Preparation method of aluminum potassium sulfate

Introduction: aluminum potassium sulfate, colorless crystal or powder No smell, slightly sweet and astringent, astringent In the dry air weathering lost crystal water, dissolved in the humid air flowing water It is soluble in glycerin and water, and the aqueous solution shows acid reaction After hydrolysis, aluminum hydroxide colloid precipitates Then what are the preparation methods of aluminum potassium sulfate? Let's take a look at it with the small safety net of Baibai Aluminum potassium sulfate, colorless crystal or powder No smell, slightly sweet and astringent, astringent In the dry air weathering lost crystal water, dissolved in the humid air flowing water Soluble in glycerin, soluble in water, the aqueous solution shows acid reaction, after hydrolysis, there is aluminum hydroxide gel precipitation Then what are the preparation methods of aluminum potassium sulfate? Let's take a look at it together with the small edition of Baibai safety net 1 The natural alunite processing method is to crush alunite, bake, dehydrate, weathered, steam extract, settle, crystallize and crush alunite to obtain the finished product of aluminum potassium sulfate 2 Bauxite process uses sulfuric acid to decompose bauxite to generate aluminum sulfate solution, then adds potassium sulfate reaction, and then filters, crystallizes, centrifugally dehydrates and dries to produce aluminum potassium sulfate product 3 The product of aluminum potassium sulfate was prepared by recrystallization of crude alum, boiling with water, evaporation, crystallization, separation and drying 4 Aluminum hydroxide is dissolved in sulfuric acid by aluminum hydroxide method, and then added to the measured potassium sulfate solution for heating reaction, and then filtered, concentrated, crystallized, centrifuged, dried to produce the finished product of aluminum potassium sulfate 5 Dissolve 18.37g of potassium sulfate in 70g of water at 100 ℃, and 70.24g of aluminum sulfate (SO4) 3.18h2o in 60g of water at 100 ℃ Mix the two solutions while they are hot, and let the mixture cool down slowly under constant agitation When the solution is cooled to 20 ℃, about 85g of aluminum potassium sulfate dodecahydrate can be obtained 6 Adopt recrystallization method Aluminum potassium sulfate is prepared by dissolving aluminum potassium sulfate in water, purification, impurity removal, filtration, concentration, crystallization, centrifugal dehydration and drying The above is the introduction of the preparation method of aluminum potassium sulfate provided by the small edition of Baibai safety net I sincerely hope it can help you! If you want to know more about food safety, please pay more attention to Baibai safety net bar! Editor in charge: Wu Mengli