 15-20%, silicon 20-30%, iron 50-65%; Antaciron piece additional proportion is 1-10kg/ ton copper water.
3. the production method of skimming tool according to claim 1, is characterized in that: the component of described composite solid cooling medium and mass percent be, Cr
2o
3: 45-47%, SiO
2: 1-2%, CaO:0.5-1%, FeO:20-30%, MgO:10-15%, AL
2o
3: 10-20%, surplus is granularity 70-100 object carbon dust.
4. the production method of skimming tool according to claim 1, is characterized in that: described composite solid cooling medium, its addition is: 1-10kg/ ton copper water.
5. the production method of skimming tool according to claim 1, is characterized in that: the CaO that the raw material components of slag forming agent and mass percent are 30-50%, the SiO of 10-30%
2, the AL of 4-10%, 15-25%Al
2o
3, the MgO of 10-15%.
6. the production method of skimming tool according to claim 1, is characterized in that: described liquid cooling medium, its flow velocity is 1-10m/s.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110586923A (en) * | 2019-09-16 | 2019-12-20 | 四川省金镭重工有限公司 | Casting system and casting method of metallurgical blanking port |
| CN114264158A (en) * | 2021-12-31 | 2022-04-01 | 安徽凤阳玻璃股份有限公司 | Slag extractor |
| CN114800788A (en) * | 2022-03-22 | 2022-07-29 | 北京利尔高温材料股份有限公司 | Slag skimmer quick-change mold and preparation method of iron runner |
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| CN2737800Y (en) * | 2004-10-01 | 2005-11-02 | 邯郸钢铁股份有限公司 | Slag skimmer |
| CN101509050A (en) * | 2009-03-23 | 2009-08-19 | 四川省川威集团有限公司 | Method for producing and mending slag separator |
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| JPS5722861A (en) * | 1980-07-15 | 1982-02-05 | Nippon Light Metal Co Ltd | Insert casting method of hollow member |
| JPS6380954A (en) * | 1986-09-24 | 1988-04-11 | Mitsubishi Heavy Ind Ltd | Casting method of rotor for kneading machine |
| CN2737800Y (en) * | 2004-10-01 | 2005-11-02 | 邯郸钢铁股份有限公司 | Slag skimmer |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110586923A (en) * | 2019-09-16 | 2019-12-20 | 四川省金镭重工有限公司 | Casting system and casting method of metallurgical blanking port |
| CN114264158A (en) * | 2021-12-31 | 2022-04-01 | 安徽凤阳玻璃股份有限公司 | Slag extractor |
| CN114800788A (en) * | 2022-03-22 | 2022-07-29 | 北京利尔高温材料股份有限公司 | Slag skimmer quick-change mold and preparation method of iron runner |
| CN114800788B (en) * | 2022-03-22 | 2023-11-28 | 北京利尔高温材料股份有限公司 | Preparation method of skimming tool quick-change mold and iron runner |
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| CN103611921B (en) | 2015-12-02 |
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