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中国非金属矿工业总公司受国家建材局的委托,于1990年5月8日在北京市主持召开国家建材局地质研究所选矿应用室昂志等人承担的《霞石正长岩选矿工艺和应用研究》技术鉴定会,并通过了鉴定。国内选矿界专家毛钜凡、李毓康、崔林等参加了鉴定会。霞石正长岩开发利用的成功填补了我国
China Non-metallic Mining Industry Corporation entrusted by the State Bureau of Building Materials, in May 8, 1990 in Beijing, presided over the National Institute of Building Materials Institute of Geology and Mineral Processing Application Room Ang Zhi, who bear the “nepheline syenite ore beneficiation process and application Research ”technical appraisal, and passed the appraisal. Mao Zuofan, Li Yukang, Cui Lin and other experts from the domestic mineral processing industry participated in the appraisal meeting. The success of nepheline syenite development and utilization has filled our country