CN112537963B - Spraying method for cleaning slag on edge of molten iron tank - Google Patents
Spraying method for cleaning slag on edge of molten iron tank Download PDFInfo
- Publication number
- CN112537963B CN112537963B CN201910890163.4A CN201910890163A CN112537963B CN 112537963 B CN112537963 B CN 112537963B CN 201910890163 A CN201910890163 A CN 201910890163A CN 112537963 B CN112537963 B CN 112537963B
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- CN
- China
- Prior art keywords
- spray coating
- edge
- hot
- parts
- refractory 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.)
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Classifications
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- 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
- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
- C04B35/66—Monolithic refractories or refractory mortars, including those whether or not containing clay
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D1/00—Processes for applying liquids or other fluent materials
- B05D1/02—Processes for applying liquids or other fluent materials performed by spraying
- B05D1/12—Applying particulate materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/14—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to metal, e.g. car bodies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- 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
- C04B2235/00—Aspects relating to ceramic starting mixtures or sintered ceramic products
- C04B2235/70—Aspects relating to sintered or melt-casted ceramic products
- C04B2235/96—Properties of ceramic products, e.g. mechanical properties such as strength, toughness, wear resistance
- C04B2235/9669—Resistance against chemicals, e.g. against molten glass or molten salts
- C04B2235/9676—Resistance against chemicals, e.g. against molten glass or molten salts against molten metals such as steel or aluminium
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Ceramic Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
- Ceramic Products (AREA)
Abstract
The invention discloses a spraying method for cleaning slag on the edge of a hot-metal ladle, which is characterized in that spraying materials are adopted to carry out spraying treatment on refractory materials on the edge of the hot-metal ladle, so that the refractory materials are effectively prevented from being damaged due to the cleaning of slag on the edge of the ladle; the spray coating comprises the following components in percentage by weight: grinding 85-90 parts of bauxite, 4-8 parts of aluminate cement, 1-3 parts of aluminum powder and 2-3 parts of silicon powder; the components are mixed to prepare the spray coating. The invention has the advantages that: 1. the spraying material has the advantages of easily obtained raw materials, simple use method and easy grasp by post personnel; 2. after the spray coating is adopted, the damage frequency of the upper part of the hot-metal ladle is obviously reduced, and the repair frequency is reduced from 30 times per month to about 5 times per month; 3. the service life of the hot metal ladle is effectively prolonged after the spray coating is adopted, and the average service life of each ladle is prolonged from 800 times to 850 times.
Description
Technical Field
The invention relates to the technical field of metallurgy, in particular to a spray coating of a hot metal ladle.
Background
The ladle edge of the hot metal ladle can be gradually bonded with slag in the ladle changing station and the pretreatment use process, slag bonding of the ladle edge can influence slag skimming and iron adding, and finally, the stability of the loading amount and the component control are influenced. Therefore, the slag on the edge of the hot-metal ladle needs to be cleaned regularly, but the slag on the edge of the ladle is cleaned, so that the refractory material is damaged, the hot-metal ladle is unusable, and the cost is increased.
Disclosure of Invention
According to the invention, the refractory material on the edge of the hot-metal ladle can is sprayed by adopting the spray paint, so that the damage of the refractory material caused by cleaning slag on the edge of the ladle can be effectively avoided. The specific technical scheme is as follows:
a spraying method for cleaning slag on the edge of a hot-metal ladle is characterized in that spraying materials are adopted to spray refractory materials on the edge of the hot-metal ladle, so that the refractory materials are effectively prevented from being damaged due to the cleaning of slag on the edge of the ladle; the spray coating comprises the following components in percentage by weight: grinding bauxite by 85-90, aluminate cement by 4-8, aluminum powder by 1-3 and silicon powder by 2-3; the components are mixed to prepare the spray coating.
And (3) putting the bagged spray paint into a powder spraying tank, and spraying the iron tank by using air pressure wind and medium pressure water.
The granularity requirement of the spray coating is as follows: the granularity requirement of the spray coating is as follows: more than 50% of the grains have a grain size of less than 200 meshes and the maximum grain size is 0.3 mm.
The invention has the advantages that:
1. the spraying material has the advantages of easily obtained raw materials, simple use method and easy grasp by post personnel;
2. after the spray coating is adopted, the damage frequency of the upper part of the hot-metal ladle is obviously reduced, and the repair frequency is reduced from 30 times per month to about 5 times per month;
3. after the spray coating is adopted, the service life of the hot-metal bottle is effectively prolonged, and the average service life of each bottle is prolonged from 800 times to 850 times.
Detailed Description
Example 1
Preparation of the spray coating: grinding 170kg of bauxite, 12kg of aluminate cement, 2kg of aluminum powder and 4kg of silicon powder; the components are mixed to prepare the spray coating. And (3) putting the bagged spray paint into a powder spraying tank, and spraying the refractory material on the edge of the hot-metal ladle tank by using air pressure and medium pressure water, wherein the spraying thickness is 2 mm.
Example 2
Preparing a spray coating: grinding bauxite 180kg, aluminate cement 8kg, aluminum powder 6 and silicon powder 4; the components are mixed to prepare the spray coating. And (3) putting the bagged spray paint into a powder spraying tank, and spraying the refractory material on the edge of the hot-metal ladle tank by using air pressure and medium pressure water, wherein the spraying thickness is 3 mm.
Example 3
Preparation of the spray coating: grinding 174kg of bauxite, 16kg of aluminate cement, 6kg of aluminum powder and 6kg of silicon powder; the components are mixed to prepare the spray coating. And (3) putting the bagged spray paint into a powder spraying tank, and spraying the refractory material on the edge of the hot-metal ladle tank by using air pressure and medium pressure water, wherein the spraying thickness is 2 mm.
Through a comparison test, the coating disclosed by the invention can effectively protect a hot-metal ladle. After the spray coating is adopted, the damage frequency of the upper part of the hot metal ladle is obviously reduced, and the repair frequency is reduced from 30 times per month to about 5 times per month; the service life of the hot metal ladle is effectively prolonged after the spray coating is adopted, and the average service life of each ladle is prolonged from 800 times to 850 times.
In the invention, bauxite is mainly used as a high-temperature resistant refractory material, and aluminate cement plays a role of a binder. The aluminum and the silicon powder play roles in strengthening the refractory material and increasing the fluidity, can resist high temperature, molten iron erosion and scouring after being mixed, effectively isolate the molten iron from the refractory material of the molten iron tank, reduce the slag formation of the refractory material and be easy to be canned for cleaning.
Claims (3)
1. A spraying method for cleaning slag on the edge of a hot-metal ladle is characterized in that: the refractory material on the edge of the hot-metal ladle is sprayed by the spray paint, so that the refractory material damage caused by cleaning slag on the edge of the ladle is effectively avoided; the spray coating comprises the following components in percentage by weight: grinding 85-90 parts of bauxite, 4-8 parts of aluminate cement, 1-3 parts of aluminum powder and 2-3 parts of silicon powder; mixing the above components to obtain spray coating; bauxite is used as a high-temperature resistant refractory material, and aluminate cement plays a role of a bonding agent; the aluminum and the silicon powder play roles in strengthening the refractory material and increasing the fluidity, can resist high temperature, molten iron erosion and scouring after being mixed, effectively isolate the molten iron from the refractory material of the molten iron tank, reduce the slag formation of the refractory material and be easy to be canned for cleaning.
2. The spray coating method for hot metal ladle slag removal according to claim 1, wherein: and (3) putting the bagged spray paint into a powder spraying tank, and spraying the iron tank by using air pressure wind and medium pressure water.
3. The spray coating method for hot metal ladle slag removal according to claim 1, wherein: the granularity requirement of the spray coating is as follows: more than 50% of the grains have a grain size of less than 200 meshes and the maximum grain size is 0.3 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910890163.4A CN112537963B (en) | 2019-09-20 | 2019-09-20 | Spraying method for cleaning slag on edge of molten iron tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910890163.4A CN112537963B (en) | 2019-09-20 | 2019-09-20 | Spraying method for cleaning slag on edge of molten iron tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112537963A CN112537963A (en) | 2021-03-23 |
| CN112537963B true CN112537963B (en) | 2022-09-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910890163.4A Active CN112537963B (en) | 2019-09-20 | 2019-09-20 | Spraying method for cleaning slag on edge of molten iron tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112537963B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1820839A1 (en) * | 2006-02-16 | 2007-08-22 | Rockwool International A/S | Modified coke lumps for mineral melting furnaces |
| CN101444843A (en) * | 2008-12-30 | 2009-06-03 | 本钢板材股份有限公司 | Slag skimming method |
| CN105819799A (en) * | 2016-03-11 | 2016-08-03 | 大连金州金鞍耐火材料有限公司 | Heatproof and wear resistant lining material |
| CN107285776A (en) * | 2017-06-15 | 2017-10-24 | 郑州瑞泰耐火科技有限公司 | Spheroidal graphite cast-iron sector pouring ladle fireproof coating and preparation method thereof |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE756874A (en) * | 1969-10-08 | 1971-03-01 | Prost Sa | REFRACTORY COMPOSITIONS WITH HYDRAULIC TAP |
| FR2166399A6 (en) * | 1971-06-25 | 1973-08-17 | Prost Produits Refractai | |
| CN100455545C (en) * | 2007-04-26 | 2009-01-28 | 武汉钢铁(集团)公司 | Slag antiseizing spraying material for desulfurization hot-metal bottle |
| CN101407851A (en) * | 2008-11-28 | 2009-04-15 | 莱芜钢铁股份有限公司 | Side hot metal charging chute inner lining of hot-metal mixer and manufacturing method thereof |
| CN102728828B (en) * | 2012-06-21 | 2014-01-15 | 莱芜钢铁集团有限公司 | Ladle working liner and preparation method thereof |
| CN103272996A (en) * | 2013-04-16 | 2013-09-04 | 繁昌县恒鑫汽车零部件有限公司 | Sand sticking-resistant precoated sand |
| CN106242596B (en) * | 2016-07-29 | 2019-01-25 | 攀钢集团攀枝花钢铁研究院有限公司 | A kind of hot-metal bottle anti-sticking spray paint and preparation method thereof and spraying method |
| CN107235733B (en) * | 2017-05-27 | 2018-09-25 | 巩义市金利炉料厂 | A kind of slag adhesion spray paint |
| CN109293375A (en) * | 2018-09-17 | 2019-02-01 | 洛阳润昌窑业有限公司 | A kind of blast furnace iron tap channel refractory pour material and preparation method |
-
2019
- 2019-09-20 CN CN201910890163.4A patent/CN112537963B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1820839A1 (en) * | 2006-02-16 | 2007-08-22 | Rockwool International A/S | Modified coke lumps for mineral melting furnaces |
| CN101444843A (en) * | 2008-12-30 | 2009-06-03 | 本钢板材股份有限公司 | Slag skimming method |
| CN105819799A (en) * | 2016-03-11 | 2016-08-03 | 大连金州金鞍耐火材料有限公司 | Heatproof and wear resistant lining material |
| CN107285776A (en) * | 2017-06-15 | 2017-10-24 | 郑州瑞泰耐火科技有限公司 | Spheroidal graphite cast-iron sector pouring ladle fireproof coating and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN112537963A (en) | 2021-03-23 |
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