CN104513879A - Method for treating molten iron - Google Patents
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- CN104513879A CN104513879A CN201510008888.8A CN201510008888A CN104513879A CN 104513879 A CN104513879 A CN 104513879A CN 201510008888 A CN201510008888 A CN 201510008888A CN 104513879 A CN104513879 A CN 104513879A
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Abstract
The invention relates to a method for treating molten iron in a production process of spheroidal graphite cast iron, vermicular graphite cast iron or molten iron desulphurization. According to the method, a spheroidizing agent, a vermicular agent or a desulfurizing agent are put into a reaction chamber formed in a molten iron treatment ladle for treating the molten iron, wherein an inwards protruded type annular belt and the reaction chamber are arranged in the molten iron treatment ladle; magnesium steam generated during molten iron reaction is diffused outwards through the charging hole of the reaction chamber and a decompression groove. Therefore, the problems of moving and upward floating of the spheroidizing agent, the vermicular agent or the desulfurizing agent after melting loss are solved, the problems of strong reaction and low absorption rate of effective elements during treatment of the molten iron in the ladle are solved, the reaction time of the molten iron is accurately controlled, the product quality is improved, the production cost is reduced, the operation is simple and convenient, the resources are brought into full play and utilized, and the production environment is remarkably improved; in addition, the molten iron in the molten iron treatment and pouring processes is slightly cooled, the absorption rate of the effective elements is high, and the consumption of rare earth element RE can be reduced by 50-75%.
Description
Technical field
The invention relates to the treatment process of molten iron, is more particularly the treatment process of molten iron in the production process about spheroidal graphite cast iron or vermicular cast iron or desulfurizing iron.
Background technology
In the production process of spheroidal graphite cast iron or vermicular cast iron or desulfurizing iron, after molten iron process, molten iron cooling is inevitable; In the treating processes of spheroidal graphite cast iron or vermicular cast iron, except molten iron cooling, also can produce oxidation and the escape of effective element, the quality of product will be had influence on.
On September 6th, 2013, applicant has applied for that Chinese invention patent publication No. CN103874771A name is called " nodulizing process of spheroidal graphite cast iron ", and applied for that Chinese invention patent publication No. CN103862004A name is called " method of molten iron process " two patent applications on March 2nd, 2014, utilize the reaction chamber built in hot metal ladle, overall rare earth ferrosilicomagnesium nodulizing agent or low-silicon nodulizer or sweetening agent are put in reaction chamber, because overall rare earth ferrosilicomagnesium nodulizing agent or vermiculizer or sweetening agent are limited in the reaction chamber of molten iron pack processing, the magnesium vapor produced during molten iron reaction by the reaction chamber charging opening reserved and relief groove to external diffusion, the mobile problem floated after solving overall rare earth ferrosilicomagnesium nodulizing agent or vermiculizer or sweetening agent melting loss, react violent molten iron when solving molten iron process to splash, the problem that effective element specific absorption is low.When chemical composition and the change of processed weight of molten iron of processed molten iron, its add-on can be adjusted at any time.Accurately can control the reaction times of molten iron, when the molten iron temperature fluctuation < 100 DEG C poured, the molten iron reaction times, upper lower variation of tolerance was less than for 5 seconds.Because effective element specific absorption is high, reduce costs improving the quality of products and serve positive effect; Be equipped with covering clad in the upper end of molten iron pack processing, effectively can reduce the problem of processed molten iron cooling.But, for processed molten iron temperature higher than 1550 DEG C, when the weight of processed molten iron only has about 500kg, the specific absorption of its effective element obviously declines, the specific absorption of such as magnesium is reduced to 50% by 85%, therefore, needs to carry out necessary technological improvement to the method for above-mentioned molten iron process.
Summary of the invention
The object of this invention is to provide a kind of easy to operate and be greater than at processed molten iron temperature the method that 1550 DEG C can be carried out molten iron process continuously, the weight of its processed molten iron still keeps when about 500kg the advantage that the specific absorption of magnesium is high, nodulizing agent or vermiculizer or sweetening agent are put into the molten iron treatment process of carrying out in the reaction chamber of building by laying bricks or stones in molten iron pack processing, react violent when solving molten iron process in bag, the problem that effective element specific absorption is low, the accurate control spheroidizing reacion time, improve the quality of products, reduce production cost, easy and simple to handle, give full play to and utilize resource, the remarkable environment improving production process.Utilize Chinese invention patent application number: 201410001806.2 are called that the weight percent of the contained element of technical characteristic making of " production method of high-quality nodulizing agent " is: containing Mg≤10%, containing Si >=65% with containing the overall rare earth ferrosilicomagnesium nodulizing agent that RE≤2% content of magnesia is low, Segregation of Chemical Composition is few; Utilize Chinese invention patent publication No.: the technical characteristic that CN103422008A name is called " production of vermicular cast iron vermiculizer and application thereof " makes vermiculizer; Utilize Chinese invention patent publication No.: the technical characteristic that CN103421927A name is called " method of the outer desulfurizing iron process of stove " makes sweetening agent.
Learn experienced by a large amount of experimental and theoretical analysis, the key factor affecting magnesium absorption rate during molten iron process comprises: 1. select pure magnesium still to select magnesium alloy, the content of magnesium and the combination of magnesium alloy composition in magnesium alloy.Whether the 2. temperature of processed molten iron is the molten iron bag used continuously.3. the mode of molten iron process: the structure being first molten iron pack processing, selects traditional pit type hot metal ladle, dam-type hot metal ladle, flat bag, has the hot metal ladle of the reaction chamber structure of appropriate design, and arrange covering clad in the upper end of molten iron pack processing.Use reaction times when identical molten iron treatment temp, identical magnesium alloy, molten iron process also identical, but the molten iron pack processing with reaction chamber of different structure size, directly can have influence on the specific absorption of magnesium, the specific absorption of magnesium is reduced to 50% by 85% ~ 88%.4. the weight that pours molten iron accounts for the time that the ratio of processed molten iron gross weight and molten iron reaction start the speed of putting into of processed molten iron, first time.The size of magnesium vapor bubble and the violent state of reaction is produced during the processing reaction of 5. molten iron.
Have employed for achieving the above object and as shown in Figure of description 1 to accompanying drawing 3, there is inwardly projecting style endless belt and the molten iron pack processing of building the room that responds by laying bricks or stones: built left vertical surface baffle plate and right vertical surface baffle plate in the bottom of molten iron pack processing by laying bricks or stones, semicircle shape reaction chamber upper cover plate has been built by laying bricks or stones in the top level of left vertical surface baffle plate and right vertical surface baffle plate, tool bevelled semicircle shape reaction chamber upper cover plate has been built by laying bricks or stones at the top of semicircle shape reaction chamber upper cover plate, half circular area portions that semicircle shape reaction chamber upper cover plate covers is not had in hot metal ladle, height location bottom semicircle shape reaction chamber upper cover plate upwards builds the inwardly projecting style endless belt with water outlet by laying bricks or stones, the beveled top end height of tool bevelled semicircle shape reaction chamber upper cover plate is identical with the overhead height of the inwardly projecting style endless belt with water outlet, the internal diameter with the inwardly projecting style endless belt of water outlet is identical with the internal diameter of tool bevelled semicircle shape reaction chamber upper cover plate, the water outlet position that the inwardly projecting style endless belt with water outlet is offered is below molten iron process handbag mouth, the vertical surface of reaction chamber is provided with a reaction chamber charging opening, reaction chamber charging opening is by left vertical surface baffle plate, right vertical surface baffle plate and reaction chamber floor combination become, near left vertical surface baffle plate and right vertical surface baffle plate, the vertical surface of one end of reaction chamber charging opening is made into by the bell mouth shape outwards widened gradually in reaction chamber, the position at nodularization handbag mouth place faced by the opening direction of reaction chamber charging opening, relief groove is offered in the upper end of charging opening, the upper surface of relief groove is exactly the bottom surface of semicircle shape reaction chamber upper cover plate, relief groove is made up of the gap between left vertical surface baffle plate and right vertical surface baffle plate, molten iron can pass in and out reaction chamber by relief groove, the outer vertical of left vertical surface baffle plate and right vertical surface baffle plate is concordant with the vertical surface of semicircle shape reaction chamber upper cover plate, molten iron process is used for after the molten iron pack processing constructed being dried.
Utilize above-mentioned there is water outlet inwardly projecting style endless belt and build the molten iron pack processing of the room that responds by laying bricks or stones, select the nodulizing agent of above-mentioned suitable kind or vermiculizer or sweetening agent to carry out molten iron process as required, its molten iron treatment step is as follows:
A, the nodulizing agent of required weight or vermiculizer or sweetening agent are put in the reaction chamber of molten iron pack processing;
B, for production spheroidal graphite cast iron or vermicular cast iron time required nucleating agent is put in the reaction chamber of molten iron pack processing;
C, molten iron pour after molten iron pack processing reaches the height of semicircle shape reaction chamber upper cover plate, and molten iron reaction starts;
Put into poly-slag agent after the reaction of d, molten iron terminates and scratch clean scum silica frost, adopting insulating covering agent to cover molten iron; Molten iron is covered at molten iron surface coverage composite inoculant for also needing before covering insulating covering agent when production spheroidal graphite cast iron or vermicular cast iron.
Above-mentioned there is inwardly projecting style endless belt and the molten iron pack processing of building the room that responds by laying bricks or stones changes molten iron process time response behaviour, molten iron pours in bag, be punched in the rapid impact that flow downward along inclined-plane of molten iron meeting at tool bevelled semicircle shape reaction chamber upper cover plate top, after molten iron reaction starts, the magnesium vapor ejected by reaction chamber mouth moves in the horizontal direction and collides after hot metal ladle wall, upwards impact under follow-up magnesium vapor promotes, backward lower falling is stopped by the inwardly projecting style endless belt with water outlet, cross and so forth, the abundant contact reacts of magnesium vapor making processed molten iron and eject, the specific absorption of magnesium is stable to be improved.
Beneficial effect of the present invention:
Because nodulizing agent or vermiculizer or sweetening agent are limited in the reaction chamber of molten iron pack processing, the magnesium vapor produced during molten iron reaction by the reaction chamber charging opening reserved and relief groove to external diffusion, that builds by laying bricks or stones in hot metal ladle has the inwardly projecting style endless belt stable specific absorption that improve magnesium further, the mobile problem floated after solving nodulizing agent or vermiculizer or sweetening agent melting loss, the problem that when solving molten iron process, reaction is violent, molten iron splashes, effective element specific absorption is low.When chemical composition and the change of processed weight of molten iron of processed molten iron, the add-on of nodulizing agent or vermiculizer or sweetening agent can be adjusted at any time.Can accurately control the molten iron reaction times, when the molten iron temperature fluctuation < 100 DEG C poured, the molten iron reaction times, upper lower variation of tolerance was less than for 5 seconds.Improve the environment of production process.In molten iron process and casting process, molten iron cooling is few, and the specific absorption of effective element is high, and the consumption of its rare earth elements RE can reduce by 50 ~ 75%.
Accompanying drawing illustrates:
Fig. 1 is the front view having inwardly projecting style endless belt and build the molten iron pack processing of the room that responds by laying bricks or stones.
Fig. 2 is the vertical view having inwardly projecting style endless belt and build the molten iron pack processing of the room that responds by laying bricks or stones.
Fig. 3 is the sectional view having inwardly projecting style endless belt and build the molten iron pack processing of the room that responds by laying bricks or stones.
Description of reference numerals: 1 is molten iron pack processing, 2 is left vertical surface baffle plate, 3 is right vertical surface baffle plate, and 4 is semicircle shape reaction chamber upper cover plate, and 5 is tool bevelled semicircle shape reaction chamber upper cover plate, 6 for having the inwardly projecting style endless belt of water outlet, 7 is reaction chamber charging opening, and 8 is relief groove, and 9 is water outlet, 10 is molten iron process handbag mouth, and 11 is reaction chamber base plate.
Embodiment:
Above-mentioned molten iron treatment process, for preventing accumulating residue molten iron in the reaction chamber of molten iron pack processing, the bottom of reaction chamber higher than the bottom of the outer molten iron pack processing of reaction chamber, should build the reaction chamber base plate 11 made with refractory materials by laying bricks or stones in the bottom of reaction chamber.
Above-mentioned molten iron treatment process, the nodulizing agent of required weight or vermiculizer or sweetening agent are put into the mode in reaction chamber: 1. can by spheroidizing bag 1 90-degree rotation angle, add in the reaction chamber of molten iron pack processing 1 with long handle feeding tool smoothly by above-mentioned materials by reaction chamber charging opening 5 upward; 2. molten iron pack processing 1 non rotating, adopts special fixture and instrument to be placed in the reaction chamber of molten iron pack processing 1 by above-mentioned materials.
Above-mentioned molten iron treatment process, the left vertical surface baffle plate 2 of molten iron pack processing 1 reaction chamber, right vertical surface baffle plate 3, semicircle shape reaction chamber upper cover plate 4 and tool bevelled semicircle shape reaction chamber upper cover plate 5 adopt refractory fireclay block to build, can process continuously when high temperature liquid iron process molten iron 35 bag time more than, because chamber designs is reasonable, clean without dross in reaction chamber after molten iron process.Refractory materials factory is entrusted to make left vertical surface baffle plate 2 and right vertical surface baffle plate 3 respectively, semicircle shape reaction chamber upper cover plate 4 and tool bevelled semicircle shape reaction chamber upper cover plate 5 are merged into a single whole and is processed into the refractory brick of required geomery, also left vertical surface baffle plate 2, right vertical surface baffle plate 3, semicircle shape reaction chamber upper cover plate 4 and tool bevelled semicircle shape reaction chamber upper cover plate 5 can be manufactured respectively the refractory brick of required geomery; The refractory materials of clay brick, high silica brick, high magnesia brick is selected to make the molectron of semicircle shape reaction chamber upper cover plate 4 and tool bevelled semicircle shape reaction chamber upper cover plate 6; Or select the refractory materials of clay brick, high silica brick, high magnesia brick to make left vertical surface baffle plate 2, right vertical surface baffle plate 3 and semicircle shape reaction chamber upper cover plate 4 and tool bevelled semicircle shape reaction chamber upper cover plate 5 respectively.
The method of molten iron process in the production process of above-mentioned spheroidal graphite cast iron or vermicular cast iron or desulfurizing iron, adopts the iron plate of thickness≤2mm or iron filings shutoff reaction chamber charging opening 7 and relief groove 8, postpones the time that molten iron reaction starts.
The minimum altitude of the above-mentioned molten iron volume that has inwardly projecting style endless belt and the molten iron pack processing of building the room that responds by laying bricks or stones is processed should higher than reaction chamber upper cover plate 4.
Above-mentioned there is water outlet inwardly projecting style endless belt and the molten iron pack processing of building the room that responds by laying bricks or stones for the treatment of more than 10 tons molten iron time, should increase the number of reaction chamber charging opening for ease of reinforced process molten iron, the upper end of a charging opening offers relief groove wherein.
In order to reduce the cooling of processed molten iron, select to arrange covering clad in the upper end of molten iron pack processing, covering clad is peviform, the bottom covering clad offers molten iron water-in, the inside covering clad is equipped with the muscles and bones frame covering clad, cover the outer lining refractories of muscles and bones frame of clad, cover the top that the edge given prominence on clad top is placed on molten iron pack processing, the upper end of molten iron pack processing is inserted in the bottom covering clad, covers between the bottom of clad and the molten iron process handbag mouth of molten iron pack processing upper end and leaves gap as molten iron water outlet.
Embodiment 1: carry out under electrosmelting of intermediate frequency condition, adopt the reaction chamber structure of molten iron pack processing 1 shown in accompanying drawing, cover clad, the overall rare earth ferrosilicomagnesium nodulizing agent without outer lining steel pipe is adopted to load in the reaction chamber of molten iron pack processing, often bag process weight of molten iron is 500kg, electric furnace molten iron discharging temperature is 1575 DEG C, base iron sulphur content 0.027%, rare earth ferrosilicomagnesium nodulizing agent is containing Mg11.5%, containing RE1% with containing Si61.5%, the weight of the rare earth ferrosilicomagnesium nodulizing agent added accounts for 0.59% of processed weight of molten iron, the 72SiFe nucleating agent of 0.8% is added in reaction chamber, adopting the silicon titanate innoculant of granularity≤5mm to carry out its add-on of covering molten iron after spheroidizing reacion terminates to skim is 0.15%, do not covering in iron filings and perlitic situation, the spheroidizing reacion time is 96 seconds, total overall reaction process is the reaction of even spurting, spheroidizing reacion is steady, splash without molten iron, spheroidizing reacion terminates rear sulfur content of hot metal 0.009%, magnesium content 0.049%, it is 1520 DEG C at the end of molten iron reaction, spheroidizing reacion terminates sampling in 10 minutes, nodulizing grade 2 grades.
Embodiment 2: carry out under electrosmelting of intermediate frequency condition, adopt the reaction chamber structure of molten iron pack processing 1 shown in accompanying drawing, process molten iron 1000Kg, 1525 DEG C of spheroidizings of tapping a blast furnace, rare earth ferrosilicomagnesium nodulizing agent is added containing Mg13.5%, containing RE1% with containing Si63.5%, the weight of the rare earth ferrosilicomagnesium nodulizing agent added accounts for 0.49% of processed weight of molten iron in the reaction chamber of molten iron pack processing; The 72SiFe nucleating agent of 0.8% is added, its granularity≤25mm in reaction chamber; The 1000Kg molten iron that is processed once all is poured in molten iron pack processing, along 18cm in molten iron pack processing, molten iron reaction process is splashed without molten iron, the total reaction time of spheroidizing reacion is 118 seconds, be 1460 DEG C at the end of molten iron reaction, total overall reaction process is smokeless boiling reaction, and cross dimensions is that the chill block of 25mm × 50mm is cooled to black and waters, chill width 1-2mm, top depression are obvious, and the specific absorption of Mg is high.
Claims (6)
1. the method about molten iron process in the production process of spheroidal graphite cast iron or vermicular cast iron or desulfurizing iron, it is characterized in that having built left vertical surface baffle plate (2) and right vertical surface baffle plate (3) by laying bricks or stones in the bottom of molten iron pack processing (1), built semicircle shape reaction chamber upper cover plate (4) by laying bricks or stones in the top level of left vertical surface baffle plate (2) and right vertical surface baffle plate (3), tool bevelled semicircle shape reaction chamber upper cover plate (5) has been built by laying bricks or stones at the top of semicircle shape reaction chamber upper cover plate (4), not by half circular area portions that semicircle shape reaction chamber upper cover plate (4) covers in hot metal ladle, the inwardly projecting style endless belt (6) with water outlet (9) is upwards built by laying bricks or stones at the height location of semicircle shape reaction chamber upper cover plate (4) bottom, the beveled top end height of tool bevelled semicircle shape reaction chamber upper cover plate (5) is identical with the overhead height of the inwardly projecting style endless belt (6) with water outlet (9), the internal diameter with the inwardly projecting style endless belt (6) of water outlet (9) is identical with the internal diameter of tool bevelled semicircle shape reaction chamber upper cover plate (5), water outlet (9) position that the inwardly projecting style endless belt (6) with water outlet (9) is offered is in molten iron process handbag mouth (10) below, the vertical surface of reaction chamber is provided with a reaction chamber charging opening (7), reaction chamber charging opening (7) is by left vertical surface baffle plate (2), right vertical surface baffle plate (3) and reaction chamber base plate (11) are combined into, the vertical surface of one end of left vertical surface baffle plate (2) and the neighbour reaction chamber charging opening (7) of right vertical surface baffle plate (3) is made into by the bell mouth shape outwards widened gradually in reaction chamber, the position at molten iron process handbag mouth (10) place faced by the opening direction of reaction chamber charging opening (7), relief groove (8) is offered in the upper end of charging opening (7), the upper surface of relief groove (8) is exactly the bottom surface of semicircle shape reaction chamber upper cover plate (4), relief groove (8) is made up of the gap between left vertical surface baffle plate (2) and right vertical surface baffle plate (3), molten iron is by relief groove (8) turnover reaction chamber, the outer vertical of left vertical surface baffle plate (2) and right vertical surface baffle plate (3) is concordant with the vertical surface of semicircle shape reaction chamber upper cover plate (4), molten iron process is used for after the molten iron pack processing constructed being dried,
Utilize above-mentioned there is water outlet inwardly projecting style endless belt and build the molten iron pack processing (1) of the room that responds by laying bricks or stones, select the nodulizing agent of suitable kind or vermiculizer or sweetening agent to carry out molten iron process as required, its molten iron treatment step is as follows:
A, the nodulizing agent of required weight or vermiculizer or sweetening agent are put in the reaction chamber of molten iron pack processing;
B, for production spheroidal graphite cast iron or vermicular cast iron time required nucleating agent is put in the reaction chamber of molten iron pack processing;
C, molten iron pour after molten iron pack processing reaches the height of semicircle shape reaction chamber upper cover plate, and molten iron reaction starts;
Put into poly-slag agent after the reaction of d, molten iron terminates and scratch clean scum silica frost, adopting insulating covering agent to cover molten iron; Molten iron is covered at molten iron surface coverage composite inoculant for also needing before covering insulating covering agent when production spheroidal graphite cast iron or vermicular cast iron.
2. the method for molten iron process in the production process of spheroidal graphite cast iron according to claim 1 or vermicular cast iron or desulfurizing iron, is characterized in that the left vertical surface baffle plate (2) of molten iron pack processing (1) reaction chamber, right vertical surface baffle plate (3), semicircle shape reaction chamber upper cover plate (4) and tool bevelled semicircle shape reaction chamber upper cover plate (5) to select the refractory materials of clay brick, high silica brick, high magnesia brick to make refractory brick respectively; The refractory materials of clay brick, high silica brick, high magnesia brick is selected to make the molectron of semicircle shape reaction chamber upper cover plate (4) and tool bevelled semicircle shape reaction chamber upper cover plate (5).
3. the method for molten iron process in the production process of spheroidal graphite cast iron according to claim 1 or vermicular cast iron or desulfurizing iron, it is characterized in that the bottom of reaction chamber higher than the bottom of the outer molten iron pack processing of reaction chamber, should build the reaction chamber base plate (11) made with refractory materials by laying bricks or stones in the bottom of reaction chamber.
4. the method for molten iron process in the production process of spheroidal graphite cast iron according to claim 1 or vermicular cast iron or desulfurizing iron, it is characterized in that adopting the iron plate of thickness≤2mm or iron filings shutoff reaction chamber charging opening (7) and relief groove (8), postpone the time that molten iron reaction starts.
5. the method for molten iron process in the production process of spheroidal graphite cast iron according to claim 1 or vermicular cast iron or desulfurizing iron, it is characterized in that having the inwardly projecting style endless belt of water outlet and the molten iron pack processing (1) of building the room that responds by laying bricks or stones for the treatment of more than 10 tons molten iron time, should increase the number of reaction chamber charging opening for ease of reinforced process molten iron, the upper end of a charging opening offers relief groove wherein.
6. according to claim 1, 3, 4, the method of molten iron process in the production process of the spheroidal graphite cast iron described in 5 or vermicular cast iron or desulfurizing iron, it is characterized in that arranging covering clad in the upper end of molten iron pack processing, covering clad is peviform, the bottom covering clad offers molten iron water-in, the inside covering clad is equipped with the muscles and bones frame covering clad, cover the outer lining refractories of muscles and bones frame of clad, cover the top that the edge given prominence on clad top is placed on molten iron pack processing, the upper end of molten iron pack processing is inserted in the bottom covering clad, cover between the bottom of clad and the molten iron process handbag mouth of molten iron pack processing upper end and leave gap as molten iron water outlet.
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| CN201510008888.8A CN104513879B (en) | 2015-01-01 | 2015-01-01 | Method for treating molten iron |
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| CN201510008888.8A CN104513879B (en) | 2015-01-01 | 2015-01-01 | Method for treating molten iron |
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| CN104513879B CN104513879B (en) | 2017-03-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105420438A (en) * | 2015-12-30 | 2016-03-23 | 广西玉柴机器股份有限公司 | Vermicularizing processor |
| CN105925747A (en) * | 2016-05-26 | 2016-09-07 | 合肥市田源精铸有限公司 | High-performance slag collecting agent |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102350495A (en) * | 2011-10-17 | 2012-02-15 | 中钢集团邢台机械轧辊有限公司 | Spheroidized ladle with long service life |
| CN202639310U (en) * | 2012-06-28 | 2013-01-02 | 河北新兴铸管有限公司 | Balling desulfurization bag |
| CN103433471A (en) * | 2013-09-06 | 2013-12-11 | 天津市万路科技有限公司 | Spheroidizing method of nodular cast iron |
| CN103862004A (en) * | 2013-09-06 | 2014-06-18 | 天津市万路科技有限公司 | Molten iron treatment method |
| WO2014134762A1 (en) * | 2013-03-04 | 2014-09-12 | 天津市万路科技有限公司 | Nodularization method for nodular cast iron |
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2015
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102350495A (en) * | 2011-10-17 | 2012-02-15 | 中钢集团邢台机械轧辊有限公司 | Spheroidized ladle with long service life |
| CN202639310U (en) * | 2012-06-28 | 2013-01-02 | 河北新兴铸管有限公司 | Balling desulfurization bag |
| WO2014134762A1 (en) * | 2013-03-04 | 2014-09-12 | 天津市万路科技有限公司 | Nodularization method for nodular cast iron |
| CN103433471A (en) * | 2013-09-06 | 2013-12-11 | 天津市万路科技有限公司 | Spheroidizing method of nodular cast iron |
| CN103862004A (en) * | 2013-09-06 | 2014-06-18 | 天津市万路科技有限公司 | Molten iron treatment method |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105420438A (en) * | 2015-12-30 | 2016-03-23 | 广西玉柴机器股份有限公司 | Vermicularizing processor |
| CN105925747A (en) * | 2016-05-26 | 2016-09-07 | 合肥市田源精铸有限公司 | High-performance slag collecting agent |
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| Publication number | Publication date |
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| CN104513879B (en) | 2017-03-22 |
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