本文叙述了铜—镍选矿厂尾矿自然沉降和絮凝沉降规律的研究。通过标准的试验室分批沉降试验,确定了各种条件下的沉降速度。试验发现,絮凝可以显著改善沉降过程,但是其效果取决于几方面因素,例如:给入的矿浆浓度,絮凝剂的种类和用量,矿浆 pH 值,絮凝剂与尾砂混合的程度以及在压缩期间搅拌的使用。结果表明,对于在给定条件下的沉降过程,底流矿浆浓度(P)和沉降时间(t)附合关系式:P=k·t~n,式中 k 和 n 为常数。最后叙述了利用该关系式确定浓密机尺寸的程序。 This paper describes the natural settlement and flocculation and sedimentation of copper-nickel concentrator tailings. The sedimentation rate under various conditions was determined by a standard laboratory batch subsidence test. It has been found that flocculation can significantly improve the sedimentation process but its effectiveness depends on several factors such as the concentration of pulp fed, the type and amount of flocculant, the pH of the pulp, the degree of mixing of the flocculant with the tailings, Stirring use. The results show that for the sedimentation process under given conditions, the underflow slurry concentration (P) and settling time (t) are related by the equation: P = k · t ~ n, where k and n are constants. Finally, the procedure to determine the thickener size using this relation is described.