专利信息

金红石型煅烧晶种的制备方法；脱水天然金红石的生产方法；以低品位原生钛铁矿为原料制造高品位人造金红石的方法；原位生成纳米二氧化钛制备抗紫外聚酯的方法；一种纳米二氧化钛粉体的分散方法；常温固化的二氧化钛溶胶；制备纳米二氧化钛颗粒的方法；一种纳米二氧化钛的制备方法；制备金红石型二氧化钛的方法；纳米级金红石型二氧化钛粉体制备方法；晶相可控的二氯化钛纳米晶的制备方法；液体逼流法制备纳米二氧化钛；一种制备纳米二氧化钛薄膜的方法及其装置；含有纳米二氧化钛薄膜的载体及在空调中的应用；纳米二氧化钛抗菌自清洁塑料母料及其应用；用TiO2超细粉焰熔法人工合成金红石单晶的方法和设备；     

磷酸对制备金红石型钛白粉的影响

以钛铁矿钛液水解后的偏钛酸为原料,研究了磷酸对偏钛酸pH值、钛白初品金红石转化、消色力和亮度的影响规律。结果表明:磷酸电离得到的磷酸根或磷酸氢根离子与体系中的阳离子结合成了沉淀,电离出的氢离子抑制了偏钛酸的电离。随着磷酸掺入量的增加,金红石晶型转化起始温度和TiO_2全部转化成金红石时的温度逐渐提高。样品中P_2O_5含量与金红石晶型转化起始温度和TiO_2全部转化成金红石时的温度均呈正线性相关关系。在钾—磷—铝盐处理体系中,P_2O_5含量低于0.13%时,消色力TCS和蓝相SCX大幅降低;P_2O_5含量高于0.13%时,磷酸对消色力TCS和蓝相SCX的影响不显著。初品中P_2O_5含量0.15%～0.19%时,初品亮度值较佳。     

TiCl_4-AlCl_3水解制备金红石TiO_2对Cr(Ⅵ)吸附研究

为研究金红石TiO_2对Cr(Ⅵ)的吸附,利用TiCl_4-AlCl_3水解制备球形的金红石TiO_2颗粒.在金红石TiO_2对Cr(Ⅵ)的吸附实验中,研究了时间、pH和Cr(Ⅵ)初始浓度对吸附的影响.利用伪一级、二级动力学模型和Webber-Morris模型对吸附动力学数据进行分析,并计算吸附过程的△G0,探究该吸附过程的机理.结果表明:金红石TiO_2对Cr(Ⅵ)的吸附平衡时间约为30 min,适宜的吸附pH值为5,平衡吸附容量随Cr(Ⅵ)初始浓度的增加而增加,当Cr(Ⅵ)浓度为800 mg/L时,吸附容量达到24.38 mg/g.吸附动力学更符合伪二级动力学模型,△Gθ的计算值为-5.679 kJ/mol,表明吸附过程为自发的化学反应过程. Webber-Morris模型拟合结果表明,金红石TiO_2对Cr(Ⅵ)的吸附主要以颗粒表面吸附为主.     

金红石型纳米二氧化钛合成及晶貌控制

采用溶胶-凝胶法制备了一系列锐钛矿型、金红石型和混晶纳米Ti O2,通过改变反应条件获得了具有不同形貌的金红石型样品。借助DTA-TG技术确定所得锐钛矿型向金红石型发生晶型转变的温度,在低于晶型转变的温度下焙烧系列纳米Ti O2样品,对样品用XRD、TEM、IR等技术进行了表征。研究表明,缓凝剂的加入不利于金红石型Ti O2的形成,钛原料浓度增大使样品中金红石型的含量增大,反应初期氨水的加入可加快体系中锐钛矿型Ti O2的生成,反应时间和陈化时间的延长有利于锐钛矿向金红石型的转变。     

还原—锈蚀法制取人造金红石

介绍了用还原—锈蚀法处理含 TiO_2 50%左右的钛铁矿制取人造金红石的主要技术条件及试验室试验结果。结果表明:所产酸洗富钛料 TiO_2含量可达96～97%,经氧化焙烧后得到含 TiO_2>90%的人造金红石。TiO_2回收率达85·24%。     

低价钛充分氧化时间的计算

我厂生产的金红石,是用钛铁矿以电炉法冶炼出高钦渣(Ti~2O_3,TiO_2),送球磨磨细(-40目通过)后,再焙烧而取得的。根据冶金部YB2401-78标准,对金红石质量要求,包括四方面内容:即化学元素(TiO_2、S、P、C)、粒度、无夹杂物和色泽。现阶段对金红石色泽问题,我厂尚未找到科学方法加以控制,影响了产品质量,也降低了数量(因高钛渣焙烧后有增量)。现仅就金红石色泽问题加以研究。一、影响金红石色泽的因素高钛渣焙烧成金红石的工艺过程,是要     

高纯度人造金红石生产工艺——Heubach Reptile96

1　前　言目前 ,氯化法钛白的产量已超过钛白总产量的 56 %。氯化法生产钛白 ,原料中的铁以氯化铁形式除去 ,产出大量的氯化铁废料。生产钛白时 ,原料中的 Ti O2 含量越高 ,产生的废料就越少 ,因此 ,氯化法对原料纯度要求越来越高 ,促使人造金红石生产工艺不断改进 ,Heubach Reptile96高纯度人造金红石生产工艺就是在此情况下应运而生的。2　人造金红石生产新工艺人造金红石生产新工艺—— HeubachReptile 96是基于置换金红石法( Replacement rutile) ,取其中的 Rep和 tile,而产品中的 Ti O2 含量高达 96 % ,故称Heubach Reptile96 ,简…     

Fe3+掺杂纳米TiO2的表征及其光催化性能的研究

[目的]提高TiO2的可见光响应和光催化活性.[方法]采用溶胶凝胶法制备掺铁纳米TiO2粉体,进而研究掺铁TiO2的光催化活性.[结果]450 ℃煅烧后掺铁TiO2出现了很明显的TiO2特征衍射峰,且峰形尖锐,结晶良好,均没有出现铁的掺杂新相.随着掺铁量的提高,TiO2的粒径逐渐减小,当掺杂量为0.4%时,TiO2的粒径最小,减少至纯TiO2的45%.掺铁抑制了锐钛矿向金红石矿的转变.随着焙烧温度的升高,TiO2的粒径逐渐增大.用溶胶-凝胶法制备的TiO2均为纳米级,基本成球形颗粒.纯TiO2粒子分布不是很均匀,团聚现象明显;掺铁TiO2颗粒分布均匀,没有明显的团聚现象;掺铁使TiO2在紫外灯和太阳光下的降解性能都有着不同程度的提高.[结论]溶胶-凝胶法制备的掺铁纳米TiO2细化了晶体晶粒,抑制了锐钛矿向金红石矿的转变.     

我国硫酸法金红石钛白现状及对策

从金红石初品钛白粉、无机包膜、有机处理3个关键环节分析了我国硫酸法金红石钛白的不足、产品质量现状以及如何从这3个关键环节入手提高我国硫酸法金红石钛白产品质量。     

提高钛白粉油分散性的几种方法的探索

通过对金红石钛白粉产品油分散性判定方法的分析,结合硫酸法金红石钛白生产工艺特征,探索并实践了几个关键工艺环节对油分散性提高的影响,对金红石钛白粉油分散性的提高有着积极的借鉴意义。     

Chinalco Signed Framework Agreement for Strategic Cooperation with Harbin Municipal Government

正Last month,Chinalco signed framework agreement for strategic cooperation with Harbin Municipal Government in Harbin Xiong Weiping,Chairman of Chinalco,said that based on the strategic deployment to build world top-class mining company with the highest growth potential,Chinalco was now concentrating all efforts on making strategic transition and structural adjustment,strategic cooperation with the local governments where     

Jiangxi Promotes Jiangxi Copper Corporation To Become The World's Most Competitive Mining Company

<正>According to the latest info from Jiangxi Province State-owned Assets Supervision and Administration Commission,Jiangxi Copper Corporation was approved to become the first pilot enterprise for deepening reform.Contents of the pilot work is"Three Self"(self expansion,self decision-making,self     

Journal of Rare Earths Contents List of Vol.32(2014)

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Contributions to Baosteel Technical Research wanted

正Baosteel Technical Research,a quarterly journal,which is issued domestically and abroad,is run and sponsored by Baosteel Group Corporation.Baosteel Technical Research mainly reports the achievements in technological innovation,academic research,new product development and industrial equipment improvement by Baosteel.It will continue to follow up on hot topics and serve the company’s technological development and progress.Its readers include experts in     

Ministry of Industry and Information Technology: No Short Term Solution For Our Country’s Excess Nonferrous Metal Smelting Capacity

【正】According to the Ministry of Industry and Information Technology,the Ministry has released the 2013 Operation Report on China’s Industrial Communication Indu...     

Chinalco Signed Framework Agreement for Strategic Cooperation with Gansu Province

正Recently,Chinalco and Gansu Provincial People’s Government signed"Framework Agreement for Strategic Cooperation on Reform,Restructuring and Transition Development of Chinalco’s Electrolytic Aluminum Enterprises in Gansu",signifying that the strategic cooperation between Chinalco and Gansu Province had made new substantive progress.     

Unavoidable Economic Cycle:30% Of Nonferrous Metal Companies Were Involved In Restructuring

正Owing to continual downturn in real estate and bulk commodity markets,a number of traditional industries in China suffered unfavorable impact in performance.With the progressive disclosure of third quarter report,the no-pleasant-surprise performance of     

Baotou Rare Earth Became the World's Biggest High Performance Magnetic Material Base

正The High Performance Magnetic Material Phase II Project,an industry upgrading project implemented by Inner Mongolia Baotou IronSteel Rare Earth(Group)Hi-tech Co.,Ltd,recently basically finished equipment commissioning,signifying that the enterprise had developed the production capacity of15000 t/a Nd-Fe-B strip casting alloy and 5000t/a Nd-Fe-B magnet,thus becoming the world’s     

Introducing Two Central Enterprises to Integrate Rare Earth Industry,Shandong Rare Earth Group Breaks Surface

正With the signing of"Letter of intention for Propelling Integration of Shandong Rare Earth Enterprises"between Shandong Province Commission Of Economy and Informatization,China IronSteel Research Institute Group("China Steel Institute"),and China Rare MetalsRare Earth Co.,Ltd("China Rare Earth"),the"Shandong Rare Earth Group"jointly set up by the 3 units thus broke surface.On August 9,reporters of the China Economic Herald learned from Shandong Province     

Aluminium Production by Province or City in 2014

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