关键词: 榴辉岩, 金红石, 石榴子石 , 绿辉石 , 矿物学基因特性, 嵌布粒度 , 选别流程确定

Abstract:  In order to realize the efficient and comprehensive recovery of various useful minerals in eclogite ore with dif ferent mineralogy genetic characteristics，determine the beneficiation process and separation index，the process mineralogy and beneficiation tests had been studied for the eclogite mines from Donghai in Jiangsu province，Rizhao in Shandong prov ince，and Wulan in Qinghai province. The eclogite in the three places could be divided into three types: high phosphorushigh sulfur-high titanium-coarse grained eclogite deposit（Donghai），low phosphorus-high sulfur-low titanium-coarse grained eclogite deposit（Rizhao），high phosphorus-low sulfur-low titanium-fine grained eclogite deposit（Wulan）. The difficulty of en richment of rutile concentrate was determined by the content of TiO₂ in the form of rutile in the raw ore；the process（reverse flotation，electrostatic separation or acid leaching）of rutile impurity removal was determined by the content of impurity phos phorus and sulfur；whether to take the classification and separation process and whether to obtain the coarse-grained concentrate products were determined by the particle size of the main useful minerals. The purity of rutile single mineral and its dissemination relationship with other minerals were the main factors affecting the difficulty of rutile dressing；the primary particle size of garnet and omphacite and the internal fragmentation of minerals were the key factors to affecting whether to obtain coarse-grain garnet and omphacite concentrate；the content and occurrence state of sulfur and phosphorus impurities were the decisive factors affecting the rutile removal process.

Key words: Eclogite, Rutile, Garnet, Omphacite, Mineralogy genetic characteristics, Disseminated Size, Beneficiation process determination