Aim\ To study producing method of potash fertilizer (potassium sulfate) withlow chlorine ion

to apply and popularize the technology. Methods\ Use potash muriate and sulfuric acid as raw materials to produce potassium sulfate by solvent extraction. Results\ Through orthogonal experiment the difference analysis under different conditions is obtainad. Conclusion\ The effect sequence of each factor in two step reaction is obtained. The optimal condition of experiment and extraction is determined The potassium sulfates made under optimal technical condition achieved the first class products specified by national standard.