共查询到19条相似文献,搜索用时 125 毫秒
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据悉,常州涂料化工研究院与上海氧化铁颜料厂合作开发了利用硫酸法钛白粉副产硫酸亚铁湿法生产氧化铁系颜料工艺。该工艺将副产硫酸亚铁溶解净化制成亚铁溶液,再经碱中和与空气氧化,在溶液中合成氧化铁颜料,同时副产硫酸铵。改变工艺条件可生产不同色相的氧化铁红,平均生产1t氧化铁可处理废硫酸亚铁3.5—4t,与国外干法工艺相比,该湿法工艺投资小,易实现品种系列化。 相似文献
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国外合成氧化铁颜料的发展概况 总被引:1,自引:0,他引:1
氧化铁系颜料是无机彩色颜料中最重要的一类,具有耐光、耐久、遮盖力高以及价格低廉等优点。1978年世界合成氧化铁产量为46.5万吨,占世界无机颜料总产量的15%,列于钛白之后,居无机颜料产量的第二位。氧化铁颜料分天然氧化铁和合成氧化铁两种。合成氧化铁可以按人们的需要逐步控制产品的纯度、粒度和色相等化学及物理性能,因此它渐渐排挤了只能作为低档产品的天然氧化铁。自从国外能源危机日趋尖锐以 相似文献
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毛麒瑞 《精细与专用化学品》1997,(11)
东南亚地区规模最大的高档合成氧化铁颜料生产企业—拜耳上海颜料有限公司已建成投产。该公司引进拜耳公司的先进工艺,建成年产高档合成氧化铁颜料2万吨装置(为国内第一家)。这种颜料色泽鲜艳、稳定性好,可用于生产高档油漆、彩色混凝土制品,是建材升级换代、调整产品结构的一种新型颜料。高档合成氧化铁颜料投产@毛麒瑞 相似文献
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一经常超标排放的铁黄废水处理设施,藉节污减排、技术改进之助,使废水在pH值7—8、曝气1h等最佳运行条件下得到完全处理。分离出的铁黄颜料及铁泥被回收利用,清液达到‘三废’排放标准,部分当作中水予以回用。此举不仅彻底消除了氧化铁黄颜料生产行业中常见的次生污染,保护了环境,而且取得可喜经济效益。 相似文献
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P. Kresse 《European Journal of Lipid Science and Technology》1969,71(6):488-492
Deposition of Iron Oxide Pigments at the Edge of Containers Various mechanisms involved in the deposition of red iron oxide pigments on the sides of containers were investigated. It is confirmed that being sometimes insufficiently wetted in polyester systems, red iron oxide gets deposited at the surface of coatings, especially when the latter are subjected to contact with air. Thus during filling or during the addition of silicone oils the red iron oxide is deposited at the edge of containers. This deposition of pigment could be prevented by the addition of wetting agents. It is possible that the above phenomenon occurs as well in other binders with poor wetting properties. 相似文献
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介绍了一种云母氧化铁颜料薄片状粒子含量评定的方法,选择了若干个样品分别用透射光学显微镜和电子显微镜进行了测定,并对结果进行了分析,对生产企业和用户评定云母氧化铁颜料产品质量具一定指导意义。 相似文献
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Concrete interlocking blocks (CIBs) are utilized in a variety of commercial, municipal, and industrial applications. Superior engineering properties, low maintenance, ease of placement and removal, reuse of original blocks, aesthetic appeal, and immediate availability are the primary reasons for choosing concrete block pavement over other paving surfaces. It is a common practice to pigment building materials, such as mortar, concrete pavers, concrete roof tiles, and prefabricated concrete products; CIBs are colored using iron oxide pigments. This article presents experimental results detailing the properties of CIBs dyed with pigments. The results of these experiments are as follows: Because the particles of iron oxide pigments are finer than those of brown iron oxide, interlocking blocks mixed with the former acquired higher color strength than with the latter. Additional analysis determined a definite relationship between the flexural strength and the absorption ratio of pigment-dyed blocks; the correlation coefficient (R2) of interlocking blocks at 91 days was .90. It is suggested that if iron oxide pigments are to be used to color CIBs, the pigment-to-cement ratio should be below 4%. 相似文献
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新型环氧防腐涂料的研究 总被引:1,自引:0,他引:1
采用在环氧树脂中加入纳米复合铁钛粉防锈颜料WD—D-325、固化剂、制备了新型环氧树脂防腐涂料。由于纳米技术的特性,该防腐涂料具有较高的防腐性、优异的附着力和柔韧性。实验确定了复合铁钛粉防锈颜料在环氧防腐涂料中的添加量。作为新型的环保颜料,复合铁钛粉防锈颜料可以替代红丹、锌铬黄等颜料。 相似文献