Method of making nickel hydroxide material

Method of making nickel hydroxide material

  • CN 1,481,590 B
  • Filed: 09/13/2001
  • Issued: 05/07/2014
  • Est. Priority Date: 09/13/2000
  • Status: Active Grant
First Claim
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1. for the preparation of a method for the anodal nickel hydroxide material of the active cell of battery, said method comprising the steps of:

  • 1) provide the secondary nickel sulfate solution with pollutant;

    2) by the reaction of carbonate deposition at least one times with coagulative precipitation reaction and filtration afterwards reduce pollutant so that the secondary nickel after processing to be provided at least one times;

    With3) the secondary nickel after described processing is made to active cell positive material, it carries out as follows;

    by secondary nickel, hydroxyl ion and ammonium ion after the processing as nickel salt solution are mixed in single reaction container simultaneously, keep reaction vessel at 20-100 ℃

    of constant temperature, speed with 400-1000 rpm stirs the mixture, and the value of the pH of stirred mixture is controlled to 9-13.2. the process of claim 1 wherein step

         3) comprise a continuous stirring precipitation reaction, it is made the secondary nickel after described processing active cell positive material and is not needed front amine reactor.3. the process of claim 1 wherein that described secondary nickel sulfate solution is a kind of plating, chemical plating or electrorefining process solution.4. the method for claim 3, wherein said nickel sulfate solution comprises the nickel of at least 100 g/l.5. the process of claim 1 wherein that described method also comprises raw material fusion step, intermediate product fusion step or final products fusion step.6. a method of preparing active anode nickel hydroxide material, the method comprises the step that nickel sulfate solution is provided and described nickel sulfate solution is made to active cell positive material, described improved being characterised in that;

    1) by the reaction of carbonate deposition at least one times and at least one times coagulative precipitation reaction and filtration afterwards reduce the pollutant of secondary nickel sulfate solution, so that the secondary nickel sulfate solution after the processing with 0.05% weight or more dissolution of metals to be provided, and2) the secondary nickel sulfate solution after described processing is made to active cell positive material, it carries out as follows;

    by secondary nickel sulfate solution, hydroxyl ion and ammonium ion after processing are mixed in single reaction container simultaneously, keep reaction vessel at 20-100 ℃

    of constant temperature, speed with 400-1000 rpm stirs the mixture, and the value of the pH of stirred mixture is controlled to 9-13.7. the method for claim 6, wherein step

         2) comprise continuous stirring.8. the method for claim 6, step 1 wherein) also comprise;

    provide the second metal salt solution of the metal ion that its metal ion is different from secondary nickel sulfate solution, and step

         2) also comprise and make described the second metal salt solution simultaneously and described secondary nickel sulfate solution, ammonium ion and hydroxyl ion mix to provide a kind of cell positive material of activity.9. the method for claim 6, the pollutant load of wherein said secondary nickel sulfate solution is for being greater than 0.05 % by weight to 9 % by weight scope.10. the method for claim 6, the pollutant load of wherein said secondary nickel sulfate solution surpasses 0.4 % by weight.11. 1 kinds of methods of preparing active anode nickel hydroxide material, said method comprising the steps of;

    1) provide a kind of initial secondary nickel sulfate solution having the pollutant of the active material mass formation adverse effect for battery;

    2) by the reaction of carbonate deposition at least one times with coagulative precipitation reaction and filtration afterwards reduce pollutant in secondary nickel sulfate solution so that the secondary nickel source after a kind of processing to be provided at least one times;

    3) the secondary nickel source after described processing is converted into nickel salt solution;

    With4) described nickel salt solution is converted into nickel hydroxide material, it carries out as follows;

    by described nickel salt solution, hydroxyl ion and ammonium ion are mixed in single reaction container simultaneously, keep reaction vessel at 20-100 ℃

    of constant temperature, speed with 400-1000 rpm stirs the mixture, and the value of the pH of stirred mixture is controlled to 9-13.The method of 12. claims 11, wherein step

         4) be the precipitation reaction of a continuous stirring.The method of 13. claims 11, wherein step

         2) comprise at least one raw material fusion step.The method of 14. claims 13, it also comprises step

         5);

    final products fusion.The method of 15. claims 11, wherein said secondary nickel sulfate solution is a kind of discard solution from electronickel refining technique, nickel chemical plating technology or electronickelling technique.

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