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采用自制的结晶器模拟装置,研究了不同碱度无氟渣的传热情况,同时获得了实验条件下的凝固渣膜,并运用差热分析及X射线衍射等分析手段,研究了不同碱度无氟渣的结晶性能和结晶矿相。结果表明,在浸入渣液的前30 s内碱度变化对无氟渣渣膜传热的影响较为显著,随碱度增加,热流密度先升后降,在碱度为1.3时,达到峰值;析出的主要结晶矿物为硅硼酸钙或硼硅酸钙,碱度变化对析出矿物的种类没有太大影响;在等渣膜厚度的情况下,结晶质渣膜比玻璃质渣膜的传热要缓慢。
The self-made mold simulator was used to study the heat transfer of non-fluoridated slag with different alkalinity. At the same time, the coagulated slag film was obtained under the experimental conditions. Differential thermal analysis and X-ray diffraction analysis were used to study the effects of different alkalinity Non-fluoride slag crystallization and crystalline mineral phase. The results showed that the change of alkalinity in the first 30 s immersed in the slag had a significant effect on the heat transfer of the slag without fluoride residue. With the increase of the alkalinity, the heat flux first increased and then decreased, reaching the peak value at the alkalinity of 1.3. The main crystal minerals are calcium borosilicate or calcium borosilicate. Alkalinity changes have little effect on the type of the precipitated minerals. In the case of equal thickness of slag, the heat transfer of crystalline slag film is higher than that of glassy slag film slow.