XU Ji-fang
,
ZHANG Jie-yu
,
JIE Chang
,
TANG Lei
,
CHOU Kuo-chih
钢铁研究学报(英文版)
The densities of the selected quaternary CaO-MgO-Al2O3-SiO2 slag with low silica were measured by the Archimedean method in a wide temperature range from 1773 to 1873 K. Nine different slag compositions were chosen based on three different levels of CaO content and three different levels of SiO2 content. wMgO was equal to 7.0%. wCaO were varied from 40.04% to 50.64%, for wSiO2=10.25%-20.70%. The effects of temperature, SiO2 content and optical basicity were studied. It is shown that density decreases approximately linearly with an increase in temperature. Under the same CaO content, the density decreases with increasing of SiO2 content, and increases with optical basicity increasing. Based on the experimental data as the boundary of the homogenous phase region predicated by FACTSAGE software, the mass triangle model is used to calculate the density of selected limited homogenous phase region. The results showed that the mass triangle model works well.
关键词:
density
,
slag
,
low silica
,
optical basicity
,
model
何肖飞
,
王新华
,
陈书浩
,
王万军
钢铁
为满足用户对钢中磷含量的要求，攀钢采用“双渣法”转炉脱磷工艺开展脱磷试验，并根据生产条件和转炉工艺特点考察转炉脱磷专用氧枪的实际使用效果。试验中，转炉工艺冶炼前期低温脱磷，后期脱碳升温，吹炼前期采用低供氧强度脱磷喷枪，倒渣时切换为常规吹炼喷枪。在吹炼脱磷前期结束扒渣后，熔池中的w(［P］)下降至0040%以下，脱磷率为47.9%。在试验终点钢水中的w(［P］)均在0.010%以下，波动范围在0.006%~0.010%，w(［P］)的平均值是0.0081%。终点脱磷率波动范围是84.4%~92%，平均值是88.3%。
关键词:
脱磷
,
double slag process
,
oxygen lance
,
slag
,
basicity
丁银贵，王静松，马赛，王广，薛庆国
钢铁
采用以铁精粉、煤粉和石灰石为主要原料制成含碳球团，在1573、1623、1673K下进行了不同加热时间的还原试验研究，并分析计算了炉料带入硫的去向。试验结果表明：在温度为1673K、12min时，渣铁已经能够很好的分离。所得珠铁中碳、硫的质量分数分别为3.53%和0.17%，珠铁的内部组织结构主要由珠光体和渗碳体组成。渣中以硅酸钙(CaSiO3)和硅酸二钙(Ca2SiO4)为主，含有少量的钙镁橄榄石(CaMgSiO4)和玻璃体。计算得知：炉料带入的硫中24.61%进入渣、61.91%进入铁、13.48%进入空气。
关键词:
含碳球团
,
iron nugget
,
slag
,
sulfur
