NOVELTY - Manufacturing potassium sulfate fertilizer and specific cement using potassium-enriched rock, separating potash fertilizer, and preparing the separated slag into specific cement, comprises e.g. crushing potassium-enriched rock, limestone, barite and fluorite, pre-homogenizing, grinding into a fineness of 200 meshes and homogenizing, calcining to obtain clinker dust, adding water, incubating, centrifuging to separate, drying to obtain potassium sulfate, and drying solid as cement mixed material, cooling resulting clinker, adding gypsum powder, grinding, checking and packaging to obtain cement.    USE - The product (potassium sulfate fertilizer and specific cement) is used as radiation-resistant cement and white cement in resisting radiation and decoration and non-structural engineering sites (claimed).    ADVANTAGE - The method provides high potassium sulfate output ratio; consumes less energy; can separate by-product; requires less investment and is easy to be industrialized; and solves the difficulty in processing tailings, which causes environmental pollution.    DETAILED DESCRIPTION - Manufacturing potassium sulfate fertilizer and specific cement using potassium-enriched rock, separating potash fertilizer, and preparing the separated slag into specific cement, comprises (i) carrying out material preparation by: providing potassium- enriched rock (dipotassium oxide-aluminum oxide-silicon dioxide(K2O.Al2O3.6SiO2), limestone (calcium carbonate), barite (barium sulfate), and fluorite (calcium fluoride) in a weight ratio of 37-43:38-45:16-22:1-2, (ii) mixing the potassium-enriched rock, limestone, barite, and fluorite respectively, crushing to a fineness of 20 mm, storing and pre-homogenizing, (iii) grinding: placing the prepared material in milling machine of vertical grinder for mill grinding, then grinding into a fineness of 200 meshes and homogenizing to obtain the raw material, (iv) calcining the raw material obtained in the step (iii) at 1350-1400 degrees C to obtain clinker dust, (v) collecting the step (iv) obtained the clinker dust from the kiln tail, adding water to dissolve, where the ratio of material and water is 1:1, incubating at 100-120 degrees C for 10 minutes, then centrifuging to separate, drying the resulting solution to obtain potassium sulfate, and drying the separated solid as cement mixed material, and (vi) cooling the resulting clinker, adding 1-3.5% gypsum powder, grinding to 0.08 mm sieve, checking the fine material and packaging to obtain the specific cement.