Ways to reduce the ferromagnetic fluid loss while separating non-ferrous metals in recycling vehicles

Abstract

Introduction. In order to increase sales, the modern automotive industry renovates model series more and more intensively, which leads to the reduction of the vehicles life. In this regard, the solution of old vehicles recycling problem is of great importance, as it allows to reduce environmental pollution and significantly save resources. Another important task is to improve the efficiency and productivity of the process of separating non-ferrous metals while recycling vehicles.

The purpose of the study was to reduce the loss of ferromagnetic fluid (FMF) by improving the separation process and regeneration of ferrocolloid as well as developing more advanced methods based on the principle of metals separation at the water-МF interface, as well as the use of the centrifugal force for regenerating ferrocolloid.

Methodology and research methods. The article deals with the issues related to the development of new technology and equipment, as well as the introduction of modern methods in the practice of separating nonferrous metals. One of such methods is magnetic fluid separation (MFS). Currently, the use of MF for the separation of non-ferrous metals is rather limited due to their high cost and significant consumption of FMF.

Scientific novelty and results. The paper presents: a method for reducing ferrocolloid losses during particle separation by creating a hydration shell; formulas were derived to determine the efficiency of magnetic fluid regeneration in the separation of metals; a method for regenerating FMF by imposing centrifugal forces was developed which allowed to regenerate up to 91.9% of ferrocolloid removed by the separating material.

Practical significance. The solution of the issues referred to reducing FMF losses and its regeneration will significantly improve the technical and economic performance of enterprises involved in the disposal of vehicles.