绿松石废弃料的聚合再生利用

以安徽省马鞍山绿松石废弃料为研究对象,选择与绿松石化学成分相近的磷酸二氢铝及相关辅助材料(如促凝剂、活化剂、渗透剂、消泡剂及分散剂等),采用不同的化学配方,通过热化学聚合反应对绿松石废弃料进行改善处理.利用环境扫描显微镜、X射线粉晶衍射、红外吸收光谱、化学全分析等分析方法,对热聚合处理前、后绿松石的化学成分、晶体结构、矿物成分、表面形貌、宝石学及力学性质进行了综合对比研究.研究表明,热化学聚合反应和热化学硬化作用使绿松石废弃料的工艺和力学性能得以明显改善.热化学聚合反应易导致绿松石晶粒边界溶解络合形成絮凝状结构,有助于改善绿松石坯料的工艺性能,提高其力学强度,但绿松石坯料的化学成分、晶体结构未发生明显改变.

Polymerization Recycling of Wasted Turquoise

Wasted turquoises from Maanshan, Anhui Province, are treated and improved via thermochemical polymerization by hydrogen aluminium of phosphoric acid, which is similar to turquoise in chemical composition, and relevant auxiliary materials (such as congealment accelerator, activator, infiltrator, defoamer and dispersant) with different proportion. Environment scanning electron microscopy, X-ray powder diffraction, infrared absorption spectrum and full chemical analyses are employed to investigate by comparing the composition, crystal structure, mineral composition, surface feature, gemmological and mechanical properties of turquoises before and after thermochemical polymerization. The results indicate that thermochemical polymerization and thermochemical hardening help to enhance the technological and mechanical properties of wasted turquoise. Thermochemical polymerization facilitates dissolving and complexing of the grain border of turquoise crystallines to form flocculated structure without remarkable changes in chemical composition and crystal structure of the master turquoise, but with enhancement of the technological properties and increasing of mechanical strength of the material.