对粒度范围为0.1—40微米的人工合成与天然生成的碳酸钙进行了表面电动势的测定和浮选试验。所用试样形状具有明显的差别。人工合成物料是通过溶液沉淀获得的。所使用的浮选捕收剂为油酸钠与十四烷基硫酸钠。颗粒的形状与表面电动势对浮选效果影响较小。天然生成矿与人工合成矿样的浮选行为之间有些微小的差别。粒度对浮选有影响,但是,最重要的是,当絮凝作用易观察到,浮选效果最好时,明显出现的浮选悬浮液是怎样絮凝的。 Surface electromotive force measurements and flotation tests were performed on synthetic and naturally occurring calcium carbonates with particle sizes ranging from 0.1 to 40 microns. There is a clear difference in the shape of the sample used. Synthetic materials are obtained by solution precipitation. The flotation collector used is sodium oleate and sodium tetradecyl sulfate. The shape of the particles and the surface electromotive force have little effect on the flotation effect. There is a slight difference between the flotation behavior of natural and synthetic minerals. Particle size has an effect on flotation but, most importantly, how the flotation suspension obviously flocculates when flocculation is readily observed and the flotation effect is best.