华阳川铀多金属矿工艺矿物学研究
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摘要
陕西华阳川铀多金属超大型矿床具有矿量大、矿种多、易开采等特点。为了给该资源的选矿工艺研究提供依据,采用MLA分析、筛分分析和剖面测量等方法对其进行了详细的工艺矿物学研究。结果表明:矿石铀含量为162 g/t、铌含量为237 g/t,主要赋存在铌钛铀矿、铅贝塔石和晶质铀矿中;矿石铅含量0.61%、银含量350 g/t,主要赋存在方铅矿和白铅矿中,未见银的独立矿物;矿石稀土元素含量较高,但主要以褐帘石的形式赋存,综合利用难度较大。矿石中有用矿物嵌布粒度粗,多大于0.15 mm。矿体剖面分析显示矿石中有用元素分布不均匀,大部分样品中铀含量在100 g/t左右,仅有少量样品中铀含量达到300 g/t,且以突变为主。对破碎样的筛分分析显示,有用元素在细粒级富集,说明矿石具有粗粒预选抛尾的可能性。综合分析认为矿石中有用元素分布不均匀、在破碎过程中分异明显是矿石粗粒预选的标型特征。
Huayangchuan uranium polymetallic ore of Shaanxi Province belongs to large mineral deposit with properties of large volume mineral,variety types of minerals,and it is exploitable. In order to provide technique basis on mineral processing technology the MLA,microscopic analysis,sieve analysis,profiling and other analysis was used to study the process mineralogy of it. The result shows that the content of uranium is 162 g/t,niobium is 237 g/t. They exist in betafite,plumbobetafite,and uraninite. the content of lead is 0.61%,silver is 350 g/t. They exist in galena and cerussite.And there are no independent minerals were found. The useful mineral's particle size is very crude. Most of them are larger than 0.15 mm. The profile of typical ore shows that the content of uranium is maldistribution. The content of uranium in most of ore are 100 g/t and only a little ores' are higher than 300 g/t. And they are mutation. The sieve analysis shows that the uranium and lead are enriched in fine fraction. So the ore are suitable to be processed by coarse grain preconcentration. And comprehensive analysis shows that the content of useful minerals are maldistribution in primary ore and crushed ore are the typomorphic characteristic of ore suitable to be processed by coarse grain preconcentration.
Huayangchuan uranium polymetallic ore of Shaanxi Province belongs to large mineral deposit with properties of large volume mineral,variety types of minerals,and it is exploitable. In order to provide technique basis on mineral processing technology the MLA,microscopic analysis,sieve analysis,profiling and other analysis was used to study the process mineralogy of it. The result shows that the content of uranium is 162 g/t,niobium is 237 g/t. They exist in betafite,plumbobetafite,and uraninite. the content of lead is 0.61%,silver is 350 g/t. They exist in galena and cerussite.And there are no independent minerals were found. The useful mineral's particle size is very crude. Most of them are larger than 0.15 mm. The profile of typical ore shows that the content of uranium is maldistribution. The content of uranium in most of ore are 100 g/t and only a little ores' are higher than 300 g/t. And they are mutation. The sieve analysis shows that the uranium and lead are enriched in fine fraction. So the ore are suitable to be processed by coarse grain preconcentration. And comprehensive analysis shows that the content of useful minerals are maldistribution in primary ore and crushed ore are the typomorphic characteristic of ore suitable to be processed by coarse grain preconcentration.
引文
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