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    • 84. 发明专利
    • Method for producing high purity alkali metal carbonate aqueous solution
    • 生产高纯度碱金属碳酸盐水溶液的方法
    • JP2009167050A
    • 2009-07-30
    • JP2008006221
    • 2008-01-15
    • Toagosei Co Ltd東亞合成株式会社
    • IHARA TAKASHIOSAKABE TSUGIKATSU
    • C01D7/26B01J45/00C02F1/42
    • PROBLEM TO BE SOLVED: To provide a method for producing a high purity alkali metal carbonate aqueous solution where a coarse alkali metal carbonate aqueous solution can be refined by removing a heavy metal contained in the coarse alkali metal carbonate aqueous solution. SOLUTION: In the method for producing the high purity alkali metal carbonate aqueous solution, the heavy metal in the coarse alkali metal carbonate aqueous solution is removed by using a chelate resin having an aminophosphate group as a functional group. At least one kind among iron, copper, nickel, lead, aluminum, manganese, titanium, cobalt, zinc and cadmium is quoted as the heavy metal. It is favorable that the concentration of an alkali metal carbonate contained in the coarse alkali metal carbonate aqueous solution is 15-60 mass% when the total amount of the coarse alkali metal carbonate aqueous solution is 100 mass% and that the heavy metal is 5,000 ng/g or less. The heavy metal contained in the high purity alkali metal carbonate aqueous solution can be 500 ng/g or less. The chelate resin having the aminophosphate group is 0.1-20 mass%. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种高纯度碱金属碳酸盐水溶液的制造方法,其中粗碱金属碳酸盐水溶液可以通过除去粗碱金属碳酸盐水溶液中所含的重金属来精制。 解决方案:在高纯碱金属碳酸盐水溶液的制造方法中,通过使用具有氨基磷酸基作为官能团的螯合树脂,除去粗碱金属碳酸盐水溶液中的重金属。 铁,铜,镍,铅,铝,锰,钛,钴,锌和镉中至少有一种称为重金属。 当粗碱金属碳酸盐水溶液的总量为100质量%,重金属为5,000ng时,碱土金属碳酸盐水溶液中所含的碱金属碳酸盐的浓度为15〜60质量% / g以下。 高纯度碱金属碳酸盐水溶液中所含的重金属可以为500ng / g以下。 具有氨基磷酸酯基的螯合树脂为0.1-20质量%。 版权所有(C)2009,JPO&INPIT
    • 85. 发明专利
    • Method for producing high purity alkali metal carbonate aqueous solution
    • 生产高纯度碱金属碳酸盐水溶液的方法
    • JP2009167036A
    • 2009-07-30
    • JP2008005010
    • 2008-01-11
    • Toagosei Co LtdTsurumi Soda Co Ltd東亞合成株式会社鶴見曹達株式会社
    • IHARA TAKASHIOSAKABE TSUGIKATSU
    • C01D7/26B01J45/00C02F1/42
    • PROBLEM TO BE SOLVED: To provide a method for producing a high purity alkali metal carbonate aqueous solution where a coarse alkali metal carbonate aqueous solution can be refined by removing a heavy metal contained in the coarse alkali metal carbonate aqueous solution. SOLUTION: In the method for producing the high purity alkali metal carbonate aqueous solution, the heavy metal in the coarse alkali metal carbonate aqueous solution is removed by using a chelate resin having an amidino group as a functional group. At least one kind among iron, copper, nickel, lead, aluminum, manganese, titanium, cobalt, zinc and cadmium is quoted as the heavy metal. It is favorable that the concentration of an alkali metal carbonate contained in the coarse alkali metal carbonate aqueous solution is 15-60 mass% when the total amount of the coarse alkali metal carbonate aqueous solution is 100 mass% and that the heavy metal is 5,000 ng/g or less. The heavy metal contained in the high purity alkali metal carbonate aqueous solution can be 500 ng/g or less. The chelate resin having the amidino group is 0.1-20 mass%. COPYRIGHT: (C)2009,JPO&INPIT
    • 要解决的问题:提供一种高纯度碱金属碳酸盐水溶液的制造方法,其中粗碱金属碳酸盐水溶液可以通过除去粗碱金属碳酸盐水溶液中所含的重金属来精制。 解决方案:在高纯度碱金属碳酸盐水溶液的制造方法中,通过使用具有脒基作为官能团的螯合树脂,除去粗碱金属碳酸盐水溶液中的重金属。 铁,铜,镍,铅,铝,锰,钛,钴,锌和镉中至少有一种称为重金属。 当粗碱金属碳酸盐水溶液的总量为100质量%,重金属为5,000ng时,碱土金属碳酸盐水溶液中所含的碱金属碳酸盐的浓度为15〜60质量% / g以下。 高纯度碱金属碳酸盐水溶液中所含的重金属可以为500ng / g以下。 具有脒基的螯合树脂为0.1-20质量%。 版权所有(C)2009,JPO&INPIT
    • 90. 发明专利
    • TREATMENT OF WASTE SLAG
    • JPS54100999A
    • 1979-08-09
    • JP770778
    • 1978-01-26
    • TOKUYAMA SODA KKSUMITOMO METAL IND
    • YAMADA KAZUNARIIBA MASAHISAMARUKAWA YUUJIYOUOKAMOTO SETSUO
    • C01D7/00C01D7/26C22B1/00C22B7/04
    • PURPOSE:To recover high purity alkali carbonate which is reusable from filtrate by the procedure in which waste slag produced when molten pig iron is desulfurized or dephosphorated by an alkali carbonate is extracted with hot water while blowing CO2 into the apparatus, and then the extracted solution is mixed with iron ion and sediment is filtered. CONSTITUTION:The molten pig iron obtained at the blast furnace 1 is sent to the desulfurization and dephosphoration process 2 to cause reaction with Na2CO3 added in a fixed amount, whereby S is converted into Na2S and P is converted into sodium phosphate. And, the pig iron thus treated is sent to the converter 6 and mixed with CaO, etc. for refining, and then sent to the casting process 7. On the other hand, the waste slag formed in the process 2 is sent to the extraction and washing process 3, where extraction and washing are made with hot water while injecting CO2-containing gas to crystallize most of S ion in the form of iron sulfide. And, the extracted solution is sent to the sedimentation tank 4 and mixed with iron ion to precipitate iron sulfide and iron phosphate and removed them. Then, the filtrate is concentrated and then sent to the fractional crystallization process 5 to separate NaCO3 sediment for removal and recovery.