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| A NEW POLYMERIZATION MODEL APPLYING TO LIQUID SILICATE SYSTEM CaO-SiO_2 |
| WANG Zhichang (Shanghai Institute of Nuclear Research; Academia Sinica); ZHOU Jicheng; CHENG Zhaonian (Shanghai Institute of Metallurgy; Academia Sinica) |
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Cite this article:
WANG Zhichang (Shanghai Institute of Nuclear Research; Academia Sinica); ZHOU Jicheng; CHENG Zhaonian (Shanghai Institute of Metallurgy; Academia Sinica). A NEW POLYMERIZATION MODEL APPLYING TO LIQUID SILICATE SYSTEM CaO-SiO_2. Acta Metall Sin, 1986, 22(5): 69-77.
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Abstract The use of the s-regular anion sub-lattice assumption instead of the ideal anion sub-lattice one in the Whiteway, Smith and Masson (WSM) model leads to a four-parameter branched chain polymerization model for the binary silicate melts. For most slags investigated so far, three interchange energy parameters in the present model, W_(12), W_(o1) and C (C=W_(o2)-W_(o1)), could be assumed to be zero; then it becomes an one-parameter model, i.e. the WSM model. For the CaO-SiO_2 melts, the three above-mentioned parameters could be assumed to have the same value that does not equal zero. The new model is then converted into a twoparameter model. With the interchange energy parameter W_(12)/RT=-0.023 and the thermodynamical equilibrium constant K_(11)~0=0.0044 for the reaction SiO_4~(4-)+SiO_4~(4-)=Si_2O_7~(6-)+O~(2-) the new model is in better agreement with the experimental data on the activity in the CaO-SiO_2 melts at 1600℃ in the region of 0.412≤N_(SiO_2)≤0.450.
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Received: 18 May 1986
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