Assertion: sodium carbonate | /r/CapableOf | give low foam index
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Source sentences:
text: The soda ash so produced has a high bulk density and when heated with phosphoric acid produces a sodium tripolyphosphate with a reliectance above 85 and gives a low foam index when mixed with phosphoric acid.
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 producing sodium carbonate from naturally occurring crude trona containing organic irnpurities which comprises dissolving said crude trona in a cycling mother liquor of sodium carbonate and sodium bicarbonate containing substantially more normal carbonate than bicarbonate and which is unsaturated with respect to trona and from which the dissolved trona may be crystallized as sodium sesquicarbonate, clarifying said solution, while leaving organic impurities dissolved therein, crystallizing and recovering sodium sesquicarbonate 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 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, so produced, having a high bulk density and, when heated lwith phosphoric acid, producing a sodium tripolyphosphate with a reflectance above about 85 and said soda ash giving a low foam index Awhen 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 from said crude trona solution a compound selected from the group consisting of sodium sesquicarbonate, sodium bicarbonate and sodium carbonate monohydrate, 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 sucient (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 4with phosphoric acid, producing a sodium tripolyphosphate with a reflect-ance 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.
text: The method of producing sodium carbonate which comprises: dissolving the crude trona containing organic impurities in an aqueous solvent, clarifying the solution so formed, leaving organic impurities dissolved therein, recovering sodium carbonate-containing crystals containing organic impurities from said clarified solution, calcining said crystals at normal calcining temperatures to form a light ash containing organic impurities therein, calcining said light ash in a non-reactive atmosphere at a high temperature between 450 C. and 550 C. for a period of from l0 minutes to 60 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 lash 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.