首页|A novel process to prepare high-titanium slag by carbothermic reduction of pre-oxidized ilmenite concentrate with the addition of Na <ce:inf loc="post">2</ce:inf>SO <ce:inf loc="post">4</ce:inf>
A novel process to prepare high-titanium slag by carbothermic reduction of pre-oxidized ilmenite concentrate with the addition of Na <ce:inf loc="post">2</ce:inf>SO <ce:inf loc="post">4</ce:inf>
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NSTL
Elsevier
<![CDATA[<ce:abstract xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns="http://www.elsevier.com/xml/ja/dtd" id="ab0005" xml:lang="en" view="all" class="author"><ce:section-title id="st0005">Abstract</ce:section-title><ce:abstract-sec id="as0005" view="all"><ce:simple-para id="sp0150" view="all">In this paper, a novel process was studied for the recovery of iron and titanium from ilmenite concentrate. The ilmenite powders first underwent an oxidation pretreatment and were reduced isothermally at 1350–1450°C by graphite with the addition of Na<ce:inf loc="post">2</ce:inf>SO<ce:inf loc="post">4</ce:inf>. The influence of temperature, C/O molar ratio and the dosage of the added Na<ce:inf loc="post">2</ce:inf>SO<ce:inf loc="post">4</ce:inf>on the metallization ratio, phase transformation and titanium grade were studied. The results demonstrated that Na<ce:inf loc="post">2</ce:inf>SO<ce:inf loc="post">4</ce:inf>not only significantly promotes the aggregation and growth of metallic iron-grain particles but also enhances the reduction ability. Under the promotion of added Na<ce:inf loc="post">2</ce:inf>SO<ce:inf loc="post">4</ce:inf>, the highest metallization ratio reached 94%, and the theoretical calculation of the highest grade of titanium dioxide is approximately 75%. The Na<ce:inf loc="post">2</ce:inf>SO<ce:inf loc="post">4</ce:inf>additive decreases the melting point of the slag and metal, resulting in the effect of semi-melting reduction. The carbothermic reduction order of phase transitions of pre-oxidized ilmenite concentrate was also discussed.</ce:simple-para></ce:abstract-sec></ce:abstract><ce:abstract xmlns:ce="http://www.elsevier.com/xml/common/dtd" xmlns="http://www.elsevier.com/xml/ja/dtd" id="ab0010" class="author-highlights" xml:lang="en" view="all"><ce:section-title id="st0010">Highlights</ce:section-title><ce:abstract-sec id="as0010" view="all"><ce:simple-para id="sp0155" view="all"><ce:list id="l0005"><ce:list-item id="li0005"><ce:label>?</ce:label><ce:para id="p0005" view="all">A new process has been proposed for recovery of iron and titanium by reducing pre-oxidized ilmenite concentrate.</ce:para></ce:list-item><ce:list-item id="li0010"><ce:label>?</ce:label><ce:para id="p0010" view="all">The isothermal reduction behavior of pre-oxidation concentrate with graphite and sodiumsulphate additive was studied.</ce:para></ce:list-item><ce:list-item id="li0015"><ce:label>?</ce:label><ce:para id="p0015" view="all">The influence of reduction conditions on the metallization ratio and grade of the titanium dioxide was studied.</ce:para></ce:list-item><ce:list-item id="li0020"><ce:label>?</ce:label><ce:para id="p0020" view="all">The carbothermic reduction order of phase transitions of pre-oxidation ilmenite concentrate was also discussed.</ce:para></ce:list-item></ce:list></ce:simple-para></ce:abstract-sec></ce:abstract>]]>
NSTL
Elsevier
