Crystallization Behaviors of Anosovite and Silicate Crystals in High CaO and MgO Titanium Slag

被引：15

作者：

Fan, Helin ^{[1
,2
]}

Chen, Dengfu ^{[1
,2
]}

Liu, Tao ^{[1
,2
]}

Duan, Huamei ^{[1
,2
]}

Huang, Yunwei ^{[1
,2
]}

Long, Mujun ^{[1
,2
]}

He, Wenjie ^{[1
,2
]}

机构：

[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China

[2] Chongqing Univ, Chongqing Key Lab Vanadium Titanium Met & Adv Mat, Chongqing 400044, Peoples R China

来源：

METALS | 2018年 / 8卷 / 10期

关键词：

crystallization behaviors; crystallization rate; anosovite crystals; silicate crystals; titanium slag; SYNTHETIC RUTILE; SOLIDIFICATION; VISCOSITIES; FEO-TIO2; GROWTH;

D O I：

10.3390/met8100754

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Electric-furnace smelting has become the dominant process for the production of the titanium slag from ilmenite in China. The crystallization behaviors of anosovite and silicate crystals in the high CaO and MgO titanium slag were studied to insure smooth operation of the smelting process and the efficient separation of titanium slag and metallic iron. The crystallization behaviors were studied by a mathematical model established in this work. Results show that the crystallization order of anosovite and silicate crystals in high CaO and MgO titanium slag during cooling is: Al2TiO5 > Ti3O5 > MgTi2O5 > MgSiO3 > CaSiO3 > FeTi2O5 > Mn2SiO4 > Fe2SiO4. Al2TiO5 and Ti3O5 have higher crystallization priority and should be responsible for the sharp increase in viscosity of titanium slag during cooling. The total crystallization rates of anosovite and silicate crystals are mainly controlled by Al2TiO5 and MgSiO3, respectively. The mass ratio of Ti2O3/Sigma TiO2 has a prominent influence on the total crystallization rate of anosovite crystals while the mass ratio of MgO/FeO has a slight influence on the total crystallization rate of anosovite crystals.

引用

页数：12

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