CN112341049A - Lightweight slag stopper and preparation method thereof - Google Patents
Lightweight slag stopper and preparation method thereof Download PDFInfo
- Publication number
- CN112341049A CN112341049A CN202011176622.1A CN202011176622A CN112341049A CN 112341049 A CN112341049 A CN 112341049A CN 202011176622 A CN202011176622 A CN 202011176622A CN 112341049 A CN112341049 A CN 112341049A
- Authority
- CN
- China
- Prior art keywords
- cement
- perlite
- slag stopper
- weight
- raw materials
- 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.)
- Pending
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28B—SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS; SHAPING SLAG; SHAPING MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28B3/00—Producing shaped articles from the material by using presses; Presses specially adapted therefor
- B28B3/20—Producing shaped articles from the material by using presses; Presses specially adapted therefor wherein the material is extruded
- B28B3/26—Extrusion dies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/003—Methods for mixing
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/14—Minerals of vulcanic origin
- C04B14/18—Perlite
-
- 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
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/28—Manufacture of steel in the converter
- C21C5/42—Constructional features of converters
- C21C5/46—Details or accessories
- C21C5/4653—Tapholes; Opening or plugging thereof
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/0087—Uses not provided for elsewhere in C04B2111/00 for metallurgical applications
- C04B2111/00887—Ferrous metallurgy
Abstract
The invention belongs to the technical field of converter tapping slag stopping devices, and particularly relates to a light slag stopping plug which comprises the following raw materials in percentage by weight: 26-40 parts of perlite, 40-52 parts of cement and the balance of water, wherein the weight ratio of the perlite to the cement is 1 (1-2); the specific preparation method of the light slag stopper comprises the following steps: 1. respectively weighing the raw materials according to the weight percentage, adding the perlite and the cement into a stirrer, stirring for 15-20min, uniformly mixing the perlite and the cement, adding water into the stirrer, continuously stirring for 10-20min, kneading the perlite and the cement into a mixed material, and taking out for later use; 2. and (2) adding the mixed material prepared in the step (1) into a die of a forming press, extruding by pressure until the mixed material is formed, and taking out to obtain the light slag stopper. The defects in the prior art are overcome, the perlite and the cement are used as the raw materials of the slag stopper, the weight of the slag stopper is reduced, the operation of workers is facilitated, the using amount of the cement is reduced, and the manufacturing cost is reduced.
Description
Technical Field
The invention belongs to the technical field of converter tapping slag stopping devices, and particularly relates to a light slag stopping plug and a preparation method thereof.
Background
In the converter tapping process, steel slag enters a steel ladle along with molten steel, and the steel slag entering the steel ladle seriously influences the steel quality. Therefore, the slag blocking during the tapping process of the converter has the following functions: (1) effectively preventing molten steel from rephosphorization and resulfurization, blocking slag during converter tapping, being an important measure for improving the quality of the molten steel, not only reducing rephosphorization and resulfurization of the molten steel, improving the yield of alloy, reducing inclusion in the molten steel and improving the cleanliness of the molten steel, but also creating conditions for subsequent refining because 10-13% of SO is contained in the steel slag during slagging and dephosphorization in the refining process2And 0.8-1.0% of P2O3The molten steel is easy to generate the phenomena of rephosphorization and resulfurization, and the inclusion of the molten steel exceeds the standard to form scrap steel; (2) the consumption of the deoxidizer and the alloy is reduced, and effective slag blocking measures are taken during the tapping of the converter, so that the consumption of the deoxidizer and the alloy can be reduced, the slag adhesion of a steel ladle is reduced, the service life of a steel ladle is prolonged, the service life of refractory materials in the tapping hole area of the converter can be prolonged, and the production cost of steel-making products is reduced.
Most of the existing slag-stopping plugs are made of solid materials which are poured, a large amount of cement materials are wasted, and the solid slag-stopping plugs are heavy, so that the use burden of workers and people is increased.
Disclosure of Invention
The invention aims to provide a light slag stopper and a preparation method thereof, which overcome the defects of the prior art, reduce the weight of the slag stopper by adopting perlite and cement as raw materials of the slag stopper, facilitate the operation of workers, reduce the consumption of the cement and reduce the manufacturing cost.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
a lightweight slag stopper comprises the following raw materials in percentage by weight: 26-40 parts of perlite, 40-52 parts of cement and the balance of water, wherein the weight ratio of the perlite to the cement is 1 (1-2).
Further comprises the following raw materials in percentage by weight: 40% of perlite, 40% of cement and 20% of water.
Further comprises the following raw materials in percentage by weight: 35% of perlite, 48% of cement and 17% of water.
Further comprises the following raw materials in percentage by weight: 26% of perlite, 52% of cement and 22% of water.
A preparation method based on the light slag stopper specifically comprises the following steps:
(1) respectively weighing the raw materials according to the weight percentage, adding the perlite and the cement into a stirrer, stirring for 15-20min, uniformly mixing the perlite and the cement, adding water into the stirrer, continuously stirring for 10-20min, kneading the perlite and the cement into a mixed material, and taking out for later use;
(2) and (2) adding the mixed material prepared in the step (1) into a die of a forming press, extruding by pressure until the mixed material is formed, and taking out to obtain the light slag stopper.
Compared with the prior art, the invention has the following beneficial effects:
according to the lightweight slag stopper and the preparation method thereof, perlite and cement are used as raw materials of the slag stopper, so that the weight of the slag stopper is reduced, and the operation of workers is facilitated; the slag stopper is molded by a pressure molding mode, so that the equipment cost is lower, and the operation is more convenient; because the refractoriness of the perlite is only about 1 kilo DEG, and the temperature of the molten steel is about 1600 DEG, the slag stopper cracks and falls off under the pressure of the molten steel by the stress generated by thermal expansion after being softened under the temperature, thereby realizing the automatic falling-off function of the slag stopper.
Detailed Description
The technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
The invention discloses a preparation method of a light slag stopper, which specifically comprises the following steps:
(1) weighing 1kg of perlite, 1kg of cement and 0.5kg of clear water, adding the perlite and the cement into a stirrer, stirring for 15-20min, uniformly mixing the perlite and the cement, adding the clear water into the stirrer, continuously stirring for 10-20min, kneading the perlite and the cement into a mixed material, and taking out the mixed material for later use;
(2) and (2) adding the mixed material prepared in the step (1) into a die of a forming press, extruding by pressure until the mixed material is formed, and taking out to obtain the light slag stopper.
Example 2
The invention discloses a preparation method of a light slag stopper, which specifically comprises the following steps:
(1) weighing 1kg of perlite, 1.5kg of cement and 0.6kg of clear water, adding the perlite and the cement into a stirrer, stirring for 15-20min, uniformly mixing the perlite and the cement, adding the clear water into the stirrer, continuously stirring for 10-20min, kneading the perlite and the cement into a mixed material, and taking out the mixed material for later use;
(2) and (2) adding the mixed material prepared in the step (1) into a die of a forming press, extruding by pressure until the mixed material is formed, and taking out to obtain the light slag stopper.
Example 3
The invention discloses a preparation method of a light slag stopper, which specifically comprises the following steps:
(1) weighing 1kg of perlite, 2kg of cement and 0.85kg of clear water, adding the perlite and the cement into a stirrer, stirring for 15-20min, uniformly mixing the perlite and the cement, adding the clear water into the stirrer, continuously stirring for 10-20min, kneading the perlite and the cement into a mixed material, and taking out the mixed material for later use;
(2) and (2) adding the mixed material prepared in the step (1) into a die of a forming press, extruding by pressure until the mixed material is formed, and taking out to obtain the light slag stopper.
According to the light slag stopper provided by the invention, perlite and cement are used as raw materials of the slag stopper, so that the weight of the slag stopper is reduced, and the operation of workers is facilitated; the slag stopper is molded by a pressure molding mode, so that the equipment cost is lower, and the operation is more convenient; because the refractoriness of the perlite is only about 1 kilo DEG, and the temperature of the molten steel is about 1600 DEG, the slag stopper cracks and falls off under the pressure of the molten steel by the stress generated by thermal expansion after being softened under the temperature, thereby realizing the automatic falling-off function of the slag stopper.
Before the converter steelmaking, a light slag stopper is plugged in a steel tapping hole of the converter by using a tool, and the light slag stopper is cracked and falls off after blocking front slag due to the action of the temperature and the pressure of the converter just before the tapping, so that the slag is convenient to discharge.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.
Claims (5)
1. A lightweight slag stopper is characterized in that: comprises the following raw materials in percentage by weight: 26-40 parts of perlite, 40-52 parts of cement and the balance of water, wherein the weight ratio of the perlite to the cement is 1 (1-2).
2. A lightweight slag stopper according to claim 1, further comprising: comprises the following raw materials in percentage by weight: 40% of perlite, 40% of cement and 20% of water.
3. A lightweight slag stopper according to claim 1, further comprising: comprises the following raw materials in percentage by weight: 32% of perlite, 48% of cement and 20% of water.
4. A lightweight slag stopper according to claim 1, further comprising: comprises the following raw materials in percentage by weight: 26% of perlite, 52% of cement and 22% of water.
5. A method of manufacturing a lightweight slag stopper according to any one of claims 1 to 4, characterized in that: the method specifically comprises the following steps:
(1) respectively weighing the raw materials according to the weight percentage, adding the perlite and the cement into a stirrer, stirring for 15-20min, uniformly mixing the perlite and the cement, adding water into the stirrer, continuously stirring for 10-20min, kneading the perlite and the cement into a mixed material, and taking out for later use;
(2) and (2) adding the mixed material prepared in the step (1) into a die of a forming press, extruding by pressure until the mixed material is formed, and taking out to obtain the light slag stopper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011176622.1A CN112341049A (en) | 2020-10-29 | 2020-10-29 | Lightweight slag stopper and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011176622.1A CN112341049A (en) | 2020-10-29 | 2020-10-29 | Lightweight slag stopper and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112341049A true CN112341049A (en) | 2021-02-09 |
Family
ID=74355497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011176622.1A Pending CN112341049A (en) | 2020-10-29 | 2020-10-29 | Lightweight slag stopper and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112341049A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1900705A1 (en) * | 2006-09-14 | 2008-03-19 | Bj Services Company | Low density cements for use in cementing operations |
| CN102517422A (en) * | 2011-12-30 | 2012-06-27 | 浙江铭德新材科技有限公司 | Slag melting agent of refining furnace of molten steel and production method thereof |
| CN105642876A (en) * | 2016-01-22 | 2016-06-08 | 中钢集团邢台机械轧辊有限公司 | Nodulizing molten iron insulating method |
| CN105950821A (en) * | 2016-03-07 | 2016-09-21 | 安徽云天冶金科技股份有限公司 | High-strength slag-stopping ball used for converter steelmaking and preparation method thereof |
| WO2016182462A1 (en) * | 2015-05-08 | 2016-11-17 | Jerzy Haintze | A method of manufacturing building elements and a system for manufacturing building elements |
| CN108546888A (en) * | 2018-05-11 | 2018-09-18 | 铜陵市大明玛钢有限责任公司 | A kind of ball grinding machine lining board production technology |
-
2020
- 2020-10-29 CN CN202011176622.1A patent/CN112341049A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1900705A1 (en) * | 2006-09-14 | 2008-03-19 | Bj Services Company | Low density cements for use in cementing operations |
| CN102517422A (en) * | 2011-12-30 | 2012-06-27 | 浙江铭德新材科技有限公司 | Slag melting agent of refining furnace of molten steel and production method thereof |
| WO2016182462A1 (en) * | 2015-05-08 | 2016-11-17 | Jerzy Haintze | A method of manufacturing building elements and a system for manufacturing building elements |
| CN105642876A (en) * | 2016-01-22 | 2016-06-08 | 中钢集团邢台机械轧辊有限公司 | Nodulizing molten iron insulating method |
| CN105950821A (en) * | 2016-03-07 | 2016-09-21 | 安徽云天冶金科技股份有限公司 | High-strength slag-stopping ball used for converter steelmaking and preparation method thereof |
| CN108546888A (en) * | 2018-05-11 | 2018-09-18 | 铜陵市大明玛钢有限责任公司 | A kind of ball grinding machine lining board production technology |
Non-Patent Citations (4)
| Title |
|---|
| 徐平坤: "我国钢包用耐火材料的发展及技术进步", 《工业炉》 * |
| 王岩春: "硅钢保护渣优化设计及应用", 《炼钢》 * |
| 肖利等: "转炉用挡渣塞", 《耐火材料》 * |
| 许晓海等: "《耐火材料技术手册》", 31 January 2000, 冶金工业出版社 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
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Application publication date: 20210209 |