酸浸预处理提高金矿焙烧烟尘中金浸出率的研究
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摘要
为提高难处理金矿焙烧烟尘中金的氰化浸金率,采用强酸酸浸对其进行预处理,考察了酸浸液固比、温度、时间及搅拌速度对氰化过程中金浸出率的影响,确定了最佳酸浸条件为:酸浸液固比0.98∶1、温度85℃、时间2 h、搅拌速度500 r/min,此时烟尘的氰化浸金率为91.04%。
The dust from refractory gold ore roasting process was leached with strong acid for pretreatment, in order to improve the cyanide leaching rate of gold from the dust. The influences of liquid-to-solid ratio, temperature, time and agitation speed of acid leading on the gold leaching rate by cyanidation were investigated in the experiment, and the optimum acid leaching condition for the pretreatment was determined as follows: the liquid-to-solid ratio of 0.98∶1, leaching temperature of 85 ℃, leaching time of 2 h and agitation speed of 500 r/min. It was shown that the cyanide leaching rate of gold from dust was 91.04% under such conditions.
The dust from refractory gold ore roasting process was leached with strong acid for pretreatment, in order to improve the cyanide leaching rate of gold from the dust. The influences of liquid-to-solid ratio, temperature, time and agitation speed of acid leading on the gold leaching rate by cyanidation were investigated in the experiment, and the optimum acid leaching condition for the pretreatment was determined as follows: the liquid-to-solid ratio of 0.98∶1, leaching temperature of 85 ℃, leaching time of 2 h and agitation speed of 500 r/min. It was shown that the cyanide leaching rate of gold from dust was 91.04% under such conditions.
引文
[1] 马方通,高利坤,董方,等.难处理金矿预处理及强化氰化技术研究现状及进展[J].黄金,2016,37(4):51-55.
[2] 唐云,杨典奇,唐立靖,等.微细浸染型难选金矿两段预处理-非氰化浸出研究[J].矿冶工程,2017,37(1):60-63.
[3] 徐忠敏,翁占平,国洪柱.复杂难处理金精矿加压氧化预处理工艺试验研究[J].黄金,2017,38(2):54-57.
[4] 金世斌,石吉友,鲁玉春,等.国外难处理金矿热压氧化工艺条件分析[J].黄金,2013(6):52-56.
[5] 殷书岩,杨洪英.难处理金矿加压氧化预处理技术及发展[J].贵金属,2008,29(1):56-59.
[6] 唐云,唐立靖,王在谦.微细浸染金矿碱性热压预处理-硫代硫酸钠浸金[J].矿冶工程,2016,36(1):63-67.
[7] 张玉明,张福元,熊领领.含铜金精矿硫酸化焙砂两段浸出试验研究[J].中国有色冶金,2014,43(4):76-79.
[8] 寇文胜,陈国民.提高难浸金精矿两段焙烧工艺金氰化浸出率的研究与实践[J].黄金,2012,33(5):47-49.
[9] 谭希发.某铜金精矿焙烧-酸浸-氰化综合回收金铜工艺研究[J].矿冶工程,2011,31(1):47-50.
[10] 邓文,伍荣霞,刘志成,等.焙烧预氧化-硫代硫酸盐浸出某难处理金精矿[J].矿冶工程,2017,37(3):114-117.
[2] 唐云,杨典奇,唐立靖,等.微细浸染型难选金矿两段预处理-非氰化浸出研究[J].矿冶工程,2017,37(1):60-63.
[3] 徐忠敏,翁占平,国洪柱.复杂难处理金精矿加压氧化预处理工艺试验研究[J].黄金,2017,38(2):54-57.
[4] 金世斌,石吉友,鲁玉春,等.国外难处理金矿热压氧化工艺条件分析[J].黄金,2013(6):52-56.
[5] 殷书岩,杨洪英.难处理金矿加压氧化预处理技术及发展[J].贵金属,2008,29(1):56-59.
[6] 唐云,唐立靖,王在谦.微细浸染金矿碱性热压预处理-硫代硫酸钠浸金[J].矿冶工程,2016,36(1):63-67.
[7] 张玉明,张福元,熊领领.含铜金精矿硫酸化焙砂两段浸出试验研究[J].中国有色冶金,2014,43(4):76-79.
[8] 寇文胜,陈国民.提高难浸金精矿两段焙烧工艺金氰化浸出率的研究与实践[J].黄金,2012,33(5):47-49.
[9] 谭希发.某铜金精矿焙烧-酸浸-氰化综合回收金铜工艺研究[J].矿冶工程,2011,31(1):47-50.
[10] 邓文,伍荣霞,刘志成,等.焙烧预氧化-硫代硫酸盐浸出某难处理金精矿[J].矿冶工程,2017,37(3):114-117.