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已发表的多是适用性有限的Me—S—O三元系化学位图。全面考察Me—S—O系与Fe—S—O系间的相互作用的Me—Fe—S—O四元系的化学位图、对焙烧过程很重要。根据组合律确定Cu、Ni、Co、Zn等的Me—Fe—S—O四元系中反应的数目。应用相律和对体系中反应平衡计算的综合分析,选用焙烧过程中两主要参数(P_(SO_3)-1/(TK))为坐标、作出了Me—Fe—S—O四元系的化学位图。它能明显示出全硫酸化、选择硫酸化、部份硫酸化、氧化、部份氧化、选择氧化和离解等七种焙烧的条件及其相应的产物。文中简评了Cu、Ni、Co、Zn等的铁酸盐的热力学数据、发现以作者用气体流动法测得的一套数据较为合理。文末也浅谈化学位图在焙烧过程中若干实际应用问题。
Many published works have limited applicability to the Me-S-O ternary chemical map. It is important for the calcination process to thoroughly examine the chemical position of the Me-Fe-S-O quaternary system for the interaction between the Me-S-O system and the Fe-S-O system. The number of reactions in the Me-Fe-S-O quaternary system of Cu, Ni, Co, Zn, etc. is determined according to the combinatorial law. By using the law of phase and the comprehensive analysis of the reaction equilibrium in the system, two main parameters (P_ (SO_3) -1 / (TK)) in the calcination process are selected as the coordinates to make the chemical structure of the Me-Fe-S-O quaternary system bitmap. It clearly shows the seven conditions of calcination, such as total sulfation, selective sulfation, partial sulfation, oxidation, partial oxidation, selective oxidation and dissociation, and their corresponding products. In this paper, the thermodynamic data of ferrite such as Cu, Ni, Co, Zn and so on are briefly reviewed. It is found that the set of data measured by the author with gas flow method is reasonable. At the end of this article, we will also discuss some practical applications of chemical bitmap in the process of firing.