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焦宝石基喷涂料的研制 被引量:12
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作者 张巍 李亮 戴文勇 《耐火材料》 CAS 北大核心 2009年第6期458-459,共2页
以焦宝石、叶蜡石、硅微粉和铝酸钙水泥为原料制备了焦宝石基喷涂料,对比分析了焦宝石基喷涂料与焦宝石-铝矾土基喷涂料的物理性能。结果表明:焦宝石基喷涂料与焦宝石-铝矾土基喷涂料的性能相当,但是该喷涂料成本较低,可部分替代焦宝石... 以焦宝石、叶蜡石、硅微粉和铝酸钙水泥为原料制备了焦宝石基喷涂料,对比分析了焦宝石基喷涂料与焦宝石-铝矾土基喷涂料的物理性能。结果表明:焦宝石基喷涂料与焦宝石-铝矾土基喷涂料的性能相当,但是该喷涂料成本较低,可部分替代焦宝石-铝矾土基喷涂料修补高炉的衬里,使用效果良好。 展开更多
关键词 宝石基涂料 宝石-铝矾土基涂料
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铝酸钙水泥对焦宝石基喷涂料性能的影响 被引量:19
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作者 张巍 戴文勇 小宫山勇 《陶瓷》 CAS 2009年第2期22-23,32,共3页
以焦宝石颗粒及细粉为主要原料,铝酸钙水泥为结合系统,分别研究了不同铝酸钙水泥含量对焦宝石基喷涂料性能的影响。结果表明,焦宝石基喷涂料的抗折强度随着铝酸钙水泥含量的增加呈上升趋势,但经过600℃、1000℃和1300℃烧结后的焦宝石... 以焦宝石颗粒及细粉为主要原料,铝酸钙水泥为结合系统,分别研究了不同铝酸钙水泥含量对焦宝石基喷涂料性能的影响。结果表明,焦宝石基喷涂料的抗折强度随着铝酸钙水泥含量的增加呈上升趋势,但经过600℃、1000℃和1300℃烧结后的焦宝石基喷涂料的耐压强度随着铝酸钙水泥含量的增加呈先增加后减小的趋势。 展开更多
关键词 宝石基涂料 铝酸钙水泥 硅微粉
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叶腊石对焦宝石基喷涂料性能的影响 被引量:25
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作者 张巍 戴文勇 《耐火与石灰》 2008年第6期5-6,10,共3页
以焦宝石颗粒及细粉为主要原料,铝酸钙水泥为结合系统,分别研究了不同叶腊石含量对焦宝石基喷涂料性能的影响。结果表明,焦宝石基喷涂料经过600℃、1000℃、1300℃烧结后,线变化率随着叶腊石含量的增加线收缩率逐渐减小,抗折强度、耐压... 以焦宝石颗粒及细粉为主要原料,铝酸钙水泥为结合系统,分别研究了不同叶腊石含量对焦宝石基喷涂料性能的影响。结果表明,焦宝石基喷涂料经过600℃、1000℃、1300℃烧结后,线变化率随着叶腊石含量的增加线收缩率逐渐减小,抗折强度、耐压强度随着叶腊石含量的增加呈现下降的趋势。 展开更多
关键词 宝石基涂料 叶腊石 热处理温度
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热处理温度对焦宝石基喷涂料性能的影响 被引量:13
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作者 张巍 吴洋 +1 位作者 戴文勇 小宫山勇 《耐火与石灰》 2009年第1期20-21,24,共3页
以焦宝石颗粒及细粉为主要原料,以硅微粉、铝酸钙水泥为结合剂,研究了不同热处理温度对焦宝石基喷涂料性能的影响。结果表明,随着热处理温度的提高,焦宝石基喷涂料的体积密度无明显变化,线变化率随热处理温度的提高而增大。焦宝石基喷... 以焦宝石颗粒及细粉为主要原料,以硅微粉、铝酸钙水泥为结合剂,研究了不同热处理温度对焦宝石基喷涂料性能的影响。结果表明,随着热处理温度的提高,焦宝石基喷涂料的体积密度无明显变化,线变化率随热处理温度的提高而增大。焦宝石基喷涂料的抗折强度和耐压强度随着热处理温度的提高呈现先减小后增大的趋势。 展开更多
关键词 宝石基涂料 铝酸钙水泥 热处理温度
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棕刚玉、铝矾土对焦宝石基喷涂料性能的影响 被引量:1
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作者 李亮 戴文勇 张巍 《陶瓷》 CAS 2009年第4期50-52,共3页
研究了棕刚玉和铝矾土对焦宝石基喷涂料性能的影响。研究表明,随热处理温度的提高焦宝石基喷涂料体系的线变化率表现为:单添加棕刚玉时收缩,单添加铝矾土时先收缩后膨胀,两者双添加时则先收缩后膨胀最后再收缩;双添加棕刚玉和铝矾土的... 研究了棕刚玉和铝矾土对焦宝石基喷涂料性能的影响。研究表明,随热处理温度的提高焦宝石基喷涂料体系的线变化率表现为:单添加棕刚玉时收缩,单添加铝矾土时先收缩后膨胀,两者双添加时则先收缩后膨胀最后再收缩;双添加棕刚玉和铝矾土的体系其线变化率的变化趋势接近于单添加棕刚玉体系,而抗折强度、耐压强度变化则接近于单添加铝矾土体系;单添加棕刚玉体系在110℃、1000℃、1300℃时的抗折强度、耐压强度波动范围最小。 展开更多
关键词 棕刚玉 铝矾土 宝石基涂料
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150t电弧炉泡沫渣的合理工艺 被引量:5
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作者 沈颐身 范光前 +8 位作者 李正熹 李子伯 毕云江 姜桂连 于平 张再斌 周国平 李连仓 范兵 《特殊钢》 北大核心 1998年第2期33-35,共3页
采用喷吹技术连续向熔池喷吹焦粒和提高供氧强度,在150t的电弧炉熔炼过程形成连续稳定、高度500~800mm的泡沫渣,遮蔽了电弧,降低了噪音。经过500炉的实验,其结果节电>30kWh/t,供电时间缩短3~5.5min。
关键词 电炉炼钢 泡沫渣 喷焦
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Influence of hydrogen-enriched atmosphere under coke oven gas injection on reduction swelling behaviors of oxidized pellet 被引量:4
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作者 龙红明 王宏涛 +2 位作者 狄瞻霞 春铁军 柳政根 《Journal of Central South University》 SCIE EI CAS CSCD 2016年第8期1890-1898,共9页
It is of great importance to elucidate reduction swelling behaviors and reaction mechanism of oxidized pellet in hydrogen-enriched atmosphere under coke oven gas injection. In this work, the effects of hydrogen concen... It is of great importance to elucidate reduction swelling behaviors and reaction mechanism of oxidized pellet in hydrogen-enriched atmosphere under coke oven gas injection. In this work, the effects of hydrogen concentration in N_2-CO-H_2 atmosphere with unchanged CO content on reduction swelling behaviors of oxidized pellet at 1173 K were studied, to clarify the mechanism of hydrogen-enriched reduction and exclude the influences of CO. Then, the reduction swelling behaviors of oxidized pellet at 1173 K in actual atmosphere under coke oven gas(COG) injection, got from the simulation results of multi-fluid blast furnace model, were investigated. The results show that with the concentration of hydrogen increasing in N_2-CO-H_2 gas from 2% to 18%, the reduction swelling index of pellet decreases from 10.12% to 5.57% while the reduction ratio of pellet increases obviously from 39.85% to 69.58%. In addition, with COG injection rate increasing from 0 to 152.34 m^3/t, the reduction swelling index of pellet decreases slightly from 10.71% to 9.54% while the reduction ratio of pellet is increased from 31.57% to 36.39%. The microstructures of pellet are transformed from the platy structure to the flocculent structure. 展开更多
关键词 reduction swelling behaviors oxidized pellet coke oven gas(COG) injection blast furnace hydrogen-enriched reduction
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A Reflectron Time-of-Flight Mass Spectrometer with a Nano-Electrospray Ionization Source for Study of Metal Cluster Compounds
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作者 吴小虎 谢华 +3 位作者 刘志凌 苏海峰 林水潮 唐紫超 《Chinese Journal of Chemical Physics》 SCIE CAS CSCD 2016年第4期401-406,I0001,共7页
An experiment facility has been set up for the study of metal cluster compounds in our laboratory, which consists of a nano-electrospray ionization source, an ion transmission and focus system, and a reflectron time-o... An experiment facility has been set up for the study of metal cluster compounds in our laboratory, which consists of a nano-electrospray ionization source, an ion transmission and focus system, and a reflectron time-of-fight mass spectrometer. Taking advantage of the nano-electrospray ionization source, polyvalent ions are usually produced in the "ionization" process and the obtained mass resolution of the equipment is over 8000. The molecular ion peaks of metal cluster compounds [Au20(PPhpy2)10Cl2](SbF6)4, where PPhpy2=bis(2- pyridyl)phenylphosphine, and [AuaAg2(C)L6](BF4)4, where L=2-(diphenylphosphino)-5- methylpyridine, are distinguished in the respective mass spectrum, accompanied by some fragment ion peaks. In addition, the mass-to-charge ratios of the parent ions are determi- nated. Preliminary results suggest that the device is a powerful tool for the study of metal cluster compounds. It turns out that the information obtained by the instrumentation serves as an essential supplement to single crystal X-ray diffraction for structure characterization of metal cluster compounds. 展开更多
关键词 Nano-electrospray ionization source Ion transmission and focus system Reflectron time-of-flight mass spectrometer Metal cluster compounds Single crystal X-ray diffraction
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稳定湿法(CSQ)熄焦工艺(摘译)
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作者 杜晓武 《太钢译文》 2000年第3期6-9,共4页
关键词 稳定熄 淋熄 水仓式熄
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Velocity and Size of Droplets in Dense Region of Diesel Fuel Spray on Transient Needle Opening Condition
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作者 Hironobu UEKI Masahiro ISHIDA Daisaku SAKAGUCHI 《Journal of Thermal Science》 SCIE EI CAS CSCD 2005年第2期181-186,共6页
In order to investigate the effect of transient needle opening on early stage of spray behavior, simultaneous measurements of velocity and size of droplet were conducted by a newly developed laser 2-focus velocimeter ... In order to investigate the effect of transient needle opening on early stage of spray behavior, simultaneous measurements of velocity and size of droplet were conducted by a newly developed laser 2-focus velocimeter (L2F). The micro-scale probe of the L2F was consisted of two foci with a distance of 36μm. The tested nozzle had a single hole with a diameter of 0.2 mm. The measurements of injection pressure, needle lift, and crank angle were synchronized with the spray measurement by the L2F at the position 10 mm downstream from the nozzle exit. It has been clearly shown that the velocity and size of droplet increase with needle valve opening and that the probability density distribution of droplet size can be fitted to the Nukiyama-Tanasawa distribution under the transient needle opening condition. 展开更多
关键词 droplet disintegration optical characterization laser 2-focus velocimeter.
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