Production process of retarded Portland cement for road base

The invention provides a production process of retarded Portland cement for a road base, which belongs to the technical field of cement production, and comprises the following steps: grinding limestone, clay, iron ore and coal into powder to prepare a cement raw material; firing the cement raw material to prepare cement clinker, carrying out heat preservation on the cement clinker, mixing the cement clinker, gypsum, fly ash and mineral powder, and grinding into clinker powder; arranging a plurality of parts of clinker powder and a plurality of parts of white sugar to form clinker powder layers and white sugar layers, wherein each part of white sugar is uniformly scattered on the clinker powder layer below, so that each white sugar layer is in a molten state and is adhered to the clinker powder layer; and finally, grinding and homogenizing to form the cement product. According to the production process of the retarded Portland cement for the roadbase, the clinker powder layer and the white sugar layer are arra