本文以Na2O-CaO-SiO2-Al2O3-P2O5（NCSAP）系为研究对象，设计出主晶相为Na2Ca2Si3O9和CaSiO3的玉石型微晶玻璃。首先，利用整体析晶法制备了可切削性良好、半透明的玉石型微晶玻璃，微晶玻璃的最佳热处理工艺为750℃/4h+850℃/2h。同时，系统地研究了NCSAP体系玻璃的相变。在恒温相变过程中，通过测定NCSAP玻璃的“温度-时间-转变”的关系，得到包括非均匀型相变和均匀型相变的双C曲线。增加Na2O的含量，双C曲线变为单C曲线，且单C曲线向左下方移动，玻璃的相变机制由非均匀型相变转变为均匀型相变。在固相转变过程中，对于含有15mass%Na2O的玻璃，在1150-1250℃内，β-CaSiO3转变为α-CaSiO3；对于含有17%massNa2O的玻璃，在950℃-1050℃范围内，β-CaSiO3 转变为Na2Ca2Si3O9，在1050℃-1150℃，Na2Ca2Si3O9转变为Na2+2xCa2-xSi3O9固溶体。其次，研究了Na2O、SiO2、Al2O3、P2O5各组成含量变化及Na2O与K2O的替换对NCSAP玻璃析晶行为的影响，分析了K2O和Al2O3对微晶玻璃力学性能的影响。增加Na2O的含量可促进微晶玻璃整体析晶，K2O等量替换Na2O有利于降低微晶玻璃的孔隙率。增加Al2O3的含量使微晶玻璃的晶粒尺寸减小。当0%≤P2O5＜2.0%，玻璃以表面析晶为主，当2.0%≤P2O5＜4.0%，玻璃以整体析晶为主。同时增加Na2O，Al2O3与P2O5的含量并用K2O等量替换Na2O，可以得到细小的等轴晶粒，同时降低微晶玻璃的孔隙率，显著提高微晶玻璃的强度。然后，研究了工艺对NCSAP玻璃析晶行为的影响。利用烧结法制备了NCSAP微晶玻璃并分析了P2O5对NCSAP微晶玻璃烧结行为的影响，当1.8％≤P2O5 ≤3.6％，可得到表面光滑平整的微晶玻璃，最佳烧成制度1000-1050℃/60 min。在连续冷却过程中，随冷却速率的增加，玻璃析出α-CaSiO3、β-CaSiO3 和Na2Ca2Si3O9晶体的温度降低，且CaSiO3和Na2Ca2Si3O9的晶粒尺寸逐渐减小。最后，将NCSAP体系应用到利用高钙废渣制备微晶玻璃中，选取磷渣制备了NCSAP微晶玻璃，磷渣在微晶玻璃中的使用率达到72%。

In this paper, the system of Na2O-CaO-SiO2-Al2O3-P2O5 (NCSAP) has been taken as the object of study, the jade glass-ceramics in which the dominant crystalline are Na2Ca2Si3O9 and CaSiO3 has been designed. Firstly, the machinable and translucent glass-ceramics was prepared by volume crystallization. The preparation technological parameter of the NCSAP glass-ceramics has been systematically studied, and the optimal heat treatment schedule is obtained, which is 750℃/4h + 850℃/2h. At the same time, the good machinability and translucent glass-ceramics was obtained through the optimized ingredient and heat treatment schedule. Secondly, the mechanism and dynamics of phase transition on NCSAP glass-ceramics was investigated, and the dynamics curve of constant temperature and continuous cool of glass-ceramics was formulated. The double C curvec including the inhomogeneous and homogeneous phase transiton has been obtained through determining the ‘temperature - time- transformation’ relations of NCSAP glass. When the Na2O content was increased, the double C curve becomes the single C curve, and the single C curve moves toward left underneath. In the non-isothermal heating process, for the 15%Na2O glass,β-CaSiO3 transforms into α-CaSiO3 in the range of 1150℃-1250℃; For the 17%Na2O glass, β-CaSiO3 transforms into Na2Ca2Si3O9 in the range of 950℃-1050℃, Na2Ca2Si3O9 transforms into Na2+2xCa2-xSi3O9 solid solution in the range of 1050℃-1150℃.Thirdly, the effects of P2O5，Na2O，K2O and Al2O3 on crystallization behavior and K2O and Al2O3 on performance of glass-ceramics were systematically investigated. When the P2O5 content is range of 0%-2.0%, the dominant crystallization mechanism is surface crystallization, when the P2O5 content is range 2.0%-4.0%, the dominant crystallization mechanism is volume crystallization. Na2O can promote the volume crystallization of glass-ceramics. K2O is advantageous in reduces the porosity of glass-ceramics. Al2O3 can causes the grain size to reduce. The combined actions of P2O5，Na2O，K2O and Al2O3 obtain the tiny equiaxial grain, simultaneously reduces the of porosity of glass-ceramics, obviously enhances the the intensity of glass-ceramics.Fourthly, the P2O5 influencing the sintering behavior of the NCSAP glass-ceramics was investigated. As a result, the preferential P2O5 content was in the range of 1.8%-3.6％, in which glass-ceramics with a smooth and flat surface could be obtained by sintering at 1000-1050 ℃ for 60min.The onset devitrous temperature of α-CaSiO3, β-CaSiO3 and Na2Ca2Si3O9 decrease with the increase of cooling rate in the continual cool process, and the grain size of CaSiO3 and Na2Ca2Si3O9 reduces gradually.Finally, the NCSAP system was applied in preparation of glass-ceramics from high calcium waste slag as the raw materials, and the NCSAP glass-ceramics were prepared from phosphorus slag, the utilization ratio of phosphorus slag in glass-ceramics has achieved 72%.