CN105565826A - Steel ladle fireproof casting material - Google Patents
Steel ladle fireproof casting material Download PDFInfo
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- CN105565826A CN105565826A CN201410523649.1A CN201410523649A CN105565826A CN 105565826 A CN105565826 A CN 105565826A CN 201410523649 A CN201410523649 A CN 201410523649A CN 105565826 A CN105565826 A CN 105565826A
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Abstract
The invention relates to a steel ladle fireproof casting material, which is prepared from the following components by weight: 50-70 parts of magnesite, 5-20 parts of dolomite, 5-10 parts of zircon, 1-20 parts of carbon, 2-5 parts of an anhydrous binder, and 1-8 parts of hercynite, wherein the magnesite, the dolomite, the zircon and the hercynite are mixed to prepare 40-50 parts by weight of particles and 50-60 parts by weight of fine powder, the particle size of the particles is 2.0-2.5 mm, and the particle size of the fine powder is 0.1-0.9 mm.
Description
Technical field
The invention belongs to technical field of refractory materials, particularly relate to a kind of ladle refractory castable.
Background technology
Compared with qualitative refractory product, with refractory castable be that the unshape refractory of representative has that technical process is short, production energy consumption and cost is low, easy to use, applied widely, globality and the advantage such as result of use is good, thus worldwide obtain and develop rapidly, its proportion shared in whole refractory materials is more and more higher.In the country of some refractory technologies advanced person, the output of unshape refractory is close to the output even having exceeded setting goods.Such as, the ratio that current Japanese unshape refractory output accounts for whole refractory materials reaches about 60%; The U.S. be about 50%; English, moral, Fa Deng state are 40% ~ 50%.Nowadays, refractory castable has been widely used in the high temperature service of the industrial circles such as metallurgy, building materials, electric power, chemical industry, such as, in quality coal in cement kiln systems, has now widely applied the refractory castable of various material.
Unshape refractory by the granular of rational gradation composition and powder-material and bonding agent jointly form without being shaped and burn till direct for refractory materials.The essentially consist of unshape refractory is granular and refractory material that is powdery, according to its service requirements, can being made up of various material, in order to make these refractory materials be combined into entirety, generally all adding the bonding agent of suitable kind and quantity.The kind of unshape refractory is a lot, can classify according to the material of refractory material used, as siliceous, clayey, High-Alumina, magnesia, rhombspar matter, chromium matter, containing zirconium matter etc.General unshape refractory has the features such as preparation process is easy, yield rate is high, heat energy consumption is lower.Meanwhile, there is conformability strong during use, can be made into firm Integral construction thing.
Such as, the tundish used in ferrous metallurgy production unit, adopts the refractory material containers that refractory materials is built into exactly.As everyone knows, calcium-magnesium-containing fire resistant materials has the advantage such as environmental protection and energy purifying of steel because of it, is widely used gradually in steel-making industry, but, the problem of the easy aquation of calcium oxide is never solved preferably, constrains the depth & wideth of its application.
Lime refractory---the time that aquation does not occur without the calcium magnesia natural storage of water repellent treatment is generally no more than 100 days in current conventional containing; And no matter utilize the calcium magnesia through water repellent treatment or the calcium magnesia without water repellent treatment to prepare calcium magnesia brick, not only need to adopt anhydrous or liquid bonding agent that water content is the least possible, and the calcium magnesia brick produced have to pass through immersion oil or soak cured surface treatment after adopt vacuum packaging could preserve 180 days not aquations again; Both add product cost, and bring very large trouble to again product stock, transport and use.Even production definition goods are difficulty so, the difficulty of production indefinite form goods (mould material) has just been well imagined; Therefore, a great problem that the hydration resistance of high contents of calcium and magnesium refractory materials, oxidation-resistance and heat-shock resistance are puzzlement refractory materials manufacturers always how is carried.
Summary of the invention
For the deficiency that the above prior art exists, the invention provides the ladle refractory castable that a kind of hydration resistance, oxidation-resistance and heat-shock resistance are excellent.
A kind of ladle refractory castable, makes by comprising following parts by weight component: 50 ~ 70 parts, magnesia, rhombspar 5 ~ 20 parts, zircon 5 ~ 10 parts, carbon element 1 ~ 20 part, anhydrous binder 2 ~ 5 parts, hercynite 1 ~ 8 part; Make particle and fine powder after the mixing of magnesia, rhombspar, zircon, hercynite, wherein, the parts by weight of particle and fine powder are: particle 40 ~ 50 parts, fine powder 50 ~ 60 parts, and particle size range is 2.0 ~ 2.5mm, and fine powder particle diameter is 0.1 ~ 0.9mm.
In above-mentioned ladle refractory castable, carbon element has very high fusing point, carbon structure is all not easy to be infiltrated by molten metal, slag, molten metal under high temperature can be stoped, slag permeates to interiors of products of the present invention, the low-thermal-expansion rate of carbon element makes product of the present invention volume stability in applied at elevated temperature good, built-in thermal stress is low, and heat-shock resistance is strong; The mixing of magnesia, rhombspar, zircon at high temperature, obtain magnesium oxide, calcium oxide, zirconium white, silicon-dioxide, magnesium oxide, calcium oxide, zirconium white, silicon-dioxide are high temperature material, and magnesium oxide and zirconium white can form sosoloid, even if thus there is minute crack, organize and still can indurate, thus excellent corrosion resistance; Silicon-dioxide and magnesium oxide react and form forsterite, the fusing point of this resultant is about 1896 DEG C, significantly lower than magnesium oxide, therefore contributes to improving resistance to spallation, simultaneously due to the existence of hercynite, the heat-shock resistance of product of the present invention, Resisting fractre spalling can be improved.
Embodiment
The technical solution adopted in the present invention is after a certain proportion of magnesia, rhombspar, zircon, carbon element being mixed in a predetermined order, more finally obtains ladle refractory castable after adding anhydrous binder, urotropine mixing.Concretely:
A kind of ladle refractory castable, makes by comprising following parts by weight component: 50 ~ 70 parts, magnesia, rhombspar 5 ~ 20 parts, zircon 5 ~ 10 parts, carbon element 1 ~ 20 part, anhydrous binder 2 ~ 5 parts, hercynite 1 ~ 8 part; Make particle and fine powder after the mixing of magnesia, rhombspar, zircon, hercynite, wherein, the parts by weight of particle and fine powder are: particle 40 ~ 50 parts, fine powder 50 ~ 60 parts, and particle size range is 2.0 ~ 2.5mm, and fine powder particle diameter is 0.1 ~ 0.9mm.Wherein, anhydrous binder is novolac resin liquid.
Below illustrate above-mentioned ladle refractory castable:
Embodiment 1
(1) parts by weight for the preparation of ladle refractory castable raw material are: 50 parts, magnesia, rhombspar 20 parts, zircon 5 parts, carbon element 15 parts, anhydrous binder 4 parts, hercynite 6 parts; Make particle and fine powder after the mixing of magnesia, rhombspar, zircon, wherein, the parts by weight of particle and fine powder are: particle 40 parts, fine powder 60 parts, and particle size range is 2.5, and fine powder particle diameter is 0.9mm.
(2) magnesia, rhombspar, zircon, hercynite obtain compound after carrying out premix, according to the parts by weight of above-mentioned particle and fine powder, compound is pulverized, then add carbon element to mix, finally add anhydrous binder mixing again and both obtained ladle refractory castable.
Embodiment 2
(1) parts by weight for the preparation of ladle refractory castable raw material are: 70 parts, magnesia, rhombspar 5 parts, zircon 10 parts, carbon element 5 parts, anhydrous binder 2 parts, hercynite 8 parts; Make particle and fine powder after the mixing of magnesia, rhombspar, zircon, wherein, the parts by weight of particle and fine powder are: particle 50 parts, fine powder 50 parts, and particle size range is 2.0mm, and fine powder particle diameter is 0.1mm.
(2) magnesia, rhombspar, zircon, hercynite obtain compound after carrying out premix, according to the parts by weight of above-mentioned particle and fine powder, compound is pulverized, then add carbon element to mix, finally add anhydrous binder mixing again and both obtained ladle refractory castable.
As described above, be only preferred embodiment of the present invention, when not limiting scope of the invention process with this, the simple equivalence namely generally done according to the present patent application the scope of the claims and invention description content changes and modifies, and all still remains within the scope of the patent.
Claims (4)
1. a ladle refractory castable, is characterized in that: make by comprising following parts by weight component: 50 ~ 70 parts, magnesia, rhombspar 5 ~ 20 parts, zircon 5 ~ 10 parts, carbon element 1 ~ 20 part, anhydrous binder 2 ~ 5 parts, hercynite 1 ~ 8 part; Make particle and fine powder after the mixing of magnesia, rhombspar, zircon, hercynite, wherein, the parts by weight of particle and fine powder are: particle 40 ~ 50 parts, fine powder 50 ~ 60 parts, and particle size range is 2.0 ~ 2.5mm, and fine powder particle diameter is 0.1 ~ 0.9mm.
2. ladle refractory castable according to claim 1, is characterized in that: anhydrous binder is novolac resin liquid.
3. ladle refractory castable according to claim 2, is characterized in that: the parts by weight for the preparation of ladle refractory castable raw material are: 50 parts, magnesia, rhombspar 20 parts, zircon 5 parts, carbon element 15 parts, anhydrous binder 4 parts, hercynite 6 parts; Make particle and fine powder after the mixing of magnesia, rhombspar, zircon, wherein, the parts by weight of particle and fine powder are: particle 40 parts, fine powder 60 parts, and particle size range is 2.5, and fine powder particle diameter is 0.9mm.
4. ladle refractory castable according to claim 2, is characterized in that: the parts by weight for the preparation of ladle refractory castable raw material are: 70 parts, magnesia, rhombspar 5 parts, zircon 10 parts, carbon element 5 parts, anhydrous binder 2 parts, hercynite 8 parts; Make particle and fine powder after the mixing of magnesia, rhombspar, zircon, wherein, the parts by weight of particle and fine powder are: particle 50 parts, fine powder 50 parts, and particle size range is 2.0mm, and fine powder particle diameter is 0.1mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410523649.1A CN105565826A (en) | 2014-10-08 | 2014-10-08 | Steel ladle fireproof casting material |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410523649.1A CN105565826A (en) | 2014-10-08 | 2014-10-08 | Steel ladle fireproof casting material |
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| CN105565826A true CN105565826A (en) | 2016-05-11 |
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| CN201410523649.1A Pending CN105565826A (en) | 2014-10-08 | 2014-10-08 | Steel ladle fireproof casting material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110114324A (en) * | 2017-01-27 | 2019-08-09 | 里弗雷克特里知识产权两合公司 | Manufacture the batch of unsetting refractory ceramic product, the method for the unsetting refractory ceramic product of manufacture and the unsetting refractory ceramic product thus manufactured |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102910917A (en) * | 2012-10-20 | 2013-02-06 | 江苏苏嘉集团新材料有限公司 | Magnesium-calcium-carbon refractory material |
| CN103553678A (en) * | 2013-10-31 | 2014-02-05 | 宁夏天纵泓光余热发电技术有限公司 | Refractory castable for tundish cover |
-
2014
- 2014-10-08 CN CN201410523649.1A patent/CN105565826A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102910917A (en) * | 2012-10-20 | 2013-02-06 | 江苏苏嘉集团新材料有限公司 | Magnesium-calcium-carbon refractory material |
| CN103553678A (en) * | 2013-10-31 | 2014-02-05 | 宁夏天纵泓光余热发电技术有限公司 | Refractory castable for tundish cover |
Non-Patent Citations (1)
| Title |
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| 张君博等: "氧化镁铁铝尖晶石耐火材料的制备", 《硅酸盐通报》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110114324A (en) * | 2017-01-27 | 2019-08-09 | 里弗雷克特里知识产权两合公司 | Manufacture the batch of unsetting refractory ceramic product, the method for the unsetting refractory ceramic product of manufacture and the unsetting refractory ceramic product thus manufactured |
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Application publication date: 20160511 |
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