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《精细化工原料及中间体》2007,(10):43-44
淄博广通化工有限公司以生产氧化锆、氧氯化锆为主要产品。由于当前市场对氧氯化锆产品需求量增大,公司于今年年初投产的8000吨氧氯化锆生产线现已不能满足当前的市场需求,公司为了可以 相似文献
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《精细化工原料及中间体》2016,(10)
正受片碱价格大幅上涨的影响,氧氯化锆价格也在持续走高。升华拜克决定将氧氯化锆价格上调至9000元/吨,较节前涨幅接近10%。片碱价格、锆英砂价格及综合成本的上涨,是氧氯化锆厂家决定提价的主要原因。氧氯化锆是生产其他锆制品如二氧化锆、碳酸锆、硫酸锆、复合氧化锆以及锆铪分离制备金属锆铪的主要原料,也可以用于纺织、皮革、橡胶添加剂、金属表面处理剂、耐火材料、陶瓷等产品。上市公司中目前涉及氧氯化锆产销的主要有升华拜克和东方锆业。 相似文献
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《江苏陶瓷》2003,36(4):42-42
该技术涉及一种纳米陶瓷材料的制备工艺。该方法是以氧氯化锆(ZrOCl2·8H2O)、草酸(H2C2O4·2H2O)为原料,在室温下分别配制氧氯化锆(ZrOCl2)与草酸的水溶液,并在不断搅拌氧氯化锆溶液的情况下,将草酸水溶液慢慢加入到氧氯化锆溶液中,然后继续不断地搅拌,得到锆溶胶;然后将多孔氧化铝膜浸入到所得的锆溶胶中,待10min后,在压力为1.3MPa情况下加压5h;将经处理过的膜从溶胶中取出,在红外灯下烘干,再在500℃、氩气氛下常压焙烧5h,即得到氧化锆纳米线阵列。该方法工艺简单,原料易得,可合成出直径为50~300nm,长度大于10μm的氧化锆纳米线。… 相似文献
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利用透射电子显微镜研究了在一密闭容器内恒沸条件下氧氯化锆溶液中所形成的产物的聚合长大过程。结果发现:在不同浓度的氧氯化锆溶液中于恒沸过程先形成微细的子晶核,子晶核再通过聚合作用长大成具有一定大小、一定形状的单斜氧化锆颗粒。尿素的添加对产物的聚合长大过程起了促进作用。 相似文献
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PREPARATION OF ZrO_(2(n)) - A1_2O_3 CERAMIC NANOCOMPOSITE BY MIXING SOL WITH AQUEOUS SUSPENSIONS 下载免费PDF全文
采用微波加热水解氧氯化锆及醇水混合液体,制得ZrO_2前驱物——纳米水合氧化锆溶胶。讨论了反应液体中氧氯化锆浓度和醇/水比对生成物平均粒度及其分布的影响;得出了采用聚甲基丙烯酸铵作为电空间稳定剂的亚微米级氧化铝水悬浮液的稳定条件;阐述了溶胶-悬浮液混合制备复合陶瓷的工艺过程。 相似文献
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以硅酸乙酯和氧氯化锆为先驱体,制备了ZrO2/SiO2复合溶胶,重点考察了ZrO2的摩尔含量、添加剂DMF和TEABr、陈化温度对ZrO2/SiO2复合溶胶稳定性的影响。结果表明:氧氯化锆的存在不利于ZrO2/SiO2复合溶胶的稳定,且随着氧氯化锆摩尔百分含量的增加,溶胶易于凝胶;随着陈化温度的升高,凝胶时间变短;DMF能明显延长ZrO2/SiO2复合溶胶的凝胶时间;当0.4〈n(TEABr)/n(TEOS)〈1时,TEABr能提高溶胶的稳定性。 相似文献
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HE Zhiyong LI Lin PENG Xiaoyan 《中国耐火材料》2005,14(4):26-28
1 IntroductionThe microwave is a kind of high-frequency elec-tromagnetic wave, its wave-length is l ~1000mm, thefrequency scope is 0·3 ~300GHz. But in microwavesintering technology the required frequency is mainly2.45 GHz, though there were reports on 28GHz and60GHz.The microwave sintering is to make use of the mi-crowave energy to heat whole materials to sinteringtemperature and realize densifying.The microwave sintering and normal sintering havethe basic difference in principle. In norm… 相似文献
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本文阐述了抑汗剂活性成分甘氨酸铝锆的生产工艺,对其生产工艺影响因素如反应温度、原料配比、pH值等进行了探讨,并对此产品的主要成分进行了分析,结果表明当甘氨酸铝锆产品中铝与锆的物质的量比为3.5∶1时,甘氨酸铝锆抑汗效果很好. 相似文献
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介绍了球磨超细硅酸锆湿法生产线的工艺流程、主要设备技术性能以及工艺特点.生产实践证明,该生产线工艺设计合理、设备性能优良、生产成本低,生产的超细硅酸锆达到了国内高档陶瓷釉料乳浊剂所要求的质量品级. 相似文献
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Kinetics of Formation of a Platelet-Reinforced Ceramic Composite Prepared by the Directed Reaction of Zirconium with Boron Carbide 总被引:2,自引:0,他引:2
William B. Johnson Alan S. Nagelberg Else Breval 《Journal of the American Ceramic Society》1991,74(9):2093-2101
The kinetics of formation of a new class of ceramic composite material, zirconium diboride platelet-reinforced zirconium carbides, are discussed. These materials are prepared by the directed reaction of molten zirconium with boron carbide to form a ceramic material composed of zirconium carbide matrix containing a controlled amount of residual zirconium metal. Results from interrupted growth studies, differential thermal analysis, adiabatic reaction temperature calculations, and kinetic measurements have been used to study the kinetics of the process. The reaction is very fast and proceeds parabolic ally with time with a rate constant between 1.6 X 10-2 and 3.9 X 10-2 cm2 /s . The proposed mechanism suggests that when molten zirconium contacts boron carbide, the molten zirconium exothermically reacts with the boron carbide to form a boron-rich liquid. Further reaction is sustained by the continuous dissolution of the boron carbide as the boron-rich liquid is drawn into the boron carbide. The product is a zirconium carbiride/zirconium carbide/zirconium composite which homogenizes quickly at the reaction temperature to yield a uniform product microstructure throughout the composite. Two alternative rate-limiting steps are discussed and the implications of each are explored. 相似文献
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Federica Bondioli Anna Maria Ferrari Cristina Leonelli Cristina Siligardi Gian Carlo Pellacani 《Journal of the American Ceramic Society》2001,84(11):2728-2730
Nanosized zirconium oxide (ZrO2 ) powders were prepared by adding NaOH to a zirconyl chloride aqueous solution under microwave-hydrothermal conditions. The obtained results showed that the tetragonal polymorph increased with increasing NaOH concentration in the starting solution and reached the maximum value by using 1 M ZrOCl2 . The microwave-assisted hydrothermal synthesis is expected to be able to process continuously, and may lead to energy savings because of rapid heating to temperature and increased kinetics of crystallization. This method is very simple and can lead to powders with desirable characteristics such as very fine size, narrow size distribution, and good chemical homogeneity. 相似文献
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