Method for extracting yellow gold from gold extracting residue and complex and unmanageable hard-to-deal electrum

Method for extracting yellow gold from gold extracting residue and complex and unmanageable hard-to-deal electrum

CN
  • CN 101,892,392 A
  • Filed: 08/09/2010
  • Published: 11/24/2010
  • Est. Priority Date: 08/09/2010
  • Status: Active Grant
First Claim
Patent Images

1. from gold-extracted waste slag and complicated difficult kustelite, extract the method for yellow gold, it is characterized in that, in turn include the following steps:

  • (1) raw material is carried out proportioning by following weight fraction, 33~

    38 parts of cyanidation gold-extracted waste slags, 10~

    18 parts of complicated difficult kustelites, 30~

    40 parts of copper ore concentratess, 8~

    9 parts of sludging fluxes, 10~

    12 parts in cigarette ash or slag concentrate are prepared into mixture;

    (2) feed stock for blast furnace of (1) step gained is put into the oxygen-enriched side-blowing bath melting, the volume by volume concentration of oxygen enrichment is 45~

    50%, and the reaction zone bath temperature is controlled at 1090 ℃



    1200 ℃

    ;

    Through after the melting, the copper matte regulus of output and slag blend melt enter the settling region to feed stock for blast furnace in the smelting zone, and it is overheated and settlement separate to carry out, output copper matte regulus and slag, copper matte regulus liquid level 800mm;

    (3) copper matte regulus of (2) gained is emitted for the oxygen enriched molten bath blowing from the oxygen-enriched side-blowing bath interruption, the blowing temperature is controlled at 1200~



    1250 ℃

    , in slag forming period, volume by volume concentration is that 30~

    35% oxygen-rich air blast the melt in stove from air port, body of heater side, melt is divided into two-layerly when out-of-blast, and the upper strata slag is regularly discharged, and the sulfonium of lower floor becomes white metal, continuation is blown to white metal, enters to make the alloy stage;

    Making the alloy stage, volume by volume concentration is that 45~

    50% oxygen-rich air blast the generation yellow gold in the white metal body from air port, body of heater side in stove;

    (4) smelting slag and blowing slag are carried out fragmentation, ore grinding, classification, flotation, flotation concentrate returns step (1) as the slag concentrate.

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