Assertion: sodium carbonate | /r/CapableOf | heat with phosphoric acid
Facets:
Source sentences:
text: The method of producing sodium carbonate from naturally occurring crude trona containing organic impurities which comprises dissolving said crude trona in a liquor from which the dissolved trona may be crystallized, clarifying said solution, while leaving organic impurities dissolved therein, crystallizing and recovering sodium carbonate-containing crystals from said solution, said crystals containing organic impurities, calcining said crystals in a non-reactive atmosphere at a temperature between 400 C. and 800 C. for a time suflicient (a) to volatilize substantial amounts of organic impurities therefrom, (b) to convert most of the remainder of the organic impurities to a coke, and (c) to convert said sodium carbonate-containing crystals into soda ash, said soda ash, so produced, having a high bulk density and, when heated with phosphoric acid, producing a sodium tripolyphosphate with a reliectance above about 85 and said soda ash giving a low foam index when mixed with phosphoric acid.
text: The method of reducing organic material and increasing the density of sodium carbonate produced from solutions of crude trona containing organic impurities which comprises crystallizing and producing from said crude trona solution a sodium carbonate-containing compound selected from the group consisting of sodium sesquicarbonate, sodium bicarbonate, sodium carbonate monohydrate and light soda ash, said compound containing organic impurities and calcining said compound in non-reactive atmosphere at a temperature between 400 C. and 800 C. for a period of at least 10 minutes (a) to volatilize substantial amounts of organic impurities therefrom (b) to convert most of the remainder of the organic impurities to a coke, and (c) to convert said sodium carbonate-containing crystals into soda ash, said soda ash having a high bulk density and, when heated with phosphoric acid, producing Ia sodium tripolyphosphate with a reflectance above about and said soda ash giving a low foam index when mixed lwith phosphoric acid.
text: The method of producing sodium carbonate from crude trona solutions containing organic impurities which comprises crystallizing sodium sesquicarbonate from said crude trona solution, said crystals containing organic impurities, and calcining said crystals in a non-reactive atmosphere at a temperature between 400 C. and 800 C. for a time suicient (a) to volatilize substantial amounts of organic impurities therefrom (b) to convert most of the remainder of the organic impurities to a coke, and (c) to convert said sodium sesquicarbonate-crystals into soda ash, said soda ash having a high bulk density and, when heated with phosphoric acid, producing a sodium tripolyphosphate with a reflectance above about 85 and said soda ash giving a low foam index when mixed with phosphoric acid.
text: The method of producing sodium carbonate from crude trona solutions containing organic impurities which comprises crystallizing sodium sesquicarbonate from said crude trona solution, said crystals containing organic impurities, and calcining the crystals in a non-reactive atmosphere at a temperature between 400 C. and 800 C. for a period of at least 10 minutes (a) to volatilize substantial amounts of organic impurities therefrom, (b) to convert most of the remainder of the organic impurities to a coke, and (c) to convert said sodium sesquicarbonate crystals into soda ash, said soda ash having a high bulk density and when heated with phosphoric acid, producing a sodium tripolyphosphate with a reflectance above about 85 and said soda ash giving a low foam index when mixed with phosphoric acid.