Method for re-leaching waste residue generated through leaching manganese carbonate ore with sulfuric acid

Method for re-leaching waste residue generated through leaching manganese carbonate ore with sulfuric acid

  • CN 103,757,274 A
  • Filed: 12/29/2013
  • Published: 04/30/2014
  • Est. Priority Date: 12/29/2013
  • Status: Active Application
First Claim
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1. a kind of leaching method again of the waste residue that a sulfuric acid leaching manganese carbonate ore produces, it is characterized in that the waste residue that sulfuric acid leaching manganese carbonate ore is produced be milled down to particle diameter≤

  • 180 order after and≤

    1.5mm vinasse add withstand voltage in the lump, in the reactor of resistance to sulfuric acid and nitric acid corrosion, the mixing solutions that adds sulfuric acid and nitric acid, and carry out in confined conditions agitation leach, after leaching finishes, the slurry of emitting in reactor carries out solid-liquid separation, obtain required infusion solution, the infusion solution obtaining is for preparing the solution that leaches manganese carbonate ore, starting point concentration for the mixing solutions sulfuric acid that leaches is 0.5mol/L~

    1mol/L, the starting point concentration of nitric acid is 2g/L~

    10g/L, the add-on of sulfuric acid is by 100%~

    105% of the theoretical amount that in waste residue, all manganese leaches, the add-on of vinasse is counted MnO in waste residue with butt 2100%~

    130% of quality, the temperature of whole leaching process is 40 ℃



    70 ℃

    , and stirring velocity is 50 r/min~

    130 r/min, and leached mud washes with water, and washing water are used for preparing sulphuric acid soln and leach for waste residue.

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