CAJ | 학술논문

某微细浸染型金矿化学分析结果显示，金品位为3.51×10-6，SiO2含量较高（占71.88%），有机碳质量分数高达2.51%，XRD 和金物相分析可知，矿石中主要矿物为石英、方解石及硫化矿，金矿石主要以微细粒浸染型为主，或包裹于石英、硅酸盐、硫化矿及碳酸盐矿物中。采用焙烧—硫脲或硫氰酸铵单体系浸出时，金浸出率较低；采用焙烧—硫脲、硫氰酸铵混合体系浸出时，可获得较好的浸出率。通过析因试验研究硫氰酸铵、硫脲（Tu）和硫酸铁对金浸出的影响，结果表明硫酸铁和硫氰酸铵相互作用显著。通过优化浸出时间、pH值和液固比，得到混合体系浸金的较优条件。结果表明：在焙烧温度为600℃、焙烧时间为60 min、pH=1.06、硫酸铁用量为14 kg/t、硫氰酸铵用量为10 kg/t、硫脲用量为2 kg/t、浸出时间为7 h 和液固比为3∶1的条件下，可获得75.03%的金浸出率。
모미세침염형금광화학분석결과현시，금품위위3.51×10-6，SiO2함량교고（점71.88%），유궤탄질량분수고체2.51%，XRD 화금물상분석가지，광석중주요광물위석영、방해석급류화광，금광석주요이미세립침염형위주，혹포과우석영、규산염、류화광급탄산염광물중。채용배소—류뇨혹류청산안단체계침출시，금침출솔교저；채용배소—류뇨、류청산안혼합체계침출시，가획득교호적침출솔。통과석인시험연구류청산안、류뇨（Tu）화류산철대금침출적영향，결과표명류산철화류청산안상호작용현저。통과우화침출시간、pH치화액고비，득도혼합체계침금적교우조건。결과표명：재배소온도위600℃、배소시간위60 min、pH=1.06、류산철용량위14 kg/t、류청산안용량위10 kg/t、류뇨용량위2 kg/t、침출시간위7 h 화액고비위3∶1적조건하，가획득75.03%적금침출솔。
The analysis results of ore chemical composition at a certain micro-disseminated gold demonstrated that gold grade was 3.51×10-6,content of SiO2 was as high as 71.88%.In addition,the content of organic of carbon even reached up to 2.51%.After analyzing the XRD and phase of gold,it was found that the ore main minerals were primary composed with quartz,calcite and sulfide.According to the characters of the ore,when employing the thiourea or thiocyanate leaching directly,low leaching rate can be obtained.When employing the thiourea-thiocyanate leaching,better leaching rate can be obtained.Using factorial experimental,paid attention to the amount of thiocyanate,thiourea and ferric sulfate.The results showed that the amount of ferric sulfate and thiocyanate dosage interaction significantly.Then optimize the leaching time,pH,liquid-solid ratio.The test results showed that under the conditions that roasting temperature is 600 ℃ and roasting time is 60 min,the gold leading rate of 75.03% was achieved when pH is 1.06,the dosage of ferric sulfate,thiocyanate and thiourea are 14 kg/t, 10 kg/t and 2 kg/t respectively,the leading time is 7 h,liquid-solid ratio is 3∶1.