Finely dispersed suspensions are used as intermediate or end products in many processes in the chemical, pharmaceutical, and minerals processing industries. Continuously working decanter centrifuges are often applied for the separation or purification of the resulting suspensions. In order to minimise the experimental effort for dimensioning a centrifuge, mathematical models are required which describe the process adequately. The mathematical description of the cylindrical and conical part is needed to predict the build-up of finely dispersed cake in decanter centrifuges. This article presents a physically based computational model to predict the dynamic behaviour of decanter centrifuges. The method considers settling behaviour, cake consolidation, and sediment transport by means of material functions. The used material functions describe the behaviour of the slurry within the apparatus and are measured with well-established lab-scale centrifuges. Consideration of the cylindrical and conical part in the mathematical model allows for the investigation of the influence of different parameters (e.g. cone angle, length of cone, rotational speed, differential speed, etc.) on the process behaviour of decanter centrifuges. The presented dynamic model is validated by comparison with experimental data for an industrial-scale decanter centrifuge.

精细分散的悬浮液在化学，制药和矿物加工行业的许多过程中用作中间产品或最终产品。连续工作的working析器离心机通常用于分离或纯化所得的悬浮液。为了最小化用于确定离心机尺寸的实验工作，需要数学模型来充分描述过程。需要对圆柱和圆锥形部分进行数学描述，以预测倾析离心机中细分散的滤饼的堆积情况。本文提出了一种基于物理的计算模型来预测de析器离心机的动态行为。该方法考虑通过物料功能来沉降行为，滤饼固结和泥沙输送。所用的材料功能描述了设备内浆料的行为，并使用完善的实验室规模的离心机进行了测量。考虑数学模型中的圆柱和圆锥部分，可以研究不同参数（例如，锥角，锥长，旋转速度，差速等）对de析器离心机过程性能的影响。通过与工业规模倾析器离心机的实验数据进行比较，验证了所提出的动态模型。差速等）对on析器离心机的处理行为的影响。通过与工业规模倾析器离心机的实验数据进行比较，验证了所提出的动态模型。差速等）对on析器离心机的处理行为的影响。通过与工业规模倾析器离心机的实验数据进行比较，验证了所提出的动态模型。