CN112501385B - Preparation method of iron-aluminum composite deoxidant - Google Patents
Preparation method of iron-aluminum composite deoxidant Download PDFInfo
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- CN112501385B CN112501385B CN202011465380.8A CN202011465380A CN112501385B CN 112501385 B CN112501385 B CN 112501385B CN 202011465380 A CN202011465380 A CN 202011465380A CN 112501385 B CN112501385 B CN 112501385B
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/83—Mixing plants specially adapted for mixing in combination with disintegrating operations
- B01F33/833—Devices with several tools rotating about different axis in the same receptacle
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/836—Mixing plants; Combinations of mixers combining mixing with other treatments
- B01F33/8361—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating
- B01F33/83612—Mixing plants; Combinations of mixers combining mixing with other treatments with disintegrating by crushing or breaking
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
- C22C1/026—Alloys based on aluminium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C21/00—Alloys based on aluminium
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- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Mechanical Engineering (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mixers Of The Rotary Stirring Type (AREA)
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention belongs to the technical field of smelting application, and particularly discloses a preparation method of an iron-aluminum composite deoxidant, which consists of 15-25% of iron, 45-70% of aluminum and 5-10% of residual impurities, wherein a mixing stirrer is used for mixing and crushing before smelting, the prepared raw materials are poured into an induction furnace during smelting, then heating is continued, pouring is controlled, liquid in the induction furnace is poured into a fixed mold pot, the liquid is naturally cooled to room temperature, and finally the liquid is crushed into required particle size, and a finished product of the iron-aluminum composite deoxidant is obtained after double-layer peritoneal packaging. The invention has the beneficial effects that: the iron-aluminum composite deoxidant product prepared by the method can rapidly react with oxygen dissolved in molten iron, meets the high-standard deoxidization requirement, improves the yield, has a reasonable overall structure design, is convenient to assemble and disassemble for cleaning and maintenance, has long service life, reduces the production economic cost of the iron-aluminum composite deoxidant, and has strong practicability.
Description
Technical Field
The invention belongs to the technical field of smelting application, and particularly relates to a preparation method of an iron-aluminum composite deoxidant.
Background
The deoxidizer may be classified into two types according to its composition: (1) the deoxidant with inorganic base as main body, such as reduced iron powder, is prepared through oxidizing iron powder into iron hydroxide in the presence of oxygen and water vapor, and reacting dithionite as main component and Ca (OH)2 and active carbon as auxiliary components in water environment; (2) mainly comprises organic matrix such as enzymes, ascorbic acid, oleic acid, etc. Ascorbic Acid (AA) is a reducing agent, under the condition of oxygen, copper ions are used as a catalyst to oxidize or dehydrogenate ascorbic acid (DHAA) so as to remove oxygen in the environment, oxygen in liquid food is removed by a common method, an ascorbic acid deoxidizer is one of the currently used deoxidizers with higher safety, an enzyme deoxidizer is commonly used for oxidizing alcohol with glucose, and the aim of deoxidation is achieved by using oxygen consumed when the glucose is oxidized into the gluconic acid.
The deoxidizer for steelmaking mainly comprises silicon-aluminum-barium-calcium-iron, silicon-calcium core-spun yarn, aluminum wire, aluminum-manganese-iron, steel-cored aluminum, calcium carbide, silicon carbide and the like, and mainly has the main functions of reacting with oxygen dissolved in molten iron, mainly generating non-metallic compounds, forming precipitates to float to a slag layer, removing the precipitates to obtain pure molten iron, and further improving the yield.
Therefore, based on the above problems, the present invention provides a method for preparing an iron-aluminum composite oxygen scavenger.
Disclosure of Invention
The purpose of the invention is as follows: the invention aims to provide a preparation method of an iron-aluminum composite deoxidant, the prepared iron-aluminum composite deoxidant product can rapidly react with oxygen dissolved in molten iron, meets the high-standard deoxidization requirement, improves the yield, and meanwhile, a mixing stirrer during preparation has reasonable integral structure design, is convenient to assemble and disassemble for cleaning and maintenance, has long service life, reduces the production economic cost of the iron-aluminum composite deoxidant and has strong practicability.
The technical scheme is as follows: the invention provides a preparation method of an iron-aluminum composite deoxidant, which comprises the following steps of mixing and crushing 15-25% of iron, 45-70% of aluminum and 5-10% of residual impurities, wherein a mixing stirrer is used for mixing and crushing before smelting, the prepared raw materials are poured into an induction furnace during smelting, the temperature is increased to 400-480 ℃, the temperature is kept for 60-90 minutes, the temperature is increased to 1500-1800 ℃ during continuous heating, the pouring temperature is controlled to 1200-1400 ℃, liquid in the induction furnace is poured into a fixed mould pot, the liquid is naturally cooled to the room temperature, and finally the liquid is crushed into required particle size and packaged by double-layer peritoneum to obtain the finished product of the iron-aluminum composite deoxidant.
According to the technical scheme, the mixing stirrer consists of a vertical box body assembly, a box cover assembly matched with the vertical box body assembly for use, and a stirring assembly matched with the vertical box body assembly for use; the vertical box body component comprises a box body, a group of vertical supporting plates arranged on the bottom surface of the box body, a transverse positioning plate arranged at one end of the group of vertical supporting plates respectively, transverse positioning plate fixing through holes arranged in four corners of the transverse positioning plate, a sealing cover limiting groove arranged on one surface of the box body, a stirring tank arranged in one surface of the box body, a vertical material guide channel arranged in the box body and positioned below the stirring tank, a material outlet cavity arranged in one side of the lower part of the box body and matched with the vertical material guide channel for use, a circular connecting plate arranged on the outer wall of the bottom surface of the box body and matched with the material outlet cavity for use, a material outlet conduit connected with the circular connecting plate, first auxiliary transverse through holes and second auxiliary transverse through holes symmetrically arranged in the box body and positioned at two sides of the vertical material guide channel, and first bearings and second bearings respectively arranged in the first auxiliary transverse through holes and the second auxiliary transverse through holes, the two ends of the rotating shaft respectively penetrate through the first bearing and the second bearing, wherein one end of the rotating shaft protrudes out of the second auxiliary transverse through hole, the spiral conveying teeth are arranged on the rotating shaft in a staggered mode, the first auxiliary sealing ring and the second auxiliary sealing ring are respectively arranged in the first auxiliary transverse through hole and the second auxiliary transverse through hole and matched with the rotating shaft for use, the third driving motor mounting plate is arranged on the outer wall of one side of the lower portion of the box body, the third driving motor is mounted on the third driving motor mounting plate, and a third coupler is respectively connected with the rotating shaft and the third driving motor; the box cover assembly comprises an n-shaped positioning plate arranged on the side wall of the upper part of the box body, a cylinder mounting hole arranged in the n-shaped positioning plate, a cylinder arranged on the n-shaped positioning plate through the cylinder mounting hole, a connecting screw rod arranged at one end of the cylinder, a sealing cover matched with the cylinder and a limiting groove of the sealing cover, a sealing cover connecting seat arranged on one surface of the sealing cover, and a screw rod connecting hole arranged in one surface of the sealing cover connecting seat, wherein the connecting screw rod is connected with the screw rod connecting hole, and a locking nut arranged on the connecting screw rod; the stirring assembly comprises a group of transverse through holes which are symmetrically arranged in the box body and positioned at two sides of the stirring tank, a bearing positioning sleeve which is symmetrically arranged on the outer wall of the box body and matched with the group of transverse through holes, a first stirring shaft with a bearing positioning sleeve and two ends respectively penetrating through the group of transverse through holes and the bearing positioning sleeve, a plurality of first crushing stirring teeth arranged on the first stirring shaft, a first driving motor mounting plate which is arranged on the outer wall of one side of the box body and positioned below the bearing positioning sleeve, a first driving motor arranged on the first driving motor mounting plate, a first coupler which is respectively connected with the first driving motor and the first stirring shaft, a first sealing ring which is respectively arranged in the group of transverse through holes and matched with the first stirring shaft, a second transverse through hole, a third transverse through hole which are symmetrically arranged in the box body and positioned below the group of transverse through holes, and a second driving motor mounting plate which is arranged on the outer wall of the other side of the box body and positioned below the bearing positioning sleeve, the second driving motor is arranged on the second driving motor mounting plate, the supporting bearing is arranged in the third transverse through hole, the second stirring shaft is provided with two ends respectively penetrating through the supporting bearing and the second transverse through hole, the second stirring teeth are arranged on the second stirring shaft in a plurality of second crushing stirring teeth, and the second coupler is respectively connected with the second stirring shaft and the second driving motor.
According to the technical scheme, the preparation method of the iron-aluminum composite deoxidant further comprises a filter plate which is arranged at the bottom of the stirring tank and is positioned between the plurality of second crushing stirring teeth and the vertical material guide channel, wherein the stirring tank is of a U-shaped structure.
According to the technical scheme, the diameter sizes of the group of transverse through holes and the third transverse through hole are the same and are respectively larger than the diameter size of the second transverse through hole.
According to the technical scheme, the diameter size of the first auxiliary transverse through hole is the same as that of the second auxiliary transverse through hole.
According to the technical scheme, the box body is of a circular structure or a square structure.
Compared with the prior art, the preparation method of the iron-aluminum composite deoxidant has the beneficial effects that: the iron-aluminum composite deoxidant product prepared by the method can rapidly react with oxygen dissolved in molten iron, meets the requirement of high-standard deoxidization, improves the yield, has a reasonable overall structure design, is convenient to assemble and disassemble for cleaning and maintenance, has long service life, reduces the production economic cost of the iron-aluminum composite deoxidant, and is strong in practicability.
Drawings
FIG. 1 is a schematic structural diagram of a mixing stirrer in a preparation method of an iron-aluminum composite oxygen scavenger.
Detailed Description
The invention is further elucidated with reference to the drawings and the embodiments.
Examples
The invention relates to a preparation method of an iron-aluminum composite deoxidant, which consists of 15-25% of iron, 45-70% of aluminum and 5-10% of residual impurities, wherein a mixing stirrer is used for mixing and crushing before smelting, the prepared raw materials are poured into an induction furnace during smelting, the temperature is raised to 400-480 ℃ and kept for 60-90 minutes, the temperature is raised to 1500-1800 ℃ during continuous heating, then the pouring temperature is controlled to 1200-1400 ℃, liquid in the induction furnace is poured into a fixed mould pot, is naturally cooled to room temperature, is crushed into required particle size, and is packaged by a double-layer peritoneum to obtain an iron-aluminum composite deoxidant finished product.
The mixing stirrer of the preparation method of the iron-aluminum composite deoxidant shown in the figure 1 consists of a vertical box body assembly, a box cover assembly matched with the vertical box body assembly for use, and a stirring assembly matched with the vertical box body assembly for use; the vertical box body component comprises a box body 4, a group of vertical supporting plates 3 arranged on the bottom surface of the box body 4, a transverse positioning plate 1 arranged at one end of the group of vertical supporting plates 3 respectively, transverse positioning plate fixing through holes 2 arranged in four corners of the transverse positioning plate 1, a sealing cover limiting groove 10 arranged on one surface of the box body 4, a stirring tank 14 arranged in one surface of the box body 4, a vertical material guiding channel 15 arranged in the box body 4 and positioned below the stirring tank 14, a material discharging cavity 47 arranged in one side of the lower part of the box body 4 and matched with the vertical material guiding channel 15, a circular connecting plate 16 arranged on the outer wall of the bottom surface of the box body 4 and matched with the material discharging cavity 47, a material discharging conduit 17 connected with the circular connecting plate 16, a first auxiliary transverse through hole 39, a second auxiliary transverse through hole 40 symmetrically arranged in the box body 4 and positioned at two sides of the vertical material guiding channel 15, and a first auxiliary transverse through hole 39, a second auxiliary transverse through hole 40, a second auxiliary transverse through hole and a third through hole 39, a third auxiliary through hole, a fourth through which is arranged on the second auxiliary transverse through hole, a fourth through which is arranged in a fourth through hole, a fourth through hole, a fourth through which is arranged in a fourth through hole, a fourth through hole, a first bearing 41 and a second bearing 42 in the second auxiliary transverse through hole 40, a rotating shaft 43 with two ends respectively penetrating the first bearing 41 and the second bearing 42, wherein one end of the rotating shaft 43 protrudes out of the second auxiliary transverse through hole 40, a spiral conveying tooth 46 arranged on the rotating shaft 43 in a staggered manner, a first auxiliary sealing ring 45 and a second auxiliary sealing ring 44 which are respectively arranged in the first auxiliary transverse through hole 39 and the second auxiliary transverse through hole 40 and are matched with the rotating shaft 43 for use, a third driving motor mounting plate 36 arranged on the outer wall of one side of the lower part of the box body 4, a third driving motor 37 arranged on the third driving motor mounting plate 36, and a third coupler 38 respectively connected with the rotating shaft 43 and the third driving motor 37; the box cover assembly comprises an n-shaped positioning plate 5 arranged on the side wall of the upper part of the box body 4, a cylinder mounting hole 6 arranged in the n-shaped positioning plate 5, a cylinder 7 arranged on the n-shaped positioning plate 5 through the cylinder mounting hole 6, a connecting screw 8 arranged at one end of the cylinder 7, a sealing cover 11 matched with the cylinder 7 and a sealing cover limiting groove 10 for use, a sealing cover connecting seat 12 arranged on one surface of the sealing cover 11, and a screw connecting hole 13 arranged in one surface of the sealing cover connecting seat 12, wherein the connecting screw 8 is connected with the screw connecting hole 13, and a locking nut 9 arranged on the connecting screw 8; the stirring assembly comprises a group of transverse through holes 21 which are symmetrically arranged in the box body 4 and are positioned at two sides of the stirring tank 14, a bearing positioning sleeve 20 which is symmetrically arranged on the outer wall of the box body 4 and is matched with the group of transverse through holes 21 for use, a first stirring shaft 22 with two ends respectively penetrating through the group of transverse through holes 21 and the bearing positioning sleeve 20, a plurality of first crushing stirring teeth 23 arranged on the first stirring shaft 22, a first driving motor mounting plate 18 which is arranged on the outer wall of one side of the box body 4 and is positioned below the bearing positioning sleeve 20, a first driving motor 19 arranged on the first driving motor mounting plate 18, a first coupler 24 respectively connected with the first driving motor 19 and the first stirring shaft 22, a first sealing ring 25 which is respectively arranged in the group of transverse through holes 21 and is matched with the first stirring shaft 22 for use, and a second transverse through hole 29 which is symmetrically arranged in the box body 4 and is positioned below the group of transverse through holes 21, A third transverse through hole 30, a second driving motor mounting plate 26 which is arranged on the outer wall of the other side of the box body 4 and is positioned below the positioning sleeve with bearing 20, a second driving motor 27 which is arranged on the second driving motor mounting plate 26, a supporting bearing 31 which is arranged in the third transverse through hole 30, a second stirring shaft 33 of which two ends respectively penetrate through the supporting bearing 31 and the second transverse through hole 29, a plurality of second crushing stirring teeth 34 which are arranged on the second stirring shaft 33, and a second coupler 28 which is respectively connected with the second stirring shaft 33 and the second driving motor 27.
Further preferably, the mixing and stirring machine of the preparation method of the iron-aluminum composite oxygen scavenger shown in fig. 1 further includes a filter plate 35 disposed at the bottom of the stirring tank 14 and located between the plurality of second crushing and stirring teeth 34 and the vertical material guiding channel 15, wherein the stirring tank 14 is configured to be a U-shaped structure; the diameter sizes of the group of transverse through holes 21 and the third transverse through hole 30 are the same and are respectively larger than that of the second transverse through hole 29; and the diameter size of the first auxiliary transverse through hole 39 is the same as that of the second auxiliary transverse through hole 40; and the box body 4 is arranged into a round structure or a square structure.
Further preferably, in the mixing and stirring machine of the preparation method of the iron-aluminum composite oxygen scavenger shown in fig. 1, the vertical material guiding channel 15 is set to be a conical structure.
According to the preparation method of the iron-aluminum composite deoxidant, the prepared iron-aluminum composite deoxidant product can rapidly react with oxygen dissolved in molten iron, meets the high-standard deoxidization requirement, improves the yield, and meanwhile, the mixing stirrer during preparation has the advantages of reasonable overall structure design, convenience in assembly and disassembly for cleaning and maintenance, long service life, reduction in the production economic cost of the iron-aluminum composite deoxidant and strong practicability.
The foregoing is only a preferred embodiment of this invention and it should be noted that modifications can be made by those skilled in the art without departing from the principle of the invention and these modifications should also be considered as the protection scope of the invention.
Claims (5)
1. A preparation method of an iron-aluminum composite deoxidant is characterized by comprising the following steps: the composite deoxidant consists of residual impurities with iron content of 15-25%, aluminum content of 45-70% and aluminum content of 5-10%, wherein a mixing stirrer is used for mixing and crushing before smelting, the prepared raw materials are poured into an induction furnace during smelting, the temperature is raised to 400-480 ℃, the temperature is kept for 60-90 minutes, the temperature is raised to 1500-1800 ℃ during continuous heating, then the pouring temperature is controlled to 1200-1400 ℃, liquid in the induction furnace is poured into a fixed mould pot, the liquid is naturally cooled to room temperature, and finally the liquid is crushed into required particle size and packaged by a double-layer peritoneum to obtain an iron-aluminum composite deoxidant finished product;
the mixing stirrer consists of a vertical box body assembly, a box cover assembly matched with the vertical box body assembly for use, and a stirring assembly matched with the vertical box body assembly for use; the vertical box body component comprises a box body (4), a group of vertical supporting plates (3) arranged on the bottom surface of the box body (4), a transverse positioning plate (1) respectively arranged at one end of the group of vertical supporting plates (3), transverse positioning plate fixing through holes (2) arranged in four corners of the transverse positioning plate (1), a sealing cover limiting groove (10) arranged on one surface of the box body (4), a stirring tank (14) arranged on one surface of the box body (4), a vertical material guide channel (15) arranged in the box body (4) and positioned below the stirring tank (14), a material discharging cavity (47) arranged in one side of the lower part of the box body (4) and matched with the vertical material guide channel (15), a circular connecting plate (16) arranged on the outer wall of the bottom surface of the box body (4) and matched with the material discharging cavity (47), and a material discharging guide pipe (17) connected with the circular connecting plate (16), a first auxiliary transverse through hole (39) and a second auxiliary transverse through hole (40) which are symmetrically arranged in the box body (4) and are positioned at two sides of the vertical material guide channel (15), a first bearing (41) and a second bearing (42) which are respectively arranged in the first auxiliary transverse through hole (39) and the second auxiliary transverse through hole (40), a rotating shaft (43) of which two ends respectively penetrate through the first bearing (41) and the second bearing (42), wherein one end of the rotating shaft (43) protrudes out of the second auxiliary transverse through hole (40), a spiral material conveying tooth (46) which is arranged on the rotating shaft (43) in a staggered way, a first auxiliary sealing ring (45) and a second auxiliary sealing ring (44) which are respectively arranged in the first auxiliary transverse through hole (39) and the second auxiliary transverse through hole (40) and are matched with the rotating shaft (43) for use, and a third driving motor mounting plate (36) which is arranged on the outer wall at one side of the lower part of the box body (4), the third driving motor (37) is arranged on the third driving motor mounting plate (36), and the third coupling (38) is respectively connected with the rotating shaft (43) and the third driving motor (37); the box cover assembly comprises an n-shaped positioning plate (5) arranged on the side wall of the upper part of the box body (4), a cylinder mounting hole (6) arranged in the n-shaped positioning plate (5), a cylinder (7) arranged on the n-shaped positioning plate (5) through the cylinder mounting hole (6), a connecting screw rod (8) arranged at one end of the cylinder (7), a sealing cover (11) matched with the cylinder (7) and a sealing cover limiting groove (10) for use, a sealing cover connecting seat (12) arranged on one surface of the sealing cover (11), and a screw rod connecting hole (13) arranged on one surface of the sealing cover connecting seat (12), wherein the connecting screw rod (8) is connected with the screw rod connecting hole (13), and a locking nut (9) arranged on the connecting screw rod (8); the stirring assembly comprises a group of transverse through holes (21) which are symmetrically arranged in the box body (4) and are positioned at two sides of the stirring tank (14), a bearing positioning sleeve (20) which is symmetrically arranged on the outer wall of the box body (4) and is matched with the group of transverse through holes (21), a first stirring shaft (22) of which two ends respectively penetrate through the group of transverse through holes (21) and the bearing positioning sleeve (20), a plurality of first crushing stirring teeth (23) arranged on the first stirring shaft (22), a first driving motor mounting plate (18) which is arranged on the outer wall of one side of the box body (4) and is positioned below the bearing positioning sleeve (20), a first driving motor (19) arranged on the first driving motor mounting plate (18), a first coupler (24) which is respectively connected with the first driving motor (19) and the first stirring shaft (22), and a first sealing ring (25) which is respectively arranged in the group of transverse through holes (21) and is matched with the first stirring shaft (22), and a second transverse through hole (29) and a third transverse through hole (30) which are symmetrically arranged in the box body (4) and are positioned below the group of transverse through holes (21), a second driving motor mounting plate (26) which is arranged on the outer wall of the other side of the box body (4) and is positioned below the bearing positioning sleeve (20), a second driving motor (27) which is arranged on the second driving motor mounting plate (26), a supporting bearing (31) which is arranged in the third transverse through hole (30), a second stirring shaft (33) which is provided with two ends respectively penetrating through the supporting bearing (31) and the second transverse through hole (29), a plurality of second crushing stirring teeth (34) which are arranged on the second stirring shaft (33), and a second coupler (28) which is respectively connected with the second stirring shaft (33) and the second driving motor (27).
2. The preparation method of the iron-aluminum composite oxygen scavenger according to claim 1, characterized by comprising the following steps: the preparation method of the iron-aluminum composite deoxidant further comprises a filter plate (35) which is arranged at the bottom of the stirring tank (14) and is positioned between the second crushing stirring teeth (34) and the vertical material guide channel (15), wherein the stirring tank (14) is of a U-shaped structure.
3. The preparation method of the iron-aluminum composite oxygen scavenger according to claim 1, characterized by comprising the following steps: the diameter sizes of the group of transverse through holes (21) and the third transverse through hole (30) are the same and are respectively larger than that of the second transverse through hole (29).
4. The preparation method of the iron-aluminum composite oxygen scavenger according to claim 1, characterized by comprising the following steps: the diameter of the first auxiliary transverse through hole (39) is the same as the diameter of the second auxiliary transverse through hole (40).
5. The preparation method of the iron-aluminum composite oxygen scavenger according to claim 1, characterized by comprising the following steps: the box body (4) is arranged to be of a round structure or a square structure.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011465380.8A CN112501385B (en) | 2020-12-14 | 2020-12-14 | Preparation method of iron-aluminum composite deoxidant |
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| CN202011465380.8A CN112501385B (en) | 2020-12-14 | 2020-12-14 | Preparation method of iron-aluminum composite deoxidant |
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| CN112501385B true CN112501385B (en) | 2022-06-24 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1202268C (en) * | 2002-05-29 | 2005-05-18 | 河南省西峡县保护材料集团有限公司 | Pure aluminium iron compound deoxidant and its production process |
| KR101441302B1 (en) * | 2012-12-24 | 2014-11-03 | 주식회사 포스코 | Stainless steel and method of manufacturing the same |
| CN103184313B (en) * | 2013-03-29 | 2014-09-03 | 河南科技大学 | Steel making composite deoxygenation agent and preparation method thereof |
| CN107224927A (en) * | 2017-07-31 | 2017-10-03 | 江苏贝力机械制造有限公司 | A kind of two-stage stainless steel stirring mixer and its method of work |
| CN110453040A (en) * | 2019-08-14 | 2019-11-15 | 上海盛宝冶金科技有限公司 | A kind of alumal deoxidier and its deoxidation in steel making method |
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