霞石正长岩综合利用初探

Preliminary study of nepheline syenite comprehensive utilization

随着我国氧化铝产能扩张,铝土矿资源日益短缺,针对我国铝土矿资源状况,应积极研究利用非铝土矿含铝资源霞石正长岩的氧化铝生产工艺,为今后利用新的含铝资源作技术储备。根据黑龙江密山霞石正长岩特点,设计了矿石综合利用方案,生产产品包括氧化铝、碳酸钾、水泥、硅肥。并针对采用碱石灰烧结法处理矿石能耗高的缺点,提出了节能措施,如采用干法烧成、半干法生产水泥,废气循环使用等先进的生产技术和合理的工艺流程,降低了能耗,使霞石正长岩的综合利用具有较好的经济效益和社会效益。

Domestic alumina capacity ballooning exposes growing shortage of bauxite resource,and the circumstance urges active study and use of nephline syenite in alumina process,forwarding innovative materials of technical reserves.The paper presents a plan of comprehensive utilization corresponding to characteristics of the nepheline syenite originating in Mishan,Heilongjiang,and the diversified products include alumina,potassium carbonate,cement and silicon fertilizer.Moreover,the paper comes up with energy saving...