CN105439578A - Ramming mass for iron-making system - Google Patents
Ramming mass for iron-making system Download PDFInfo
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- CN105439578A CN105439578A CN201510836915.0A CN201510836915A CN105439578A CN 105439578 A CN105439578 A CN 105439578A CN 201510836915 A CN201510836915 A CN 201510836915A CN 105439578 A CN105439578 A CN 105439578A
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Abstract
The invention provides a ramming mass for an iron-making system. The ramming mass is prepared by uniformly mixing components in parts by weight as follows: 20-30 parts of a skeleton material I, 30-40 parts of a skeleton material II, 5-15 parts of silicon carbide, 5-10 parts of modified alumina powder, 5-8 parts of silicon carbide dedusting powder, 2-4 parts of a carbon source, 1-3 parts of an antioxidant,3-5 parts of Jiaozuo mud, 0-2 parts of a plasticizer, 3-5 parts of kyanite and 5-7 parts of modified resin. The ramming mass realizes recycling of the raw materials (reworked materials), and the problems of poor plasticity and viscosity of the Jiaozuo mud are solved by the aid of the special plasticizer. The service life of the ramming mass is not shorter than that of any conventional high-grade ramming mass on the premise that the cost is reduced obviously.
Description
Technical field
The present invention relates to a kind of ramming mass for ironmaking system, be particularly useful for the main casting house in stokehold of iron-smelting blast furnace, casting runner (Zhigou) and slag runner.
Background technology
Under the prerequisite of reliable running, blast furnace ironmaking needs twenty four hours to be in runs state continuously, and ramming mass is a kind of Rapid-Repair adopted when carrying out regular Fast-Maintenance or upkeep operation to iron runner, the material of exempting from baking.
The starting material of existing iron runner ramming mass mainly comprise the components such as corundum, alumina, silicon carbide, alumina powder and silicon ash, and have higher requirement to the purity of often kind of component, in addition, the production of these starting material itself all belongs to the technique of high energy consumption, high pollution, and compare to normal castable in main trough, only can reach the level about its half in work-ing life of current ramming mass, therefore, cost and the performance of ramming mass are all urgently improved.
Summary of the invention
In view of this, the invention provides a kind of ramming mass for ironmaking system, under being intended to the prerequisite in guarantee ramming mass work-ing life, reduce its cost.
The technical solution used in the present invention is specially:
For a ramming mass for ironmaking system, wherein each component of ramming mass material forms according to following weight proportion Homogeneous phase mixing:
Frame material one: 20-30 part;
Frame material two: 30-40 part;
Silicon carbide: 5-15 part;
Modified oxidized aluminium powder: 5-10 part;
Silicon carbide dust-removing powder: 5-8 part;
Carbon source: 2-4 part;
Oxidation inhibitor: 1-3 part;
Jiaozhuo mud: 3-5 part;
Softening agent: 0-2 part;
Kyanite: 3-5 part;
Modified resin: 5-7 part.
Above-mentioned in the ramming mass of ironmaking system, within the part by weight scope of 1:2:4, Homogeneous phase mixing is composite forms by rubber powder, starch and pulp powder three kinds of components for described softening agent, has stronger increase plasticity and the effect of cohesive force.
Above-mentioned in the ramming mass of ironmaking system, described frame material one is corundum or high grade bauxite, the particle diameter < 1mm of described frame material one.
Above-mentioned in the ramming mass of ironmaking system, described frame material two is the particle diameter >=1mm of corundum reworked material or alumina reworked material, described frame material two.
For a ramming mass for ironmaking system, wherein each component of ramming mass material forms according to following weight proportion Homogeneous phase mixing:
Frame material one: 25 part;
Frame material two: 35 parts;
Silicon carbide: 6 parts;
Modified oxidized aluminium powder: 9 parts;
Silicon carbide dust-removing powder: 7 parts;
Carbon source: 4 parts;
Oxidation inhibitor: 2 parts;
Jiaozhuo mud: 4 parts;
Softening agent: 1 part;
Kyanite: 3 parts;
Modified resin: 5 parts.
Above-mentioned in the ramming mass of ironmaking system, each component of described softening agent forms according to following weight proportion Homogeneous phase mixing:
Rubber powder: 0.14 part;
Starch: 0.28 part;
Pulp powder: 0.58 part.
The beneficial effect that the present invention produces is:
For ramming mass, material thixotropy (mobility) be there is no to the feature specially required, the present invention proposes a kind of adopt purity higher reworked material and the ramming mass of alternative materials laminating production, achieve raw-material recycle (reworked material), the waste materials such as dust-removing powder are turned waste into wealth, the feature that also make use of modified oxidized aluminium powder dexterously (has the aggreggate utility of alumina, lapis amiridis and aluminum oxide, but the dispersion effect of dispersion agent can be affected), solve the plasticity of Jiaozhuo mud and the problem of viscosity difference by distinctive softening agent;
By utilizing composite between twice-laid stuff and special additive of reclaiming at a low price, reduce the cost of material, improve the work-ing life of its ramming mass simultaneously, under the prerequisite that the cost performance of ramming mass is promoted, improve the industrial competition of product, the recycling of salvage material also achieves the clean cycle utilization of the energy to a certain extent simultaneously;
Ramming mass of the present invention can be applicable to variously in ironmaking system hold the trough with output type, main casting house, casting runner (Zhigou) and slag runner before being particularly useful for State of Blast Furnace.
Embodiment
Below in conjunction with embodiment, technical scheme of the present invention is described in further detail.
For a ramming mass for ironmaking system, wherein each component of ramming mass material forms according to following weight proportion Homogeneous phase mixing:
Frame material one: 20-30 part;
Frame material two: 30-40 part;
Silicon carbide: 5-15 part;
Modified oxidized aluminium powder: 5-10 part;
Silicon carbide dust-removing powder: 5-8 part;
Carbon source: 2-4 part;
Oxidation inhibitor: 1-3 part; Described oxidation inhibitor is silicon iron class alloy;
Jiaozhuo mud: 3-5 part;
Softening agent: 0-2 part;
Kyanite: 3-5 part;
Modified resin: 5-7 part.
Wherein within the part by weight scope of 1:2:4, Homogeneous phase mixing is composite forms by rubber powder, starch and pulp powder three kinds of components for softening agent, has stronger increase plasticity and the effect of cohesive force.
Frame material one is corundum or the high grade bauxite of particle diameter < 1mm, and frame material two is corundum reworked material or the alumina reworked material of particle diameter >=1mm.
As a kind of specific embodiment, each component of ramming mass material forms according to following weight proportion Homogeneous phase mixing:
Corundum or high grade bauxite: 25 parts;
Corundum or alumina reworked material: 35 parts;
Silicon carbide: 6 parts;
Modified oxidized aluminium powder: 9 parts;
Silicon carbide dust-removing powder: 7 parts;
Carbon source: 4 parts;
Oxidation inhibitor: 2 parts;
Jiaozhuo mud: 4 parts;
Softening agent: 1 part;
Kyanite: 3 parts;
Modified resin: 5 parts.
In above-mentioned 1 part of softening agent, rubber powder: 0.14 part, starch: 0.28 part, pulp powder: 0.58 part.
Wherein:
Alumina and corundum (reworked material) for contribution mainly skeleton and the support of ramming mass, wherein:
As primary material, corundum (Al
2o
3>=95%) or high grade bauxite (Al
2o
3>=85%) mainly add with the form of the fine particle of particle diameter < 1mm or fine powder; As reworked material, alumina reworked material (Al
2o
3>=92wt%) or corundum reworked material (Al
2o
3>=83wt%) although through comparatively strict process, still there is a certain amount of impurity, and particle is thinner, impurity is more, therefore the regenerated particles used in ramming mass of the present invention mainly adds with the form of the big-and-middle-sized particle of particle diameter>=1mm;
Carbon source can be electrode powder or other carbon containing class materials, can be that one or more carbon class materials mix, as long as ensure its fixed carbon content >=45wt%;
Modified resin and modified oxidized aluminium powder are commercially available prod, the water content < 0.5wt% wherein in modified resin, the Al in modified oxidized aluminium powder
2o
3>=88wt%, normally mixed in suitable ratio by several dedusting material, size-grade distribution is wider, and content is higher, price is only about 1/3rd of alumina powder, except having the aggreggate utility of Substitute For Partial alumina, lapis amiridis and aluminum oxide, also there is the effect of certain acceleration of sintering;
Oxidation inhibitor is silicon iron class alloy, and silicon carbide dust-removing powder (carborundum content >=92wt%) is a kind of recovery waste material of Industrial products, cheap, but it has better anti-slag and oxidation proof properties.Its acquisition according to the content reclaiming silicon carbide in waste material or carbide dust-removing powder, can detect through admission and ensures that carborundum content is up to standard;
Softening agent forms by the material of the compositions such as rich cellulose, starch based and protein is composite, adopt in the present invention that rubber powder, starch and pulp powder are composite in proportion to be formed, there is the effect of obvious plasticising and raising cohesive force, the effect that therefore it can make abundance, cheap Jiaozhuo mud (in soft clay class, price is minimum) has analogy high-grade Guangxi white clay.
Below technical scheme of the present invention is explained in conjunction with the embodiments.Obviously; the foregoing is only the present invention's preferably embodiment; but protection scope of the present invention is not limited thereto; any be to one skilled in the art can expect easily, do not depart from change of the present invention or replacement in fact, be also all included within protection scope of the present invention.
Claims (6)
1. for a ramming mass for ironmaking system, it is characterized in that, each component of ramming mass material forms according to following weight proportion Homogeneous phase mixing:
Frame material one: 20-30 part;
Frame material two: 30-40 part;
Silicon carbide: 5-15 part;
Modified oxidized aluminium powder: 5-10 part;
Silicon carbide dust-removing powder: 5-8 part;
Carbon source: 2-4 part;
Oxidation inhibitor: 1-3 part;
Jiaozhuo mud: 3-5 part;
Softening agent: 0-2 part;
Kyanite: 3-5 part;
Modified resin: 5-7 part.
2. the ramming mass for ironmaking system according to claim 1, is characterized in that, within the part by weight scope of 1:2:4, Homogeneous phase mixing is composite forms by rubber powder, starch and pulp powder three kinds of components for described softening agent.
3. the ramming mass for ironmaking system according to claim 1, is characterized in that, described frame material one is corundum or high grade bauxite, the particle diameter < 1mm of described frame material one.
4. the ramming mass for ironmaking system according to claim 1, is characterized in that, described frame material two is the particle diameter >=1mm of corundum reworked material or alumina reworked material, described frame material two.
5. the ramming mass for ironmaking system according to claim 1, is characterized in that, each component of ramming mass material forms according to following weight proportion Homogeneous phase mixing:
Frame material one: 25 part;
Frame material two: 35 parts;
Silicon carbide: 6 parts;
Modified oxidized aluminium powder: 9 parts;
Silicon carbide dust-removing powder: 7 parts;
Carbon source: 4 parts;
Oxidation inhibitor: 2 parts;
Jiaozhuo mud: 4 parts;
Softening agent: 1 part;
Kyanite: 3 parts;
Modified resin: 5 parts.
6. the ramming mass for ironmaking system according to claim 5, is characterized in that, each component of described softening agent forms according to following weight proportion Homogeneous phase mixing:
Rubber powder: 0.14 part;
Starch: 0.28 part;
Pulp powder: 0.58 part.
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| CN201510836915.0A CN105439578B (en) | 2015-11-25 | 2015-11-25 | A kind of ramming mass for ironmaking system |
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|---|---|---|---|
| CN201510836915.0A CN105439578B (en) | 2015-11-25 | 2015-11-25 | A kind of ramming mass for ironmaking system |
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| CN105439578B CN105439578B (en) | 2018-03-09 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106116615A (en) * | 2016-06-29 | 2016-11-16 | 浙江康星新材料科技股份有限公司 | A kind of method that sound-insulating and heat-insulating refractory brick prepared by full reclaimed materials |
| CN106116477A (en) * | 2016-06-29 | 2016-11-16 | 浙江康星新材料科技股份有限公司 | A kind of preparation method of incinerator refractory brick |
| CN112661523A (en) * | 2021-01-23 | 2021-04-16 | 江苏锦耐新材料科技有限公司 | Ramming material for steel ladle and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56140079A (en) * | 1980-03-28 | 1981-11-02 | Nippon Steel Corp | Indefinite form refractory composition for vibration molding |
| CN101182220A (en) * | 2006-11-14 | 2008-05-21 | 海城华宇耐火材料有限公司 | Smelting-furnace bottom tamping material and manufacturing method |
-
2015
- 2015-11-25 CN CN201510836915.0A patent/CN105439578B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56140079A (en) * | 1980-03-28 | 1981-11-02 | Nippon Steel Corp | Indefinite form refractory composition for vibration molding |
| CN101182220A (en) * | 2006-11-14 | 2008-05-21 | 海城华宇耐火材料有限公司 | Smelting-furnace bottom tamping material and manufacturing method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106116615A (en) * | 2016-06-29 | 2016-11-16 | 浙江康星新材料科技股份有限公司 | A kind of method that sound-insulating and heat-insulating refractory brick prepared by full reclaimed materials |
| CN106116477A (en) * | 2016-06-29 | 2016-11-16 | 浙江康星新材料科技股份有限公司 | A kind of preparation method of incinerator refractory brick |
| CN106116477B (en) * | 2016-06-29 | 2018-10-26 | 浙江康星新材料科技股份有限公司 | A kind of preparation method of incinerator refractory brick |
| CN106116615B (en) * | 2016-06-29 | 2018-10-26 | 浙江康星新材料科技股份有限公司 | A kind of method that full reclaimed materials prepares sound-insulating and heat-insulating refractory brick |
| CN112661523A (en) * | 2021-01-23 | 2021-04-16 | 江苏锦耐新材料科技有限公司 | Ramming material for steel ladle and preparation method thereof |
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| CN105439578B (en) | 2018-03-09 |
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