An adaptive phasic automatic control system designed to stabilize various parameters of technological processes of concentrating plants is considered. The system adapts to unregulated, unaccounted for in the basic calculation changes in technological parameters.

Energy consumption for drying of concentrates at concentrators is at least 10-15% of all energy costs of mining enterprises, so it is very important to optimally control this process to minimize energy consumption.

In many beneficiation plants, for example, in the beneficiation of iron ores, it is possible to regulate the mass flow rate of cake (load) entering the drying units ....

Widely spread at concentration plants, the process of concentrate drying in rotating drying drums is a very complex object of automatic control. Therefore, the stabilizing automatic control systems (ACS) for these processes are also complex, multi-loop and multiply connected. The article attempts to determine the influence of various factors on the required accuracy of the ACS for drying being created, from the standpoint of the expected economic efficiency of these systems.

The drying drum as an object of automatic control was considered earlier. The main control actions in this system are the temperature and velocity of the drying agent, while the load (the flow rate of cake at the inlet) acts as the main disturbance. On the basis of the analytical synthesis performed, an operating model of the automatic control system (ACS) was built, which successfully passed tests and was accepted for implementation on all drying drums of the concentration plant of the Kovdor Mining and Processing Combine.

The process of drying phosphorite concentrate in a rotating drying drum (length 20 m, inner diameter 2.8 m) as an object of automatic control has been described in detail earlier.

Drying of phosphorite concentrate is carried out in a rotating drying drum, the output of which concentrate should be obtained of a given moisture content: increased moisture content of the concentrate is unacceptable under the technological conditions, overdrying leads to overconsumption of fuel, spraying losses. Therefore, the task of automatic control of the drying process is especially relevant for the enrichment industry. As an object of automatic control the drying process is very complex. It is affected by numerous disturbing influences, some of which (e.g., unorganized air inflow) are uncontrollable.