本研究對粗氧化鋅做初步浸漬(leachig)實驗之探討，並對純氧化鉛與粗氧化鋅中之純氧化鉛進行浸漬動力學之研究，得知無論是純氧化鉛或粗氧化鋅中之純氧化鉛，其浸漬過程皆符合一階反應動力模式(first order reaction)，計算得到純氧化鉛之反應速率k值為0.025，遠小於粗氧化鋅中純氧化鉛之k值0.35，並以水洗除氯鹽的方式證實，粗氧化鋅中之氯加速硫酸鉛之形成。
　　首先為了證實異質成核之可行性，先以現成之氧化鉛藥品加入硫酸鉛晶種，並以硫酸浸漬後所得硫酸鉛之粗顆粒有增多之趨勢，證實了異質成核之可行性。接著將硫酸鉛加入粗氧化鋅樣品中並以硫酸浸漬，隨著硫酸鉛晶種之數量增加，其過濾性能有改善之跡象。此外，比較同樣重量下兩種不同粒徑之硫酸鉛晶種之異質成核情形，顆粒較細之硫酸鉛晶種因其顆粒小，比表面積較大，與氧化鉛之接觸機會較大，故異質成核機會大，有較好之過濾性。
　　除了加入晶種改變過濾性能之外，改變操作條件也能使過濾效果有所改善：先將粗氧化鋅水洗再浸漬、縮短陳化時間、降低硫酸浸漬劑之濃度、連續加入硫酸等，其過濾比阻抗值皆有明顯下降之趨勢。

The results of leaching kinetics of PbO and PbO among the C-ZnO leaching with sulfuric acid solution were presented . The reaction order with respect to PbO and PbO among the C-ZnO were 1. The reaction rate constant(K) of PbO was 0.025, which was smaller than the reaction rate constant of the PbO among the C-ZnO. It has been demonstrated that the chloride among the C-ZnO could hasten the speed of precipitating PbSO4 by scrubing the C-ZnO with water.
The reality of seeding was improved by using the anglesite seeds while leaching the C-ZnO with sulfuric acid, the size of anglesite sludge was much bigger than the anglesite sludge without seeds within. Effect of the amount and size of the PbSO4 seeds were determined . Increasing amount and decreasing size of anglesite seeds both improve the filtability of the anglesite sludge produced by H2SO4 leaching of Crude zinc oxide.
In addition, cake moisture decreases with increasing scrubing times, Ostwald Ripening, decreasing concentration of sulfuric acid, and slower adding acid rate. Efforts for enhanced anglesite slurry dewatering were focused on altering operation conditions and adding anglesite seeds.

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