Before Sodium Carbonate ash, it was discovered in ancient times that certain seaweeds, when dried and burned to ashes, contained alkali, which could be extracted with hot water and strained to yield a brown lye solution for washing. A large amount of natural alkali comes from minerals, with underground burial or alkaline water lakes as the main source. The highest grade of natural alkali ore exists in the sedimentary layer, which is widely distributed. The earliest invention of synthetic soda ash method is the end of the 18th century, France Lubran with manganese nitrate plus limestone and coal at high temperature reduction and carbonation, to Na2CO3-containing crude products - black ash, after leaching, evaporation, refining, re-crystallization, drying, to obtain the purity of about 97% of the heavy soda ash. 1861, Belgium, E. Solvay solo invented the soda ash and patented. Due to the protection of technical secrets has not been able to wide range of applications, the 1920s only breakthrough from the United States, especially China's famous chemical experts Hou Deping in 1932 published the book "Soda Ash Manufacturing", will be kept secret for 70 years, the Solvay method announced. Hou Deping also created Hou's Soda Manufacturing Method with 1939-1942, and set up a pilot plant in Sichuan. 1952, he set up a joint alkali manufacturing plant in Dalian Chemical Plant. The NA method, introduced by Asahi Glass in Japan, was essentially a compromise between soda ash and ammonia alkali. The ratio of soda ash to ammonium chloride can be adjusted at will.

Hot Tags: Sodium Carbonate, wholesale, manufacturers, factory, suppliers, for sale, price