( 東北大學(xué) 材料與冶金學(xué)院， 沈陽 110004)
摘 要: 介紹了1.35 kA新型泄流式電解槽的制作、 筑爐、 焙燒、 啟動以及電解實(shí)驗(yàn)過程；電解槽陰極表面傾角為10°, 陰極采用TiB2/C； 電解槽采用干式砌筑方法， 焦粒焙燒， 干法啟動； 啟動后進(jìn)入正常生產(chǎn)， 平均電流強(qiáng)度為1.35 kA； 對電解槽進(jìn)行類似實(shí)際操作的加料、 出鋁和陽極升降過程， 連續(xù)運(yùn)行100 h。 結(jié)果表明： 泄流式電解槽運(yùn)行穩(wěn)定， 槽電壓噪聲為9 mV左右； 電解過程所表現(xiàn)出的現(xiàn)象與實(shí)際電解槽完全類似；根據(jù)金屬鋁產(chǎn)出量和在產(chǎn)鋁量計算， 電解效率不低于86%， 接近工業(yè)電解槽； TiB2涂層牢固無損， 對陰極起到了較好的保護(hù)作用； TiB2涂層的損失速度為1.0 g/(h·m2)； 證實(shí)了預(yù)先的理論分析， 證明電解槽的此種結(jié)構(gòu)是合理和可行的。
關(guān)鍵字: 泄流式電解槽； TiB2涂層； 焙燒； 槽噪聲
（ School of Materials and Metallurgy,
Northeastern University, Shenyang 110004, China）
Abstract: For a 1.35 kA new-type drained cathode reduction cell, detailed operations of cell building, packing, baking, starting-up and normal operations were presented. Cathode inclination angle was 10°. TiB2-coated cathode was adopted. The cell was drily built, carbon-particulate baked and drily started up. All the operations of feeding, tapping and voltage adjustment were almost the same as those of commercial cells. After 100 h of continuous electrolysis, it is found that the cell performs rather steadily. Cell noise is about 9 mV and the cell performs exactly like industrial cell. Based on metal production and leftover, current efficiency is not lower than 86% which is approaching that of commercial cells. TiB2 coating is firm without any damage and hence performs good protection for carbon cathode. The dissolution speed of TiB2 into electrolyte is about 1.0 g/(h·m2). Test results not only verify the theoretic analysis beforehand, but also prove the feasibility of such kind of cell structure.
Key words: drained cathode cell; TiB2 coating; baking; cell noise
