The desliming process plays a key role in mineral processing technology, ensuring efficient particle separation based on their magnetic properties. The article examines the issues arising from the use of traditional magnetic deslimers under elevated slurry temperatures. One of the main drawbacks of existing methods is the decrease in magnetite density as temperature rises, which impairs separation quality and leads to losses of the valuable product. The article explores the physical aspects of this problem and proposes methods for its mitigation, including control of the magnetic field strength to optimize flocculation. It also considers the possibility of upgrading deslimers by replacing permanent magnets with electromagnets, enabling more precise process control. Magnetic field modeling with ANSYS Maxwell software confirms the effectiveness of the proposed solutions. The work’s primary focus is the development of a hybrid intelligent control system for the desliming process. The proposed system consists of three control loops: water supply, electromagnet excitation current, and desliming discharge. Each loop is managed by proportional–integral–derivative regulators, which are automatically adjusted based on data regarding changing slurry parameters and external conditions. Applying these methods can significantly improve the quality of the iron ore concentrate, increase the iron content in the product, reduce losses in tailings, and ensure stable equipment operation under varying environmental conditions.

Keywords: magnetic desliming, flocculator, automated control system, PID controller, iron ore processing, optimal control