| 摘要 |
<p>A method for smelting potassium gold cyanide is provided to generate fulminating gold having a high purity by effectively removing impurities and excluding an additional step from a solvent extraction process. A method for smelting potassium gold cyanide comprises the steps of completely dissolving waste metal scrap containing gold in aqua regia(S10), primarily removing impurities existing in the aqua regia(S30), extracting gold ions in the aqua regia by allowing the aqua regia to react with solvent extractant(S40), secondarily removing impurities by allowing solvent, from which gold is extracted, to react with hydrochloric acid(S50), and collecting fulminating gold deposit by allowing the solvent to react with back-extractant(S60). Liquid-phase potassium gold cyanide is purified by allowing the fulminating gold to react with cyanide aqueous solution(S70), and powder potassium gold cyanide is generated(S80).</p> |
