Solubility and Activity of Aluminum Chloride in Aqueous Hydrochloric Acid Solutions

摘要

The solubility and the activity of aluminum chloride hexahydrate, AlCl3.6H2O, in aqueous solutions were determined as a part of the Bureau of Mines, U.S. Department of the Interior, research to improve mineral processing technology for recovering alumina from low-grade domestic resources. The results were shown to be useful in leaching nonbauxitic ores for extraction of alumina by changing the solubilities of component salts upon addition of HCl. Simultaneous solubilities of AlCl3, FeCl3, KCl, and NaCl in solutions of HCl-H2O were also determined and their effects on the purity of AlCl3.6H2O crystallized from mixed salt solutions are briefly discussed.