In the preparative phase for raw meal, the crude raw materials are ground into fine particles of a certain size range that meets the procedural requirements; then, water and other necessary materials are added to form raw balls, the final semi-product of the procedural phase. During this phase, input includes limestone, clay, coal, iron powder, and water contained in the raw materials or added in the procedural line. The phase includes three interior transformative processes: grinding the raw materials, coal pulverization, and the formation of raw balls by adding water to the white ground raw materials. Raw balls are the final product of this phase. In this phase, the ball products account for the majority of the total output, amounting to up to 79.32% (not including water). The main emission of pollutants is dust, which accounts for 0.29% of the total output. This dataset represents the raw meal preparation phase for cement clinker production and includes detailed material flows. Data users should take note that the system boundary encompasses the entire raw meal preparation stage, including grinding. The major outputs and emissions should be accounted for in the inventory phase of the LCA, with ball products encompassing the majority of the total output, and dust emissions accounting for a minor, but noteworthy, proportion. The data is intended for use in the LCA of cement produced by vertical shaft kilns, where implications on environmental impacts, energy consumption, and production scalability are of concern. This dataset is based on a production capacity of 100,000 tons of clinker per year and should be calibrated for LCA studies of cement production facilities with different capacities or technological setups.