Thermodynamic Investigations of New Cobalt Smelting for Cobalt Rich Crust

富钴结壳新型钴冶炼热力学研究

• 批准号: 18560709
• 负责人: YAMAGUCHI Katsunori
• 金额: $ 2.46万
• 依托单位: Iwate University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2006
• 资助国家: 日本
• 起止时间: 2006 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18560709/
• 关键词: Cobalt; Smelting Process; Manganese; Phosphorus; Phase Diagram; スラグ; コバルトリッチクラスト; 不純物分配

The fundamental investigations for a phase diagram and thermodynamic properties of the MnO-SiO2-CaO and FeO-SiO2-CaO slag systems with iron saturation were carried out in an aim to develop new cobalt smelting for a cobalt rich crust.The phase diagram of the MnO-SiO2-CaO system was determined at 1573K with iron saturation. The liquidus lines and phase equilibrium relations are agreement with the previous data by Glasser et al.Distribution ratios of cobalt and phosphorus between the MnO-SiO2-CaO or FeO-SiO2-CaO slags and liquid iron were measured at 1823K. the values of cobalt between the MnO-SiO2-CaO or FeO-SiO2-CaO slags and iron showed the around 0.001-0.01, and the cobalt is enriched to liquid iron. The ratios of phosphorus between the MnO-SiO2-CaO or FeO-SiO2-CaO slags and liquid iron increased with increasing of CaO concentration in the slag. CaO rich slags are available for the elimination of phosphorus from Co-Fe alloys.Based on the distribution ratios, the activity coefficients of CoO and PO2.5 in the MnO-SiO2-CaO and FeO-SiO2-CaO slags were derived at 1823K. The values for CoO in the MnO-SiO2-CaO slag system were form 1 to 2, and these values for FeO-SiO2-CaO slags were around 0.2-0.4. On the other hand, the activity coefficients of PO2.5 in the MnO-SiO2-CaO and FeO-SiO2-CaO slags showed very small values as γ=10^<-8>-10^<-4>.

为开发富钴结壳冶炼新工艺，对MnO-SiO2-CaO和FeO-SiO2-CaO渣系铁饱和相图和热力学性质进行了基础研究，测定了1573 K时MnO-SiO2-CaO渣系铁饱和相图。测定了1823 K时钴和磷在MnO-SiO_2-CaO或FeO-SiO_2-CaO渣系与铁液之间的分配比。MnO-SiO_2-CaO或FeO-SiO_2-CaO渣系与铁的钴值在0.001-0.01之间，钴向铁液富集。MnO-SiO2-CaO或FeO-SiO2-CaO渣系与铁液之间的磷比随渣中CaO浓度的增加而增加。在1823 K下，根据CoO和PO2.5在MnO-SiO2-CaO和FeO-SiO2-CaO渣系中的分配比，计算了CoO和PO2.5在MnO-SiO2-CaO和FeO-SiO2-CaO渣系中的活度系数。MnO-SiO2-CaO渣系中CoO的值为1 ~ 2，FeO-SiO2-CaO渣系中CoO的值为0.2 ~ 0.4左右。而MnO-SiO_2-CaO和FeO-SiO_2-CaO渣系中PO_（2.5）的活度系数很小，γ=10^<-8>-10 ^<-4>。

项目成果

1823Kにおける溶鉄とSiO2-CaO-FeOx系スラグ間のコバルトの分配

1823K时钴在铁水和SiO2-CaO-FeOx渣之间的分布

• 发表时间: 2007
• 期刊: 資源・素材2007 2
• 作者: 伊藤亮;山口勉功
• 通讯作者: 山口勉功

コバルトリッチクラストを原料とした新コバルト製錬に関する熱力学的研究

以富钴结壳为原料的新型钴冶炼热力学研究

• 发表时间: 2007
• 作者: 伊藤亮;山口勉功
• 通讯作者: 山口勉功

Distribution rations of cobalt between the FeO-SiO2-CaO slags and liquid iron at 1823K

1823K FeO-SiO2-CaO渣与铁液中钴的分配比

• 发表时间: 2007
• 期刊: Shigen to Sozai 2007 Vol. 2
• 作者: 伊藤亮;山口勉功;Ryo Ito and Katsunori Yamaguchi
• 通讯作者: Ryo Ito and Katsunori Yamaguchi

MnO-CaO-SiO_2系スラグと溶鉄間のリンとコバルトの分配挙動

MnO-CaO-SiO_2渣与铁水之间磷、钴的分布行为

• 发表时间: 2007
• 期刊: 資源・素材学会春季大会講演集 (II) 素材編
• 作者: T. Uchikoshi;S. Furumi;T. Suzuki;Y. Sakka;伊藤 亮
• 通讯作者: 伊藤 亮

Thermodynamic Investigations of New Cobalt Smelting for Cobalt Rich Crust

富钴结壳新型钴冶炼热力学研究

• 发表时间: 2007
• 作者: 伊藤亮;山口勉功;Ryo Ito and Katsunori Yamaguchi
• 通讯作者: Ryo Ito and Katsunori Yamaguchi