Effect of factors on the extraction of boron from slags

被引：43

作者：

Zhang, PX

Sui, ZT

机构：

[1] Non-Ferrous Metallurgy Department, Northeastern University, Shenyang

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS B-PROCESS METALLURGY AND MATERIALS PROCESSING SCIENCE | 1995年 / 26卷 / 02期

关键词：

D O I：

10.1007/BF02660977

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of slag composition, additive agent, and heat treatment on the crystal morphologies, the crystallization behavior, and the efficiency of extraction of boron (EEB) from slags were investigated by chemical analysis, polarization microscope, and X-ray diffraction (XRD) as well as differential thermal analysis (DTA). The EEB varied with the slag composition. The farther the slag composition deviated from the line between 2MgO . B2O3 and 2MgO . SiO2 in the MgO-B2O3-SiO2 system, the lower the EEB. The EEB was directly related to the precipitating characteristics of the boron component in the slags. The EEB was high if the boron component existed in the form of a crystalline phase, otherwise the EEB was low when boron was in the form of an amorphous phase. The EEB from MgO-Al2O3-CaO-B2O3-SiO2 slag varied with the temperature of heat treatment; the highest EEB appeared at 1100 degrees C. The EEB and the crystallinities were increased by addition of TiO2 and MO(x) (M = Mg, Ca, Fe, Si). The effect of MO(x) was more notable than that of TiO2.

引用

页码：345 / 351

页数：7

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