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关于泡沫塑料吸附富集金的方法已有报导并应用于生产多年,方法简便、快速、准确,成本低,但试样含锑量高时严重干扰金的测定。本文采用固体氯化铵与试样灼烧除锑,试验表明,氯化铵的量要大于试样含锑量的5倍以上,在500～600℃灼烧40分钟,除锑率达99.9%以上,结果与火试金法基本相符。本法可测定矿石中0.5克/吨以上的金;如将硫脲洗脱液蒸干后以10%王水溶解,再进行测定,则可测至0.0x克/吨以上。
Absorption of gold-rich foam method has been reported and applied to the production of many years, the method is simple, fast, accurate, low cost, but the sample containing a high amount of antimony seriously interfere with the determination of gold. In this paper, solid ammonium chloride and the sample burning antimony, the test showed that the amount of ammonium chloride is greater than 5 times the sample containing antimony, burning at 500 ~ 600 ℃ 40 minutes, except antimony rate of 99.9% Above, the result is basically consistent with the fire test method. This method can be determined in the ore more than 0.5 g / ton of gold; such as thiourea eluent evaporated to 10% aqua regia, and then measured, measurable to 0.0x g / ton above.