含银难选复杂硫化矿的浮选分离研究

矿石性质复杂,浮选分离难度大,主要原因是:黄铁矿易浮,在石灰的高碱性矿浆中(游离氧化钙含量高达863克/米~3)难以被抑制;高碱性介质中铅离子含量高,导致黄铁矿受到活化而易浮;铜、铅矿物紧密共生。通过研究,采用亚硫酸-石灰法成功地实现了铜铅银矿物与易浮黄铁矿的浮选分离;采用硫化钠与活性炭脱药、五硫化二磷及硫酸铜与亚硫酸氢钠组合药剂法,也成功地实现了铜铅矿物的浮选分离。连续浮选扩大试验获得了良好指标。     

低品位自然铜综合回收的研究与实践

接触交代矽卡岩类型磁铁矿中一般均含有铜元素。由于形成时期不同,铜的赋存状况各有差异,有的以自然铜状态存在,但含量很低,不够综合回收品位,但经磁选将大量的磁铁矿选出后,自然铜大部分在磁选尾矿中得到富集,再经过重选进一步富集后,可用浮选方法综合回收。     

遗传算法及其在采矿工程中的应用

遗传算法是一种新型的搜索寻优技术，它借助复制、交换、突变等操作逐步逼近最优解。论文阐述了遗传算法的特点及其实现步骤，介绍了其在矿山中的应用，并介绍了通过确定采区巷道布置系统及其主要参数来进行采区优化设计的实例，说明了遗传算法是解决采矿工程类复杂问题的一种有效手段。     

白云鄂博中贫氧化矿回收稀土新工艺

本文概述了白云鄂博稀土资源的主要特点及其与选矿的关系,总结了回收稀土的选矿生产流程及存在的主要问题。讨论了弱磁—强磁—浮选新工艺流程回收稀土的合理性以及稀土矿物和其它矿物的分选行为。认为适宜的入选原料是提高稀土产量和质量的关键。新工艺回收稀土的品位和回收率均有较大幅度提高。     

电沉积Ni－W－P－SiC复合材料的组织及结构

Ｘ—射线衍射仪测定表明，当Ｎｉ—Ｗ—Ｐ—ＳｉＣ复合镀层中的磷含量大于８ｗｔ％时，镀层在镀态时呈非晶态结构；α—ＳｉＣ微粒的存在并不影响复合镀层的结构，也不参与结构的转变。热处理温度对Ｎｉ—Ｗ—Ｐ—ＳｉＣ复合镀层的组织结构有一定的影响，当温度升到３００～４００℃时，产生Ｎｉ３Ｐ粒子，起到沉淀硬化作用，因此，复合镀层的硬度最高；若继续升高温度，Ｎｉ３Ｐ粒子长大，然后集聚并粗化，导致镀层软化，硬度下降。扫描电镜证明，α—ＳｉＣ微粒在复合镀层中的分布较均匀。添加剂的加入，有利于提高复合镀层的晶化温度。     

某地铁铜矿石浮磁选流程试验研究

详细研究了浮选—磁选和磁选—浮选两种试验流程及试验条件,获得了高品位铁精矿和铜精矿两种产品,综合利用了矿产资源。     

TN—C—S系统中PEN线必须规范连接

介绍TN—C—S系统的特点,通过石佛水厂公寓楼启用时电气异常现象的处理,说明在TN—C—S系统中,PEN线必须规范连接。     

复杂难选钼铜硫多金属矿选矿技术研究

原矿中钼品位为0.081%,铜含量很低为0.04%,而硫含量较高为2.70%,钼铜硫矿物之间以及它们与脉石矿物之间嵌布粒度微细,并且铜硫之间及与其他硫化矿物之间呈微细粒互相包裹,脉石矿物异常好浮。为了同时回收该矿石中的目的矿物,研究采用了合理有效的选矿流程方案及药剂制度,使难选铜、钼、硫矿物得到有效的回收,获得钼精矿品位46.10%、回收率83.43%,铜精矿品位11.92%、回收率74.40%,硫精矿品位45.35%、回收率90.51%的良好选矿指标。     

新型电力系统下的源—网—荷—储能协调优化模型研究

为实现配网系统一体化协调的管控目标,提出了一种基于新型电力系统下的“源—网—荷—储”协同优化的方法。结合发电源、配电网络、用电负荷及储能设备的运行特点,制定出针对性的评价指标,运用遗传优化算法对本文的优化模型进行仿真训练,模拟出各机组的出力情况及负荷时序的变化。仿真结果表明,利用本文所提的模型及相应的评价方法,既能节约主动配电网的综合成本,又可以提高新能源消纳比例,提升配网系统的综合效益。     

Al-Mg-Si合金GP区的原子键络与强化作用

运用固体经验电子理论，对Al—Mg—Si合金GP区（L10型）价电子结构进行了计算，结果表明：L10型GP区的最强键与次强键比基体最强键强很多，其主键络骨架对合金键络起到增强作用；而其相邻的（111）晶面上的共价键络较强，使得该面滑移时较基体更困难，从而起到提高合金硬度的作用。     

Deformation of a blocky medium around a working

Conclusions The deformation of the blocky mass around a working can be interpreted as displacement of the material in a convergent radial channel with an aperture angle of 360°. A kinematic scheme permitting the formulation of the problem in statically determined form (similar to the classical scheme for calculation of the pressure of the earth at a supporting wall) is constructed. Axisymmetric solutions for different levels of block interaction on contact are given. Estimates of the carrying capacity are obtained in the case of rigid-plastic contact between the block and in conditions of dry friction. It is shown that this scheme admits of transition in the limit to the accurate solution of the Lame problem in the continuum formulation. Cases in which increase in the relative slip between the blocks leads to decrease in the interaction force between them (weakening) are considered. With slight weakening, the deformation is a stable process. If the weakening is greater than a critical level, the solution becomes unstable, which indicates the uncontrollable release of stored elastic energy from the mass. Institute of Mining, Siberian Branch, Academy of Sciences of the USSR, Novosibirsk. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 6, pp. 7–15, November–December, 1990.     

Three-dimensional modeling of a deposit in a database

Institute of Mining, Siberian Branch, Academy of Sciences of the USSR, Novosibirsk. Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 4, pp. 77–85, July–August, 1991.     

New approximation for a magnetic field of a dipole on a borehole axis

New, more exact approximated solution to the direct problem of identifying a signal of a vertically oriented magnetic dipole on a borehole axis is reported. This solution makes possible to process the data of the high-frequency induction logging isoparametric sounding, including negative values of the measured phase difference. The new approximation enables taking into account the variable borehole radius that is of special importance when a highly-conductive drilling mud is used. As the obtained expression is explicit, it can be used for the quick data processing and for solving inverse problems of the borehole geophysics. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 4, pp. 3–9, July–August, 2006.     

Productivity of a well linked with a reservoir by two in-line holes of a small diameter

A promising alternative to hydraulic fracturing is proposed for enhancing oil recovery in a reservoir with satisfactory vertical permeability by way of creating hydraulic communication between a well and the reservoir via two in-line holes of a small diameter. An approximated calculation of stationary productivity of this system is presented. An analysis of this system efficiency is performed by comparing its conductivity and productivity coefficients with the same coefficients of a created fracture having the length and opening equatable with the length and diameter of the hole. __________ Translated from Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, No. 5, pp. 20–28, September–October, 2006.