Thermodynamic Study on Production of High Purity Copper

高纯铜生产的热力学研究

• 批准号: 03453061
• 负责人: YAMAUCHI Chikabumi
• 金额: $ 4.35万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1993
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-03453061/
• 关键词: Purification; Sodium Carbonate; Copper; Distribution Ratio; Activity; Selenium; シリコン; テルル; 鉄; 炭酸ソ-ダスラグ; ヒ素; スズ

In order to estimate the distribution ratios of Se between sodium carbonate-based slag and molten copper, the following measurements have been conducted on the thermodynmic properties of the slags containing Se-oxide at 1423 K to1523 K.(1) Electrochemical measurements of activity of NaO_<0.5> in NaO_<0.5>-CO_2-SeO_2 slag under various partial pressues of CO_2 over the composition range of 1 > N (〕SY.gtoreq.〔) 0.667 {N = n_<Na>/(n_<Na>+n_<Se>), n : the number of moles} by using beta"-alumina as a solid electrolyte.(2) Distribution equilibrium measurements of Se between the slag and molten copper, and(3) Solubility measurements of CO_2 in the slags.Finally based on the results, the equilibrium distribution ratio of Se between the slags and molten copper have been estimated as a function of partial pressures of CO_2 and oxygen and the slag composition at the temperatures of 1423 K and 1523 K.Higher distribution ratios are achieved under conditions of higher partial pressure of oxygen and lower partial pressure of CO_2.Experiments were also conducted for the slag of N * 1 in order to evaluate the effect of partial pressure of oxygen on the distribution ratios. The distribution ratio of Se has two different dependences on the oxygen partial pressure. Under the relatively low oxygen partial pressure, the distribution ratio of both elements decreases with increasing oxygen partial pressure while under the relatively high oxygen partial pressure the distribution ratio of Se increases with increasing the oxygen partial pressure. In both areas, higher distribution ratios are achieved under the condition of lower partial pressure of CO_2.

为了估计碳酸钠基于碳酸钠和熔融铜D之间的分布> -co_2 -seo_2 co_2的各个股份下的凹槽在1> n（] sygtoreq。[）a>/（n_ <a> +n_ <se>）的组合范围内，n：moles的数量} “ - 铝菌作为固体电物质。和熔融铜，以及（3）炉渣中co_2的溶解度测量值。基于炉渣和熔融铜habe habe teclienction作为co_2 and oxygen和oxygen par tial压力的函数，以及在1423 K和1523 K的温度达到了较高的分布比，而CO_2的较低压力为1的氧气。在相对高的氧气下，对氧气的分布比在两个区域的氧气中增加了两个不同的氧气。 。

项目成果

H.FUKUYAMA, E.WADA, T.FUJISAWA and Ch.YAMAUCHI: ""Thermodynamics of NaO_<0.5>-CO_2-FeO_<1.5> Slag"" Journal of the Japan Institute of Metals. Vol.57. 1149-1157 (1993)

H.FUKUYAMA、E.WADA、T.FUJISAWA 和 Ch.YAMAUCHI：“NaO_<0.5>-CO_2-FeO_<1.5> 渣的热力学”，日本金属学会杂志。

福山博之: "NaO_<0.5>-CO_2-SnO_2系スラグの熱力学と本系スラグ-溶銅間のSnの分配比の推算" 日本金属学会誌. 57. 905-913 (1993)

Hiroyuki Fukuyama：“NaO_<0.5>-CO_2-SnO_2系统炉渣的热力学以及该系统炉渣与熔融铜之间的Sn分配比的估算”日本金属学会学报57. 905-913（1993）。

福山博之: "溶銅中のFe-酸素間の相互作用係数とNaO_<0.5>-CO_2-FeO_<1.5>系スラグ-溶銅間のFeの分配比" 日本金属学会誌. 58. 176-181 (1994)

Hiroyuki Fukuyama：“铜熔液中Fe与氧的相互作用系数以及Fe在NaO_<0.5>-CO_2-FeO_<1.5>体系炉渣与熔铜之间的分配比”日本金属学会学报58. 176-181（ 1994）

福山 博之: "Na_2OーSb_2Om,Na_2OーAs_2Om系溶融スラグのCO_2溶解量とSbとAsの賦存状態" 日本金属学会誌. 55. 1322-1330 (1991)

Hiroyuki Fukuyama：“Na_2O-Sb_2Om、Na_2O-As_2Om熔渣中CO_2的溶解量和Sb和As的状态”日本金属学会学报55. 1322-1330（1991）。

H.FUKUYAMA, T.FUJISAWA and Ch.YAMAUCHI: ""activities in NaO_<0.5>-CO_2-SbO_m Slag and Estimation of Distribution Ratio of Sb between the Slag and Molten Copper"" Journal of the Japan Institute of Metals. Vol.57. 521-526 (1993)

H.FUKUYAMA、T.FUJISAWA 和 Ch.YAMAUCHI：“NaO_<0.5>-CO_2-SbO_m 熔渣中的活性以及熔渣和熔铜之间 Sb 分配比的估计”，日本金属学会学报。