湖北某黑云母方解石碳酸岩型铌-稀土矿床,其物质组成复杂多样,选冶困难,一直未大规模地开发利用.通过偏光显微镜、化学分析、电子......

该文从挂篮荷载计算、施工流程、支座及临时固结施工、挂篮安装及试验、合拢段施工、模板制作安装、钢筋安装、混凝土的浇筑及养生......

The flotation of niobite, fersmite, and ilmenorutile was studied using 3 collectors with various concentration and pulp ......

以Fe2O3、Nb2O5和C为原料,采用不同的成份配比及加热工艺固相合成了铌酸铁（Fe Nb2O6）。结合XRD分析,结果表明：升温至1300℃、保温180m......

The effect of several collectors on the niobite synthetized under the condition of varying pH values and dosages were st......