【摘要】：綜述了固砷礦物臭蔥石的組成與結構性能,及其浸出穩(wěn)定性研究現狀。不同條件下制備的臭蔥石樣品,會因SO42-夾雜和結晶水量變化,具有不同的組成。已提出雙齒雙核和雙齒單核兩種臭蔥石結構模型,兩者是否屬實尚存在爭議。臭蔥石的溶度積介于10~(-21.17)~10~(-25.83)之間波動。在弱酸性(pH 2~6)、氧化條件下,臭蔥石浸出穩(wěn)定性較高,能較好滿足長期堆存要求;而在強酸性或堿性區(qū)域,或在還原性條件下,其浸出穩(wěn)定性較差。
[Abstract]:The composition, structural properties and leaching stability of arsenic-fixing mineral geranite are reviewed. The samples of geranite prepared under different conditions have different compositions due to the change of SO42-inclusion and crystalline water content. Two structural models of geranite, double-tooth binuclear and double-tooth mononuclear, have been proposed. Whether they are real or not is still controversial. The solubility product fluctuates between 10~(-21.17)~10~(-25.83). Under weak acidity (pH 2~6) and oxidation conditions, the leaching stability of scallion is high, which can meet the long-term storage requirements well. However, the leaching stability of scallion is poor in strong acidity or alkaline region, or in reducing condition.
【作者單位】： 中南大學冶金與環(huán)境學院;
【基金】：國家自然科學基金項目(51574285)~~
【分類號】：X758
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本文編號：2176392