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POSSIBILITY STUDY AND ITS APPROACH TO INCREASE COPPER CONCENTRATE GRADE FROM A VIEW OF PROCESS MINERALOGY 从工艺矿物学看提高铜精矿品位的可能性及途径
Keywords Step-by-step priority Middling regrinding Combined regrinding Copper Concentrate grade; 分步优先;中矿再磨;合并再磨;铜精矿品位;
copper concentrate grade 铜精矿品位
When the crude ore contains copper 1.84%, the technical indexes such as the grade of copper concentrate 22.37% and the recovery 78.70% are obtained by use of single-stage grinding, one time of roughing, three times of scavenging and two times of cleaning. 当原矿含铜1.;84%25时，经过一段磨矿、一次粗选、三次扫选和二次精选，获得铜精矿品位22
Practices showed that desliming can not only reduce slime content, but also increase concentrate grade greatly. 实践表明,通过脱泥,不但能减少精矿中的含泥量,而且精矿品位有较大幅度的提高。
Top-Blown Oxygen Converter's Autogenous Smelting of Secondary Copper Concentrate. 氧气顶吹自热炉吃吹练二次铜精矿
Handling of anode slime produced from primary copper concentrate and secondary copper concentrate in Jinchuan Group Co. 论金川集团有限公司原生铜精矿及二次铜精矿所产阳极泥处理工艺。
In view of the low ore grade and recovery of the flotation concentration,improving grinding fineness,promoting the concentration grade of copper 1. 针对该矿浮选精矿品位及回收率偏低的现实,通过提高磨矿细度,铜精矿品位提高1。
The oxygen autogenous smelting process of nickeliferous copper concentrate from Jinchuan Nonferrous Corp. 结果表明,含镍铜精矿自热熔炼,可实现除铁、脱硫、保镍,生产含铜90%25的粗铜,并减少镍的循环。
The result of tests show that the grade of copper concentrate and the copper recovery are 18.04% and 45.60% by adopting a circuit of one rough floatation,one scavenger and one concentrating. 试验结果表明;采用一次粗选、一次扫选和一次精选的浮选流程;可获得铜精矿品位为18.;04%25、回收率为45
A beneficiation plant has improved its flowsheet thus achieved good benefits in increment of concentrate grade &iron recovery rate and in decrement of tailing's grade. 介绍了某选矿厂通过选矿工艺流程技术改造,提高了精矿品位、回收率,降低尾矿品位,取得了较好的经济效益。
Arsenic in a copper concentrate can be rapidly determined by atomic fluorescenc, accompanied with less interference from base copper. 摘要用原子荧光光谱法可快速测定铜矿样中的砷，且基体铜干扰小。
The oxygen autogenous smelting process of nickeliferous copper concentrate from Jinchuan Nonferrous Corp. is thermodynamically analyzed. 对金川二次铜精矿氧气自热熔炼过程进行热力学分析。
The design and innovation of airtig ht blast furnace which used to smelt s econdary copper concentrate were intro duced. 介绍了何谓二次铜精矿及其冶炼工艺流程中密闭鼓风炉的设计及创新。
Firstly,qualified copper concentrate was obtained by flotation,secondly,copper remained in both middlings and tailings was recovered by hydrometallurgical technology. 结果表明,采用先除杂再浮选铜的方法得到一部分合格铜精矿,中矿及尾矿应用湿法冶金方法回收其中的铜,可取得较理想的技术指标。
The results indicate that under the same experimental conditions,both the concentrate grade and recovery of the new type of flotation column are higher than those of Jameson column and XFD flotation cell. 试验结果表明,在同等试验条件下,无论是精矿品位还是回收率,新型细粒浮选柱都高于Jam eson射流浮选柱和XFD机械搅拌浮选机。
Test results show that in the same experimental conditions,the new ring-like type flotation column has superiority in recovery and concentrate grade compare to the XFD flotation machine. 试验证明,在相同的试验条件下,新型环形浮选柱无论是回收率还是精矿品位都比XFD浮选机有优势。
Because of filtration overfall from Panzhihua Midi Mill Plant being dealed with irrationality and concentrate grade being not stable,some improvements on the folw for filtration overfall are made. 针对密地选矿厂现有选别流程中过滤溢流处理不合理、精矿品位不稳定现象,提出了过滤溢流集中处理的流程改进方案,并通对实验室试验和工业试验,验证了改进流程的合理性。
Research showed that cobalt concentrate grade and recovery both could be increased if flotation performanced in a sulphuric acid medium and addition of suitable amount of oxalic acid. 研究表明，在硫酸介质中加入适量的草酸可以提高精矿中钴的品位和回收率。
The locked cycle tests mainly based on collector H-4 and activator NS-6 demonstrate that silver concentrates grade are 0.45% at 84.5% Ag recovery. 以H-4为捕收剂、NS-6活化剂为主的用药制度下的闭路实验结果表明，银回收率达84.;5%25，银精矿品位为0