共查询到18条相似文献,搜索用时 5 毫秒
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氢氧化铝是一种重要的无机阻燃剂,其应用领域和使用量不断扩大.国内利用烧结法精液有机物含量低的优势,大力发展氢氧化铝阻燃填料产业,产品质量和技术水平有了很大的提高.但与国外先进水平相比,仍存在较大差距.本文对国际知名氢氧化铝阻燃剂企业的产品进行了简要介绍,并通过对比国内外氢氧化铝阻燃剂产品现状,找出国内外产品间的差距,并对国内氢氧化铝阻燃剂提出了发展方向及建议. 相似文献
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建立了以精制亚麻油和DOP测定高白氢氧化铝填料吸油量的方法。选择粗、中、细三种样品,对影响测量的温度、搅拌方法、搅拌时间等因素进行了试验研究,同时用亚麻油、蓖麻油和邻苯二甲酸二辛脂在相同条件下进行了对比测量。通过对国外产品进行测量,验证了测量结果与国际著名公司测量结果的一致性。 相似文献
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3月28日,中州分公司种分高白氢氧化铝填料生产线扩建项目一次投料试车成功。该项目投产后.将充分发挥分公司现有的生产潜力,进一步降低生产成本,不断提高分公司抵御市场风险的能力。 相似文献
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高白度氢氧化铝中疵点的来源及控制方法 总被引:1,自引:0,他引:1
通过分析疵点对高白度氢氧化铝质量的影响 ,查清了氢氧化铝中疵点的主要来源 ,找到了生产中有效控制高白度氢氧化铝中的疵点的方法 ,通过采取措施成功地生产出各项指标合格的高白度氢氧化铝。 相似文献
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目前中铝各分公司基本都用酸碱中和滴定法分析氢氧化铝中的可容钠,酸碱滴定容易引起终点误差.本文重点研究了用火焰光度法测定氢氧化铝中可容钠的含量. 相似文献
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根据影响氢氧化铝粒度大小的因素,得到筛上物主要来自原料中的杂质以及分解过程产生的大颗粒的结论。对超细氢氧化铝的生产条件进行了详细分析,通过降低自分解影响、保证种子浆活性、保证分解最佳温度以及清洗分解槽等一系列措施来减少超细氢氧化铝筛上物的形成。 相似文献
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W. D. Münz 《工业材料与腐蚀》1972,23(2):101-105
Investigations on the morphology of aluminium hydroxides and anodic aluminium oxide films using scanning electron microscope Hydroxide films of spongy structure are originated on aluminium surfaces if aluminium is trated with hot water for short periods. By increasing the reaction time the hydroxide layers start to become more compact until films are growing coherent showing a porous surface. If the reaction time exceeds 4 hours at a reaction temperature of 98°C crystalline scales appear on the top of the films. During the anodic oxydation of hydroxide coated aluminium in citric acid solutions, thin hydroxide films transform into barrier layer type oxides. If the anodization occurs in aggressive electrolytes the existing hydroxide dissolves and oxide layers with porous structure are obtained. Oxide layers produced by anodizing in hot citric acid solutions in the absence of a hydroxide film show a current density dependent morphology. At higher current densities barrier layer type oxides are growing. Using low current densities oxide layers with a character are predominating. 相似文献
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吸油率是检测氢氧化铝粉料质量的重要指标之一。微粉氢氧化铝产品中附聚体大颗粒的存在,影响产品的粒度分布和吸油率值。本文通过对微粉氢氧化铝进行加压和强化打散,以减少粉料中附聚体的数量,改善粒度分布,降低吸油率。 相似文献
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LIU Miaoxiu CHENG Zhaonian CHEN Nianyi Shanghai Institute of Metallurgy Academia Sinica Shanghai ChinaKE Jiajun Institute of Chemical Metallurgy Academia Sinica Beijing China 《金属学报(英文版)》1991,4(8):153-156
The regularity of the carbonization process in alumina production has been summarized by thepattern recognition and regression.A mathematical model has been proposed to describe thefactors affecting the silica content of aluminium hydroxide product.The high concentration ofaluminate ions in solution will produce aluminium hydroxide with low content of SiO_2 underthe condition of Al_2O_3/SiO_2 ratio kept unchanged.This was confirmed by certain scaleexperiments. 相似文献
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LIU Miaoxiu CHENG Zhaonian CHEN Nianyi Shanghai Institute of Metallurgy Academia Sinica Shanghai ChinaKE Jiajun Institute of Chemical Metallurgy Academia Sinica Beijing China CHEN Nianyi Professor Shanghai Institute of Metallurgy Academia Sinica Shanghai China 《金属学报(英文版)》1990,3(8):153-156
The regularity of the carbonization process in alumina production has been summarized by thepattern recognition and regression.A mathematical model has been proposed to describe thefactors affecting the silica content of aluminium hydroxide product.The high concentration ofaluminate ions in solution will produce aluminium hydroxide with low content of SiO_2 underthe condition of Al_2O_3/SiO_2 ratio kept unchanged.This was confirmed by certain scaleexperiments. 相似文献
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The effects of some organic compounds namely formamide, pyridine, gramine, dipyridyl, piperidine, benzoyl piperidine and dibenzyl disulphide on the corrosion of 2S aluminium in 1M sodium hydroxide and 1M hydrochloric acid have been investigated. All the compounds are not effective as inhibitors by themselves in sodium hydroxide solution but their conjoint action with calcium enhances their inhibition efficiency to a great extent. In 1M hydrochloric acid their inhibition efficiency is high and calcium, contrary to its behaviour in sodium hydroxide, does not possess any beneficial effect on the influence of these compounds. The polarization behaviour of aluminium in the acidic and the alkaline solutions in the presence of these compounds is discussed. 相似文献