Production method of dense soda ash in high altitude localities

The invention belongs to the technical field of soda ash production, and particularly relates to a production method of dense soda ash in high altitude localities. The method comprises the process flows of hydration reaction, soda ash calcination, soda ash cooling and sieving, and inspection packing for obtaining the products; the method adopts the process conditions that the mass percent ratio of water to anhydrous sodium carbonate during the hydration reaction is 31 to 37:100; the temperature of the hydrate water is 45 to 60 DEG C; the temperature of the outlet air of a hydrator is 85 to 89 DEG C; during the soda ash calcination, self return soda ash calciner equipment is adopted for the soda ash calcination; and during the soda ash cooling and sieving, boiling soda ash cooling machine equipment is adopted for the soda ash cooling. The method is totally suitable for the production application of the soda ash calcination in high altitude localities, the production conditions of thermonatrite are effectively