摘要:
The present invention relates to a white calcium aluminate cement containing at least 90% by weight of monocalcium aluminate, an A/C value in the range of 1.75 to 2.0, a fineness according to Blaine in the range of 3500 to 6000 cm2/g, a slope n in the range of 1.1 to 1.5 and a location parameter x′ of 8-20 μm in an RRSB particle size grid according to DIN 66145 as well as its use in formulations of the construction chemical industry and the refractory industry.
摘要:
A composition for applying to a honeycomb body includes a refractory filler, an organic binder, an inorganic binder, and a liquid vehicle, wherein the refractory filler, the particle size distribution of the refractory filler, the organic binder, and the inorganic binder are selected such that, when the composition is applied to plug a plurality of channels of the honeycomb body, the plug depth variability is reduced.
摘要:
The present invention relates to a current composition for cementing oil or gas wells. The composition comprises calcium aluminate cement in which the proportion of HC203 is at least 50% by weight, dispersant, microsilica, mineral particles, water and optionally a retarder.
摘要翻译:本发明涉及用于固井油气井的当前组合物。 该组合物包含其中HC 2 O 3的比例为至少50重量%,分散剂,微硅粉,矿物颗粒,水和任选的缓凝剂的铝酸钙水泥。
摘要:
The present invention provides for a refractory aggregate composition comprising an improved calcium aluminate clinker having the formula CnAx wherein C is calcium oxide and A is aluminum oxide, wherein n is an integer from about 1 to about 12, wherein x is an integer from about 1 to about 24, and wherein said clinker has from zero to less than about fifty weight percent C12A7, and including a source of barium that is substituted for calcium in said calcium aluminate clinker. Analogs, derivatives and hydrates of the improved calcium aluminate clinker are provided. A refractory composition and a sprayable refractory composition are disclosed comprising the improved calcium aluminate clinker. A method for improving the insulating character and/or penetration resistance of a liner in contact with molten aluminum in an aluminum manufacturing process or during aluminum transport is provided.
摘要翻译:本发明提供了一种耐火骨料组合物,其包含具有式CnAx的改进的铝酸钙熟料,其中C是氧化钙,A是氧化铝,其中n是约1至约12的整数,其中x是约1的整数 至约24,并且其中所述熟料具有0至小于约50重量%的C 12 A 7,并且包括在所述铝酸钙熟料中代替钙的钡源。 提供了改进的铝酸钙熟料的类似物,衍生物和水合物。 公开了耐火组合物和可喷涂的耐火材料组合物,其包含改进的铝酸钙熟料。 提供了一种用于在铝制造过程中或铝运输期间改善与熔融铝接触的衬套的绝缘特性和/或耐穿透性的方法。
摘要:
The present invention provides for a refractory aggregate composition comprising an improved calcium aluminate clinker having the formula CnAx wherein C is calcium oxide and A is aluminum oxide, wherein n is an integer from about 1 to about 12, wherein x is an integer from about 1 to about 24, and wherein said clinker has from zero to less than about fifty weight percent C12A7, and including a source of barium that is substituted for calcium in said calcium aluminate clinker. Analogs, derivatives and hydrates of the improved calcium aluminate clinker are provided. A refractory composition and a sprayable refractory composition are disclosed comprising the improved calcium aluminate clinker. A method for improving the insulating character and/or penetration resistance of a liner in contact with molten aluminum in an aluminum manufacturing process or during aluminum transport is provided.
摘要翻译:本发明提供了一种耐火骨料组合物,其包含具有式CnAx的改进的铝酸钙熟料,其中C是氧化钙,A是氧化铝,其中n是约1至约12的整数,其中x是约1的整数 至约24,并且其中所述熟料具有0至小于约50重量%的C 12 A 7,并且包括在所述铝酸钙熟料中代替钙的钡源。 提供了改进的铝酸钙熟料的类似物,衍生物和水合物。 公开了耐火组合物和可喷涂的耐火材料组合物,其包含改进的铝酸钙熟料。 提供了一种用于在铝制造过程中或铝运输期间改善与熔融铝接触的衬套的绝缘特性和/或耐穿透性的方法。
摘要:
A powder including, in percentages by weight: (a) 94% to 99% of particles of at least one refractory material, the main constituent(s) of which are alumina and/or zirconia and/or silica; (b) 1% to 6% of a hydraulic cement; (c) 0 to 0.03% of organic fibres; (d) optionally, 0.075% to 1% of a surfactant; and (e) optionally, a setting accelerator, where the fraction of particles having a size below 40 μm being distributed, in percentages by weight relative to the weight of the powder, in the following manner: (1) fraction
摘要:
The present invention provides for a refractory aggregate composition comprising an improved calcium aluminate clinker having the formula CnAx wherein C is calcium oxide and A is aluminum oxide, wherein n is an integer from about 1 to about 12, wherein x is an integer from about 1 to about 24, and wherein said clinker has from zero to less than about fifty weight percent C12A7. Analogs, derivatives and hydrates of the improved calcium aluminate clinker are provided. A refractory composition and a sprayable refractory composition are disclosed comprising the improved calcium aluminate clinker. A method for improving the insulating character and/or penetration resistance of a liner in contact with molten aluminum in an aluminum manufacturing process or during aluminum transport is provided.
摘要翻译:本发明提供了一种耐火骨料组合物,其包含具有式CnAx的改进的铝酸钙熟料,其中C是氧化钙,A是氧化铝,其中n是约1至约12的整数,其中x是约1的整数 至约24,并且其中所述熟料具有从零至小于约50重量%的C 12 A 7。 提供了改进的铝酸钙熟料的类似物,衍生物和水合物。 公开了耐火组合物和可喷涂的耐火材料组合物,其包含改进的铝酸钙熟料。 提供了一种用于在铝制造过程中或铝运输期间改善与熔融铝接触的衬套的绝缘特性和/或耐穿透性的方法。
摘要:
The invention relates to the use of a betaine as a foam drainage reducing agent. The invention also relates to the use of betaine in processes involving foam.
摘要:
The refractory mortar cured material of the invention formed in the surface or joint portions of a ceramic refractory material such as fire bricks used in the lining of melting furnace or firing furnace used at high temperature is composed by kneading ceramic particles with an inorganic binder having silanol group together with water, and forming the kneaded mortar on the surface of a ceramic base material. The average particle size of ceramic particles in the refractory mortar is 10 to 50 μm, the difference of 90% particle size and 10% particle size is 10 μm or more to 60 μm or less, the average pore size of the refractory mortar cured material is 5 to 25 μm, and the width of pore size distribution is 20 to 80 μm, so that the cracks may be suppressed. More preferably, the bulk density is 0.9 to 1.5 g/cm3.
摘要翻译:形成于陶瓷耐火材料的表面或接合部分的本发明的耐火灰浆固化材料是通过将陶瓷颗粒与具有硅烷醇的无机粘合剂混合而构成的。 与水一起组合,并在陶瓷基材的表面上形成捏合的砂浆。 耐火砂浆中的陶瓷粒子的平均粒径为10〜50μm,粒径90%,粒径为10%的粒子的平均粒径为10μm〜60μm,耐火灰浆固化物的平均孔径 为5〜25μm,孔径分布的宽度为20〜80μm,可以抑制裂纹。 更优选地,堆积密度为0.9〜1.5g / cm 3。
摘要:
A carbon foam material with an improved oxidation resistance is created by blending formaldehyde with phenol to form a reactive mixture, polymerizing the reactive mixture with a non-oxidation promoting basic catalyst to form a resin article, foaming the resin article to create phenolic foam, and carbonizing the phenolic foam to create the carbon foam with an increased oxidation resistance. Specifically, the oxidation resistant carbon foam has a sodium content of approximately 0%. This inventive foam may also contain one or more oxidization inhibitors to impede the oxidation of the carbon foam when the foam is exposed to an oxidizing environment.