Trial Manufacture of Basicity Sensor for Molten Slag

熔渣碱度传感器的试制

• 批准号: 03555143
• 负责人: NAGATA Kzuhiro
• 金额: $ 4.8万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-03555143/
• 关键词: Calcium Phosphate; Solid Electrolyte; Calcium Sensor; Molten Slag; Activity; Basicity Sensor; Calcium Oxide; Alminium Oxide; カルシウムセンサ

The activity of calcium oxide in molten CaO-Al_2O_3 with 0.55 to 0.73 mo1%CaO was measured during 1573 and 1873K in air by means of the Galvanic cells using 4CaO.P_2O_5 compound as a solid electrolyte. The solid electrolyte is tablet with about 10 mm in diameter and 3 mm in thickness. The electromotive forces of the cells have good reproducibility and the temperature at which the slope of electromotive force charges excellently coincides with the transformation temperature written in the phase diagram of CaO-Al_2O_3 system. The activity of CaO deviates from the Raoulian atandard and that of Al_2O_3 calculated by the Gibbs-Duhem equation also deviates from the Raoulian atandard.The stable electromotive force of the Galvanic cell using a 4CaO. P_<>O_5 solid electrolyte gave the activity of Ca in molten Ca-Ag.The activity of CaO in molten CaO-Al_2O_3 slag equilibrated with molten steel can be thermodynamically determined from two of the activities of Ca, Al, O in the molten steel. The activities of O and Al in molten steel were measured in a steelmaking industry using oxygen and aluminium sensors.In order to examine the equilibrium relation between CaO, Al_2O_3 and ZrO_2, the phase diagram of their elements was experimentally drawn.

在1573和1873K的空气中，用4CaO原电池测定了CaO-Al_2O_3熔体中氧化钙的活度，cao浓度为0.55 ~ 0.73 mo1%。P_2O_5化合物作为固体电解质。固体电解质为片剂，直径约10mm，厚度约3mm。电池的电动势具有良好的再现性，电动势电荷斜率的温度与CaO-Al_2O_3体系相图上的相变温度吻合良好。CaO的活度偏离Raoulian标准，用Gibbs-Duhem方程计算的Al_2O_3的活度也偏离Raoulian标准。使用4CaO的原电池的稳定电动势。P_<>O_5固体电解质给出了熔融Ca- ag中Ca的活性。钢水平衡CaO- al_2o_3熔渣中CaO的活度可由钢水中Ca、Al、O的活度测定。在炼钢工业中，用氧和铝传感器测量了钢液中O和Al的活度。为了检验CaO、Al_2O_3和ZrO_2之间的平衡关系，实验绘制了三者的相图。

项目成果

Kazuhiro Nagata and Jun Tanabe: "Activity of CaO and Al_2O_3 in CaO-Al_2O_3 molten slag measured by the Galvanic cell with 4CaO・P_2O_5 solid electrolyte" Metallurgical Transactions B.

Kazuhiro Nagata和Jun Tanabe：“CaO-Al_2O_3熔渣中CaO和Al_2O_3的活性，通过4CaO·P_2O_5固体电解质原电池测量”冶金汇刊B。

永田 和宏: "Al-Ca-Zr-Tiによる複合脱酸の熱力学" 日本学術振興会製鋼第19委員会鋼中非金属介在物小委員会研究会資料. 7. 23-30 (1992)

Kazuhiro Nagata：“Al-Ca-Zr-Ti 复合脱氧的热力学”日本学术振兴会，第 19 届炼钢委员会，钢中非金属夹杂物小组委员会，材料研究组 7. 23-30 (1992)。

林 幸,永田 和宏: "CaO-Al_2O_3-ZrO_2系融体のCaOの活量測定" 日本金属学会講演概要. 109. 857- (1991)

Yuki Hayashi、Kazuhiro Nagata：“CaO-Al_2O_3-ZrO_2 体系熔体中 CaO 活性的测量”日本金属研究所讲座摘要。 109. 857- (1991)

永田 和宏: "酸化カルシウム基鋼中非金属介在物の熱力学的安定性" 材料とプロセス. 4. 1186-1189 (1991)

Kazuhiro Nagata：“氧化钙基钢中非金属夹杂物的热力学稳定性”材料和工艺 4. 1186-1189 (1991)。

Kazuhiro Nagata and Jun Tanabe: "Standard free energy of formation of CaO-ZrO_2 compounds measured by the Galvanic cell with 4CaO・P_2O_5 solid electrolyte" Metallurgical Transactions B.

Kazuhiro Nagata和Jun Tanabe：“用4CaO・P_2O_5固体电解质的原电池测量CaO-ZrO_2化合物形成的标准自由能”Metallurgical Transaction B.