【摘要】 变温过程硼渣中含硼组分的析出表现为晶态与非晶态两种形态：形成含棚玻璃相时分离困难，以遂安石（2MgO·B2O3）晶相拆出时硼提取率明显提高通过调整渣的化学组成，控制热处理温度和有效添加剂等因素可以使渣中则组分以遂安石为主相存在，实现选择性析出对析出相显微形貌进行SEM动态原位跟踪，再配合分形理论与计算机模拟的研究方法，证实渣中硼组分析出过程涉及分相和折晶两个步骤分相符合不稳分解机理，2MgO·B2O3枝晶生长遵循扩散限制凝聚模型更多还原

【Abstract】 The precipitating morphology of the boron components in the boron slags were in both crystallized and amorphous forms during the solidification of the molten salgs.The efficiency of extracted boron (EEB) from the former slag, crystal form, was obviously higher than that from the later slag. The precipitating behavior and morphology of the boron components in the slags can be artificially controlled. The Suanite(2MgO·B2O3) will exist as main phase by changing chemical composition, temperature of heat-treatment and addition,that is the selective precipitating. SEM in situ observation of the heating sample and the computer simulation combined with fractal description confirmed that the precipitating processes of the molten slags consists of the separation of amorphous phase through spinoda1 decomposition and of the precipitating of Suanite by the model of diffusion limited aggregation.更多还原