铜矿山

Meanwhile, the concentration of Pb,Zn and other heavy metals is rather high in the oxidation zone and decreasesdownward to levels that are unbelievably low for Pb-Zn mine tailings. Theseobservations suggest that heavy metals should be re-immobilized by secondaryminerals, rather than primary minerals, in the oxidation zone, and could be leachedout from suboxic environment due to low rate oxidative dissolution which preventsthe precipitation of secondary minerals in significant amount. Thus, cover scenarioswhich establish a suboxic environment beneath the cover layer might not always beeffective in preventing heavy metal release from mine tailings.Sequential extraction studies indicate that, in addition to heavy metal leaching,oxidation of the mine tailings increased the mobility of residual Zn, and Cu, while Pb remains immobile due to the formation of anglesite (PbSO4). Using the seven-step extraction technique developed by Dold (J. Geochem. Explor., 2003, 80: 55-68), galena dissolves in significant amount at step 2 most probably due to the strong complexing of Pb2+ by acetate, while other metal sulfides dissolve at step 6, which suggest that this extraction technique could not be used to evaluate the mobility of lead in natural environment

重金属含量均低于新鲜尾矿，但以硬化层中的含量最高(Pb、Zn含量分别为0.47%和0.93%)，往下大幅度降低，表明尾矿风化过程中形成的次生矿物对Pb、Zn等重金属元素有较强的固定作用，而次氧化带的淋溶作用造成了金属元素的大量流失；(4)与新鲜尾矿相比，硬化层中铅的可迁移性大大降低，硬化层之下尾矿样品中铅的可迁移性也不同程度降低，这是由于硫化物氧化产生的硫酸根与尾矿中的铅反应形成铅矾(PbSO_4)的缘故；(5)氧化作用使尾矿中的zn、Cu等重金属的可迁移性不同程度地增大，其中对锌的可迁移性影响最大，铜的可迁移性与铁比较相似，铅则容易与硫化物氧化形成的SO_4~(2-)反应形成铅矾(PbSO_4)；(6)为了减少尾矿污染和修复矿山环境，人们提出了各种不同的尾矿覆盖方案，本文的研究结果表明，这些方法不一定能够有效地阻滞污染元素的迁移。

For discussing and evaluating the possibal contribution to atmospheric pollution in the process of utilizing mineral resources,the pollution characteristics and sources of Cu element in the dustfall were evaluated in the typical mining city-Tongling.

为了探讨和评价矿产资源利用过程对大气污染的可能贡献，评价了典型有色金属矿山城市--铜陵市的大气降尘中铜元素的污染状况及其来源。

Because the mineral resources in support is insufficiency and the capability of the production is vanish rapidly, the contradiction between supply and need of the mineral resources will extrude gravely and the position of the mineral resources will become grimness yet in the to-be one or two decades.

本文所研究的青海东昆仑肯德可克金－铜－钴多金属矿具有很好的综合利用价值，对此矿的合理开发和利用，不仅可以给该地区和矿山带来巨大的经济效益和社会效益，而且可以推动国土资源大调查工作和西部大开发的进展。

The company was founded in 2007, mainly engaged in molybdenum concentrate, molybdenum trioxide, molybdenum calcium, molybdenum iron, production and operation activities; lead, zinc, copper, germanium ore, iron ore and other products, building materials sales business, business own mining resources, with mining, elections, rule of production capacity, the company has a strong, strong technical force, strict production quality.

本公司成立于2007年，主要从事以钼精矿、三氧化钼、钼酸钙、钼铁、的生产经营活动；铅、锌、铜、锗矿、铁精矿等产品、建筑材料销售方面的业务，企业拥有自主矿山资源，具有采、选、冶生产能力，公司实力强劲，技术力量雄厚，严把生产质量关。

Its main products cover all kinds of Nuts,Bushings,Sleeves, Bushings,Socket Liner and Seals as accessories for forging press,steel rolling,minging(crushers-cone\symons etc),power generation equipment and ships in addition to copper alloy castings needed in other sectors.

产品/Product：主要产品是为锻压设备、轧钢设备、矿山设备、发电设备、船舶设备配套生产各种螺母、衬瓦、轴套、碗形轴瓦、密封体等及其它行业机械设备所需的铜、铝合金铸件。

Improvement was seen in the trades of silk reeling and weaving and in ceramics manufacturing, as well as in the trades of iron mining, copper casting, papermaking, shipbuilding, etc., Economic and Cultural exchanges with foreign countries developed.

改进体现在交易的缫丝，织造和在陶瓷生产中，以及在该行业的铁矿山，铜铸造，造纸，造船等，经济，文化的交流与国外发达国家。

Therefore, starting in November, the China's third largest copper prices started the largest early-warning mechanisms, Yang Chao-yun led rushed major copper smelter and mines, take three measures to tide over the severe winter.

因此，从11月起，在中国第三大铜价格开始最大的预警机制，杨照云领导赶到主要铜冶炼厂和矿山，接管严冬三项措施，渡过难关。

Main products of our company are crusher series, sand maker series, mine-selecting series and laboratory series: shaking table, jigger, spiral chute, flotation machine, spiral classifier, ball mill, mixing tank, feeding machine, feeder, vibrating screen, crusher, sand pump, magnetic separator, hydraulic grader, hydraulic cyclone, playing sand machine, laboratory sand pump, laboratory shaker, laboratory spiral chute, laboratory flotation machine, laboratory ball mill, laboratory crusher, laboratory magnetic separator, laboratory mixing barrels, grinding machines, vacuum filter, etc., and the other can be customized according to customer's requirements of various types of mineral dressing machinery and equipment.

公司主要生产有破碎设备、制砂设备、选矿设备、磨粉设备和实验室选矿设备五大系列产品：摇床，跳汰机，螺旋溜槽，浮选机，螺旋分级机，球磨机，搅拌槽，给料机，给矿机，振动筛，破碎机，砂泵，磁选机，水力分级机，水力旋流器，打砂机，实验室砂泵，实验室摇床，实验室螺旋溜槽，实验室浮选机，实验室球磨机，实验室破碎机，实验室磁选机，实验室调浆桶，研磨机，真空过滤机等产品，另可根据客户要求定做各种型号的选矿机械设备等成套选矿设备，适用于选铁、铜、金、银、铅、钨、钼、锰等有色金属矿及萤石、石英石等非金属矿，广泛应用于冶金、矿山、化工、建材、煤炭、耐火材料、学校等行业。

Tongchang porphyry copper deposit, located in Dexing county, Jiangxi provance of southeast china, is a major deposit of famous Dexing porphyry copper ore field, which is located in the exterior zone of the Circum-Pacific Metallogenetic Belt.

德兴铜厂斑岩铜矿床是环太平洋成矿带外带组成部分，位于中国江西省德兴市境内，为著名的德兴铜矿田内的主要矿山。

A few days ago, Jiangsu Kay Metal Co. over again to huge amounts of money successfully in South Africa Sheng-bao Mines Limited and the acquisition in the Democratic Republic of Congo in Lubumbashi in three high-grade copper cobalt mines, invest in the construction of two with an annual output of 8,000 tons of metal The copper cobalt concentrator, is currently the largest single foreign investment project.

日前，江苏凯力克金属有限公司再次出巨资成功入住南非盛宝矿业有限公司，并收购位于民主刚果卢本巴希境内的三座高品位铜钴矿山，投资兴建两个年产8000吨金属量的铜钴选矿厂，是公司目前最大的一笔海外投资项目。

Neither the killing of Mr Zarqawi nor any breakthrough on the political front will stop the insurgency and the fratricidal murders in their tracks.

在对危险的南部地区访问时，他斥责什叶派民兵领导人对中央集权的挑衅行为。

In fact,I've got him on the satellite mobile right now.

实际上 我们已接通卫星可视电话了