3He K,Wang X R,Fernandez LJA.Potassium Sulfate from Gypsum and Potassium Chloride in Ammonium Solution[J].Ingenieria Quimica,1999,31(354):153-158.
4Wang Q M.Synthesis Utilizing the Glauber's Salt Resource of Salt Field to Produce K2SO4[J].The Salt of Sea Lake and Chemical Engineering,1998,27(4):4-8.
5Fernandez LJA,Int A W.Double Decomposition of Gypsum and Potassium Chloride Catalyzed by Aqueous Ammonia[J].Chem.Eng. J.,1982,(24):53-61.
6Bark M Y,Zatout A A,Mouhaned M A.Orthoclase,Gypsum and Limestone for Aluminum Production and Potassium Salt[J].Int. Ceram.,1979,28(1):34-35.
7Dasgupta A.Fertilizer and Cement from Indian Orthoclase[J]. Indian Technol.,1975,13(8):359-361.