Aluminum sulfate

with the chemical formula Al2(SO4)3 is a white, highly water-soluble compound that, after aluminum oxide, is the second most active aluminum compound, it can be either plain or double salt with potassium, ammonium Or sodium, which is then called aluminum alum. The most important aluminum alumina is the ammonium-containing salt, with the chemical formula NH4Al (SO4) 2. Many people confuse these two materials together and consider them to be different shapes of a product. Aluminum sulfate, depending on the amount of water used to dilute the sulfuric acid, can contain about 32-8 molecules of water in its composition.

  1. Aluminum sulfate properties

      • After dissolving, this compound reacts rapidly with alkaline agents in the water and produces gelatinous deposits of aluminum hydroxide, which, due to its heavy content, causes the solution to settle on the surface of the water, and thus absorbs all particles and impurities. Available in water.


      • Storage and storage conditions of Aluminum sulfatAluminum sulfate due to its low pH and also free acid in the product due to relatively weak corrosion, it is recommended that pipes, fittings and all utensils located adjacent to the aluminum sulfate solution are made of plastic materials, fiberglass, anti-corrosion steel Rust or other resistant materials. When storing, if you want to hold an alum or aluminum crystal, you should consider the cool place for this product, since all the crystals lose their crystalline state when they are pressurized at high temperatures and leachate out of the product. And the crystals stick together. But to keep the powders in place, they should be kept dry, they should not be pressurized; otherwise, the powdered seeds will stick together and form the cloves.


      • Chemical specifications of Aluminum sulfate

  2. Aluminum sulfate applications

    • About 50% of aluminum sulfate is used in paper making and corrugation. Aluminum sulfate is also used to treat water and sewage due to the triviality of aluminum and its high ability to coagulate and flush colloidal particles. Aluminum sulfate due to the combination of aluminum ions with halogens such as chlorine and fluorine and the formation of sediment and helping to remove them from zinc sulfate solution due to soil leaching or zinc concentrate to prevent zinc metal adherence to cathodes in the zinc industry is used. The following can be mentioned in the following areas.
    • Application of aluminum sulfate in various industries

      1. Sugar industry
      2. Paper industry
      3. The canning industry
      4. Textile and glass industry
  3. Aluminum sulfate production process

    • Aluminum sulfate is produced by reacting sulfuric acid with aluminum hydroxide and cooling the melt solution obtained in the cooling ponds. The lower quality aluminum sulfate is produced by the reaction of sulfuric acid with bauxite at 170 ° C and in a coiled and pressure vessel.
    • Different types of aluminum sulfate process
      1. Aluminum Alumina

        By reaction of sulfuric acid diluted with water, with black or black earth, which is very affordable, and the addition of ammonium persulfate to solution and the gradual cooling of the solution produced in polyethylene or crystalline tubes is produced, which Typically, its purity is AL-5-6%, its appearance is a white-colored crystalline rhizome, which is used in some industries, such as perfumes, textile and textile industries. In addition, its chemical formula (Al2 (So4) 3. (NH4) 2So4.24H2O), many people assume it with an aluminum sulfate (Al2 (So4) 3). Also, to determine the purity of AL in aluminum salt solution with An additional ammonium ion often causes the amount of AL purity to be oversold due to overlapping.

      2. Aluminum sulfate

        It is synthesized by the reaction of sulfuric acid with the profit of the aluminum scrap from the factory, and a gray powder with a percentage of AL is found between 6-7%, which includes a high degree of insolubility and a percentage of aluminum sulfate It is between 60% and 70%, and the other is the impurity of other materials. Of course, some industries use these materials because of their low prices and the high purity of their impact on the quality of their products. Like the carton industry.

      3. Aluminum sulfate produced by diluting the sulfuric acid with water, with Jajarm aluminum hydroxide or other aluminum soil mines

        Aluminum sulfate produced by diluting the sulfuric acid with water, with Jajarm aluminum hydroxide or other aluminum soil mines. The material obtained from this type of process is a powdered white matter. with a purity of AL between 8.5 and 9.5 with pH 3. Also, its aluminum sulfate content is between 85 and 95%. Of course, the other kind that some factories produce are used in the same material, but due to the conditions and production processes. they can not increase the temperature and neutralize the produced materials, and they must be discharged early, in which case the purity of AL is 7.5 to 8 But the purity of aluminum sulfate is as high as 85 to 95. This production method is economically viable and economical in quality because of the high working speed and low consumption of aluminum hydroxide.


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