SELECTIVE PRECIPITATING BEHAVIOR OF THE BORON COMPONENTS FROM THE BORON SLAGS

Acta Metall Sin

1997, Vol. 33

Issue (9): 943-951 DOI:

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SELECTIVE PRECIPITATING BEHAVIOR OF THE BORON COMPONENTS FROM THE BORON SLAGS

SUI Zhitong;ZHANG Peixin(Northeastern University; Shenyang 110006)

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SUI Zhitong;ZHANG Peixin(Northeastern University; Shenyang 110006). SELECTIVE PRECIPITATING BEHAVIOR OF THE BORON COMPONENTS FROM THE BORON SLAGS. Acta Metall Sin, 1997, 33(9): 943-951.

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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.

Key words: slags bearing boron selective precipitating efficiency of extracting boron computer simulation

Received: 18 September 1997

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