KR20210038974A - High-strength melting furnace for color reinforcement smelting - Google Patents

Abstract

High-strength melting furnace for color reinforcement smelting, furnace wall opening (1), upper furnace wall (2), liquid line upper furnace wall (3), liquid line furnace wall (4), liquid line lower furnace wall (5), sub-task Including the layer (6), the liquid discharge nozzle (7) and the bottom of the furnace (8), each part of the furnace is made of refractory material, and through analyzing the working conditions of different locations of the high-strength melting furnace for colored reinforcement smelting. , It is possible to use different refractory material linings at the corresponding positions, and improve the performance of one or several of the corrosion resistance, thermal shock resistance, erosion resistance, and penetration resistance of this position lining, and extend the service life of the lining.

Description

High-strength melting furnace for color reinforcement smelting

The present invention relates to the field of refractory material technology, and in particular, to a high-strength melting furnace for color reinforcement smelting.

China is a large producer of non-ferrous metals. Transportation, energy, architecture, power and electricity, telecommunications, automobiles, and home appliances are rapidly developing, and at the same time, Chinese neighboring countries such as Japan and Korea need to import large amounts of non-ferrous metals, so various types of composite materials, alloys, and ultra-thin Copper plates, pipes and chemical products have a wide domestic and foreign market demand. As the production capacity continues to expand, a series of problems such as aging technology, aging equipment, high energy consumption, high cost, severe environmental pollution, scarce mining resources, and low recovery rates have arisen and must be addressed urgently. In particular, due to the rapid upgrade of electronic products, China is entering the peak of electronic product disposal. As the scale of e-waste continues to expand, many problems arise. On the one hand, due to the large amount of electronic waste, environmental pollution is increasingly eroding people's living space, on the other hand, due to the rough working method of street merchants, a messy phenomenon is appearing in the e-waste treatment market, and the generated Toxic and harmful components such as dioxins pollute the atmosphere, soil, and groundwater, and the recovery rate of precious metals is low, so the extraction of precious metals is explicitly prohibited in China. How to rationally and effectively treat and recycle electronic waste "urban minerals" to realize the transition from gray industry to green economy is a technological bottleneck limiting the development of the colored industry.

The most effective and harmless treatment methods in the world are owned by countries such as Japan and Belgium, and recycling companies in these countries have advanced treatment technologies and equipment, which are among the best in the world. China still uses simple, primitive and backward traditional methods, and China does not have effective advanced pollution-free treatment technology. In China, smelting furnaces were imported from Japan and Belgium, but lining materials have a lifespan of one month and some are shorter. In order to promote the rapid development of the colored industry and improve the level of non-ferrous metal smelting technology, in combination with the current demand for the use of non-ferrous metal metallurgy process strengthening (increased rate of strengthening metallurgy) for refractory materials, the present application is mainly in some way Technical research was conducted on whether to improve the material quality of special, critical and strict parts in the metallurgical process, extend the service life of high-temperature kiln linings, and achieve a more environmentally friendly production process.

The NRTS melting furnace (upper blowing smelting furnace using oxygen) designed by the Mo Non-ferrous Metals Technology Center in China effectively treats wastes such as electronic waste, industrial waste, low-grade copper-containing waste and anode mud, and has a relatively high recovery rate of rare metals in China. As the first electronic waste melting and refining furnace, its smelting technology exceeds the foreign level. However, due to the harsh smelting environment, the lining material needs properties such as acid resistance, alkali resistance and high temperature resistance, and metal slag corrosion resistance, and thus the material life is relatively short, so that it can meet the normal demand for use. Therefore, the development of high-performance, long-life series multi-composite spinel furnace lining materials for energy-saving and eco-friendly advanced electronic waste and non-ferrous metal solid waste smelting-refining furnaces is urgent.

Traditional lining materials use mostly solid phase sintering to produce magnesium-chromium and magnesium-aluminum lining materials. Solid phase sintering increases the porosity of the lining material and decreases the penetration resistance of the lining material. Chromium between the brick by a direct bond and Fe ₂ O _3, in which Fe ₂ O ₃ is an amount of 7-12%, in the kiln for intermittent production of Fe ₂ O ₃ and the FeO contained in the slag-traditional method magnesium Decomposition and oxidation reactions occur frequently and interchangeably in the magnesium-chromium lining material, seriously deteriorating the structural strength of the magnesium-chromium lining material, reducing the ability of the magnesium-chromium lining material to withstand high temperatures and slag corrosion, It is easy to cause premature damage to the magnesium lining material. _{In addition, Cr 2} O ₃ of the magnesium-chromium lining material is very important for the penetration resistance and slag corrosion resistance of the lining material, but too high Cr ₂ O ₃ generates excessive Cr ⁶⁺ , which is not conducive to environmental protection. Too much chromium content reduces the high temperature mechanical properties of the lining material and increases the production cost. In order to improve the penetration resistance of the magnesium-chromium lining material, the traditional method uses magnesium salt impregnation, reducing the porosity and pore diameter of the lining material, and improving the penetration resistance of the magnesium-chromium lining material, but the active ingredient of the magnesium salt. The content is limited, and the lining material is hydrated due to the penetration of moisture during the impregnation process, resulting in loosening of the structure and further damage to the structure in the subsequent drying process, and a decomposition reaction occurs in the magnesium salt in a high temperature environment, resulting in porosity. This rises and the permeation resistance can be reduced. In addition, in order to improve the penetration resistance of the magnesium-chromium lining material, there is a method of directly adding alumina powder to the magnesium-chromium lining material, but the alumina powder is difficult to effectively disperse and the physicochemical properties of the lining material are unevenly distributed. The performance of the chrome lining material may be unstable. When the penetration resistance of the magnesium-chromium lining material cannot be improved, a modified layer is easily formed on the surface, and when the temperature fluctuates, the modified layer is easily ruptured or even peeled off. Magnesium-aluminum lining material has good thermal shock resistance, but slag corrosion resistance has obvious defects, and alumina powder reacts with the metal oxide FeO in _{FeO-SiO 2 slag to form a high melting point FeO-Al 2} O ₃ spinel, and slag By increasing the viscosity of the lining material, it is easy for the slag to accumulate unevenly in the lining material, and gradually reduces the thermal shock resistance of the lining material, and finally, the life of the lining material is quickly shortened.

The present invention provides a new solution to the problems present in traditional furnaces and furnace linings produced by traditional methods.

As a result of the search, no patent technology similar to the present invention was found in the prior art. For comparison, we provide the following patented technologies.

The invention patent of Patent Application No. CN91103368.8 discloses a fired magnesium-aluminum-chromium refractory brick and a method of manufacturing the same. Magnesia particles, magnesia fine powder, bauxite or industrial alumina, chromium ore or Cr ₂ O ₃ powder is co-pulverized into fine powder less than 0.088 mm, and paper pulp waste liquid or salt water is added to the powder to be used as a binder, and mixed. After the sludge is formed, compression and firing are performed. Although the thermal shock resistance and slag corrosion resistance have been improved to some extent, the firing temperature is still high _{, so it is easy to volatilize Cr 2} O ₃ , and if paper pulp waste liquid or salt water is used as a binder, more impurities are introduced and it is difficult to analyze the composition of impurities. It has a certain effect on the stability of the performance.

The invention patent of Patent Application No. CN201210257706.7 discloses a composite spinel zirconium refractory material for smelting colored heavy metals. The present invention mixes corundum, magnesia chromium, magnesia alumina spinel, magnesia, chromium green, zirconium dioxide particles, adds aluminum dihydrogen phosphate as a binder, and uses hydraulic press molding under conditions of 1700° C.-1820° C., The composite spinel zirconium refractory material is fired in a high temperature tunnel kiln. The present invention changes the crystal phase by adding chromium green without adding chromium ore, thereby ^{reducing the production of Cr 6+} and is beneficial for environmental protection. By _{introducing ZrO 2} , the high temperature performance of the refractory material is improved, and the service life of the refractory material is extended. However _{, it is not easy to determine and control the amount of ZrO 2} used, and if the amount is too large, the generated fine cracks become cracks that affect the thermal shock resistance of the refractory material, and how much is the amount used? If it is small, the heat shock resistance of the refractory material cannot be improved, and more materials are introduced, resulting in an increase in process cost.

The invention patent of Patent Application No. CN201410583333.1 discloses a flexible composite spinel tin refractory material for smelting noble metals by fire method and a method of manufacturing the same. This method mixes dense corundum, chromium slag, magnesia, chromium green, electro-melting zirconia, tin oxide, and a mixed solution of phosphoric and oxalic acid as a binder, trapping the material for 24 hours, and then pressing it into bricks in a hydraulic press. , Drying for 72 hours or more under the conditions of 100-120 ℃, firing at 1650-1700 ℃, the firing time is 150-180 minutes, thereby obtaining a flexible composite spinel tin refractory material for smelting precious metals by chemical method. This method introduces an appropriate amount of ZrO ₂ to the matrix part and changes the crystal phase to create fine cracks, thereby improving the thermal shock resistance of the product, but ZrO ₂ is not easy to determine and control the amount used, and it is generated if the amount is too large. The resulting fine cracks become cracks that affect the thermal shock resistance of the refractory material, and if the amount is too small, not only cannot the thermal shock resistance be improved, but also more materials are introduced, increasing the process cost. The product manufactured by this method has a Cr ₂ O ₃ content in the range of 3.5-9.0%, so the _{content of Cr 2} O ₃ is less than that of other processes, so environmental pollution can be reduced, but since it affects the high temperature performance of the refractory material, Cr ₂ In order _{to replace O 3} and exhibit erosion resistance and slag corrosion resistance, SnO ₂ was introduced. However, _{the melting point of SnO 2} is 1630° C., which melts during sintering so that the physicochemical properties of the refractory material are unevenly distributed, and the performance of the refractory material is deteriorated.

The invention patent of Patent Application No. CN201611160536.5 discloses a low porosity magnesium-chromium brick for color smelting and a method of manufacturing the same. This method mixes electro-melting magnesia chromium, chromium concentrate, magnesia, alumina and mixed binder, uses a pressure mechanism to obtain bricks, sinters after drying, and keeps warm, magnesium-chromium bricks are placed in a pressure vessel, and the degree of vacuum is Under the conditions of 1000-1500 Pa, the magnesium-chromium brick was completely immersed by adding a nano-alumina suspension, and the magnesium-chromium brick was pressure-impregnated, and the impregnated magnesium-chromium brick was dried with microwave to obtain a low porosity magnesium-chromium brick. Get The effect of using nano alumina is to reduce porosity and pore size, but nano alumina easily reacts _{with slag to form FeO-Al 2} O ₃ spinel to increase the viscosity of the slag, and it is unevenly accumulated in the refractory material, and the structure of the refractory material Destruction, and gradually reduce the thermal shock resistance of the refractory material.

The invention patent of Patent Application No. CN201710580820.6 discloses a copper composite high performance magnesium-chromium brick and a method of manufacturing the same. In this method, discarded magnesium-chromium bricks are first granulated, then hydrated to remove soluble sulfate, dried and then granulated, and calcined magnesia powder, chromium concentrate fine powder, oxidation Chromium and copper oxide powder are added, and it is uniformly processed into powder with a particle size of 0.088 mm or less, then compressed, dried and then sintered, coarse pulverized, fine pulverized, processed, and copper composite magnesium-chromium synthetic sand of various particle sizes The synthetic sand and the chromium concentrate fine powder and the electro-melted magnesia chromium fine powder or the electro-melted magnesia fine powder selected from the batch are mixed, and then mixed by adding a sulfite pulp waste liquid as a binder, and a powder having a particle size of 0.088 mm or less. After the addition of, the brick was prepared, drying, firing, _{vacuum impregnation treatment with CuSO 4} solution, and finally drying to prepare a magnesium-chromium brick. If the impregnation treatment is performed with a _{CuSO 4 solution, the CuO-Cu 2} O redox system melts and self-closed pores can be created _{under the use temperature, but the introduced CuO-Cu 2} O redox system oxidizes Fe ₂ O ₃ -FeO. As it acts on the refractory material with the reduction system, the reaction in the refractory material is more frequent and the damage increases.

In order to solve the shortcomings in the background technology, the first technical problem to be solved by the present invention is to provide a high-strength melting furnace for colored reinforced smelting.

In order to realize the above-described object of the invention, the present invention provides the following technical solutions.

As a high-strength melting furnace for color reinforcement smelting, the furnace interior has a furnace wall opening sequentially from top to bottom, an upper furnace wall, a liquid line upper furnace wall, a liquid line furnace wall, a liquid line lower furnace wall, a sub working layer, a liquid discharge nozzle, and The bottom of the furnace,

Each part of the furnace is made of refractory materials,

The constituent components of the refractory material for the furnace wall opening are electro-melted chromium corundum, chromium oxide and a gel binder,

Constituents of the refractory material for the upper furnace wall are chromium corundum, electro-melting chromium oxide, chromium oxide, high chromium ore, brown corundum powder, α-alumina fine powder, and a binder,

Constituents of the refractory material for the furnace wall above the liquid line are aluminum-chromium eutectic, aluminum-magnesium spinel, iron-aluminum spinel, and a binder,

Constituents of the refractory material for the liquid line furnace wall and the refractory material for the liquid discharge nozzle are aluminum-chromium eutectic, iron-chromium spinel, magnesium-chromium spinel, iron-aluminum spinel and a gel binder,

Constituents of the refractory material for the furnace wall below the liquid line are aluminum-chromium eutectic, magnesium-chromium spinel, magnesium-aluminum spinel, α-alumina fine powder, aluminum-magnesium spinel, and a gel binder,

The constituent components of the refractory material for the sub working layer are electro-melted chromium corundum, chromium oxide, and a binder,

Constituents of the refractory material for the furnace floor are aluminum-chromium eutectic, aluminum-magnesium spinel, iron-aluminum spinel, and a binder.

In order to further improve the technical solution, the components of the refractory material for the furnace wall opening of the present invention are, depending on parts by weight, 90-95 parts of electro-melted chromium corundum, 5-8 parts of chromium oxide, 5-6 parts of the gel binder. ego,

The components of the refractory material for the upper furnace wall are, depending on parts by weight, chromium corundum 60-70 parts, electro-melting chromium oxide 4-6 parts, chromium oxide 3-5 parts, high chromium ore 15-20 parts, brown corundum powder 5-8 parts, α-alumina fine powder 4-6 parts, binder 5-6 parts,

The components of the refractory material for the furnace wall above the liquid line are, depending on parts by weight, 60-70 parts of chromium corundum, 4-6 parts of electro-melting chromium oxide, 3-5 parts of chromium oxide, 15-20 parts of high chromium ore, brown Corundum powder 5-8 parts, α-alumina fine powder 4-6 parts, binder 5-6 parts,

Constituents of the refractory material for the liquid line furnace wall and liquid discharge nozzle, according to parts by weight, 60-70 parts of aluminum-chromium eutectic body, 5-15 parts of aluminum magnesium spinel, 15-25 parts of iron-aluminum spinel and binder 5-6 copies,

Constituents of the refractory material for the furnace wall below the liquid line are, depending on parts by weight, aluminum-chromium eutectic 60-70 parts, magnesium-chromium spinel 10-20 parts, magnesium-aluminum spinel 10-20 parts, α-alumina fine 5-15 parts of powder and aluminum-magnesium spinel and 5-8 parts of gel binder,

The constituent components of the refractory material for the sub-working layer are 90-95 parts of electro-melted chromium corundum, 5-8 parts of chromium oxide and 5-6 parts of a binder, depending on parts by weight,

Constituents of the refractory material for the furnace floor are 60-70 parts of aluminum-chromium eutectic body, 15-25 parts of aluminum-magnesium spinel, 5-15 parts of iron-aluminum spinel, and 5-6 parts of the binder, depending on parts by weight. .

In order to further improve the technical solution, the binder in the refractory material for the furnace wall opening and the refractory material for the upper furnace wall of the present invention is a mixture of white aluron blend and water, and the mass ratio of white aluron blend and water is 7:3,

The binder in the refractory material for the furnace wall above the liquid line and the refractory material for the bottom of the furnace is a mixture of clay, phosphoric acid solution, aluminum dihydrogen phosphate solution and water, and the mass ratio of clay, phosphoric acid solution, aluminum dihydrogen phosphate solution and water is 3:3: 3:1,

The gel binder in the refractory material for the walls of the liquid line furnace, the refractory material for the liquid discharge nozzle, and the refractory material for the sub working layer is prepared by a solution of α-alumina fine powder and dihydrogen phosphate, where α-alumina fine powder and dihydrogen phosphate The mass ratio of the aluminum solution is 3:7-5:5,

The gel binder in the refractory material for the furnace wall below the liquid line is made of aluminum dihydrogen phosphate and α-alumina fine powder in a 1:1 ratio.

In order to further improve the technical solution, in the refractory material for the furnace wall opening of the present invention, the particle size distribution range of the electro-melted chromium corundum and chromium oxide is 5-3 mm, 3-1 mm, 1-0.1 mm, 180 Less than or equal to mesh and less than or equal to 325 mesh,

In the refractory material for the upper furnace wall, the particle size distribution range of chromium corundum, electro-melting chromium oxide, chromium oxide, high chromium ore, brown corundum powder, and α-alumina fine powder is 5-3 mm, 3-1 mm, 1 -0.1 mm, 180 mesh or less, 325 mesh or less, and 5 μ or less,

In the refractory material for the furnace wall above the liquid line, the particle size distribution range of aluminum-chromium eutectic body, aluminum-magnesium spinel and iron-aluminum spinel is 5-3 mm, 3-1 mm, 1-0.1 mm, 180 mesh or less. , 325 mesh or less and 5 μ or less,

In the refractory material for the liquid line furnace wall and the refractory material for the liquid discharge nozzle, the particle size distribution ranges of aluminum-chromium eutectic, aluminum-magnesium spinel, and iron-aluminum spinel are 8-5 mm, 5-3 mm, 3- 1 mm, 1-0.1 mm, 180 mesh or less and 325 mesh or less,

In the refractory material for the furnace wall below the liquid line, the particle size distribution range of aluminum-chromium eutectic, magnesium-chromium spinel, magnesium-aluminum spinel, α-alumina fine powder, and aluminum-magnesium spinel is 5-3 mm, 3- 1 mm, 1-0.1 mm, 180 mesh or less, 325 mesh or less, and 5 μ or less,

In the refractory material for the sub-working layer, the particle size distribution range of aluminum-chromium eutectic body, aluminum magnesium spinel and iron-aluminum spinel is 5-3 mm, 3-1 mm, 1-0.1 mm, 180 mesh or less, 325 mesh. Or less and 5 μ or less,

In the refractory material for the furnace floor, the particle size distribution range of aluminum-chromium eutectic body, aluminum-magnesium spinel, and iron-aluminum spinel is 5-3 mm, 3-1 mm, 1-0.1 mm, 180 mesh or less, 325 Mesh or less and 5 μ or less.

Compared to the prior art, the advantageous effects of the present invention are as follows.

The refractory material for the furnace wall opening uses electro-melting chromium corundum and chromium oxide as raw materials, thereby reducing the MgO content, reducing the MgO-related dissolution reaction and subsequent decomposition reactions occurring in the refractory material, and reducing the related thermal reaction. Reduction, and the refractory material structure can be avoided from being destroyed by frequent reactions. The electro-melting chromium corundum allows the refractory material to have excellent high temperature performance, excellent thermal shock resistance and excellent corrosion resistance. When chromium oxide is added, the penetration resistance of the refractory material can be improved. Since the refractory material in the present technical solution requires firing, a temporary binder is used, and the binder is a mixture of a white aleuron blend and water, and such a binder is readily available raw materials, low cost, and mutually In addition to promoting penetration, it makes the refractory material more dense, and after firing, the binder is decomposed and lost, and when discarded, does not cause environmental pollution.

The refractory material for the furnace upper furnace wall uses chromium corundum, electro-melting chromium oxide, chromium oxide, high chromium ore, brown corundum powder, and α-alumina fine powder as raw materials, thereby reducing the MgO content and It is possible to reduce the MgO-related dissolution reaction and subsequent decomposition reaction, reduce the associated thermal reaction, and avoid the refractory material structure from being destroyed by frequent reactions. Electrolyzed chromium oxide, chromium oxide, and high chromium ore reduce the porosity, improve the permeability of refractory materials, prevent a large amount of acid-base gas from penetrating into the refractory material and cause reaction, and It avoids erosion of the internal structure, and by adding raw materials such as brown corundum powder and chromium corundum, it improves the heat shock resistance and erosion resistance of the refractory material.Since α-alumina fine powder is distributed in the refractory material, porosity and pore diameter Is further lowered, and is advantageous in improving the permeability of the refractory material.

The refractory material for the furnace wall above the furnace liquid line uses aluminum-chromium eutectic body, aluminum-magnesium spinel, and iron-aluminum spinel as raw materials, which lowers the sintering temperature and reduces the volatilization of dichromium trioxide, while aluminum -The magnesium spinel lattice constant is relatively small, and when firing, it can be filled between different unit cells, avoiding the problem of lowering density and slug corrosion resistance due to material expansion, and also maintaining small cracks between crystals, and heat resistance of refractory materials. Impact resistance can be guaranteed. In addition, since clay, phosphoric acid solution, aluminum dihydrogen phosphate solution, and water are used as binders, the phosphoric acid solution reacts with the alumina in the refractory material to form a phosphoric acid bond to form a certain network structure, and clay is some raw material during firing. Because it is melted together, it can fill a relatively large gap between crystals, and the viscosity of aluminum dihydrogen phosphate is relatively large, further improving the binding effect of the binder, and finally making the manufactured refractory material more dense, Improves slug corrosion resistance and penetration resistance of refractory materials. In addition, since a relatively small part by weight of aluminum-magnesium spinel is used, the MgO content is reduced, the MgO-related dissolution reaction and subsequent decomposition reactions occurring in the refractory material are reduced, the related thermal reaction is reduced, and the refractory material The structure can be avoided from being destroyed by frequent reactions. The aluminum-chromium eutectic body has excellent high temperature performance, relatively strong slug corrosion resistance, relatively good erosion resistance of magnesium-aluminum refractory materials, and the addition of iron-aluminum spinel lowers the refractory material porosity, and refractory material Improves the permeability of

The refractory materials for the furnace liquid line furnace wall and the liquid discharge nozzle area use aluminum-chromium eutectic body, iron-chromium spinel, relatively small parts by weight of magnesium-chromium spinel, iron-aluminum spinel as raw materials, and reduce the MgO content. And, it is possible to reduce the MgO-related dissolution reaction and subsequent decomposition reaction occurring in the refractory material, and avoid the phenomenon of melting and destruction due to frequent reactions in the refractory material structure. In addition, when firing, the aluminum-magnesium spinel lattice constant is relatively small, can be filled between different unit cells, avoid the problem of lowering the density and slug corrosion resistance due to material expansion, and also maintain small cracks between crystals, and Thermal shock resistance can be guaranteed. The aluminum-chromium eutectic has excellent high-temperature performance and relatively strong slug corrosion resistance. Iron-chromium spinel makes the refractory material a constant thermal shock resistance and penetration resistance. Magnesium-chromium spinel and iron-aluminum spinel improve the permeability of the refractory material, while iron-aluminum spinel lowers the porosity of the refractory material, and further enhances the penetration resistance of the refractory material. This technical solution uses aluminum dihydrogen phosphate solution and α-alumina fine powder as a gel binder, so that various raw materials and gel binders can penetrate each other, fill in some intergranular voids, and prevent some intercrystalline cracks. In order to maintain, it makes the refractory material more dense, allows molten slag to accumulate rapidly in the refractory material, and makes the refractory material more excellent thermal shock resistance.

The refractory material for the furnace wall under the furnace liquid line is a relatively easily available and inexpensive aluminum-chromium eutectic material, magnesium-chromium spinel, magnesium-aluminum spinel, α-alumina fine powder, and ceramic fired by aluminum-magnesium spinel as raw materials. The refractory material for the furnace wall below the colored smelting smelting furnace liquid line is finally prepared through drying, kiln firing and thermal insulation after dry mixing the raw materials and compressing with water. Ceramics manufactured by firing magnesium-chromium spinel, α-alumina fine powder, and aluminum-magnesium spinel together can lower the porosity and pore diameter of refractory materials, reduce the accumulation of molten slag in the material, and refractory materials. The penetration resistance of the can be improved. Therefore, under the joint action of various materials, the refractory material for the furnace wall under the colored smelting melting furnace liquid line of the present invention has an excellent performance index.

The refractory material for the sub-working layer of the colored smelting smelting furnace uses electro-melting chromium corundum and chromium oxide as raw materials, and the gel binder is made of α-alumina fine powder and aluminum dihydrogen phosphate solution, so its chemical stability is relatively excellent. , The addition of clay allows some raw materials to melt together with the clay during firing, so that a relatively large inter-crystal gap can be filled, and the prepared refractory material can have excellent thermal shock resistance, corrosion resistance, and penetration resistance.

The refractory material for the bottom of the color smelting smelting furnace furnace uses aluminum-chromium eutectic body, aluminum-magnesium spinel, and iron-aluminum spinel as raw materials, so that the MgO content is reduced, and the MgO-related dissolution reaction occurring in the refractory material and subsequent It reduces the decomposition reaction and can maintain the integrity of the refractory material structure. The aluminum-chromium material has excellent high-temperature performance and relatively strong erosion resistance, the magnesium-aluminum refractory material has relatively excellent erosion resistance, and the addition of iron-aluminum spinel lowers the porosity of the refractory material, and the refractory material Further strengthens the permeability of the product. This technical solution uses clay, phosphoric acid solution, aluminum dihydrogen phosphate solution and water as a binder, so that various raw materials and binders penetrate each other, make the refractory material more dense, and improve the high-temperature performance of the refractory material. I can make it.

By analyzing the working conditions at different locations of the high-strength melting furnace for colored reinforcement smelting, different refractory material linings are used in the imaginable locations, and one or several of the erosion resistance, thermal shock resistance, corrosion resistance, and penetration resistance of this location lining are used. It can improve the performance of the dog, greatly extend the service life of the lining, avoid frequent repairs and replacement of the lining, and save a large amount of manpower and money.

1 is a schematic structural diagram of a high-strength melting furnace for color reinforcement smelting of the present invention.

The present invention can be described in detail through the following examples, and the purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.

The high-strength melting furnace for color reinforcement smelting includes a furnace wall opening, an upper furnace wall, a liquid line upper furnace wall, a liquid line furnace wall, a liquid line lower furnace wall, a sub working bed, a liquid discharge nozzle and a furnace floor.

Here, the inside of the high-strength melting furnace for colored reinforcement smelting is a furnace wall opening sequentially from top to bottom, an upper furnace wall, a liquid line upper furnace wall, a liquid line furnace wall, a liquid line lower furnace wall, a liquid discharge nozzle and a furnace floor, and the sub The working layer covers the interior of the high-strength smelting furnace for colored reinforced smelting, and the body of the high-strength smelting furnace for colored reinforced smelting is constructed of fire-resistant clay.

The furnace wall opening, the upper furnace wall, the liquid line upper furnace wall, the liquid line furnace wall, the liquid line lower furnace wall, the liquid discharge nozzle, the furnace floor and the sub working layer are each made of different refractory materials.

Example 1

According to the particle size composition and the principle that the front is thicker and the back is thinner, 90 parts of electro-melted chromium corundum and 5 parts of chromium oxide are first dry-mixed in a wet grinder, and after the particles and fine powder are uniformly mixed, 90 parts of electro-melted chromium corundum and 5 parts of chromium oxide is added, and the binder is a mixture of a white aleuron blend and water in a 7:3 mass ratio, compacted at a pressure of 400 T, molded into a brick, and the resulting brick is put in a dryer, and the resulting brick is placed in a dryer for 48 hours under a temperature environment of 200°C It is dried to produce a refractory material for the furnace wall openings of the colored smelting furnace.

According to the particle size composition and the principle that the front is thicker and the back is thinner, 67 parts of chromium corundum, 5.5 parts of electro-melting chromium oxide, 4 parts of chromium oxide, 20 parts of high chromium ore, 8 parts of brown corundum powder and 6 parts of α-alumina fine powder are prepared. First, dry mix in a wet grinder, and after the particles and fine powder are uniformly mixed, 5.5 parts of a binder is added, and the binder is a mixture of a white aleuron blend and water in a 7:3 mass ratio, and compressed with a pressure of 400 T to form a brick. After molding, the obtained brick is put in a dryer and dried for 24 hours under a temperature environment of 100°C, and then the dried brick is put in a high-temperature tunnel kiln and fired, the firing temperature is 1300°C, and the heat retention time under the firing temperature condition is 8 hours, Thereby, a refractory material for the upper furnace wall of the colored smelting melting furnace is produced.

According to the particle size composition and the principle that the front is thicker and the back is thinner, 60 parts of aluminum-chromium eutectic body, 5 parts of aluminum-magnesium spinel, and 20 parts of iron-aluminum spinel are first dry mixed in a wet grinder, and the particles and fine powder are uniformly mixed. After mixing, 5 parts of a binder is added, and the binder is a mixture of a 3:3:3:1 mass ratio of clay, a phosphoric acid solution, an aluminum dihydrogen phosphate solution, and water. Compressed with a pressure of 630 T and molded into bricks, the resulting bricks are put in a dryer, dried for 24-48 hours in a 200 ℃ temperature environment, and then the dried bricks are put in a high-temperature tunnel kiln and fired, and the firing temperature is 1500 ℃ And the heat retention time under the firing temperature condition is 6-8 hours, thereby producing a refractory material for the furnace wall above the colored smelting smelting furnace liquid line.

According to the particle size composition and the principle that the front is thicker and thinner toward the back, 50 parts of aluminum-chromium eutectic body, 20 parts of iron-chromium spinel, 4 parts of magnesium-chromium spinel and 30 parts of iron-aluminum spinel are first dry mixed in a wet grinder, After the particles and fine powder are uniformly mixed, 3 parts of the gel binder is added. It is compressed under a pressure of 1000 T and molded into bricks, and the resulting bricks are put in a dryer, dried for 24 hours under a temperature of 140°C, and then the dried bricks are put in a high-temperature tunnel kiln and fired, the firing temperature is 1600°C. The heat retention time under the firing temperature condition is 8 hours, thereby producing a refractory material for the colored smelting melting furnace liquid line furnace wall and the liquid discharge nozzle area.

In accordance with the particle size composition and the principle that the front is thicker and thinner toward the back, 60 parts of aluminum-chromium eutectic body, 20 parts of magnesium-chromium spinel, 10 parts of magnesium-aluminum spinel, α-alumina fine powder and 15 parts of aluminum-magnesium spinel are wet first. Dry mixing in a grinder, after uniformly mixing the particles and fine powder, 5 parts of a gel binder is added, and the gel binder is prepared by aluminum dihydrogen phosphate and α-alumina fine powder in a 1:1 mass ratio, and a pressure of 1000 T And then compacted and molded into bricks, the resulting bricks are put in a dryer, dried for 24 hours in a 150°C temperature environment, and then the dried bricks are put in a high-temperature tunnel kiln and fired, and the firing temperature is 1400°C, under the conditions of the firing temperature. The heat retention time is 8 hours, thereby producing a refractory material for the furnace wall below the colored smelting melting furnace liquid line.

According to the particle size composition and the principle that the front is thicker and the back is thinner, 90 parts of electric fusion chromium corundum and 5 parts of chromium oxide are first dry mixed in a wet grinder, and after the particles and fine powder are uniformly mixed, 5 parts of a gel binder is added. It is compressed with a pressure of 400 T and molded into bricks, and the resulting bricks are put in a dryer and dried for 24 hours under a temperature environment of 100-150 ℃, and then the dried bricks are put in a high-temperature tunnel kiln and fired. The firing temperature is 1300 ℃ And the heat retention time under the firing temperature condition is 8 hours, thereby producing a refractory material for a colored smelting melting furnace sub-working layer.

According to the particle size composition and the principle that the front is thicker and thinner toward the back, 60 parts of aluminum-chromium eutectic body, 20 parts of aluminum-magnesium spinel and 5 parts of iron-aluminum spinel are first dry mixed in a wet grinder, and the particles and fine powder are uniformly mixed. After mixing, 5 parts of a binder is added, and the binder is a mixture of clay, phosphoric acid solution, aluminum dihydrogen phosphate solution, and water in a mass ratio of 3:3:3:1, compressed at a pressure of 630 T, and molded into bricks. Put in a dryer, dried for 24 hours under a temperature environment of 250 ℃, and then put the dried brick in a high-temperature tunnel kiln and fired, the firing temperature is 1500℃, and the heat retention time under the firing temperature condition is 6 hours, thereby color smelting Refractory materials for the bottom of the melting furnace furnace are produced.

Example 2

According to the particle size composition and the principle that the front is thicker and thinner toward the back, 92 parts of electro-melted chromium corundum and 6 parts of chromium oxide are first dry-mixed in a wet grinder, and after the particles and fine powder are uniformly mixed, the 4:5 mass ratio of α- 5 parts of a gel binder prepared by alumina fine powder and aluminum dihydrogen phosphate solution was added, compressed under a pressure of 480 T, molded into a brick, and the resulting brick was put in a dryer and dried for 48 hours under a temperature environment of 250°C, Refractory materials are produced for smelting furnace furnace wall openings.

According to the particle size composition and the principle that the front is thicker and thinner toward the back, 60 parts of chromium corundum, 4 parts of electro-melting chromium oxide, 3 parts of chromium oxide, 15 parts of high chromium ore, 5 parts of brown corundum powder and 4 parts of α-alumina fine powder are used. First, dry mix in a wet grinder, and after the particles and fine powder are uniformly mixed, a binder is added, and the binder is a mixture of white aleuron blend and water in a 7:3 mass ratio, compressed at a pressure of 630 T, and molded into bricks. The resulting brick is put in a dryer and dried for 24 hours under a temperature of 150°C, and then the dried brick is put in a high-temperature tunnel kiln and fired, the firing temperature is 1350°C, and the heat retention time under the firing temperature condition is 8 hours, Thereby, a refractory material for the upper furnace wall of the colored smelting smelting furnace is produced.

According to the particle size composition and the principle that the front is thicker and thinner toward the back, 63 parts of aluminum-chromium eutectic body, 7 parts of aluminum-magnesium spinel, and 15 parts of iron-aluminum spinel are first dry mixed in a wet grinder, and the particles and fine powder are uniformly mixed. After mixing, 5.5 parts of a binder was added, and the binder was a mixture of clay, phosphoric acid solution, aluminum dihydrogen phosphate solution and water in a 3:3:3:1 mass ratio, compressed under a pressure of 800 T, and molded into bricks, and obtained Put the bricks in a dryer and dry them for 48 hours in a 200 ℃ temperature environment, and then put the dried bricks in a high-temperature tunnel kiln and fire them, the firing temperature is 1300 ℃, the heat retention time under the firing temperature conditions is 6 hours, thereby colored A refractory material for the furnace wall above the smelting melting furnace liquid line is produced.

According to the particle size composition and the principle that the front is thicker and thinner toward the back, 60 parts of aluminum-chromium eutectic body, 10 parts of iron-chromium spinel, 7 parts of magnesium-chromium spinel and 20 parts of iron-aluminum spinel are first dry mixed in a wet grinder, After the particles and fine powder are uniformly mixed, 6 parts of a gel binder is added, compressed at a pressure of 1200 T, and molded into a brick, and the resulting brick is put in a dryer, dried for 24 hours in a temperature environment of 140° C., and then dried. The brick is put into a high-temperature tunnel kiln and fired, the firing temperature is 1550°C, and the heat retention time under the firing temperature condition is 7 hours, thereby producing a refractory material for the colored smelting smelting furnace liquid line furnace wall and the liquid discharge nozzle area.

According to the particle size composition and the principle that the front is thicker and the back is thinner, 70 parts of aluminum-chromium eutectic body, 10 parts of magnesium-chromium spinel, 20 parts of magnesium-aluminum spinel, α-alumina fine powder and 5 parts of aluminum-magnesium spinel are wet first. Dry mixing in a pulverizer, after the particles and fine powder are uniformly mixed, 8 parts of a gel binder are added, and the gel binder is prepared by aluminum dihydrogen phosphate and α-alumina fine powder in a 1:1 mass ratio, and a pressure of 1000 T And then compacted and molded into bricks. Put the resulting brick in a dryer and dry for 24 hours in a temperature environment of 130°C, and then put the dried brick in a high-temperature tunnel kiln and fire it, and the firing temperature is 1500°C. The heat retention time is 7 hours, thereby producing a refractory material for the furnace wall below the colored smelting melting furnace liquid line.

According to the particle size composition and the principle that the front is thicker and the back is thinner, 92 parts of electro-melted chromium corundum and 6 parts of chromium oxide are first dry-mixed in a wet grinder, and after the particles and fine powder are uniformly mixed, 5 parts of a gel binder is added. It is compressed with a pressure of 480 T and molded into bricks, and the resulting bricks are put in a dryer and dried for 24 hours under a temperature environment of 100-150 ℃, and then the dried bricks are put in a high-temperature tunnel kiln and fired. The firing temperature is 1300 ℃ And the heat retention time under the firing temperature condition is 8 hours, thereby producing a refractory material for a colored smelting melting furnace sub-working layer.

According to the particle size composition and the principle that the front is thicker and thinner toward the back, 63 parts of aluminum-chromium eutectic body, 15 parts of aluminum-magnesium spinel and 15 parts of iron-aluminum spinel are first dry mixed in a wet grinder, and the particles and fine powder are uniformly mixed. After mixing, 5.5 parts of a binder is added, and the binder is a mixture of clay, phosphoric acid solution, aluminum dihydrogen phosphate solution and water in a mass ratio of 3:3:3:1, compressed under a pressure of 800 T, and molded into bricks. Put in a dryer, dried for 48 hours under a temperature environment of 200 ℃, and then put the dried brick in a high-temperature tunnel kiln and fired, the firing temperature is 1300 ℃, and the heat retention time under the firing temperature condition is 6 hours, thereby colored smelting Refractory materials for the bottom of the melting furnace furnace are produced.

Example 3

According to the particle size composition and the principle that the front is thicker and thinner toward the back, 94 parts of electro-melted chromium corundum and 7 parts of chromium oxide are first dry mixed in a wet grinder, and after the particles and fine powder are uniformly mixed, 5.5 parts of a binder is added, and the above The binder is a mixture of a white aleuron blend in a mass ratio of 7:3 and water, and is compressed under a pressure of 500 T to form a brick, and the resulting brick is placed in a dryer and dried for 48 hours in an environment at a temperature of 240°C. Thereby, a refractory material for the wall opening of the colored smelting furnace furnace is produced.

According to the particle size composition and the principle that the front is thicker and the back is thinner, 65 parts of chromium corundum, 4 parts of electro-melting chromium oxide, 5 parts of chromium oxide, 18 parts of high chromium ore, 7 parts of brown corundum powder and 4 parts of α-alumina fine powder are used. First, dry mixing in a wet grinder, after the particles and fine powder are uniformly mixed, 6 parts of a binder is added, and the binder is a mixture of a white aleuron blend and water in a 7:3 mass ratio, and is compressed with a pressure of 600 T to make bricks. The bricks are molded with a dryer, and the resulting bricks are put in a dryer and dried for 24 hours under a temperature environment of 140 ℃, and then the dried bricks are put in a high-temperature tunnel kiln and fired. In this way, a refractory material for the upper furnace wall of the colored smelting smelting furnace is produced.

According to the particle size composition and the principle that the front is thicker and the back is thinner, 70 parts of aluminum-chromium eutectic body, 10 parts of aluminum-magnesium spinel and 25 parts of iron-aluminum spinel are first dry mixed in a wet grinder, and the particles and fine powder are uniformly mixed. After mixing, 6 parts of a binder is added, and the binder is a mixture of clay, a phosphoric acid solution, an aluminum dihydrogen phosphate solution and water in a mass ratio of 3:3:3:1, and is compressed under a pressure of 1000 T, and then molded into a brick. Put the bricks in a dryer and dry them for 36 hours in a 230 ℃ temperature environment, and then put the dried bricks in a high-temperature tunnel kiln and fire them, the firing temperature is 1400℃, and the heat retention time under the firing temperature conditions is 8 hours, thereby being colored. A refractory material for the furnace wall above the smelting melting furnace liquid line is produced.

According to the particle size composition and the principle that the front is thicker and thinner toward the back, 54 parts of aluminum-chromium eutectic body, 16 parts of iron-chromium spinel, 5 parts of magnesium-chromium spinel and 26 parts of iron-aluminum spinel are first dry mixed in a wet grinder. After the particles and fine powder are uniformly mixed, 4 parts of a gel binder is added, compressed at a pressure of 1100 T, and molded into a brick, and the resulting brick is put in a dryer, dried for 24 hours in a 100°C temperature environment, and then dried. The brick is put into a high-temperature tunnel kiln and fired, the firing temperature is 1600°C, and the heat retention time under the firing temperature condition is 6 hours, thereby producing a refractory material for the colored smelting smelting furnace liquid line furnace wall and the liquid discharge nozzle area, A refractory material for the furnace wall below the colored smelting melting furnace liquid line is produced.

According to the particle size composition and the principle that the front is thicker and thinner toward the back, 62 parts of aluminum-chromium eutectic body, 18 parts of magnesium-chromium spinel, 12 parts of magnesium-aluminum spinel, α-alumina fine powder and 13 parts of aluminum-magnesium spinel are first wetted. Dry mixing in a pulverizer, after the particles and fine powder are uniformly mixed, 6 parts of a gel binder is added, and the gel binder is prepared by aluminum dihydrogen phosphate and α-alumina fine powder in a 1:1 mass ratio. It is compressed under pressure and molded into bricks, and the resulting bricks are put in a dryer, dried for 24 hours in a 150°C temperature environment, and then the dried bricks are put in a high-temperature tunnel kiln and fired, the firing temperature is 1400°C, and the firing temperature conditions The heat retention time under is 8 hours, thereby producing a refractory material for the furnace wall below the colored smelting melting furnace liquid line.

According to the particle size composition and the principle that the front is thicker and the back is thinner, 94 parts of electro-melted chromium corundum and 7 parts of chromium oxide are first dry mixed in a wet grinder, and after the particles and fine powder are uniformly mixed, 5.5 parts of a gel binder is added. It is compressed with a pressure of 500 T and molded into bricks, and the resulting bricks are put in a dryer, dried for 24 hours in a temperature environment of 100-150 ℃, and then the dried bricks are put in a high-temperature tunnel kiln and fired. The firing temperature is 1300 ℃ And the heat retention time under the firing temperature condition is 8 hours, thereby producing a refractory material for a colored smelting melting furnace sub-working layer.

According to the particle size composition and the principle that the front is thicker and thinner toward the back, 70 parts of aluminum-chromium eutectic body, 25 parts of aluminum-magnesium spinel and 10 parts of iron-aluminum spinel are first dry mixed in a wet grinder, and the particles and fine powder are uniformly mixed. After mixing, 6 parts of a binder was added, and the binder was a mixture of clay in a 3:3:3:1 mass ratio, a phosphoric acid solution, an aluminum dihydrogen phosphate solution, and water, compressed at a pressure of 1000 T, and molded into a brick. Put the bricks in a dryer and dry them for 36 hours in a 230 ℃ temperature environment, and then put the dried bricks in a high-temperature tunnel kiln and fire them, the firing temperature is 1400℃, and the heat retention time under the firing temperature conditions is 8 hours, thereby being colored. Refractory materials for smelting smelting furnace furnace floors are produced.

Example 4

According to the particle size composition and the principle that the front is thicker and thinner toward the back, 95 parts of electro-melted chromium corundum and 8 parts of chromium oxide are first dry mixed in a wet grinder, and after the particles and fine powder are uniformly mixed, 6 parts of a binder is added, and the above The binder is a mixture of a white aleuron blend in a mass ratio of 7:3 and water, and is compressed under a pressure of 630 T to form a brick, and the resulting brick is placed in a dryer and dried for 48 hours in an environment at a temperature of 250°C. Thereby, a refractory material for the wall opening of the colored smelting smelting furnace furnace is produced.

According to the particle size composition and the principle that the front is thicker and thinner toward the back, 70 parts of chromium corundum, 6 parts of electro-melting chromium oxide, 5 parts of chromium oxide, 16 parts of high chromium ore, 7 parts of brown corundum powder and 6 parts of α-alumina fine powder are prepared. First, dry mix in a wet grinder, and after the particles and fine powder are uniformly mixed, 5 parts of a binder is added, and the binder is a mixture of a white aleuron blend and water in a 7:3 mass ratio, and is compressed with a pressure of 630 T, and brick The bricks are molded with a dryer, and the resulting bricks are put in a dryer and dried for 24 hours under a temperature environment of 150 ℃, and then the dried bricks are put in a high-temperature tunnel kiln and fired. The firing temperature is 1350℃, and the heat retention time under the firing temperature conditions is 8 hours. In this way, a refractory material for the upper furnace wall of the colored smelting smelting furnace is produced.

According to the particle size composition and the principle that the front is thicker and thinner toward the back, 67 parts of aluminum-chromium eutectic body, 8 parts of aluminum-magnesium spinel and 22 parts of iron-aluminum spinel are first dry mixed in a wet grinder, and the particles and fine powder are uniformly mixed. After mixing, 5 parts of a binder is added, and the binder is a mixture of clay, phosphoric acid solution, aluminum dihydrogen phosphate solution, and water in a 3:3:3:1 mass ratio, compressed at a pressure of 1000 T, and molded into a brick, and obtained Put the bricks in a dryer and dry them for 36 hours under a 250 ℃ temperature environment, and then put the dried bricks in a high-temperature tunnel kiln and fire them, the firing temperature is 1500℃, and the heat retention time under the firing temperature conditions is 6 hours, thereby being colored. A refractory material for the furnace wall above the smelting melting furnace liquid line is produced.

According to the particle size composition and the principle that the front is thicker and thinner toward the back, 56 parts of aluminum-chromium eutectic body, 13 parts of iron-chromium spinel, 6 parts of magnesium-chromium spinel and 21 parts of iron-aluminum spinel are first dry mixed in a wet grinder. After the particles and fine powder are uniformly mixed, 5 parts of a gel binder is added, compressed under a pressure of 1000 T, and molded into a brick, and the resulting brick is put in a dryer, dried for 24 hours in a 150°C temperature environment, and then dried. The brick is put in a high-temperature tunnel kiln and fired, the firing temperature is 1500°C, and the heat retention time under the firing temperature condition is 8 hours, thereby producing a refractory material for the colored smelting smelting furnace liquid line furnace wall and the liquid discharge nozzle area.

In accordance with the particle size composition and the principle that the front is thicker and the back is thinner, 67 parts of aluminum-chromium eutectic body, 13 parts of magnesium-chromium spinel, 16 parts of magnesium-aluminum spinel, α-alumina fine powder and 9 parts of aluminum-magnesium spinel are first wetted. Dry mixing in a pulverizer, after the particles and fine powder are uniformly mixed, 7 parts of a gel binder are added, and the gel binder is prepared by aluminum dihydrogen phosphate and α-alumina fine powder in a 1:1 mass ratio. Pressurized and molded into bricks, the resulting bricks are put in a dryer, dried for 24 hours in a 150°C temperature environment, and then the dried bricks are put in a high-temperature tunnel kiln and fired, the firing temperature is 1500°C, and the firing temperature conditions The heat retention time under is 8 hours, thereby producing a refractory material for the furnace wall below the colored smelting melting furnace liquid line.

According to the particle size composition and the principle that the front is thicker and thinner toward the back, 95 parts of electro-melted chromium corundum and 8 parts of chromium oxide are first dry mixed in a wet grinder, and after the particles and fine powder are uniformly mixed, 6 parts of a gel binder are added. Compressed with a pressure of 630 T and molded into bricks, the resulting bricks are put in a dryer, dried for 24 hours under a temperature environment of 100-150 ℃, and then the dried bricks are put in a high-temperature tunnel kiln and fired, the firing temperature is 1300 ℃ And the heat retention time under the firing temperature condition is 8 hours, thereby producing a refractory material for a colored smelting melting furnace sub-working layer.

According to the particle size composition and the principle that the front is thicker and the back becomes thinner, 67 parts of aluminum-chromium eutectic body, 22 parts of aluminum-magnesium spinel and 8 parts of iron-aluminum spinel are first dry mixed in a wet grinder, and the particles and fine powder are uniformly mixed. After mixing, 5 parts of a binder is added, and the binder is a mixture of clay in a 3:3:3:1 mass ratio, a phosphoric acid solution, an aluminum dihydrogen phosphate solution, and water, compressed under a pressure of 1000 T, and molded into a brick. Put the bricks in a dryer and dry them for 36 hours under a 250 ℃ temperature environment, and then put the dried bricks in a high-temperature tunnel kiln and fire them, the firing temperature is 1500℃, and the heat retention time under the firing temperature conditions is 6 hours, thereby being colored. Refractory materials for smelting smelting furnace furnace floors are produced.

Table 1 shows the main technical indicators of the refractory materials for each portion of the colored smelting melting furnace of Example 1-4 described above.

Table 1 Physical and chemical indicators of Example 1-4

Parts of the present invention that are not described in detail are prior art.

1: furnace wall opening;
2: upper furnace wall;
3: furnace wall above the liquid line;
4: liquid line furnace wall;
5: furnace wall below the liquid line;
6: sub working layer;
7: liquid discharge nozzle;
8: Furnace floor.

Claims (4)

The furnace interior is sequentially from top to bottom furnace wall opening (1), upper furnace wall (2), liquid line upper furnace wall (3), liquid line furnace wall (4), liquid line lower furnace wall (5), sub A working bed 6, a liquid discharge nozzle 7 and a furnace bottom 8,
Each part of the furnace is made of refractory materials,
The constituent components of the refractory material for the furnace wall opening 1 are electro-melted chromium corundum, chromium oxide and a gel binder,
Constituents of the refractory material for the upper furnace wall 2 are chromium corundum, electro-melting chromium oxide, chromium oxide, high chromium ore, brown corundum powder, α-alumina fine powder, and a binder,
Constituents of the refractory material for the furnace wall 3 above the liquid line are aluminum-chromium eutectic, aluminum-magnesium spinel, iron-aluminum spinel and a binder,
The components of the refractory material for the liquid line furnace wall 4 and the liquid discharge nozzle 7 are aluminum-chromium eutectic, iron-chromium spinel, magnesium-chromium spinel, iron-aluminum spinel and gel binder,
Constituents of the refractory material for the furnace wall 5 below the liquid line are aluminum-chromium eutectic, magnesium-chromium spinel, magnesium-aluminum spinel, α-alumina fine powder, aluminum-magnesium spinel and a gel binder,
Constituent components of the refractory material for the sub working layer 6 are electro-melted chromium corundum, chromium oxide, and a binder,
The components of the refractory material for the furnace floor 8 are aluminum-chromium eutectic, aluminum-magnesium spinel, iron-aluminum spinel, and a binder.
The method of claim 1,
The constituent components of the refractory material for the furnace wall opening 1 are 90-95 parts of electro-melted chromium corundum, 5-8 parts of chromium oxide, and 5-6 parts of a gel binder, depending on parts by weight,
The components of the refractory material for the upper furnace wall 2 are, depending on parts by weight, 60-70 parts of chromium corundum, 4-6 parts of electro-melting chromium oxide, 3-5 parts of chromium oxide, 15-20 parts of high chromium ore , Brown corundum powder 5-8 parts, α-alumina fine powder 4-6 parts, binder 5-6 parts,
Constituents of the refractory material for the furnace wall 3 above the liquid line are, depending on parts by weight, chromium corundum 60-70 parts, electro-melting chromium oxide 4-6 parts, chromium oxide 3-5 parts, high chromium ore 15- 20 parts, brown corundum powder 5-8 parts, α-alumina fine powder 4-6 parts, binder 5-6 parts,
The components of the refractory material for the liquid line furnace wall 4 and the liquid discharge nozzle 7 are, depending on parts by weight, aluminum-chromium eutectic 60-70 parts, aluminum-magnesium spinel 5-15 parts, iron-aluminum 15-25 parts spinel and 5-6 parts binder,
Constituents of the refractory material for the furnace wall 5 below the liquid line, depending on parts by weight, 60-70 parts of aluminum-chromium eutectic body, 10-20 parts of magnesium-chromium spinel, 10-20 parts of magnesium-aluminum spinel, α-alumina fine powder, aluminum-magnesium spinel 5-15 parts and gel binder 5-8 parts,
The constituent components of the refractory material for the sub-working layer 6 are, depending on parts by weight, 90-95 parts of electro-melted chromium corundum, 5-8 parts of chromium oxide and 5-6 parts of the binder,
Constituents of the refractory material for the furnace floor 8 are, depending on parts by weight, aluminum-chromium eutectic 60-70 parts, aluminum-magnesium spinel 15-25 parts, iron-aluminum spinel 5-15 parts and binder 5- High-strength melting furnace for colored reinforced smelting, characterized in that 6 denier
The method of claim 1,
The binder in the refractory material for the furnace wall opening 1 and the upper furnace wall 2 is a mixture of white aleuron blend and water, and the mass ratio of white aleuron blend and water is 7:3,
The binder in the refractory material for the furnace wall 3 and the furnace bottom 8 above the liquid line is a mixture of clay, phosphoric acid solution, aluminum dihydrogen phosphate solution and water, and the mass ratio of clay, phosphoric acid solution, aluminum dihydrogen phosphate solution and water is 3:3:3:1,
The gel binder in the refractory material for the liquid line furnace wall 4, liquid discharge nozzle 7 and sub working layer 6 is prepared by α-alumina fine powder and aluminum dihydrogen phosphate solution, where α-alumina fine The mass ratio of the powder and the aluminum dihydrogen phosphate solution is 3:7-5:5,
The binder in the refractory material for the furnace wall 5 below the liquid line is a gel binder made of aluminum dihydrogen phosphate and α-alumina fine powder in a 1:1 ratio.
The method of claim 1,
In the refractory material for the furnace wall opening 1, the particle size distribution ranges of the electro-melted chromium corundum and chromium oxide are 5-3 mm, 3-1 mm, 1-0.1 mm, 180 mesh or less, and 325 mesh or less,
In the refractory material for the upper furnace wall 2, the particle size distribution range of chromium corundum, electro-melting chromium oxide, chromium oxide, high chromium ore, brown corundum powder, and α-alumina fine powder is 5-3 mm, 3- 1 mm, 1-0.1 mm, 180 mesh or less, 325 mesh or less, and 5 μ or less,
In the refractory material for the furnace wall 3 above the liquid line, the particle size distribution ranges of aluminum-chromium eutectic, aluminum-magnesium spinel and iron-aluminum spinel are 5-3 mm, 3-1 mm, 1-0.1 mm. , 180 mesh or less, 325 mesh or less, and 5 μ or less,
In the refractory material for the liquid line furnace wall 4 and the liquid discharge nozzle 7, the particle size distribution range of aluminum-chromium eutectic, aluminum-magnesium spinel and iron-aluminum spinel is 8-5 mm, 5-3. mm, 3-1 mm, 1-0.1 mm, 180 mesh or less and 325 mesh or less,
In the refractory material for the furnace wall 5 below the liquid line, the particle size distribution range of aluminum-chromium eutectic, magnesium-chromium spinel, magnesium-aluminum spinel, α-alumina fine powder, and aluminum-magnesium spinel is 5-3. mm, 3-1 mm, 1-0.1 mm, 180 mesh or less, 325 mesh or less, and 5 μ or less,
In the refractory material for the sub working layer 6, the particle size distribution ranges of aluminum-chromium eutectic, aluminum-magnesium spinel, and iron-aluminum spinel are 5-3 mm, 3-1 mm, 1-0.1 mm, 180 Mesh or less, 325 mesh or less, and 5 μ or less,
In the refractory material for the furnace floor 8, the particle size distribution range of aluminum-chromium eutectic body, aluminum-magnesium spinel and iron-aluminum spinel is 5-3 mm, 3- 1 mm, 1-0.1 mm, 180 mesh or less. , High-strength melting furnace for colored reinforcement smelting, characterized in that the 325 mesh or less and 5 μ or less.

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