格鲁吉亚和哈萨克斯坦天然钨铈镧矿的热酸处理

Vladimer Tsitsishvili, N. Dolaberidze, N. Dzhakipbekova, N. Mirdzveli, M. Nijaradze, Z. Amiridze, B. Khutsishvili
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引用次数: 0

摘要

文章探讨了对格鲁吉亚 Tedzami 矿床 Rkoni 地块的天然沸石(含 80% 的金绿泥石和 10% 的茶皂石)和哈萨克斯坦 Chankanay 矿床的天然沸石(含 70% 的金绿泥石和茶皂石混合物)进行热处理和酸处理后导致其结构和性质发生变化的过程。研究描述了所研究的天然沸石的初步热处理对重量损失的影响、在随后的酸处理过程中的脱胶和蜕变过程以及最终产品的吸附特性。研究表明,非变质样品的质量损失极小,脱铝和钠离子参与脱碳过程的速度明显减慢,对水和苯的吸附能力随着煅烧温度的升高而急剧下降;所有这些影响在含乌兰德石的 Rkoni 凝灰岩中都非常明显,而在耐酸性较强的 Chankanay 沸石中则表现较弱。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Heat-acid treatment of georgian and kazakhstani natural heulandite-chabazites
The article considers the processes leading to a change in the structure and properties as a result of thermal treatment followed by acid treatment of natural zeolites from the Rkoni plot of the Tedzami deposit, Georgia, containing up to 80% of heulandite and 10% of chabazite, and from the Chankanay deposit, Kazakhstan, containing up to 70% of heulandite-chabazite mixture, selected for the creation of new bactericidal zeolite filter materials for purification and desinfection of water from various sources. The influence of preliminary heat treatment of the studied natural zeolites on weight loss, the processes of dealumination and decationization during subsequent acid treatment, and the adsorption properties of the final products is described. It has been shown that mass loss is minimal for amorphized samples, dealumination and the participation of sodium ions in the decationization process slow down significantly, and the adsorption capacity for water and benzene sharply decreases with increasing calcination temperature; all these effects are clearly pronounced for heulandite-containing Rkoni tuff, and for the more acid-resistant Chankanay zeolite they are manifested to a lesser extent.
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