• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The material contains 85 to 97 parts by weight of microspheres, which is a product obtained from power plant dust, and 3 to 15 parts by weight of an organic resin.
    公开号:SU865119A3
    申请号:SU782641005
    申请日:1978-07-26
    公开日:1981-09-15
    发明作者:Пваловски Станислав；Гудра Петр；Сметанко Збигнев；Кравчык Анджей；Сырковски Станислав；Хыцнар Ян；Петрас Збигнев；Кубас Здзислав；Песюр Эугэнюш；Гайда Януш；Польак Ирэна；Нецецки Казимеж
    申请人:Хута Косьцюшко Пшедсембиоратво Паньствове (Инопредприятие)；
    IPC主号:
    专利说明:

    (54) HEAT-INSULATING MIXTURE FOR MANUFACTURE
    The invention relates to ferrous metallurgy, specifically to the composition of heat insulating mixtures used to make plates that are installed in profitable extensions of steel pouring molds with the aim of reducing the heat loss of a liquid metal and reducing the head cut of the molten metal. when casting steel, containing heat-insulating refractory material in the form of filaments or granules, exothermic ingredient, oxidizer, fluoride, colloid silica sol and organic binder fl. However, this mixture is complex in composition, which determines the laboriousness of its preparation and use in production conditions and the increased costs of the materials included in its composition. The closest to the invention according to the technical essence and the achieved result is a heat insulating mixture for the manufacture of plates in profitable extensions of steel-casting molds containing ground ore, for example iron, manganese or xpoMHCTyip, organic fiber
    权利要求:
    Claims (3)
    [1]
    DEPOSITS a substance, a heat insulating refractory material with a grain diameter of 1-3 mm and an organic binder f2. However, the insulating properties of the plates from this mixture need improvement. In addition, this mixture is elevated; raw material costs. The aim of the invention is to improve the heat insulating properties of the mixture for plates used in casting steel into molds. . To achieve this goal, the heat insulating mixture for the manufacture of plates in profitable extensions of steel-casting molds, including heat insulating material and organic linkage, contains hollow microspheres as a heat insulating material — a product of gravitational separation of volatile sols of thermal power plants with a content of 40-60 wt.% Silicon dioxide, and as an organic binder, a synthetic resin in the following ratio of ingredients, wt.%: Hollow microspheres 85-97 Organic binder -15 Hollow microns spheres have an outer diameter of 20-350 microns and 1-35 microns thick membrane as a synthetic resin mixture comprises a resin selected from the following series: phenol-formaldehyde, melamine-formaldehyde, urea frrmaldegidna. Hollow microspheres have the following complex of properties: Silicon dioxide content, wt.% 40-60 Bulk density, kg / m 300-400 Thermal conductivity coefficient in the state of free backfilling at, W / mK0.07 When the content of hollow microspheres in the composition of the heat-insulating mixture below the lower conditional limit, the heat insulating properties of the plates deteriorate, and when they are contained above the upper limit, the physicomechanical and operational properties of the plates deteriorate due to a simultaneous decrease in the binder content. The mixture is prepared by thoroughly mechanically mixing a filler (hollow microspheres) with a binder. Plates of the desired size are molded from the finished mixture using known methods. The molded products are cured by heat drying or at room temperature. In the latter case, the mixture additionally contains an acid hardener (for example, orthophosphoric acid or aluminum acid phosphate in amounts of 20-60% by weight of the resin. Introduction of acid hardeners (especially phosphate aluminum) is also advisable in the case of heat curing of the plates, as this shortens the drying time and increases the strength of the products.The consumption of the acidic hardener in the case of the thermal curing option is neither preferable but it is 10 times the weight of the resin. The urea-formaldehyde resin is advisable to use when the microspheres are wet, and the phenol-formaldehyde resin when microspheres are dry. Melamine-formaldehyde resin can be used for both wet and long dry microspheres The proposed thermal insulation mixture can have the following composition,% by weight: Hollow microspheres 55 Silicon dioxide 94 Feiolform bottom resin resin6 For cold curing, 60% additional resin is added to the mixture for cold curing. Isols with a concentration of 40-74%. The duration of the cold cured molded plate is from one to several hours. The same mixture or mixture in which the feiol formaldehyde resin is replaced with an equivalent amount of melamine formaldehyde resin may additionally contain 10–40% (by weight of the resin) acidic monosubstituted aluminum or chromium phosphate, or aluminum chlorophosphate. The curing of this mixture occurs at a short time sufficient for through heating of the plate di given temperature. The same mixture may contain, instead of a phenol-formaldehyde resin, an equivalent amount of a urea-formaldehyde resin without the additional addition of acidic hardeners. The curing of such a mixture takes place within 1 hour. It is advisable to protect the heat insulating plate made of the proposed mixture from the side in contact with liquid steel, a refractory coating or a refractory layer, additionally applied in the process of forming the plate, for example, based on aluminosilicate ( chamotte or other known refractories. This allows you to maintain the high thermal insulation properties of the plate during its operation. The refractory layer may also contain an exothermic substance, which can be further improved The thermal conductivity of the main heat insulating layer of the slab of the proposed mixture is in the range of 20-1000 ° C from 0.12 to 0.18 W / mK, which is 2-3 times lower than that of the known mixture. This makes it possible to achieve more efficient metal insulation in the mold and, accordingly, to reduce the percentage of the head trimming of ingots. The use of hollow microspheres obtained from the volatile ashes of the heat and power plant also makes it possible to solve the problem of the widespread utilization of industrial waste. Claim 1. Thermal insulation mixture for the manufacture of plates in profitable extensions of steel-casting molds, including thermal insulation material and an organic binder, which means that, in order to improve thermal insulation properties, it contains hollow microspheres as a thermal insulation material. - a product of gravitational separation of volatile ashes of thermal power plants with a content of 40-60 wt.% silicon dioxide, and as an organic binder - a synthetic resin in the following ratio of ingredients, .%:
    Hollow Microspheres 85-97 Synthetic Resin 3-15
    [2]
    2, Mixture popl, characterized by the fact that the hollow microspheres have an outer diameter of 20-350 microns and a shell thickness of 1-35 microns.
    [3]
    3. A mixture according to claim 1, so that it contains resin as a synthetic resin.
    selected from the next row; phenol-formaldehyde, melamine-formaldehyde dna, to ar b am do - formal d d d a,
    Sources of information taken into account in the examination
    1. US Patent 4,008,109, cl. 149-37, published 1977.
    2. The patent of Germany No. 2007196, cl. At 22 7/10, published. 1972.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU865119A3|1981-09-15|Heat-insulating mixture for making slabs
    US2869196A|1959-01-20|Refractory composition containing slag, sand, magnesium oxide, and aqueous phenolic resin, method of making and product obtained
    US3933513A|1976-01-20|Refractory heat insulating materials
    US5362690A|1994-11-08|Refractory castable composition and process for its manufacture
    US4048134A|1977-09-13|Refractory heat-insulating materials
    US3992213A|1976-11-16|Heterogeneous refractory compounds
    US3297296A|1967-01-10|Hot top composition for casting molds
    US4575439A|1986-03-11|Method of producing a refractory brick
    US4008109A|1977-02-15|Shaped heat insulating articles
    US4201606A|1980-05-06|Refractory exothermic heating insulating articles
    US4240496A|1980-12-23|Heat-insulating articles
    EP0140900B1|1988-05-11|Process for thermal insulation of the surface of a molten mass of steel
    US4750717A|1988-06-14|Tundishes
    DE2532745C2|1985-09-26|Heat-insulating lining for feeders
    US4988649A|1991-01-29|Silica bricks and process for production thereof
    US4430125A|1984-02-07|Process of manufacture of a composite material and composite material manufactured by this process
    US4422496A|1983-12-27|Process for preparing olivine sand cores and molds
    KR840000102B1|1984-02-11|Process for preparing heat-insulating articles
    SU749564A1|1980-07-23|Heat-insulating mixture for warming casting heads
    SU565774A1|1977-07-25|Heat-insulation mixture for risers of steel castings
    SU1689349A1|1991-11-07|Raw mixture for producing refractories withstanding molten aluminium and its alloys
    SU1335552A1|1987-09-07|Method of producing periclase carbon refractory
    SU759212A1|1980-08-30|Mixture for producing heat-insulating inserts
    US4396725A|1983-08-02|Process for preparing olivine sand cores and molds
    JPH0557402A|1993-03-09|Heat insulating material for low melting point metal horizontal continuous casting device
    同族专利:
    公开号 | 公开日
    IT7826251D0|1978-07-28|
    GB2001658B|1982-04-07|
    FR2398563A1|1979-02-23|
    ES472177A1|1979-10-01|
    BE869329A|1978-11-16|
    LU80054A1|1978-12-12|
    DE2833004A1|1979-02-15|
    SE7808180L|1979-01-29|
    IT1097797B|1985-08-31|
    GB2001658A|1979-02-07|
    DD137541A5|1979-09-12|
    CS203198B2|1981-02-27|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    BE494843A|
    FR1385669A|1963-12-17|1965-01-15|Sandvikens Jernverk Aktiebolag|Heat-insulating compositions for casting metals and their method of use|
    DE1783045A1|1968-09-24|1971-02-11|Keramicke Zd Y N P|Mold to reduce metal heat losses|
    GB1301922A|1969-02-18|1973-01-04|
    GB1311881A|1969-03-29|1973-03-28|Resil Processes Ltd|Heat insulating material for moulding purposes|
    FR2213822B3|1973-01-15|1976-01-16|Seprom Thermonite Sa Fr|
    GB1448320A|1974-03-04|1976-09-02|Univ Washington|Lightweight inorganic material|
    GB1480589A|1974-09-03|1977-07-20|Foseco Int|Refractory heat-insulating materials|
    GB1464720A|1974-12-03|1977-02-16|DE3414153A1|1984-04-14|1985-10-17|Dynamit Nobel Ag, 5210 Troisdorf|Process for the production of refractory bricks or other shaped articles|
    GB9308363D0|1993-04-22|1993-06-09|Foseco Int|Refractory compositions for use in the casting of metals|
    US6133340A|1996-03-25|2000-10-17|Ashland Inc.|Sleeves, their preparation, and use|
    BR9601454C1|1996-03-25|2000-01-18|Paulo Roberto Menon|Process for the production of exothermic and insulating gloves.|
    ES2134729B1|1996-07-18|2000-05-16|Kemen Recupac Sa|IMPROVEMENTS INTRODUCED IN OBJECT APPLICATION FOR A SPANISH INVENTION PATENT N. 9601607 FOR "PROCEDURE FOR THE MANUFACTURE OF EXACT SLEEVES AND OTHER ELEMENTS OF MAZAROTAJE AND FEEDING FOR CAST MOLDS.|
    ES2114500B1|1996-07-18|1999-04-01|Kemen Recupac Sa|PROCEDURE FOR THE MANUFACTURE OF EXACT SLEEVES AND OTHER ELEMENTS OF MAZAROTAJE AND FEEDING FOR CAST MOLDS, INCLUDING THE FORMULATION FOR THE OBTAINING OF SUCH SLEEVES AND ELEMENTS.|
    US5983984A|1998-01-12|1999-11-16|Ashland Inc.|Insulating sleeve compositions and their uses|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    PL19995077|1977-07-28|
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