the present disclosure relates to a process for recycling aqueous sludge and / or waste , comprising : adding , in a dry process cement production line , the aqueous sludge and / or waste into a raw material or into a vertical mill simultaneously with the raw material , and mixing and grinding the raw material and the aqueous sludge and / or waste in the vertical mill to prepare a raw material powder containing the aqueous sludge and / or waste , wherein the water content in the resulting mixture is adjusted to be within the range from 3 % to 15 % by weight , so that the comprehensive water content and material plasticity of the mixture in the vertical mill can be adjusted , and then calcining the obtained raw material powder containing the aqueous sludge and / or waste into cement clinker by a conventional means ; or mixing and grinding coal briquettes and the aqueous sludge and / or waste to prepare pulverized coal containing the sludge and / or waste , so that the water content and plasticity of the coal can be adjusted and combustion performance of the coal can be improved , wherein the adding amount of the aqueous sludge and / or waste range from 1 % to 30 % by weight of the coal briquettes . the present disclosure also provides a cement raw material powder and a pulverized coal prepared by said process .