KR20170006650A - Coating agent for protecting of skulls producing - Google Patents

Coating agent for protecting of skulls producing Download PDF

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KR20170006650A
KR20170006650A KR1020150097597A KR20150097597A KR20170006650A KR 20170006650 A KR20170006650 A KR 20170006650A KR 1020150097597 A KR1020150097597 A KR 1020150097597A KR 20150097597 A KR20150097597 A KR 20150097597A KR 20170006650 A KR20170006650 A KR 20170006650A
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weight
coating agent
present
coating
graphite
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KR1020150097597A
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KR101743825B1 (en
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박윤오
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박윤오
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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D1/00—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances
    • C09D1/02—Coating compositions, e.g. paints, varnishes or lacquers, based on inorganic substances alkali metal silicates
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
    • C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
    • C09D7/1216—
    • 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
    • C21C5/4606—Lances or injectors
    • C21C5/4613—Refractory coated lances; Immersion lances

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Wood Science & Technology (AREA)
  • Manufacturing & Machinery (AREA)
  • Metallurgy (AREA)
  • Inorganic Chemistry (AREA)
  • Ceramic Products (AREA)
  • Furnace Housings, Linings, Walls, And Ceilings (AREA)

Abstract

The present invention relates to a coating agent for inhibiting formation of skull, intended to inhibit formation of skull attached to crafting and steelmaking facilities. To this end, the coating agent comprises: 40-45 wt% of liquid silica; 2-6 wt% of flaky graphite; 8-12 wt% of a ceramic fiber; and 40-45 wt% of water.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001]

The present invention is now directed to a coating for inhibiting the generation of carbonaceous materials that are presently produced during operation in a steelmaking or steelmaking facility such as a torpedo car, a ladle, a converter, a lance, In order to suppress adhesion of gold and skull, coating agent containing graphite and ceramics fibers is applied to liquid silica to minimize frictional resistance of coating layer and to maintain surface tension of dregs, thereby improving facility durability and efficiency of operation The present invention relates to a coating agent for inhibiting the generation of the present.

The molten iron produced in the blast furnace is subjected to a preliminary treatment with molten iron, refining ladle, etc., or a series of refining operations to refine the impurities in the steelmaking process, . In the equipment for refining the molten steel or molten steel as described above, splashing of the molten metal generated during the operation and the attachment of the slag component near the discharge port are necessary in the course of eliminating the molten iron or molten steel after the operation. do.

Such an excessive attachment to the equipment causes a direct problem such as a decrease in the amount of enriched water and contamination of the molten steel due to the detachment of foreign matter from the attachment site. In addition, in the process of removing the presently attached mechanical impact or flame, It is necessary to reinforce the refractory as well as the refractory.

In particular, the present situation in the steelmaking process is a big problem in various kinds of steelmaking equipments such as a lance, a furnace cover of a converter, and an electrode. For example, in the case of the converter furnace cover, the cover now sticks to the cover at the time of the lecture, and as the time passes, it becomes bigger now, and when the present load becomes larger than the adhesive force, the molten steel is scattered Frequent damage to the operation is also frequent, which may adversely affect the quality of the steel. In addition, in the case of an electrode made of graphite, the surface of the electrode of the portion where the electrode is attached at the time of arc discharge is oxidized and the durability of the electrode is lowered.

In the steelmaking process, the transferring process is performed by injecting a lance into the molten steel and injecting oxygen. After the linting operation, the residual of molten steel is attached to the surface of the lance, Since it is impossible to insert it, it is necessary to remove it now. Such a removing operation not only causes a decrease in productivity but also has a problem that the durability of the lance itself is deteriorated by the thermal change.

In order to solve the above problems, various attempts have been made to coat various steel making facilities. In Korean Patent Laid-Open Publication No. 1995-0014009, 65-70% of zircon, 5-10% of carbon powder and 25-30 % Of a coating agent is formed on the surface of the lance, and the coating agent is applied to the surface of the lance at a thickness of 0.2 to 0.4 mm and then dried. However, It is recognized that the coating agent contains zircon (Zr), which is excellent in heat resistance characteristics, but is difficult to use for a long time because zirconium oxide (ZrO 2 ) is formed at high temperature and is easily dropped together with the coating layer.

With respect to the above disadvantages, Korean Patent Laid-Open Publication No. 2002-0022382 discloses that 11 to 33% by weight of graphite, 11 to 33% by weight of graphite, 13 to 33% by weight of graphite, To 28% by weight and the sum of methylcellulose and sodium phosphate of 27 to 39% by weight is applied to the surface of the furnace system, the surface of the furnace is not attached to the surface of the furnace for a long time, There is no need to use the electrode, and in particular, it is anticipated that an oxidizing property can be prevented and durability can be improved.

Korean Patent Laid-Open Publication No. 10-2006-0070041 also discloses a method for effectively removing slag, which is currently attached to the vicinity of the rejection inlet during operation in a refining ladle, A coating material, and more particularly, A) a scattering material consisting of Si 3 N 4 (Silicon nitride), SiC (Silicon carbide), BN (Boron nitride), AlN, RBSN (Reaction bonded Silicon nitride) 20 to 50% by weight of at least one inorganic powder selected from the group of cargoes; B) the remainder of the water; C) 5 to 10 parts by weight of at least one alkaline silicate component selected from the group consisting of sodium silicate, lithium silicate and potassium silicate, based on 100 parts by weight of the sum of components A) and B); And D) at least one dispersing agent selected from the group consisting of Carboxy Methyl Cellulose (CMC), polyethylene oxide (PEO), polyethyleneimine (PEI) and sodium hexametaphosphate per 100 parts by weight of the sum of Components A) and B) By applying the inorganic coating agent on the surface of the built-in refractory, the slag can be removed effectively during the operation and during the excavation. Therefore, the operation, waiting, And reduce the cost of workloads and refractories.

Meanwhile, in the present invention, a coating agent composed of graphite and ceramic fibers having a particle size in the range of 35 to 45 mu m is coated on the surface of a steelmaking or steelmaking facility or a built-in refractory using liquid silica as a binder and minimized frictional resistance of the coating layer, Which is capable of improving the durability of the equipment and the efficiency of the operation by suppressing the adhesion at present by maximizing the surface tension of the coating material for the production of the present invention.

Korean Patent Publication No. 1995-0014009 (published on June 15, 1995) Korean Patent Publication No. 2002-0022382 (Published Date: Mar. 27, 2002) Korean Patent Laid-Open Publication No. 10-2006-0070041 (published on June 23, 2006)

The present invention relates to a method and apparatus for producing skulls on a surface of a steelmaking or steel making facility such as a torpedo car, a ladle, a convert, a lance, In order to suppress the adhesion, coating agent composed of impression graphite and ceramic fiber excellent in heat resistance and lubricity is applied to liquid silica to form ceramic fiber nano-protrusions on the surface of the coating layer, thereby maximizing the surface tension on the dirt , Thereby minimizing the frictional resistance of the surface of the coating layer and exhibiting the long leaf effect. Now, generation can be suppressed, thereby reducing the inconvenience of removing the present attached to the surface of the equipment and improving the efficiency of operation and durability of the equipment. And to provide an inhibiting coating agent.

The present generation inhibiting coating agent according to the present invention is a coating agent for suppressing the formation which is now attached to a steelmaking and steelmaking facility, which comprises 40 to 45% by weight of liquid silica; 2-6 wt% impression graphite having a particle size in the range of 35-45 μm; 8 to 12% by weight of ceramic fibers; And water in an amount of 40 to 45% by weight.

According to a preferred embodiment of the present invention, the liquid silica is an alkali metal silicate composed of 40 to 41% by weight of SiO 2 , 0.3 to 0.5% by weight of Na 2 O and 58.5 to 59.7% by weight of water, 2 48 to 55% by weight of Al 2 O 3, 26 to 33% by weight of Al 2 O 3 , 15 to 21% by weight of ZrO 2 and 2 to 3.5% by weight of Cr 2 O 3 , And has a refractory temperature of 1850 DEG C by being produced by mixing and melting to a thickness of 1 to 5 mu m and a length of 0.1 to 1.0 mm. The coating method of the present generation inhibiting coating agent is applied to the surface of a steelmaking and steelmaking facility to a thickness of 1 to 5 mm and dried.

The present generation inhibiting coatings of the present invention can be applied to the surface of steel making facilities such as Torpedo car, Ladle, Convert, Lance, In order to suppress the adhesion of the ground and skull, the ceramic fiber coating composed of impression graphite and ceramic fiber excellent in heat resistance and lubrication is applied to form the ceramic fiber nano-protrusion on the surface of the coating layer, The surface tension is increased and the adhesion is remarkably suppressed at the present time during operation.

In the present invention, since the composition for inhibiting the generation is suppressed in terms of friction resistance on the surface of the coating layer due to the combination of constituent components considering chemical and physical properties at the same time, And the durability of the equipment is improved, thereby remarkably improving the productivity of the steel as well as the efficiency of the operation.

Fig. 1 is a photograph showing a state where the refractory brick is now attached to the surface thereof.
FIG. 2 is a photograph showing a state in which the present invention is now attached to a refractory brick to which a coating agent according to the present invention is applied.
Fig. 3 is a photographic image comparing a state where the refractory brick is now attached and a state where the refractory brick is coated with the coating agent according to the present invention.

Hereinafter, the constituent components included in the present generation inhibiting coating agent according to the present invention and their operation will be described in detail. However, the present invention is not limited thereto, , And this does not mean that the technical idea and scope of the present invention are limited.

The present generation inhibiting coating agent of the present invention is a coating agent for inhibiting the formation which is now attached to a steelmaking and steelmaking facility, comprising 40 to 45% by weight of liquid silica; 2-6 wt% impression graphite having a particle size in the range of 35-45 μm; 8 to 12% by weight of ceramic fibers; And 40 to 45% by weight of water.

The liquid silica is used to serve as a basic binder, and is commercially used as an alkali metal silicate such as sodium silicate (sodium silicate), liquid potassium silicate (silicate), etc., and they are liquid at room temperature, As an inorganic material capable of foaming and forming a foam insulating layer, liquid sodium silicate is inexpensive and is mostly used as an adhesive or cement, except for special cases. They are liquid at room temperature and are an inorganic substance capable of foaming at a high temperature by the crystal water to form a foam insulating layer.

Generally, alkali metal silicates are sodium silicate, potassium silicate, lithium silicate, and combinations or modifications thereof. The denatured material is a material having a low content of alkali metal and a high content of silicon dioxide as compared with a general alkali metal silicate or an alkali metal borosilicate in which boron oxide derived from borax or boric acid is contained in the network structure of alkali metal silicate, It is also possible.

In the present invention, 40 to 41% by weight of SiO 2 , 0.3 to 0.5% by weight of Na 2 O and 58.5 to 59.7% by weight of water are added to the liquid silica. It is preferable to use an alkali metal silicate constituted by the ratio of the amount of the alkali metal silicate to the amount of the alkali metal silicate. The liquid silica is water-soluble and, due to the proper content of silicon dioxide, increases adhesiveness, heat resistance and water resistance as well as is very sticky, Not only provides excellent adhesive force but also forms a flat support layer so that cracks and shrinkage do not occur after drying and a coating film excellent in strength can be formed.

Crystalline flake graphite contained in the coating material of the present invention is a layered material having superior lubricity compared to amorphous graphite, and lubricates when a coating agent is applied. Graphite limestone, feldspar, and mica are the main minerals in graphite, whereas coal, uranium, mica, and quartzite are the minerals in the graphite. In case of using graphite with magnesia, 15% Magnesia is used at a weight ratio of about 85%.

In the present invention, impregnated graphite having a particle size of about 35 to 45 μm is added in an amount of about 2 to 6 wt% based on 40 to 45 wt% of the liquid silica. When the amount of graphite impression is less than 2 wt% It is difficult to support the ceramic fibers to be arranged in a proper distribution and it is difficult to arrange the ceramic fibers to be arranged in a proper distribution. When the content of the ceramic fibers exceeds 6% by weight, the dispersibility of the graphite is deteriorated and the viscosity The coating layer is not uniformly applied to the surface of the facility, and therefore, there is a problem such as a decrease in the adhesion of the coating layer and workability.

In addition, the impression graphite has a particle size in the range of 35 to 45 mu m because, when particles smaller than 35 mu m are used, the dispersibility with respect to the liquid silica used as a binder is lowered, The use of particles having a particle size in excess of 탆 causes deterioration of the adhesion of the coating agent. In addition to these reasons, in the present invention, by limiting the particle size of the impression graphite to the above-mentioned range, it is possible to firmly maintain the bonding force with the ceramic fibers located between the particles of the impression graphite, thereby minimizing frictional resistance on the surface of the coating layer, The function of effect is maintained for a long time.

For reference, the lotus effect is based on the assumption that when the water droplet is placed on the bottom surface, the angle of contact between the bottom surface and the side of the water droplet is greater than 60 degrees, and the hydrophilic property is less than 30 degrees In the case of a lotus leaf, it is considered to be 'super hydrophobic' because the contact angle between the bottom surface and the water droplet is more than 120 degrees. In other words, the nano-protrusions formed on the leaf of a lot have a very high surface tension, thereby minimizing the part of the water droplets touching the surface of the leaf, thereby preventing the water droplets from spreading on the surface and forming the space between the protrusions. It is a phenomenon caused by nano protrusion.

For the above reasons, in order to form nano-protrusions having a very high surface tension on the surface of the ceramic fiber used in the present invention, it is necessary to consider the rheology, workability, stability, durability, It is important to design chemical properties. Since the ceramic fibers are contained in the range of 8 to 12% by weight based on 40 to 45% by weight of the liquid silica, the ceramic fibers are densely distributed at even intervals between the particles of the graphite particles so that the surface of the coating layer is like a carpet Since it forms fine bristles (nap), friction resistance against the ground including slag can be minimized and the longevity effect can be exhibited.

The ceramic fiber used in the present invention is a fibrous structure having a thickness of 1 to 5 탆 and a length of 0.1 to 1.0 mm. In general, in order to increase the continuity of the ceramic fiber to the surface of the coating layer, the smaller the thickness and the length of the fibrous structure, However, in the present invention, as a result of repeated trial and error, it has been found that using ceramic fibers having a thickness of 1 to 5 μm and a length of 0.1 mm or more and 1.0 mm or less is suitable to form fine nano-fiber protrusions on the surface of the coating layer Respectively. If the thickness of the ceramic fiber is too small or the length is too short, the protrusion on the surface of the coating layer is too small, so that the surface tension of the coating layer becomes too small and the long-leaf effect can not be exhibited properly. If the thickness is too thick or too long, But also the bond strength with impression graphite was also studied.

In addition, since the ceramic fibers are contained in an amount of about 2 to 4 times as much as that of the graphite, the graphite is well adhered to the graphite and is suitably disposed on the coating layer, thereby minimizing frictional resistance on the surface of the coating layer, It is possible to sufficiently maintain the surface tension to the surface of the substrate, so that the adhesion is remarkably suppressed. In addition, since the ceramic fiber contained in the coating agent is excellent in tensile strength as compared with other tissues, the fracture toughness of the applied coating layer also acts as a tissue reinforcing material, so that the corrosion resistance of the coating agent is superior to that of the conventional coating agent not using the ceramic fiber Of course.

The ceramic fibers usable in the present invention are not limited to specific types, but in the present invention, 48 to 55% by weight of SiO 2 , 26 to 33% by weight of Al 2 O 3 , 15 to 21% by weight of ZrO 2 , 2 O 3 2 to 3.5% by weight is widely applicable to various kinds of refractory materials and steel making equipment. It is mixed and melted at a high temperature with high purity, And has a length of 0.1 to 1.0 mm, which is well known in the art and will not be described in detail.

The silica (SiO 2 , silicon dioxide) constituting the ceramic fiber is a crystalline solid that is transparent to silicon oxides. It is found in sand or quartz, and is distributed in the cell walls of diatomaceous earth. 59% of the crustal mass and 95% It is a major constituent. It has a molecular weight of 60.08, a melting point of 1600 ° C and a specific gravity of 2.648. It is found in sand and quartz, and is distributed in the cell walls of diatoms. Silica is commonly used as grinding glass, abrasive glass, rotating grindstone, grinding stone, and casting mold, and is widely used for manufacturing glass, ceramics, silicon carbide, ferro silicon and silicon, and is also used as refractory and gemstones.

Alumina (Al 2 O 3 ) has a molecular weight of 101.96, a melting point of 2072 ° C, and a specific gravity of 3.965, which is a phosphorus white powder having a hexagonal crystal structure. Alumina is a bauxite mineral raw material that is manufactured through the Bayer process and has been widely used as an abrasive material, scarf plug, insulator, abrasive material, refractory material, ceramic tile, etc. due to high heat resistance, chemical resistance, corrosion resistance, Glass, cutting tools, catalyst carriers, filters, heat exchanger parts, resin fillers, and fibers.

Zirconia (ZrO 2 ) is a white or yellowish brown solid with a very high melting point (about 2700 ° C.), and the valence of zirconium in conventional compounds is mainly tetravalent and somewhat unstable. Many zirconium compounds are used in industrial applications, usually as abrasives, refractories, ceramics for fuel cells, and as components of acid-resistant and alkali-resistant glass. Zirconium dioxide is produced from natural to vadelite, but it is inexpensively recovered from zircon as a commercial product. The zirconia raw material is stabilized zirconia by adding a small amount of MgO, CaO, yttrium oxide (yttria) and the like so that the volume of the zirconia material expands by about 3 to 4% due to crystal transformation at 1000 to 1200 ° C. Lt; RTI ID = 0.0 > C. ≪ / RTI >

As a typical material of the above-mentioned ceramic fiber, silica (SiO 2 ) is a typical material of an acidic refractory material, and is extremely vulnerable to thermal shock up to 700 ° C from room temperature. However, since the expansion of the mineral phase is less than 700 ° C, have. Alumina (Al 2 O 3 ) is added to this to further improve the anti-scrubbing and corrosion resistance, and zirconia (ZrO 2 ) has a high refractory property, hardly wetting against molten metal, has a small thermal conductivity and excellent corrosion resistance .

In order to improve the fire resistance of the ceramic fiber, chromium oxide (Cr 2 O 3 ) is preferably added in an amount of 2 to 3.5% by weight based on the total weight of the ceramic fiber. When the amount of the chromium oxide powder is less than 2% There is a possibility that the ceramic fiber is melted at a high temperature of 1,700 DEG C or more due to a poor effect of the refractory property of the ceramic fiber. When the addition amount of the chromium oxide powder exceeds 3.5 wt%, the sinterability of the ceramic fiber is deteriorated And corrosion resistance and invasiveness are lowered.

Consequently, the ceramic fiber is an acidic silica (SiO 2) and zirconia (ZrO 2) and the alumina (Al 2 O 3) neutral to the materials being formulated containing chromium oxide (Cr 2 O 3), binder, as needed Resistant clay and a high-viscosity organic binder to a thickness of 1 to 5 mu m and a length of 0.1 to 1.0 mm or less. The ceramic fiber thus produced does not generate a low-melting point substance due to the reaction at a high temperature, and thus has a thermal shock resistance sufficient to withstand the temperature of the molten steel reaching around 1560 ° C., and can be stably present for a long time in the structure of the coating layer. The ceramic fiber will have a refractory temperature of up to 1850 ° C.

As described above, the present generation inhibiting coating agent of the present invention is composed of 40 to 45% by weight of liquid silica, 2 to 6% by weight of impression graphite having a particle size in the range of 35 to 45 μm, and 8 to 12% By weight of water in a proportion of 40 to 45% by weight. The viscosity of the coating agent can be controlled by mixing and stirring the coating agent to a thickness of 1 to 5 mm on the surface of a steelmaking and steelmaking facility, Depending on the area, a brush, roller, spray gun, etc. may be used.

The thickness and drying method of the coating agent according to the present invention are very important for the durability of the coating layer and the effect of inhibiting adhesion at this time. If the coating agent is applied in a thickness of less than 1 mm, the desired surface properties and durability are not sufficient. The coating material may be peeled off from a metal material or refractory material. Therefore, it is preferable that the coating material is uniformly and flatly applied to a thickness of 1 to 5 mm or less. Drying of the coated coating agent may be naturally dried in consideration of the condition of the equipment and the temperature during operation, but it is preferable to forcibly dry the coated coating agent with hot air or a flame to prevent adsorption of moisture in the air.

Hereinafter, the present invention will be described with reference to examples in which the present generation inhibiting coating agent is tested, and the present invention will be described with reference to preferred embodiments which can be easily understood and practiced by those skilled in the art.

[Example]

In order to evaluate the performance of the present generation inhibiting coating agent of the present invention, the coating agents of Examples 1 to 3 and Comparative Examples 1 and 2 were respectively prepared under the same conditions by the blend ratio (parts by weight) shown in Table 1 below.

ingredient Example 1 Example 2 Example 3 Comparative Example 1 Comparative Example 2 Liquid silica 40 43 45 45 45 Impression graphite
(Particle size 35 to 45 mu m) 6 4 2 - 5 Impression graphite
(Particle size 5 to 20 mu m) - - - 5 - Ceramic Fiber 12 10 8 - - water 42 43 45 50 50

In order to confirm the effect of the present invention, the coatings prepared in Examples 1 to 3 and Comparative Examples 1 and 2 were coated on the surface of a certain size of refractory material to an average thickness of 2 mm, Was compared with the surface of the refractory material to which the coating agent had not been applied, iron and iron oxide were mixed at the same ratio and sprayed using a flame sprayer.

As a result of the test, the surface tension of the refractory material on the surface of the refractory material coated with the coating agents of Examples 1 to 3 was strong, (See FIGS. 2 and 3). When the coating agent is not applied, the surface tension of the refractory material can not be maintained on the surface of the refractory material, so that it is very difficult to remove the presently adhered material on the surface of the refractory material (See Figs. 1 and 3).

The surface of the refractory material coated with the coating agent as in Comparative Example 1 and Comparative Example 2 is easier to peel off now than when the coating agent is not applied, but the present adhesion strength is stronger than the surface properties (lubricity) It was found that not only the adhesion was suppressed but also the attached now was not easy to remove from the refractory.

As described above, the present generation inhibiting coating agent is coated with a liquid silica coating agent composed of graphite and ceramic fibers having excellent heat resistance and lubricity, and ceramic fiber nano-protrusions are formed on the surface of the coating layer without aggregation of ceramic fibers This is because the composition of the chemical and physical characteristics simultaneously minimizes the frictional resistance on the surface of the coating layer and exhibits the long leaf effect against the scattered dirt. Therefore, it is possible to use a torpedo car, a ladle, Convert, Lance, etc., as well as reducing the difficulties of removing it and improving the durability of the equipment, thereby dramatically improving the efficiency of the steel production as well as the efficiency of the operation. .

Accordingly, the present generation inhibiting coating agent of the present invention can be variously substituted, modified and changed without departing from the technical idea of the present invention. In addition to the coating agent for suppressing the formation now attached to the steelmaking and steelmaking facilities, And can be used in various applications and forms as an environment-friendly material for preventing adhesion of foreign matter by coating or bonding to equipment.

Claims (5)

1. A coating agent for inhibiting the generation of a coating agent attached to a steelmaking and steelmaking facility,
40 to 45% by weight of liquid silica;
2-6 wt% impression graphite having a particle size in the range of 35-45 μm;
8 to 12% by weight of ceramic fibers;
40 to 45% by weight of water;
By weight based on the total weight of the composition. The method according to claim 1,
Wherein the liquid silica is an alkali metal silicate composed of 40 to 41 wt% of SiO 2 , 0.3 to 0.5 wt% of Na 2 O, and 58.5 to 59.7 wt% of water. The method according to claim 1,
Characterized in that the ceramic fibers are composed of 48 to 55% by weight of SiO 2 , 26 to 33% by weight of Al 2 O 3 , 15 to 21% by weight of ZrO 2 and 2 to 3.5% by weight of Cr 2 O 3 Coating agent. The method according to claim 1,
Wherein the ceramic fiber is produced by mixing and melting a high purity mineral at a high temperature to have a thickness of 1 to 5 mu m and a length of 0.1 to 1.0 mm and a refractory temperature of 1850 DEG C. A method for coating a present-generation inhibiting coating, characterized in that the present generation inhibiting coating agent according to any one of claims 1 to 4 is applied to the surface of a wire making and steelmaking facility to a thickness of 1 to 5 mm and dried.
KR1020150097597A 2015-07-09 2015-07-09 Coating agent for protecting of skulls producing KR101743825B1 (en)

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
KR20190047485A (en) * 2017-10-27 2019-05-08 (주)동륜기업 Ceramic Coat Composition having High Heat Resistance

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KR102440272B1 (en) * 2022-03-30 2022-09-06 케이알에스티대한동방(주) Release agent composition for preventing adhesion of molten metal

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KR950014009A (en) 1993-11-09 1995-06-15 조말수 Manufacturing method of converter lance for lance prevention
KR20020022382A (en) 2000-09-20 2002-03-27 이구택 A coating agent for protecting adhesion of lump steel on surface of equipments in iron and steel plant
KR20060070041A (en) 2004-12-20 2006-06-23 재단법인 포항산업과학연구원 Inorganic coating for preventing an adhesion of molten steel

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KR950014009A (en) 1993-11-09 1995-06-15 조말수 Manufacturing method of converter lance for lance prevention
KR20020022382A (en) 2000-09-20 2002-03-27 이구택 A coating agent for protecting adhesion of lump steel on surface of equipments in iron and steel plant
KR20060070041A (en) 2004-12-20 2006-06-23 재단법인 포항산업과학연구원 Inorganic coating for preventing an adhesion of molten steel

Cited By (1)

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KR20190047485A (en) * 2017-10-27 2019-05-08 (주)동륜기업 Ceramic Coat Composition having High Heat Resistance

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