某钨多金属矿矿石性质研究

Study on Technological Mineralogy Properties of a Tungsten Polymetallic Ore

我国钨开发利用已有100多年的历史,随着钨资源日益枯竭,钨的开发利用面临着伴生、共生多、复杂难选的难题。对钨矿工艺矿物学的研究,对于合理开发利用钨矿资源,高效合理综合回收钨矿资源有重要的意义。本文对某钨多金属矿进行了工艺矿物学研究,包括原矿的化学组成、矿物组成、主要矿物的赋存状态及嵌布特征、矿石结构构造分析及矿石可磨度研究。为设计该矿多金属综合回收方案提供了依据。经研究,原矿中具有回收价值的主要是WO3、Sn、Mo、Cu,其中还含有少量金,利用时可考虑铜金综合回收,以期提高铜精矿价值;其中钨铜钼铋锡主要存在形式为黑钨矿、铜的硫化物、辉钼矿、辉铋矿和黝锡矿;由于黑钨矿与黄铜矿嵌布关系紧密,解离出来的黑钨矿矿粒将有较多与黄铜矿的共嵌体,因此,重选钨精矿中将含有较多的黄铜矿,从黑钨矿的细测嵌布粒度看,矿石需磨矿至0.3 mm以下,才可有70%以上的"干净"黑钨矿解离出来;锡石嵌布粒度较细多在0.3 mm以下,一般在0.1 mm以下;黝锡矿嵌布粒度不均匀,从0.2 mm至0.001 mm都有分布,一般在0.1 mm以下;辉钼矿属于粗粒嵌布。

China＇s tungsten mining history has been more than 100 years, with the tungsten resources increasingly depleted, the development and utilization of tungsten resources are facing various problems. The research on the mineralogy of tungsten ore process has important significance for rational development and utilization of tungsten ore resources, efficient and reasonable comprehensive recovery of tungsten ore resources. The investigation conducted a process mineralogy research of the tungsten polymetallic ore, including chemical composition, mineral composition, occurrence and dissemination characteristics of major mineral, ore texture and structure analysis and ore grindability research. This paper provides the basis for the design of multi-metal comprehensive recovery program of this ore. In the study, the recovery value of the ore is mainly WO3, Sn, Mo, Cu,which also contains a small amount of gold, the use of copper and gold can be considered comprehensive recovery in order to improve the value of copper concen- trate ; which tungsten, copper, molybdenum, bismuth, Tin is mainly in the form of black tungsten, copper sulfide, mo- lybdenum ore, bismuth ore and tinite;due to black tungsten and chalcopyrite embedded close relationship between the dissociated black tungsten ore particles will have More with chalcopyrite inlay, therefore, re-election tungsten concentrate will contain more chalcopyrite, from the black tungsten ore fine embedded in the grain size, the ore to be grinding to 0. 3mm below Can be more than 70% of the＂ clean＂ black tungsten ore dissociation ; Xizhi embedded cloth more fine in the 0. 3mm below,generally below 0. l mm ;tin tin embedded in the grain size is uneven ,from 0. 2 mm to 0. 001mm There are distributed,generally below 0. 1mm;molybdenum is a coarse grain embedded cloth.