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題名 | 利用鉭鈮礦制備CaO-Al₂O₃-SiO₂系統微晶玻璃=CaO-Al₂O₃-SiO₂System Glass-ceramics Prepared from Nb-Ta Tailings |
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作者 | 程金樹; 何峰; 謝俊; | 書刊名 | 工程科技與教育學刊 |
卷期 | 7:2 2010.04[民99.04] |
頁次 | 頁250-257 |
分類號 | 440.33 |
關鍵詞 | 微晶玻璃; 鉭鈮尾礦; 燒成工藝; Glass-ceramic; Niobium tantalum tailings; Sintering technology; |
語文 | 中文(Chinese) |
中文摘要 | 以鉭鈮尾礦爲主要原料,利用燒結法制備出了微晶玻璃材料。引用CaO,ZnO和BaO對玻璃的成分進行調節。利用XRD、SEM等對微晶玻璃的結構進行了研究。研究結果表明:在所制備的微晶玻璃材料中,析出了β-矽灰石晶體。而CaO含量的增加會促進β-矽灰石晶體的析出。玻璃顆粒的燒結是在液相的參與下完成的。晶化溫度的提高有利於β-矽灰石晶體的析出。利用“二步法”工藝制備的微晶玻璃的密度與質量優於利用“一步法”工藝制備的微晶玻璃。 |
英文摘要 | Particle sintering technology was used to transform Niobium Tantalum Tailings (Nb-Ta tailings) into glass ceramic products. CaO, ZnO and BaO were used to adjust the composition of the glass. β-wollastonite was found present as the major crystalline phase in all treated samples. With the CaO increasing, the intensity of crystal diffractive peaks is also increasing. The formation of β-wollastonite crystal can be accelerated by the increasing of CaO. The sintering is processed under the participation of liquid phase, and increase of sintering temperature does a great favor on descending the liquid phase viscosity of glass particles, which consequently is available for sintering. The density and sintering quality of the samples prepared by two-step sintering are higher than that of one-step sintering. With the sintering temperature increasing, the surface of the samples become better and have beautiful luster. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。