Abstract: A method and apparatus for cooling an electronic application having at least one heat-generating electronic component mounted on a circuit board. A heat transferring heat sink is attached to the circuit board in thermal contact with one heat generating electronic component by first being statically fixed to the circuit board in a stationary position at a specified height above the circuit board, and then by resiliently biasing the component against the heat sink.

Abstract: A flotation concentrate in the form of a water suspension is treated with a reagent that nullifies the effect of previously used collectors. The suspension is filtered, and subjected to a mechanochemical treatment that includes chemical conditioning of the mineral surfaces and producing fresh surfaces by grinding with grinding bodies which additionally provide ions that promote selectivity. Grinding efficiency is controlled by the amount of material fed to the mill. The quantity of pulp flowing to the filter is determined and the supply of collector reagent to the filter and the rotary speed of the mill are regulated in response to the flow values.