矿砂

含碳铁矿砂压块的还原研究

Investigation on the reduction of carbon-bearing iron ore sand compacted lump

针对此问题，研制并提供全套工艺及80t/h铁矿砂生产设备。

In view of this , a complete technology and a 80 t / a equipment for producing iron ore sand has been developed and provided .

每吨矿砂的净利达20美元。

The net profit amounts to 20 dollars per ton of ore.

他们已从矿砂中提炼了一种稀有金属。

They have abstracted a rare metal from the ore.

工人从矿砂中提炼金属。

Workers abstract metal from ore.

铬铁矿砂中主要成分的X射线荧光光谱法测定

X-ray Fluorescence Spectrometry Determination of Chromite by Powder Briquette Pressed Technique

与此同时，淡水河谷周五表示，中国企业集团——招商局集团（ChinaMerchantsGroup）将建造10艘超大型矿砂船，并将它们租给淡水河谷。

Meanwhile , China Merchants Group , a Chinese conglomerate , will build 10 VLOCs and charter them to Vale over 25 years , Vale said on Friday .

第一章论述了PVC（聚氯乙烯）-丁二酮肟这种复膜树脂的制备过程，并用所制得的树脂作为常规离线色谱柱的固定相，富集分离尾矿砂中的微量钯。

PVC-dimethylglyoxime double membranes resin that was packed into conventional packed column was used to separate and concentrate palladium in tails .

研究了用蒙脱石、稻草和鸡粪作为改良剂对铜矿尾矿砂有效养分、有效态重金属含量、pH值以及对尾矿砂上黑麦草生长的影响。

A study was conducted on effect of montmorillonite , rice straw and fowl dung , used as amendment , on growth of ryegrass on copper mine tailing .

中澳铁矿砂谈判对中国产业经济影响的CGE研究

The Effect of China-Australia Iron Ore Negotiation on China Industrial Economy : A CGE Approach

本文分析了单壳VLCC在IMO新规则的限制条件下，改造成大型矿砂船的可行性。

The paper accounts for the background , feasibility to reconstruct the single side VLCC to ore carrier .

利用除铁用锰矿砂（PGM）为处理剂进行罗丹明B与甲基橙模拟废水的静态脱色试验，并与粉末活性炭（PAC）进行对比。

Manganese ore ( PGM ) and powder active carbon ( PAC ) are used in static experiment to decolorize dyestuffs Rhodamine B and methyl orange wastewater .

用蒙脱石、稻草、鸡粪作为改良剂，研究不同改良剂对铜矿尾矿砂与菜园土混合土壤pH、有效态重金属含量、脲酶和磷酸酶活性以及混合土壤上种植的黑麦草生长的影响。

Effects of different soil amendments ( montmorillonite , rice straw and chicken manure ) on the characters of mixed soil ( copper mine tailing and garden soil ) and on the growth of ryegrass on the soil were studied .

研究了广东省仁化县韶关凡口铅锌矿废弃地尾矿砂对银合欢（Leucaenaglauca）幼苗定居的影响。

The effects of mine tailings in the Pb and Zn mine wasteland on seedling ecesis of Leucaena glauca are studied .

重金属化学形态的分析表明，金川尾矿砂中Ni具有很强的活动性，白银尾矿渣中Cd元素活动性最强，显示出对周围环境具有较大的潜在危害性。

Analyzed results of chemical forms of heavy metals show that Ni in tailings of Jinchuan and Pb in waste slagheap of Baiyin have strong mobility , which suggested that Ni and Pb have the great potential harm to the surroundings .

评价采选作业辅助材料利用的DEA方法最新式四面射流喷射泵以及独特新颖的连接装置而设计的。洗选厂安装容易，便于搬迁，既节省了矿砂的运输费用，又降低了采选作业成本。

DEA Method for Evaluating the Utilization of the Auxiliary Materials in Mining and Beneficiation Production By the use of it , both the haulage cost of sand and operation cost of mining and processing are reduced .

淡水河谷本月与中国最大航运集团中远（Cosco）达成协议后，预计超大型矿砂船年内将被允许靠泊中国港口。

VLOCs are expected to be allowed back into Chinese ports this year after Vale reached an agreement this month with Cosco , China 's largest shipping group .

将铅锌尾矿砂装柱，用pH2～7溶液淋溶50天的结果表明，酸度的提高可以显著地增加尾矿砂中重金属（Pb、Zn、Cu和Cd）的溶出。

Solutions of different pH values ( varied from 2 to 7 ) were used for leaching the Pb / Zn tailings stacked in PVC columns . The results indicated that acid leaching could increase the released amount of heavy metals .

分别以铁尾矿砂和铁尾矿石代替天然砂和普通碎石配制了C30和C60两个强度等级的混凝土。

Concretes of C30 and C60 were prepared with iron mine tailings as fine aggregate and coarse aggregate and with natural sand and common crushed stone separately .

赋矿地层西山窑组（J（2x））砂体碎屑锆石U-Pb等时线年龄为283±67Ma，证实花岗岩侵入体是含矿砂体的主要物质来源。

The U-Pb age of clastic zircons from ore-bearing sandstone is 283 ± 67Ma , which is corresponding to the age of gneissic granite of the provenance area indicating the material source of uraniferous sandstone .

使用DDS-70微机控制电磁式振动三轴仪，对三种尾矿砂试样进行了动强度、动本构关系、动弹模阻尼比三方面动力特性研究。

DDS-70 electromagnet kinetic equipment was used to study the dynamic strength , stress-strain relationship , dynamic modulus and damping ratio of three tailing sand types .

浸矿实验中添加催化剂Ag2SO4后，实验结果表明总体的浸矿效果都比较好，说明Ag+对黄铜矿尾矿砂浸出的促进作用比较明显。

After adding the catalyst Ag2SO4 , the leaching experimental results show that the overall leaching effects are better , indicating that Ag + promote on the leaching of chalcopyrite tailings is obvious .

大型矿砂船甲板开口角隅应力计算的探讨

Discussion to stress calculation of hatch corner in large ore carrier

锦屏磷矿尾矿砂综合利用探讨

Discussion on comprehensive utilization of tailing sand in Jinping phosphate Mine

他要测定矿砂中有什么金属存在。

He wants to determine what metals are present in the ore.

铁矿尾矿砂在公路基层中的应用研究

Research of Iron Tailings Sand Applied to Base of Highway Engineering

水泥尾矿砂混合料物理力学性质试验研究

Test Study of Physical and Mechanical Character on Cement and Tailings Mixture

我国金属矿砂贸易状况及其进口策略

Status of China 's metal ores foreign trade and strategy of importation

230000DWT矿砂船螺旋桨轴加工问题探讨

Discussion on Machining of Propeller Shaft for 230 000 DWT Ore Carrier

天然蒙脱石和沸石改良对黑麦草在铜尾矿砂上生长的影响

Ryegrass growth in Cu mine tailings amended with natural montmorillonite and zeolite