摘要
先以布袋灰、电炉灰、焦粉、水泥制成冷固结球团,进行高温自还原试验。再以纯水泥试样进行差热试验。最后以纯试剂四氧化三铁和石墨粉,配加纯氧化铝粉末并且不添加粘结剂制成的冷固结球团进行自还原试验。通过检测其抗压强度、扫描电子显微镜-能谱分析等方法分析了粉尘冷固结球团高温复合粘接机理,研究表明：低温下粉尘冷固结球团的强度主要靠水泥粘结相保证,随着温度升高,水泥逐渐失效,在1 000℃后金属铁连晶开始生成,并成为主要粘结相,未熔固态成渣物质对金属铁连晶的形成具有负面的影响,当其含量超过15%时就会对金属体连晶的形成产生显著的影响。
The rutile TiO2 white pigment was prepared via short sulfate process of diluted thermal hydroly- sis with self-generating crystal seeds using unenriched low concentration of industrial titanyl sulfate solu- tion as titanium source. The regression relations and influences of the hydrolysis parameters, including pre- adding water volume ratio, aging and hydrolysis time on the structure,particle size distribution and pig- ment properties of metatitanic acid and rutile TiO2 white pigment were investigated. The hydrolysis param- eters significantly influence the number and quality of the initial fomled nuclei,the crystal growth and ag- gregation, and eventually determine the pigment properties of the products. There exist mathematical corre- lations between the hydrolysis parameters and products crystal structure,particle polydispersity index, and pigment properties. The optimal hydrolysis parameters are 0. 123 of the pre-adding water volume ratio, 29.05 rain of the aging time and about 2.6 h of hydrolysis time after the second boiling.
出处
《钢铁钒钛》
北大核心
2017年第4期1-5,共5页
Iron Steel Vanadium Titanium
基金
基金项目：国家自然科学基金（50804025）,四川省科技计划项目（2014JY0197）,四川省人社厅重点项目,攀枝花市科技计划项目（2013CY-G-8,2014CY-G-33,指导性项目）.
关键词
粉尘
冷固结球团
复合粘结
强度
温度
rutile titanium white pigment, unenriched titanyl sulfate solution, hydrolysis, short sulfate process, pigment properties
