Study on dynamic stability of suspension in dense medium cyclone

ABSTRACT

The dynamic stability of dense medium suspension is the premise to ensure the effective separation of mineral particles in the separation equipment. It is usually difficult to directly measure the dynamic stability of the suspension in the separation process of the dense medium cyclone. In this paper, a parameter defined as the density difference value between the underflow and overflow of cyclone is used to characterize the dynamic stability of the suspension in the separation process. Under the conditions of different operating parameters and structural parameters, the influencing factors of the dynamic stability of 1.30–1.60 g/cm³ dense medium suspension are systematically studied. The results show that the parameter value is in the range of 0.20–0.50 g/cm³, which is conducive to the separation of particles. When the suspension density increases, the characteristic value of density difference decreases, the influence of the suspension density, feed pressure, the diameter of underflow and overflow port diameter on the density difference characteristic are also researched. Eventually, the formula for calculating the density difference of the characteristic value of suspension is derived.

KEYWORDS:

• Dense medium cyclone
• suspension
• dynamic stability
• density difference

Acknowledgements

The authors thank anonymous reviewers for fruitful discussion and useful comments.

Disclosure statement

No potential conflict of interest was reported by the authors.

Additional information

Funding

The project was supported by the National Natural Science Foundation of China [Grant No.51604281,51904160 and 51574252], and Fundamental Research Funds for the Central Universities [2022YJSHH22]. This projrct was also funded by Open Foundation of State Key Laboratory of Mineral Processing [BGRIMM-KJSKL-2023-14].