Hydrocyclone Selection Criteria for Beneficiation Application

Date: 2021-08-26     From: Longding     Author: admin

The hydrocyclone selection criteria for beneficiation requires comprehensive consideration of multiple parameters. The application of the hydrocyclone in the grinding field is mainly to realize the classification and separation of ore. The following describes the specific parameters that need to be provided when selecting the hydrocyclone for closed-circuit grinding.

1. Process parameters of hydrocyclones

When the cyclone is used for closed-circuit grinding, the process parameters to be provided include the concentration, viscosity, solid specific gravity, liquid specific gravity, solid content, solid particle density, particle size distribution, processing capacity per unit time, ore feed rate, particle size required for grinding, and the pH of the slurry, etc.

2. Requirement parameters of underflow and overflow

The underflow and overflow required parameters of the cyclone refer to flow, concentration and particle size, including the overflow density or solid content of the cyclone, the underflow density or solid content, circulating load, process control constraints, etc.

3. Design variables of hydrocyclones

The design variables of the cyclone generally include the diameter of the cyclone, the inlet diameter, the diameter of the overflow, and the height of the overflow. The design variables of the cyclone will determine the actual use effect of the cyclone, which is determined by the manufacturer of the cyclone according to the process parameters and other conditions provided by the user.

4. Installation method of cyclone

The commonly used installation methods of cyclones are vertical installation and inclined installation. The vertical installation of the hydrocyclone is suitable for working conditions with large fluctuations in feed materials and large changes in cyclic load, but it has serious wear on the sand settling nozzle. The inclined installation of the hydrocyclone is more suitable for providing constant underflow with variable cyclic load, which can reduce the wear of the sand nozzle, but it performs poorly on the high-concentration circuit.

5. Other reference factors for cyclones

In the design process of the hydrocyclone, the hydrocyclone manufacturer also needs to know the grinding purpose of the user and the subsequent process procedures, so as to better ensure the better recovery of useful minerals in the subsequent process. The design of the hydrocyclone is also affected by the ball mill used in the closed-circuit grinding. For example, the feed rate of the ball mill and the rod mill is constant, the circulating load is constant, and the slurry supply of the cyclone is also constant. Since the mill is the opposite, the feed rate and cycle load are variable, so the slurry feed is also variable.