Method for controlling particle size of compressed-leached material of zinc sulfide concentrate

Method for controlling particle size of compressed-leached material of zinc sulfide concentrate

  • CN 102,925,680 B
  • Filed: 11/21/2012
  • Issued: 10/23/2013
  • Est. Priority Date: 11/21/2012
  • Status: Active Grant
First Claim
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1. a method of controlling zinc sulfide concentrates pressure leaching material particular diameter is characterized in that, described method comprises the steps:

  • (1) ore pulp is sent into reactor;

    Reaction conditions is as follows in the reactor;

    the reaction times is 1-2h, and mixing speed is 75-90r/min, and temperature is 145-155 ℃

    , and ore pulp acidity is 20-50g/L, and oxygen pressure is 1000-1300kPa(g), and the adding rate of additive is 1.0-1.5kg/t;

    Described additive by wooden calcium sulfonate and quebracho extract in mass ratio 1;

    0.5-1.5 form;

    (2) ore pulp that will discharge behind reactor reaction is sent into flash drum and is tentatively lowered the temperature, slurry temperature during described the discharge is 145-155 ℃

    , pressure is 1000-1300kPa(g), and the slurry temperature after the preliminary cooling is 116-120 ℃

    , and pressure is 95-105kPa(g);

    (3) ore pulp after will tentatively lowering the temperature is sent into regulating tank and is further stirred cooling, and control ore pulp residence time in regulating tank is 30-50min, and the temperature of ore pulp is 90-95 ℃

    after the cooling, and pressure is normal pressure, and particle diameter is less than 100 μ

    m.

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