A method of agglomerating mineral materials by mixing them with fuel and then water and sintering, including the steps of continuously monitoring the process of agglomeration by measuring the permeability of the mixture before sintering and regulating the supply of water to ensure an appropriate permeability of the mixture to be sintered for the highest speed of sintering and for the desired quality of the agglomerate, said regulation of water supply process as a whole and of foreseeable disturbances in the process.