含钛高炉渣钛组分富集-分选试验研究

对攀钢集团有限公司含钛高炉水淬渣进行定向富集,并对富集渣进行浮选研究。结果表明,在焙烧温度为1 250℃、碱度R=3.0、渣中CaF2加入量为6%、焙烧时间为4 h及冷却速率为10℃/min的条件下,钙钛矿的晶粒可长大到40μm左右;在羟肟酸用量为12 kg/t,pH值为9,起泡剂为2#油的条件下进行浮选,精矿中TiO2品位可达到50%左右,TiO2回收率约为35%;尾矿中TiO2品位在10%左右。     

由含钛高炉渣合成复合肥初探

以含钛高炉渣作为主要原料,采用加热法制备复合肥,以提高其溶解性能,使其中的营养元素转化为易被植物吸收利用的形式．考察了工艺条件对肥料溶解性能的影响．结果表明,合成复合肥的适宜工艺条件为：硫酸铵与含钛高炉渣的质量比为8：1,加热温度为300℃,恒温时间为30min．复合肥中含有氮、硅、硫、钙、镁、铁和钛等营养元素,其中氮、硫、镁、铁和钛以水溶性物质的形式存在;硅和钙以枸溶性物质的形式存在,均可被植物有效利用．     

硫掺杂含钛高炉渣光催化剂性能研究

以含钛高炉渣为原料,硫脲为掺杂剂,采用高能球磨法制备了S掺杂含钛高炉渣催化剂,通过XRD、UV—vis吸收光谱、SEM等对其进行表征．研究甲基橙溶液pH值等对可见光光催化降解甲基橙的影响．结果表明,经过焙烧的掺硫催化剂对可见光吸收增强,吸收带边明显“红移”;当pH=2时,甲基橙氧化效果最好．     

含钛高炉渣作为光催化材料降解酸性铬兰K

含钛高炉渣具有光催化性能,可处理水中有机污染物.为拓展去除污水中有机物的应用,选用含钛高炉渣作为光催化材料降解酸性铬兰K.用悬浮溶液法进行了光催化降解实验,探讨了光催化剂量、紫外光强度、外加电场及添加H2O2对光催化效果的影响.结果表明:对含钛高炉渣光催化剂的最佳加入量为0.01g/mL的酸性铬兰K溶液,酸性铬兰K的降解率受光强度的影响不显著.外加电场可提高溶液中酸性铬兰K降解率,外加电场电压大于20V后降解率基本不变,加入少量的H2O2能够提高酸性铬兰K的降解率.     

高钛型高炉渣的表面性质

实测了攀钢高炉现场渣的表面粘度、表面张力及渣—石墨间的界面张力等重要的表面物理化学性质，考察了ＣａＦ２、ＭｎＯ、ＢａＯ、ＭｇＯ、ＴｉＯ２及碱度等对以上诸性质的影响．在此基础上，讨论了高钛型高炉渣的起泡机理和在炉内焦炭层中的透过性．     

BaO改善高钛型高炉渣起泡性能的研究

着重探讨了渣中BaO含量与钛渣起泡性能的关系,指出适宜BaO含量对改善钛渣起泡性能,对钒钛矿冶炼是很有好处的。     

含钛高炉渣的湿法提钛研究进展

高炉法冶炼钒钛磁铁矿过程中产生了大量含TiO225%左右的高钛渣。含钛高炉渣是宝贵的二次钛资源,但大量堆积会污染环境,湿法提钛工艺是利用资源,保护环境的有效途径之一。总结分析了近年来湿法冶金处理含钛高炉渣的研究现状,系统阐述了酸浸湿法冶金的工艺特点,分析存在的问题,并对含钛高炉渣的利用提出一些建议,以期不断推动实现攀钢含钛高炉渣的真正利用。     

高钛型高炉渣炉内堵塞与液泛行为研究

在高温熔滴炉上模拟高炉软熔带料柱结构,考究了高钛型高炉熔渣在焦炭层中的透过性。研究了气体流量、ＴｉＯ２含量、ＴｉＯ２还原度和渣－焦界面性质对熔渣在焦层中的堵塞与液泛行为的影响。     

碳氮化含钛高炉渣对铁沟捣打料抗氧化性及抗渣性的影响

测定碳氮化处理后含钛高炉渣的熔化特性,并研究在高炉铁沟捣打料中加入碳氮化含钛高炉渣后对材料抗氧化性及抗渣性的影响。结果表明,含钛高炉渣经碳氮化处理后,渣中主要的矿物相为氮化钛或碳氮化钛和钙镁黄长石或钙铝黄长石,渣中相的组成和含量受还原温度影响较大,随着渣的还原温度升高,还原渣的熔点呈上升趋势;将还原渣引入到高炉铁沟捣打料中,部分或完全替代碳化硅原料,可明显提高捣打料的抗氧化性,最佳的渣加入量为7%,过多将会导致捣打料抗氧化性减弱;因Ti（C,N）具有优良的抗渣性能,碳氮化含钛高炉渣的引入不影响高炉铁沟捣打料的抗渣性。     

Effect of cooling rate on the crystallization behavior of perovskite in high titanium-bearing blast furnace slag

The effect of cooling rate on the crystallization of perovskite in high Ti-bearing blast furnace（BF） slag was studied using confocal scanning laser microscopy（CSLM）. Results showed that perovskite was the primary phase formed during the cooling of slag. On the slag surface, the growth of perovskite proceeded via the successive production of quasi-particles along straight lines, which further extended in certain directions. The morphology and structure of perovskite was found to vary as a function of cooling rate. At cooling rates of 10 and 30 K/min, the dendritic arms of perovskite crossed obliquely, while they were orthogonal at a cooling rate of 20 K/min and hexagonal at cooling rates of 40 and 50 K/min. These three crystal morphologies thus obtained at different cooling rates respectively corresponded to the orthorhombic, cubic and hexagonal crystal structures of perovskite. The observed change in the structure of perovskite could probably be attributed to the deficiency of O^2-, when Ti2O3 was involved in the formation of perovskite.     

粒化高炉矿渣代砂混凝土性能的试验研究

试验利用粒化高炉矿渣取代部分砂(特细砂)作为细骨料拌制混凝土,以不同的矿渣代砂率为主要变量,对10组不同配合比混凝土的流动性,立方体抗压强度进行研究。试验结果表明,混凝土的流动性随矿渣代砂率的增加逐渐降低,混凝土立方体抗压强度随矿渣代砂率的增加先增大后减小,矿渣的最优代砂率为60%;矿渣细骨料对混凝土后期强度的增长有促进作用。同时拟合出适合于矿渣代砂混凝土抗压强度的预测模型。     

综合利用包钢高炉布袋除尘灰制备微晶玻璃的试验研究

以包钢高炉布袋除尘灰、二氧化硅、氧化钙、氧化铝为主要原料,采用熔融法制备CaO-Al2O3-SiO2系微晶玻璃.利用DSC,SEM等方法对该玻璃体系进行测试,探讨了微晶玻璃中布袋除尘灰含量对晶化行为的影响.试验结果表明,布袋除尘灰含量的利用率可达到50%.本研究为包钢高炉布袋除尘灰综合利用提供了途径,并有效地解决了环境污染和占地问题.     

水淬高炉矿渣超细粉的应用与制备

系统介绍炼铁高炉水淬矿渣的性能、矿渣微粉在水泥和混凝土中的应用及矿渣微粉制备的设备和工艺流程，为冶金企业水淬高炉矿渣的深层次开发利用提供重要参考。     

A Blended Cement Containing Blast Furnace Slag and Phosphorous Slag

Blended cement comaining blast furnace slag( BFS ) and phosphorous slag( PS) is a new kind of cement. The total content of blended materials could increase if two additives were used. Using the same admixtures , the properties of the blended cement with 70% additives could reach the standard of 525-grade slag cement according to GB. The strength of cement with 80% additives could reach the standard of 425-grade slag cement. The tests of strength, pore structure, hydration products, inhibiting alkali-aggregate reaction, resistance to sulfate corrosion of BFS-PSC were performed.     

Effect of phase separation structure on cementitious reactivity of blast furnace slag

Blast furnace slag samples with phase separation structure were prepared by re-melting and then water quenching process. By use of XRD, DTA and SEM technologies in combination with mechanical property experiment, the structure characteristics of samples were determined and their effects on cementitious reactivity were investigated. The results show that the samples with phase separation have better cementitious reactivity than sample with homogenous glass and sample with crystalline phases, which mainly contributes to its glass structure with coexistence of Ca-O rich phase and Si-O rich phase. Moreover, the amorphous samples possess hydrability which is affected by their formation process, since phase separation extends the range of possible Ca-rich crystalline phases. Supported by the National Natural Science Foundation of China (Grant No. 50674062) and the Postdoctoral Science Foundation of China (Grant No. 20070420354)     

掺加矿渣的土壤聚合物对重金属的固化

在土壤聚合物固化重金属时进行了掺加不同量高炉矿渣的实验，测定固化体的抗压强度、浸出毒性．试验结果表明，土壤聚合物掺加一定量的高炉矿渣固化重金属对不同的重金属固化效果不同，但总体来说，固化体的浸出毒性低于国家标准，抗压强度可迭30MPa以上，能用于建材．高炉矿渣的掺量在30％左右时抗压强度最好，浸出毒性则随着高炉矿渣掺量的增加而下降，所以利用土壤聚合物固化一定含量的重金属时，可以加入适当的高炉矿渣来减小浸出毒性．