Process for producing antimony white using slag from lead anode mud processing

Process for producing antimony white using slag from lead anode mud processing

  • CN 1,800,423 B
  • Filed: 12/02/2005
  • Issued: 04/21/2010
  • Est. Priority Date: 12/02/2005
  • Status: Active Grant
First Claim
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1. technology of utilizing the slag charge of handling lead anode slurry to produce stibium trioxide is characterized in that:

  • The first step;

    will handle lead anode slurry slag charge, go back to drop in the reverberatory furnace behind the ratio mixing of raw coal and soda ash 100;

    5 by weight~

    12;

    5~

    15 and under 1000~

    1200 ℃

    of high temperature, carry out retailoring, the thick alloy of output;

    Second step;

    thick alloy is allocated removal of impurities in the kier that end lead adds preheating into, make the plumbous fusing in the thick alloy and the end, the proportioning of thick alloy and end lead is as the criterion with the weight 30%-60% that antimony content accounts for whole fusing back alloy liquid, treat to pull out after alloy has melted a pot face scum silica frost, the control alloy temperature is at 450~

    650 ℃

    , add alkali and begin to stir arsenic removal, contain As≤

    0.015%, output lead antimony alloy until the alloy chemical examination;

    The 3rd step;

    lead antimony alloy and end lead are put into oxidation pot, the proportioning of lead antimony alloy and end lead is as the criterion with the 20%-35% that antimony content accounts for whole weight alloy, temperature is at 500-670 ℃

    in the control stove, begin the oxidation of drying, Deng the antimony in the alloy liquid≤

    16% o'"'"'clock, stop oxidation, gather dust and emit stibium trioxide, and in oxidation pot, emit end lead.

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