CAJ | 학술논문

结合富氧底吹熔池熔炼机理模型和 Cu-Fe-S-O-SiO2系氧势?硫势热力学优势图，研究底吹熔炼过程中的多相平衡状态及炉内不同空间位点的氧势?硫势分布规律。结果表明：铜富氧底吹熔池熔炼是烟气?炉渣?铜锍三相共存体系，随着连续加料、连续鼓氧及放渣和放锍操作的进行，体系远未达到平衡，而是处于动态的非稳态近似多相平衡状态，炉内不同空间位点的氧势?硫势不同，存在着梯度变化。反应区、分离过渡区及液相澄清区由下到上氧势逐渐降低，而硫势逐渐升高，其中反应区的氧势?硫势差梯度较大，氧和硫的传质较快。通过调节熔炼过程工艺参数，使炉内不同空间位点的氧势?硫势控制在更为合理的范围，可提高底吹熔炼能力。
결합부양저취용지용련궤리모형화 Cu-Fe-S-O-SiO2계양세?류세열역학우세도，연구저취용련과정중적다상평형상태급로내불동공간위점적양세?류세분포규률。결과표명：동부양저취용지용련시연기?로사?동류삼상공존체계，수착련속가료、련속고양급방사화방류조작적진행，체계원미체도평형，이시처우동태적비은태근사다상평형상태，로내불동공간위점적양세?류세불동，존재착제도변화。반응구、분리과도구급액상징청구유하도상양세축점강저，이류세축점승고，기중반응구적양세?류세차제도교대，양화류적전질교쾌。통과조절용련과정공예삼수，사로내불동공간위점적양세?류세공제재경위합리적범위，가제고저취용련능력。
The multiphase equilibrium state and oxygen-sulfur potential distribution rule of oxygen-enriched bottom blowing smelting (BBS) process were investigated by mechanism model of BBS and oxygen?sulfur potential diagram for Cu-Fe-S-O-SiO2 system. The results show that BBS is at the state of dynamic non-steady approximate multiphase equilibrium of gas?slag?matte three phases coexistence system which is far from equilibrium with continuous feeding, injecting oxygen, slagoff and ejecting matte. And the value of oxygen and sulfur potential changes gradually in different locations of furnace. Oxygen potential decreases and sulfur potential increases gradually from bottom to up in reaction region, separation transition region and liquid phase clarification region, and oxygen and sulfur transfers faster in reaction region with larger oxygen?sulfur potential gradient. The capacity of BBS can be improved by reasonably regulating process parameters to control the value in different layers and regions.