CN103243197B - Novel direct continuous casting slag washing mixed material and preparation process thereof - Google Patents
Novel direct continuous casting slag washing mixed material and preparation process thereof Download PDFInfo
- Publication number
- CN103243197B CN103243197B CN201310174550.0A CN201310174550A CN103243197B CN 103243197 B CN103243197 B CN 103243197B CN 201310174550 A CN201310174550 A CN 201310174550A CN 103243197 B CN103243197 B CN 103243197B
- Authority
- CN
- China
- Prior art keywords
- powder
- parts
- ball
- novel
- mixed material
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Treatment Of Steel In Its Molten State (AREA)
Abstract
The invention relates to a novel direct continuous casting slag washing mixed material and a preparation process thereof, and belongs to the field of special-performance alloy and powder metallurgy novel material in metal materials of the novel materials. The novel heating slag washing mixed material comprises the following components in parts by weight: 30-65 parts of aluminum oxide powder, 30-50 parts of quick lime, 1-6 parts of magnesium oxide powder, 0-6 parts of fluorite and 5-6 parts of silicon dioxide powder. The preparation process of the novel heating slag washing mixed material comprises the following steps of: ball-milling the materials in a ball mill to obtain particle powder; press-moulding the ball-milled particle powder by a ball press, smelting in an electric-arc furnace; and adding 5-40 parts of aluminum powder to the molten liquid during a turning down process, and crushing the cooled material into particles. The novel direct continuous casting slag washing mixed material disclosed by the invention can be used for filtering deoxidized desulfurized molten steel very well, so that produced deoxidation products can be caught effectively and modification of impurities in the steel is promoted, so that the purpose of evolving the molten steel is reached.
Description
Technical field
The present invention relates to a kind of straight upper wash heat mixing material and preparation technology thereof, belong to the property alloy in novel material in metallic substance and powder metallurgy field of new.
Background technology
Steel production in China sustainable development, output of steel increases, rolling shapes and quality are close or reach advanced world standards, and converter steelmaking is still Chinese topmost method for making steel at present, converter steelmaking output rises to 5.4 hundred million tons in 2008 from 1998 1.21 hundred million tons, and converter steelmaking ratio then rises to current about 90% from 1998 about 80%.Casting technique there has also been significant progress, kind and the output of continuous casting steel constantly increase, continuous casting ratio from 1998 68.8% be increased to 2008 about 98.86%, along with the raising of continuous casting ratio, lumber recovery also increases substantially, for China's Iron And Steel Industry increase production and improve productivity, energy-saving and emission-reduction have made important contribution.
In China's Iron And Steel Industry, major part is medium and small converter iron and steel enterprise, and casting mode is substantially based on continuous casting, and part iron enterprise is without refining unit, although and refining unit has been gone up by some enterprise but affinability is not enough, caused some steel grade directly not enter continuous casting working procedure by refining.For the present situation of current Iron and Steel Enterprises in China, research and explore a not only only refining but also can smelt the low cost process route of qualified variety steel, for the producer that those affinabilities are not enough or cannot cross refining provides a kind of brand-new thinking.
Summary of the invention
The object of the invention is for solving the problems of the technologies described above, proposing a kind of straight upper wash heat mixing material and preparation technology thereof.
To achieve these goals, the present invention adopts following technical scheme:
A kind of straight upper wash heat mixing material, it is characterized in that, be made up of the component of following parts by weight: alumina powder 30 ~ 65 parts, unslaked lime 30 ~ 50 parts, magnesium oxide powder 1 ~ 6 part, 0 ~ 6 part, fluorite, SiO 2 powder 5 ~ 6 parts, above-mentioned materials is placed in respectively ball mill ball milling and obtains fine-particle powder, again by the fine-particle powder after ball milling after ball press compression moulding, send into melting in electric arc furnace, finally in the process of falling stove, aluminium powder 5 ~ 40 parts is added in liquation, by cooled material fragmentation to particle.
Its step of preparation process is as follows:
(1) ball milling: weigh aluminium powder, alumina powder, unslaked lime, SiO 2 powder, the magnesium oxide powder of getting aforementioned proportion in the balance, be respectively charged in ball grinder, ball milling 20h on tumbling ball mill, rotating speed is 1000r/min, obtains a micron powder;
(2) dry: the slurry obtained by step 1 roller ball mill, put into vacuum drying oven and carry out vacuum-drying, its vacuum tightness is 0 ~-0.35Pa, and drying temperature controls at 35 ~ 100 DEG C, and the time is 20 ~ 54h;
(3) mix: dried micron powder step 2 obtained, except aluminium powder, takes each component raw material by predetermined weight proportioning, is then placed in high-speed mixer Homogeneous phase mixing 5-15min;
(4) again by mixed for step 3 micron powder after ball press compression moulding, send into melting in electric arc furnace, finally in the process of falling stove, aluminium powder 5 ~ 40 parts added in liquation, by cooled material fragmentation to the particle in specialized range.
New fresh lime selected by described unslaked lime, meets superfine or primary standard that YB/T04293 standard specifies.
Described aluminium powder adopts useless assorted aluminium ash after fragmentation, fusing and spraying three operations, as the metallic aluminium powder of straight upper wash heat material.
Described micron powder diameter is 1 ~ 5mm.
Described ball mill Ball-milling Time is 20h, and rotating speed is 1000r/min.
Employing technique scheme only refining can smelt the low cost process route of qualified variety steel, and the one of proposition directly goes up wash heat mixing material, and compared with prior art, its technique effect is:
(1) straight upper wash heat material possesses burn-off rate soon, modest viscosity, good fluidity, and dross inclusion adsorption ability is strong, and slagging speed is fast.
(2) contain activeconstituents in straight upper wash heat material, the S in molten steel stably can be controlled within claimed range.
(3) exothermic material in straight upper wash heat material is utilized can to compensate the temperature drop of molten steel in wash heat process.
(4) use straight upper wash heat material to smelt special steel grade, refining period making foamed slag can realize submerged arc refining, forming white slag fast can effectively shorten the heat, and enhances productivity.
(5) for the steel grade of only refinery practice, straight upper wash heat material can realize making white slag fast, has and strengthens deoxidation, sweetening effectiveness preferably, reduce temperature drop speed.
(6) straight upper wash heat material can improve slag composition, is conducive to the absorption of slag deoxidation, desulfurization, inclusion, purifying of steel.
Embodiment
Below in conjunction with embodiment, the invention will be further described.
Embodiment 1
The straight upper wash heat mixing material of the present embodiment, is made up of the component of following parts by weight: aluminium powder 5 parts, alumina powder 65 parts, unslaked lime 20 parts, SiO 2 powder 6 parts, magnesium oxide powder 4 parts.
Its preparation technology, comprises the steps:
(1) ball milling: weigh aluminium powder, alumina powder, unslaked lime, SiO 2 powder, the magnesium oxide powder of getting aforementioned proportion in the balance, be respectively charged in ball grinder, ball milling 20h on tumbling ball mill, rotating speed is 1000r/min, obtains a micron powder;
(2) dry: the slurry obtained by step 1 roller ball mill, put into vacuum drying oven and carry out vacuum-drying, its vacuum tightness is 0 ~-0.35Pa, and drying temperature controls at 35 ~ 100 DEG C, and the time is 20 ~ 54h;
(3) mix: dried micron powder step 2 obtained, except aluminium powder, takes each component raw material by predetermined weight proportioning, is then placed in high-speed mixer Homogeneous phase mixing 5-15min;
(4) again by mixed for step 3 micron powder after ball press compression moulding, send into melting in electric arc furnace, finally in the process of falling stove, aluminium powder 5 ~ 40 parts added in liquation, by cooled material fragmentation to the particle in specialized range.
The present invention is dried and is used high yield and saving energy flyash dryer model to be XH type.
The present invention's high-speed mixer model used in combination is BL-SRL type.
Embodiment 2
The straight upper wash heat mixing material of the present embodiment, is made up of the component of following parts by weight: aluminium powder 15 parts, alumina powder 55 parts, unslaked lime 20 parts, SiO 2 powder 6 parts, magnesium oxide powder 4 parts.
Its preparation technology is with embodiment 1.
Embodiment 3
The straight upper wash heat mixing material of the present embodiment, is made up of the component of following parts by weight: aluminium powder 25 parts, alumina powder 45 parts, unslaked lime 20 parts, SiO 2 powder 6 parts, magnesium oxide powder 4 parts.
Its preparation technology is with embodiment 1.
Embodiment 4
The straight upper wash heat mixing material of the present embodiment, is made up of the component of following parts by weight: aluminium powder 35 parts, alumina powder 35 parts, unslaked lime 20 parts, SiO 2 powder 6 parts, magnesium oxide powder 4 parts.
Its preparation technology is with embodiment 1.
Embodiment 5
The straight upper wash heat mixing material of the present embodiment, is made up of the component of following parts by weight: aluminium powder 40 parts, alumina powder 30 parts, unslaked lime 20 parts, SiO 2 powder 6 parts, magnesium oxide powder 4 parts.
Its preparation technology is with embodiment 1.
Claims (4)
1. a straight upper wash heat mixing material, it is characterized in that, be made up of the component of following parts by weight: alumina powder 30 ~ 65 parts, unslaked lime 30 ~ 50 parts, magnesium oxide powder 1 ~ 6 part, 0 ~ 6 part, fluorite, SiO 2 powder 5 ~ 6 parts, above-mentioned materials is placed in the common ball milling of ball mill and obtains fine-particle powder, again by the fine-particle powder after ball milling after ball press compression moulding, send into melting in electric arc furnace, finally in the process of falling stove, aluminium powder 5 ~ 40 parts is added in liquation, by cooled material fragmentation to particle; Preparation technology is: (1) ball milling: weigh aluminium powder, alumina powder, unslaked lime, SiO 2 powder, the magnesium oxide powder of getting aforementioned proportion in the balance, be respectively charged in ball grinder, ball milling 20h on tumbling ball mill, rotating speed is 1000r/min, obtains a micron powder; (2) dry: the slurry obtained by step 1 roller ball mill, put into vacuum drying oven and carry out vacuum-drying, its vacuum tightness is 0 ~-0.35Pa, and drying temperature controls at 35 ~ 100 DEG C, and the time is 20 ~ 54h; (3) mix: dried micron powder step 2 obtained, except aluminium powder, takes each component raw material by predetermined weight proportioning, is then placed in high-speed mixer Homogeneous phase mixing 5-15min; (4) again by mixed for step 3 micron powder after ball press compression moulding, send into melting in electric arc furnace, finally in the process of falling stove, aluminium powder 5 ~ 40 parts added in liquation, by cooled material fragmentation to the particle in specialized range.
2. straight upper wash heat mixing material according to claim 1, is characterized in that: new fresh lime selected by described unslaked lime, meets superfine or primary standard that YB/T04293 standard specifies.
3. straight above wash heat mixing material according to claim 1, is characterized in that: described aluminium powder adopts useless assorted aluminium ash after fragmentation, fusing and spraying three operations, as the metallic aluminium powder of straight upper wash heat material.
4. straight upper wash heat mixing material according to claim 1, is characterized in that: described micron powder diameter is 1 ~ 5mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310174550.0A CN103243197B (en) | 2013-05-13 | 2013-05-13 | Novel direct continuous casting slag washing mixed material and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310174550.0A CN103243197B (en) | 2013-05-13 | 2013-05-13 | Novel direct continuous casting slag washing mixed material and preparation process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103243197A CN103243197A (en) | 2013-08-14 |
| CN103243197B true CN103243197B (en) | 2014-12-31 |
Family
ID=48923073
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310174550.0A Expired - Fee Related CN103243197B (en) | 2013-05-13 | 2013-05-13 | Novel direct continuous casting slag washing mixed material and preparation process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103243197B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107739776A (en) * | 2017-09-20 | 2018-02-27 | 刘继唐 | Calcium aluminium composite deoxidant |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1056415C (en) * | 1998-04-07 | 2000-09-13 | 幸超 | Aluminium-contained premelting slag and preparation method therefor, and molten steel desulfurizer and purifier containing same |
| CN1179055C (en) * | 2000-04-29 | 2004-12-08 | 幸超 | Slag modifier for refining molten steel |
| CN101503747B (en) * | 2009-03-12 | 2010-07-28 | 浙江杭美炉料制造有限公司 | Heating steel slag washing material for converter steel melting, preparation and use method |
| CN101497934B (en) * | 2009-03-12 | 2011-04-20 | 浙江杭美炉料制造有限公司 | Heating slag washing material for converter steel melting, preparation and use method thereof |
| CN101984088B (en) * | 2010-11-16 | 2012-06-13 | 东北大学 | Method for preparing premelted refining slag by using converter slag and aluminum slag |
| CN102071279B (en) * | 2010-12-21 | 2012-09-26 | 沈阳东大材料先进制备技术工程研究中心 | Slag washing material for converter process production aluminum killed steel and preparation method thereof |
| CN102586544B (en) * | 2012-03-20 | 2014-04-09 | 西峡县恒基冶材有限公司 | High-calcium pre-molten slag modification aluminium slag ball and preparation method thereof |
-
2013
- 2013-05-13 CN CN201310174550.0A patent/CN103243197B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN103243197A (en) | 2013-08-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106048109B (en) | A kind of method for mixing the recycling of slag melting and reducing and modifier treatment | |
| KR20180125572A (en) | A method of melting and reducing iron by stirring vortex | |
| CN102586544B (en) | High-calcium pre-molten slag modification aluminium slag ball and preparation method thereof | |
| CN102399998B (en) | Method for reducing and smelting titania slag by utilizing vanadium-titanium-iron ore concentrates in molten state | |
| CN106480307B (en) | A method of improving homogeneous agglomerate | |
| CN106435086B (en) | A kind of semi-steel making carburetting slagging agent and its application method | |
| CN102912158A (en) | Method for smelting ferrovanadium by fine vanadium slag | |
| CN107555435A (en) | A kind of method that carbon thermal reduction titanium-containing blast furnace slag prepares titanium carbide | |
| CN115323099A (en) | Steelmaking method for recycling magnetic separation steel slag by converter | |
| CN102936635B (en) | Method for extracting iron and titanium from ilmenite-containing concentrate | |
| CN103526066A (en) | Continuous process for producing manganese-silicon alloy and slag rich in silicomanganese and producing micro-and low-carbon manganese-silicon alloy by utilization of slag rich in silicomanganese | |
| CN103014369A (en) | Smelting process of both side-blown bath | |
| CN101643805B (en) | New method for producing high-quality high titanium slag | |
| CN106435310B (en) | A kind of technique with grate ferrosilicon process refining manganese silico-aluminum | |
| CN105087864A (en) | Method for directly producing titanium carbide from vanadium titano-magnetite | |
| CN103866133B (en) | The device for refining and its application method of silicomangan tailings | |
| CN102010159A (en) | Energy-saving type air permeable brick and preparation method thereof | |
| CN109628761A (en) | A method of stibium trioxide is produced using high antimony secondary smoke dearsenification | |
| CN103243197B (en) | Novel direct continuous casting slag washing mixed material and preparation process thereof | |
| CN101435020A (en) | Method for producing titanium-rich material from titanium ore concentrate | |
| CN105648149A (en) | Molten steel refining slag forming agent and manufacturing process thereof | |
| CN110157860B (en) | Refining slag for purification and dealumination of ferrosilicon and preparation method thereof | |
| CN101225482A (en) | Ferrotitanium alloy electric induction furnace smelting method | |
| CN103627898B (en) | Machine shaping method of magnetic separation powder, and application of finished product prepared by method | |
| CN107190138A (en) | A kind of method and device that manganese-silicon is prepared using poor ferrous manganese ore |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141231 Termination date: 20170513 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |