摘要:
A process for preparing red ceramic molded bodies by rapid firing is disclosed, wherein low Si-content iron oxides are employed. The process produces molded bodies having improved colouristic properties.
摘要:
A black manganese/iron oxide pigment having a spinel structure and having the composition Mn.sub.x Fe.sub.3-x O.sub.4 wherein x has a value from 0.1 to 0.9, is prepared by the steps:a) oxidizing iron(II) salts or mixtures of iron(II) salts and manganese(II) salts, in solution or after reaction with alkaline precipitants, with manganese dioxide or other compounds containing manganese in high valency,b) additionally oxidizing the salts of (a) to establish an Fe(III) content therein with another oxidizing agent, andc) filtering, washing, drying and grinding the pigment;and the pigment is useful for pigmenting building materials to a black color.
摘要:
Pigments having the color of natural uncalcined umber contain more than 85% by weight of iron oxides, expressed as Fe.sub.2 O.sub.3, and less than 0.1% by weight of crystalline silica are obtained by mixing iron oxides of spinel structure and/or hematite structure with or without iron oxide yellow and said pigments are useful in coloring paints, lacquers and building materials.
摘要翻译:具有天然未煅烧镉颜色的颜料含有超过85重量%的铁氧化物,以Fe 2 O 3表示,并且小于0.1重量%的结晶二氧化硅通过混合尖晶石结构和/或赤铁矿结构的氧化铁与/或 氧化铁黄和所述颜料可用于着色油漆,漆和建筑材料。
摘要:
A temperature-resistant black pigment which is a mixed oxide of manganese and iron with the structure of hematite and having a manganese content of 3 to 35% by weight, and with absolute color values in colorimetric testing in paint systems, expressed in CIELAB units, in the lightened form (Blend of 10 parts titaniumdioxide and 1 part of black pigment) of 60 to 70 for L*, -0.5 to 1.9 for a* and -4 to -6.5 for b* useful for coloring autoclave-cured building materials and for pigmenting heat-resistant paint systems is obtained by preparing a precursor material of manganese and iron oxides or hydroxides, which contains the phase with the structure of spinel and calcining that precursor material in an oxidizing atmosphere at 500.degree. to 1,000.degree. C.
摘要:
A black manganese/iron oxide pigment having a spinel structure and having the composition Mn.sub.x Fe.sub.3-x O.sub.4 wherein x has a value from 0.1 to 0.9, is prepared by the steps:a) oxidizing iron(II) salts or mixtures of iron(II) salts and manganese(II) salts, in solution or after reaction with alkaline precipitants, with manganese dioxide or other compounds containing manganese in high valency,b) additionally oxidizing the salts of (a) to establish an Fe(III) content therein with another oxidizing agent, andc) filtering, washing, drying and grinding the pigment;and the pigment is useful for pigmenting building materials to a black color.
摘要翻译:具有尖晶石结构并具有组成Mn x Fe 3-x O 4的黑色锰/氧化铁颜料,其中x为0.1-0.9,其值为:a)氧化铁(II)盐或铁(II)盐的混合物 和锰(II)盐,与碱性沉淀剂反应后,与二氧化锰或其它含有高价锰的化合物,b)另外氧化(a)以形成其中的Fe(III)含量的盐,另外氧化 试剂,和c)过滤,洗涤,干燥和研磨颜料; 并且颜料可用于将建筑材料着色成黑色。
摘要:
Spinel black pigments are prepared by annealing oxides, hydroxides or carbonates of copper, chromium and manganese and grinding the product. The manganese-yielding component is Mn.sub.3 O.sub.4.
摘要翻译:尖晶石黑色颜料是通过退火铜,铬和锰的氧化物,氢氧化物或碳酸盐并研磨该产品制备的。 产锰组分是Mn 3 O 4。
摘要:
The invention relates to a process for jet grinding inorganic pigments comprising the steps of compacting the inorganic pigments on a roller compactor at a predetermined linear force, and jet grinding the compacted inorganic pigments.