白象山铁矿主井原矿仓综合施工技术

通过对白象山铁矿主井原矿仓工程地质及水文地质的综合分析,提出了探水注浆、反井钻机导硐施工、扩刷帮、砼支护综合施工技术,从而保证原矿仓掘进、支护和安装安全可靠地进行。     

碱金属在白云鄂博铁精矿还原中的催化作用研究

利用失重法对碳的气化反应、CO气体以及碳还原白云鄂博铁精矿进行了实验,使用矿相、XRD分析了还原后样品的相组成与显微结构。研究结果表明：加入催化剂后,碳的气化反应速率和铁精矿还原速率提高,且K2CO3和Na2CO3的催化效果明显优于CaCO3的催化效果。催化剂的加入有助于碳的活性提高,加速了碳的气化反应,从而促进了白云鄂博铁精矿还原反应进行。     

Kinetics study of leaching arsenic from Ni-Mo ore roasting in dust mixture of hydrochloric and sulfuric acids

The kinetics of leaching arsenic from Ni-Mo ore roasting dust was investigated. The effects including leaching temperature, particle size of the smelter dust, stirring speed, the coefficient β（the molar ratio of sodium chlorate to arsenic in the smelter dust） and the initial H＋ concentration on leaching arsenic were studied. The results indicate that the leaching of arsenic increases sharply with the decrease of particle size. The orders of reaction with respect to H＋ concentration and particle size are determinted to be 1.136 and 1.806, respectively. The leaching of arsenic reaches 99% under experimental conditions, the apparent activation energy is determined to be 11.157 kJ/mol, which is consistent with the values of activation energy for diffusion model The kinetics equation of leaching arsenic from the roasting dust could be expressed by a semi-empirical equation as 1-2/3η （1 -η）^2/3 = k0（c[H＋]）^1.136ro^-1.806 exp[（-11157 /RT）t].     

云锡塘子凹矿体矿岩物理力学参数研究

通过对 31- 1#矿体矿岩物理力学参数的研究 ,对矿岩特性及稳固性进行了科学、合理地评价 ,为矿体开采过程中采矿方法的选择、采场结构参数的确定及回采过程中 ,地压的管理提供了科学依据 ,从而保证了矿山生产的安全可靠性     

Copper hydrometallurgy-current status,preliminary economics,future direction and positioning versus smelting

The heap leaching of oxide copper ores with copper cathode recovery by solvent extraction and electrowinning is now well established as a low-cost method of copper recovery. This technology has recently been applied successfully to mixed oxide and chalcocite ores, notably in Chile at Cerro Colorado, Quebrada Blanca and Zaldivar.Currently, there are significant development efforts underway to try to extend heap leaching to chalcopyrite ores.The success of heap leaching/SX/EW has also led to a revival in the development of hydrometallurgical processes to recover copper from chalcopyrite and other copper concentrates. The current status of copper hydrometallurgy is reviewed and the most commercially attractive potential applications are explored. The advantages and disadvantages of the hydrometallurgical treatment of chalcopyrite concentrates and its preliminary economics are compared with those for the current best practices in copper smelting and refining.     

萃取技术处理低品位铜矿的设计实践

介绍了溶剂萃取技术在铜冶金中的应用,依据半工业实验报告,设计并提供了处理低品位铜矿的萃取流程及工艺参数控制,并确定了其设备的大小。     

电场作用对提高微生物浸矿性能的影响

在排土场微生物强化浸出过程中,结合电场生物工程技术,以氧化亚铁硫杆菌为研究对象,提出利用电场作用提高微生物浸矿性能的方法,探讨电场作用对微生物生长代谢以及渗流特性的影响。结果表明：电场作用对氧化亚铁硫杆菌生长代谢的影响非常明显,适当的电场可有效强化其生长代谢能力,过高的电流会抑制氧化亚铁硫杆菌生长;电场作用下,排土场孔隙中微生物的渗流能力明显增强,微生物电动渗流效应在渗透率高排土场中尤为明显。     

乐红铅锌矿床综合找矿模型的建立及重要性

通过对云南乐红铅锌矿已知矿床的地质、地球物理、地球化学特征的研究,构建了地质—地球物理—地球化学的综合找矿模型。该模型的建立,对Pb、Zn金属成矿带预测、地球物理、地球化学异常评价及解释具有重要的意义,并能较好地指导区域找矿及勘查工作。     

一种新型筒形矿仓物位测量方案的设计

针对常用的矿仓物位测量方式受粉尘和堆矿死角因素的影响而存在矿仓物位测量不准确的问题,提出了一种新型的矿仓物位测量方案。该方案选择重锤物位计消除粉尘干扰、采用多点布局求取均值的方法消除堆矿死角干扰。实际应用表明,该方案解决了粉尘和堆矿死角对物位测量的影响,降低了矿仓岗位人员的劳动强度。     

烧结矿品质预报的研究

某钢厂第二烧结车间现有90m^2、105m^2的烧结机各一台,担负着2座1000m^3高炉的供矿任务。随着高炉工艺的日益发展以及节能增效的要求,高炉对烧结矿品质的要求越来高。我国生产的烧结矿与国外生产的烧结矿有很大差距,重要原因就在于烧结矿的品质指标波动性太大,这对高炉的炉况来说是很不利的。所以,烧结矿品质预报的研究是很有必要的。