Deutsch-Chinesische Enzyklopädie, 德汉百科

       
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Catalog Energy resource

燕山石化
中国石油化工股份有限公司北京燕山分公司(简称燕山石化,原称北京燕山石油化工公司、北京燕山石油化工股份有限公司)创办于1970年7月20日北京房山区燕山,主要业务为制造及销售三类主要石油化工产品;即(i)树脂及塑料;(ii)合成橡胶;及(iii)基本有机化工产品。本公司的主要生产设施包括71万吨乙烯装置(年设计能力)、高压聚乙烯装置、聚丙烯装置、低压聚乙烯装置、苯酚丙酮装置、顺丁橡胶装置及丁基橡胶装置。

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麗水煉油廠 丽水炼油厂

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云南铜业/云南铜业股份有限公司

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云南锡业集团/云南锡业集团(控股)有限公司

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水泥制造/Cement manufacturing

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中天钢铁集团

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集中供暖
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铁锂云母

 

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锆石
http://www.net4info.de/photos/cpg/albums/userpics/10001/Zirkon.jpg
锆石[gào shí](英文名称:zircon)是一种硅酸盐矿物,它是提炼金属锆的主要矿石,含有Hf、Th、U、TR等混入物。锆石广泛存在于酸性火成岩,也产于变质岩和其他沉积物中。锆石的化学性质很稳定,所以在河流的砂砾中也可以见到宝石级的锆石。锆石有很多种,不同的锆石会有不同的颜色,如黑、白、橙、褐、绿或无色透明等等。经过切割后的宝石级锆石很像是钻石。锆石过去还被叫作锆英石
中文名
锆石
英文名
zircon
别    称
锆英石
化学式
ZrSiO₄
密    度
3.90~4.73 g/cm³
外    观
透明至半透明,无色、紫红、金黄色、淡黄色
应    用
定年,定温
硬    度
7.5-8
比    重
4.4-4.8
晶体结构
四方晶系
光    泽
玻璃至金刚光泽,断口油脂光泽
 
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