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 A
  • Filed: 12/02/2005
  • Published: 07/12/2006
  • Est. Priority Date: 12/02/2005
  • Status: Active Grant
First Claim
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1. A process for producing antimony white by utilizing slag for treating lead anode slime is characterized in that:

  • the first step is as follows;

    uniformly mixing slag materials for treating lead anode slime, reducing coal and calcined soda according to the weight ratio of 100;

    5-12;

    5-15, putting the mixture into a reverberatory furnace, carrying out reduction smelting at the high temperature of 1000-1200 ℃

    , producing crude alloy,the second step is that;

    adding the crude alloy into bottom lead, adding the crude alloy into a preheated refining pot to remove impurities, melting the crude alloy and the bottom lead, taking the ratio of the crude alloy to the bottom lead based on the fact that the content of antimony accounts for 30-60% of the weight of the whole molten alloy liquid, taking out the scum on the pot surface after the alloy is melted, controlling the alloy temperature at 450-650 ℃

    , adding alkali to start stirring and removing arsenic until the content of As in the alloy test is less than or equal to 0.015%, producing lead-antimony alloy,the third step;

    putting the lead-antimony alloy and bottom lead into an oxidation pot, controlling the temperature in the furnace at 670 ℃

    under the condition that the content of antimony accounts for 20-35% of the weight of the whole alloy, starting blowing oxidation, stopping oxidation when the content of antimony in an alloy liquid is less than or equal to 16%, collecting dust, discharging antimony white, and discharging the bottom lead in the oxidation pot.

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