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- Gold, silver, valuable metals and ornaments thereof. (一)金银等贵重金属及其制品;
- Gold is still a valuable metal but is often found in the mountain streams. 金子仍然是一种贵重金属,但是常常能在山里的溪流中找到。
- Gold is a valuable metal but is often found in the mountain streams. "金子是一种贵重金属,但是常常能在山里的溪流中找到。"
- By comprehensive utilizations, many valuable metals may be extracted from coexisting (or associated) ores. 重点分析,讨论了金属矿山共(伴)生矿种和尾矿综合利用的经济价值和环境效益。
- The work of trying to change less valuable metals into gold was called alchemy, and the men who did this work were alchemists. 这种将不太贵重的金属变成金子的过程被称为“炼金术”,从事这行的人被称为“炼金术士”。
- Precious Metal A general term used to describe valuable metals such as gold, iridium, palladium, platinum, and silver. 贵重金属黄金、铱、钯、白金及银等有价值金属的统称。
- The valuable metals such as antimony and lead from the acidic leaching residues were recoveried by vacuum carbothermal reduction. 以含锑铅复杂氧化物的酸浸渣为原料,采用真空碳热还原方法回收了渣中的锑铅等有价金属。
- The treatment of Pb Bi Ag sulfide ore and recovery of valuable metals with the corporation of pyro and hydro metallurgical process are investigated. 研究采用火法湿法联合工艺处理铅铋银硫化矿,综合回收有价金属。
- A new idea was proposed for processing manganese nodules into Mn-Fe alloys or valuable metals by FFC Cambridge process.Appl... 提出了使用FFC剑桥工艺处理锰结核得到锰铁合金或有价金属的新思路,并介绍了锰铁合金的用途。
- Copper occurs in nature mixed with other minerals and valuable metals in ore, and the proportion of copper in the ore can vary considerably. 在自然界中,铜与矿石中的其他矿物和贵金属混合在一起,并且矿石中铜的含量有着千差万别。
- The silver can be recovered from lead anode slime from Luoding by chlorination.Total recovery rate of silver is more than 99%,and all valuable metals can be recovered effectively. 用氯化法处理罗定铅阳极泥能较好地回收金属银,银的总回收率大于99%25,其它各种有价金属亦得到有效回收。
- This paper describes the operating practice for comprehensively recovering valuable metals from lead anode slime residue left after recovery of gold and silver. 叙述了从铅阳极泥回收金银后的渣料中综合回收有价金属的生产实践。
- The article analyses the technology of treatment mineral acidic wastewater which contains the valuable metal ions. 分析了处理含重金属离子矿山酸性废水的处理工艺。
- Because gold has been universally regarded as a very valuable metal, national currencies were for many years judged in terms of the so-called 'gold standard'. 一般来说,黄金被视为一种非常贵重的金属,所以多年来国家的货币都是通过所谓的‘金本位制’来确定的。
- Because gold has been universally regarded as a very valuable metal, national currencies were for many years judged in terms of the so-called"gold standard". 由于黄金已被普遍认为是一种非常贵重的金属,美国的货币多年来就是以所谓"金本位"来衡量的。
- The employment of hydrometallurgical method to treat anode mud of lead containing high bismuth and antimony and recover synthetically valuable metals as gold,silver etc was introduced in this paper. 本文介绍了采用湿法工艺流程处理高铋、锑、铅阳极泥,并对金银等有价金属进行综合回收。
- In order to recover the valuable metals from the ore in an economic and effective way, an experimental study was carried out on a new heap leaching process based on acidified granulation. 为经济有效地回收这种矿石中的有价金属,进行了酸化制粒堆浸新工艺的试验研究。
- This paper analyzed the mechanism of precipitation floatation, discussed the technology of selective precipitation floatation, the method of sulfide precipitation floatation can treat wastewater containing heavy metal ion and reclaim valuable metals. 摘要对沉淀浮选机理进行了分析,讨论了选择性沉淀-浮选技术,论述了硫化沉淀浮选法不仅能处理矿山含重金属离子废水,同时还能回收其中的有用金属。
- The new technique of biohydrometallurgy will bring novel opportunities and challenges to recovery the valuable metallic elements from the low grade refractory sulfides. 生物湿法冶金技术与传统矿业氧化工艺相比,成本低、无污染,具有广阔的工业应用前景。
- Originally, a valuable metal (gold, silver or copper) served as constant store of value, and even today the American dollar is technically"backed"by the store of gold which the US government maintains. 起初人们用某种贵重金属(金、银或铜)作为有恒性的价值贮存体,甚至今天的美元从技术上说还是美国政府以其所拥有的黄金贮存量作为"后盾"的。