CN101116908A - White olivine ladle draining sand and method for preparing the same - Google Patents
White olivine ladle draining sand and method for preparing the same Download PDFInfo
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- CN101116908A CN101116908A CNA2007100531104A CN200710053110A CN101116908A CN 101116908 A CN101116908 A CN 101116908A CN A2007100531104 A CNA2007100531104 A CN A2007100531104A CN 200710053110 A CN200710053110 A CN 200710053110A CN 101116908 A CN101116908 A CN 101116908A
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Abstract
The invention relates to forsterite based ladle drainage sand and the preparation method thereof. The adopted technical proposal is that: firstly 86 to 96 percent by weight of forsterite sand, 1 to 6 percent by weight of crystalline flake graphite, 1 to 8 percent by weight of feldspar in powder and 0.5 to 2 percent by weight of carbon micro powder are uniformly mixed, then are packaged according to 5 to 15 kg per bag in order to avoid the aliquation of materials. The content of MgO in forsterite sand is not less than 41.0 percent by weight and the grain diameter is 0.3 to 2.5 mm. The content of C in crystalline flake graphite is not less than 95 percent by weight and the grain diameter is 0 to 0.15 mm. The content of K2O in feldspar in powder is not less than 10 percent by weight and the grain diameter is 0 to 0.045 mm. The content of C in carbon micro powder is not less than 85 weight percent and the grain diameter is 0 to 0.020 mm. Taking the forsterite sand as the basic material, the prepared production has the characteristics of good high temperature resistance, high rate of automatic start-up, low price, no unfavorable influence on human body, no aliquation and convenient use.
Description
Technical field
The invention belongs to the forsterite sand is the fire resisting material field of base-material.Relate in particular to a kind of white olivine ladle draining sand and preparation method thereof.
Background technology
The fast development of continuous casting technology and extensive use in the steel industry, ladle employing slide gate nozzle installs drainage sand additional and has replaced original ceramic stopper, when opening slide gate nozzle, under the guiding of drainage sand, molten steel in the ladle can be through filling pipe end, upper slide steel outlet hole, lower skateboard steel outlet hole, the mouth of a river and flowing out voluntarily down, and carries out continuous casting steel machine through long nozzle inflow continuous casting tundish.The effect of drainage sand is: when containing steel, its upper surface of drainage sand that is filled in the ladle nozzle has produced thin sinter layer under the heat effect of high-temperature molten steel, form " housing ", has stoped the infiltration and following leakage of molten steel, is beneficial to ladle and transports and handle molten steel; During tapping, in case lower skateboard is opened, " housing " descends most unsintered drainage sand free-falling (drainage), and " housing " that cause losing support crushed by the static pressure of molten steel, and molten steel flows out (automatic casting is promptly from opening) automatically.Along with people need raising and the guarantee steel-making quantity-produced that steel quality requires, the ladle automatic casting also just receives much attention, ladle is if can not then will adopt the boiled way of oxygen rifle to assist drainage by automatic casting, this will cause a considerable amount of molten steel to open wide cast, cause secondary oxidation of steel, influence steel quality, increase and water the steel cost, also can threaten equipment and operating personnel's safety simultaneously, the continuous production of the influence steel-making that wastes time.
For this reason, steel plant have taked a lot of measures to improve the automatic casting ratio of ladle both at home and abroad, and the key that improves the ladle self-opening rate is to improve the performance of drainage sand.Be to improve the performance of drainage sand, the producer that has has adopted refining quartz sand as primary raw material (CN1165798), and still, processing and refining quartz sand can cause production cost to improve, and processing siliceous dust that quartz sand produces simultaneously, can to have a strong impact on the workman healthy.Adopt the drainage sand of chromogen ore in sand form production to help improving casting rate (CN1524648), but the costing an arm and a leg of chromogen ore in sand form, cost is too high, and chromium oxide at high temperature can volatilize Cr VI, and is harmful.The price of forsterite sand is low, heat-resisting quantity good, be the desirable feedstock of preparation drainage sand, but the producer that uses seldom at present, there are two tame enterprises to adopt forsterite sand to participate in batching production drainage sand (CN1267652, CN1509827), but select for use the particle diameter of forsterite sand excessive, influence self-opening rate, and added more fused magnesite and chromogen ore in sand form, improved cost.
Summary of the invention
Task of the present invention provides that a kind of heat-resisting quantity is good, self-opening rate is high, cheap, human body is not had adverse effect, not segregation, white olivine ladle draining sand easy to use and preparation method thereof.
For realizing above-mentioned task, the technical solution adopted in the present invention is: earlier the forsterite sand of 86～96wt%, the crystalline flake graphite of 1～6wt%, the feldspar in powder of 1～8wt%, the carbonaceous micro mist of 0.5～2wt% are mixed, then by every bag of 5～15Kg bag distribution packaging.
Wherein: the MgO content 〉=41.0wt% of forsterite sand, particle diameter are 0.3～2.5mm, and the C content 〉=95.0wt% of crystalline flake graphite, particle diameter are 0～0.15mm, the K of feldspar in powder
2O content 〉=10.0wt%, particle diameter are 0～0.045mm, and the C content 〉=85.0wt% of carbonaceous micro mist, particle diameter are 0～0.020mm.
Because adopt technique scheme, the present invention is base-material with the forsterite sand, prepared white olivine ladle draining sand has that heat-resisting quantity is good, self-opening rate is high, cheap, human body is not had adverse effect, not segregation, characteristics easy to use.
The specific embodiment
The invention will be further described below in conjunction with embodiment:
Embodiment 1
A kind of white olivine ladle draining sand and preparation method thereof.Earlier the forsterite sand of 92～96wt%, the crystalline flake graphite of 1～4wt%, the feldspar in powder of 1～5wt%, the carbonaceous micro mist of 0.5～1wt% are mixed, then according to every bag of 5～15Kg bag distribution packaging, to prevent the material segregation.
Wherein: the MgO content 〉=41.0wt% of forsterite sand, particle diameter are 0.3～2.5mm, and the C content 〉=95.0wt% of crystalline flake graphite, particle diameter are 0～0.15mm, the K of feldspar in powder
2O content 〉=10.0wt%, particle diameter are 0～0.045mm, and the C content 〉=85.0wt% of carbonaceous micro mist, particle diameter are 0～0.020mm..
Embodiment 2
A kind of white olivine ladle draining sand and preparation method thereof.Earlier the forsterite sand of 86～92wt%, the crystalline flake graphite of 3～6wt%, the feldspar in powder of 3～8wt%, the carbonaceous micro mist of 0.5～2wt% are mixed, then according to every bag of 5～15Kg bag distribution packaging, to prevent the material segregation.
Wherein: the MgO content 〉=41.0wt% of forsterite sand, particle diameter are 0.3～2.5mm, and the C content 〉=95.0wt% of crystalline flake graphite, particle diameter are 0～0.15mm, the K of feldspar in powder
2O content 〉=10.0wt%, particle diameter are 0～0.045mm, and the C content 〉=85.0wt% of carbonaceous micro mist, particle diameter are 0～0.020mm.
This specific embodiment is take forsterite sand as base-material, prepared white olivine ladle draining sand have heat-resisting quantity good, The self-opening rate height, cheap, human body is not had adverse effect, not segregation, characteristics easy to use.
Claims (3)
1. the preparation method of a white olivine ladle draining sand, it is characterized in that earlier the forsterite sand of 86～96wt%, the crystalline flake graphite of 1～6wt%, the feldspar in powder of 1～8wt%, the carbonaceous micro mist of 0.5～2wt% being mixed, then by every bag of 5～15Kg bag distribution packaging.
2. the preparation method of white olivine ladle draining sand according to claim 1, MgO content 〉=the 41.0wt%, the particle diameter that it is characterized in that described forsterite sand are 0.3～2.5mm, C content 〉=the 95.0wt% of crystalline flake graphite, particle diameter are 0～0.15mm, the K of feldspar in powder
2O content 〉=10.0wt%, particle diameter are 0～0.045mm, and the C content 〉=85.0wt% of carbonaceous micro mist, particle diameter are 0～0.020mm..
3. according to the prepared white olivine ladle draining sand of preparation method of each described white olivine ladle draining sand in the claim 1～2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100531104A CN100475387C (en) | 2007-09-03 | 2007-09-03 | White olivine ladle draining sand and method for preparing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100531104A CN100475387C (en) | 2007-09-03 | 2007-09-03 | White olivine ladle draining sand and method for preparing the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101116908A true CN101116908A (en) | 2008-02-06 |
| CN100475387C CN100475387C (en) | 2009-04-08 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007100531104A Expired - Fee Related CN100475387C (en) | 2007-09-03 | 2007-09-03 | White olivine ladle draining sand and method for preparing the same |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101444842B (en) * | 2008-12-30 | 2010-06-16 | 沈阳东北大学冶金技术研究所有限公司 | Alkaline flow guiding sand used in steel ladle |
| CN101348377B (en) * | 2008-08-21 | 2011-06-15 | 武汉科技大学 | Method for preparing fire-resistant material from synthetic MgO-SiC-C material |
| CN102114534A (en) * | 2011-03-15 | 2011-07-06 | 武汉科技大学 | Chromium-containing diversion sands for steel ladle and preparation method thereof |
| CN102674727A (en) * | 2012-05-04 | 2012-09-19 | 宜昌福泉镁橄榄石有限责任公司 | Dry forsterite sand for full-mold casting and preparation method for dry forsterite sand |
| CN104557090A (en) * | 2015-01-12 | 2015-04-29 | 河南通宇冶材集团有限公司 | Process for producing steel ladle drainage agent |
| CN112479727A (en) * | 2020-12-23 | 2021-03-12 | 河南通宇冶材集团有限公司 | Preparation method of non-reactive drainage agent |
| CN115650740A (en) * | 2022-09-14 | 2023-01-31 | 泰州市科博力新材料科技有限公司 | High-quality magnesia drainage sand for steel ladle and preparation method thereof |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1165798A (en) * | 1996-05-20 | 1997-11-26 | 李瑞华 | Diversion sands for ladle |
| CN1115313C (en) * | 1999-03-23 | 2003-07-23 | 四川省威远特种耐火材料实业公司 | Draining sand |
| CN1509827A (en) * | 2002-12-26 | 2004-07-07 | 首钢总公司 | Alkali inducing sand for ladle and production thereof |
| JP2005088022A (en) * | 2003-09-12 | 2005-04-07 | Yamakawa Sangyo Kk | Plugging-material for slidable opening/closing device of ladle |
-
2007
- 2007-09-03 CN CNB2007100531104A patent/CN100475387C/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101348377B (en) * | 2008-08-21 | 2011-06-15 | 武汉科技大学 | Method for preparing fire-resistant material from synthetic MgO-SiC-C material |
| CN101444842B (en) * | 2008-12-30 | 2010-06-16 | 沈阳东北大学冶金技术研究所有限公司 | Alkaline flow guiding sand used in steel ladle |
| CN102114534A (en) * | 2011-03-15 | 2011-07-06 | 武汉科技大学 | Chromium-containing diversion sands for steel ladle and preparation method thereof |
| CN102114534B (en) * | 2011-03-15 | 2013-03-06 | 武汉科技大学 | Chromium-containing diversion sands for steel ladle and preparation method thereof |
| CN102674727A (en) * | 2012-05-04 | 2012-09-19 | 宜昌福泉镁橄榄石有限责任公司 | Dry forsterite sand for full-mold casting and preparation method for dry forsterite sand |
| CN102674727B (en) * | 2012-05-04 | 2014-01-01 | 宜昌福泉镁橄榄石有限责任公司 | Dry forsterite sand for full-mold casting and preparation method for dry forsterite sand |
| CN104557090A (en) * | 2015-01-12 | 2015-04-29 | 河南通宇冶材集团有限公司 | Process for producing steel ladle drainage agent |
| CN112479727A (en) * | 2020-12-23 | 2021-03-12 | 河南通宇冶材集团有限公司 | Preparation method of non-reactive drainage agent |
| CN112479727B (en) * | 2020-12-23 | 2022-05-06 | 河南通宇冶材集团有限公司 | Preparation method of non-reactive drainage agent |
| CN115650740A (en) * | 2022-09-14 | 2023-01-31 | 泰州市科博力新材料科技有限公司 | High-quality magnesia drainage sand for steel ladle and preparation method thereof |
| CN115650740B (en) * | 2022-09-14 | 2023-10-27 | 泰州市科博力新材料科技有限公司 | Magnesia drainage sand for high-quality steel ladle and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN100475387C (en) | 2009-04-08 |
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Granted publication date: 20090408 |