本文選題：RO相 + 氣力分選�。� 參考：《建筑材料學報》2017年03期

【摘要】：針對3種粉磨設備所制備的5種鋼渣粉,從粉體粒度分布均勻性和RO相的粒級分布差異性角度,探索了適合RO相氣力分選的鋼渣粉磨方式.結果表明:5種鋼渣粉粒度分布均符合RRB(Rosin-Rammler-Bennett)方程和分形維數(shù)方程;均勻性系數(shù)n和分形維數(shù)D顯示鋼渣粉粒度越粗均勻性越好,RO相的密度分離效應就越高;粉磨設備制備鋼渣粉均勻性次序為立磨輥壓機球磨;當鋼渣粉在-55μm粒級時,5種鋼渣粉中RO相含量隨粒度增大而提高,表現(xiàn)出RO相的粒度分離效應,當鋼渣粉在+55μm粒級時,RO相含量較低且隨粒度增大而降低,大部分RO相與脈石以礦物集合體形式存在;擠壓法破碎對RO相選擇性解離作用比沖擊法強,鋼渣粉粗粒級中RO相含量高;根據(jù)鋼渣粉篩分分選效果,粉磨方式優(yōu)選次序為輥壓機立磨球磨.工業(yè)化RO相氣力分選作業(yè)中并存有密度分離效應和粒度分離效應,且前者作用更大.
[Abstract]:According to five kinds of steel slag powder prepared by three kinds of grinding equipment, from the point of view of the uniformity of particle size distribution and the difference of the size distribution of RO phase, the grinding method suitable for the pneumatic separation of RO phase was explored. The results show that the particle size distribution of 5 kinds of steel slag powder accords with RRBB Rosin-Rammler-Bennett-Bennett-equation and fractal dimension equation, and the uniformity coefficient n and fractal dimension D show that the coarser uniformity of steel slag powder is, the higher the density separation effect of RO phase is. The homogeneity of steel slag powder prepared by grinding equipment is in the order of vertical mill roller press ball milling, when the steel slag powder is in the grade of -55 渭 m, the content of RO phase in 5 kinds of steel slag powder increases with the increase of grain size, which shows the effect of the separation of RO phase. When steel slag powder is at 55 渭 m, the content of RO phase is lower and decreases with the increase of grain size, most of RO phase and gangue exist in the form of mineral aggregates, the selective dissociation of RO phase by extrusion crushing is stronger than that by impact method. The content of RO phase in coarse grain grade of steel slag powder is high, and according to the screening and sorting effect of steel slag powder, the optimal selection order of grinding method is roller press vertical milling ball mill. The density separation effect and particle size separation effect exist in the industrial RO phase separation operation, and the former has a greater effect.
【作者單位】： 西安建筑科技大學材料與礦資學院;
【基金】：陜西省自然科學基礎研究計劃項目(2016JM5010) 山西省科技創(chuàng)新項目(2013101038) 陜西省教育廳專項科研計劃項目(15JK1396)
【分類號】：TQ172.44

【參考文獻】

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本文編號：1810507