1. 2. 3, 重点句型及难句分析: Our modern lives depend on metals known as rare earths.句意:我们的现代生活依赖于被称为稀土的 金属。 depend on/upon 意为“依靠,依赖";known as rare earths 是过去分词短语作后置定语,修饰 metals 1.根据第二段内容可知,稀土被用于电脑屏幕、 手机和其他电子设备,医学...
Here are electronics parts from old computers. Recycling the rare-earth metals in these parts might help meet demand for these highly valued materials. ADAM SMIGIELSKI/ISTOCK/GETTY IMAGES PLUS Our modern lives depend on metals kno...
Rare earth recyclingPermanent magnetsNi-MH batteriesAlthough rare earth metals are more abundant than their name would indicate, disruptions of their supplychain have occurred recently, and it is no surprise thatthe US Department of Energy (DOE) and the European Union (EU) Commission have listed ...
in recent years REEs have become strategically critical for economies around the world which is primarily due to the shortage of discov- ered minable resources. 1 Before 1948, the placer deposits of Brazil and India were the chief sources of rare earth metals for the rest of the world. With...
One option being explored is recycling rare earth metals from used products. You might think it would be easier to recover rare earths from products than extract them from the ground, but it’s not as easy as it sounds. Given the importance of these products to modern living, governments ar...
has generated interest in recycling the metals from used electronic devices as an alternative source. However, many devices contain less than one gram of valuable REEs, and are designed in such a way that the metals are difficult to separate from other components. Once they have been rem...
Rare earth metals, commonly used in the production of high-tech goods, are desperately needed for the European economy. China has a monopoly on the supply of these metals, producing up to 97% of the world's supply. In July, China placed export restrictions on gallium and germanium metals,...
Hitachi was selected by Japan's Ministry of Economy, Trade and Industry to participate in its project to promote recycling of resources, launched in fiscal 2009. The project's goal is to find technology for recycling rare earth metals from "urban mines," such as high-performance magnets from ...
Nearly 200 minerals contain >;0.01% RE metals but only a dozen have high enough quantities to be economically extractable. In this article, we will review the need for rare earth recycling, options available to recycle rare earth metals, and the possibilities and difficulties of recycling rare ...
Rare earth doesn'tean patchfoilhat's endangeredsuch. Itefersoeriesfetallic elementshat while plentiful,re difficultoind inommercially viable quantities.he ... Lucas,D'Souza - 《Minerals & Metals Review》 被引量: 0发表: 2011年 Current Status of Technologies for Recycling Rare Earth Metals not ...