The method involves introducing liquid into the reaction space, and if necessary, mixing it using a space, force of variable direction. If required for liquid is allowed to settle in a space force of constant direction. Before it is subjected to space force of variable direction. The liquid is then completely or partially discharged. The equipment comprises a reaction vessel having a reaction space and an inlet channel whose longitudinal axis is located within the angle made by the extremes of the variable space force directions.
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