科技     

《国土资源》2007,(1):46

中国首个“数字矿山”样板工程新鲜出炉；江苏破解冶炼废渣资源化利用难题；我国将在2007年5月首次钻取可燃冰实物；大庆突破油田油气勘探三大领域；南极洲发现幼年蛇颈龙化石；  相似文献   

锰银精矿及粗银粉中银的容量法快速测定     

吴月强  黄宇光 《岩矿测试》2004,23(4):315-316

对某地锰银精矿及冶炼半成品——粗银粉，采用湿法溶样后，直接采用硫氰酸钾容量法测定Ag，对w(Ag)为0．22％～70．96％的样品，测定结果与原子吸收法以及火试金容量法结果相符。  相似文献   

信息角     

《矿产与地质》2004,18(2):195-196

新疆有偿出让探矿权、采矿权,获款达2 .5 7亿元。新疆新闻网消息:年初,新疆一次性公开出让16个矿山的探矿权、采矿权,拜城县梅斯布拉克煤矿二井田和三井田探矿权联合竞拍底价为14 0 0万元人民币,最后,以1.2 5亿元的天价竞拍成功。至此,随着新疆采矿权、探矿权市场初步形成,新疆有偿出让各类矿山的探矿权、采矿权所获价款已达2 .5 718亿元。新疆是矿业大区,目前已发现矿种138种,占全国发现矿种的80 .7% ,探明矿产地4 0 0 0多处,拥有矿山企业近30 0 0家。2 0 0 3年,矿业总产值占新疆工业总产值的2 8%。青海省最大粗铅冶炼技术改造项目正式开工…  相似文献   

史料考证与找矿(之四)：个旧锡矿   总被引：1，自引：0，他引：1  

薛步高 《云南地质》2002,21(4):447-455

著名的个旧锡矿，据史料在元廿七年（1290年），率先在老厂矿区银铜矿开始采银（铅）-锌矿。清康熙四十六年（1707年），始由官方主持大规模开发砂锡矿，直至民国初年（1910年）都以采-冶砂锡为主，元廿七年后，银硐，黄茅山，竹林山，龙树脚等老硐深部，相继发现并转入原生锡矿开采。个旧300余年的采-选-冶开发史，使当地矿工在识别砂锡，脉锡不同矿石类型（荒），涮碗目测品位，水力采矿（冲荒尖），水力洗选（溜口），土法炼锡，锡锭表面“花口”识别等诸多领域，创造出一套完整的采-选-冶工艺，在中国矿业史上作出重大贡献。  相似文献   

卓有成效的炼金者     

亚德利  B 《国土资源信息化》1992,(3):27-29

  相似文献   

株洲冶炼厂拟建废渣场环境地质评价     

陈德生 《湖南地质》1994,13(4):224-226

株洲冶炼厂拟建废渣场环境地质评价陈德生（湖南省地质矿产厅水文一队株洲４１２００３）关键词渗出液，环境地质ＥｖａｌｕａｔｉｏｎｏｆｔｈｅＧｅｏｌｏｌｇｉｃＥｎｖｉｒｏｎｍｅｎｔｏｎｔｈｅＳｌａｇＳｉｔｅｏｆＺｈｕｚｈｏｕＳｍｅｌｔｅｒｙ￥ＣｈｅｎＤｅｓ...  相似文献   

Exposure of smelting workers to mercury vapor with indigenous method for mercury smelting in Wuchuan areas, Guizhou Province, China     

Ping LI Xinbin FENG Guangle QIU Minishi Sakamoto Xiaojie LIU 《中国地球化学学报》2006,25(B08):234-234

Small-scale mercury smelting activities with indigenous method are always extensive in the Wuchuan area, northeastern Guizhou Province, China. Because of the simple processes without any environmental protection, a large amount of mercury vapor released to the ambient air during the processing of cinnabar roasting. So the health of the workers may be negatively affected through inhalation of the mercury-polluted air. Mercury, creatinine and β2-MG contents in urine among the workers in the study areas and the residents in the control site （Changshun County） were determined to discuss the health impact of mercury vapor exposure to the workers in the study areas. Health examinations also were carded out to identify clinical symptoms of mercury poisoning for the smelting workers. Results indicated that the geometric mean value of urinary mercury for the smelting workers was g/g Cr μg/g Cr （N=22）, significantly higher than 1.24 μg/g （N=54） for residents in the control site. β2-MG as a renal biomarker can be used to study human nephrotoxicity at an early stage and it is most useful to define effects for assessing re-absorption function to indicate tubular injury. The results showed a serious adverse effect on renal system for the smelting workers due to mercury exposure. Several workers have already manifested some clinical symptoms of lightly chronic mercury poisoning and the symptoms include finger and eyelid lightly tremor, gingivitis and blue mercury line in mouth. The study illuminated that the workers in gaged in indigenous mercury smelting in the Wuchuan area were seriously exposed to mercury vapor,  相似文献   

我国铅锌行业主要面临3个突出矛盾     

林方 《西部资源》2014,(3):44-44

<正>5月16日,中国有色金属工业协会铅锌分会二届三次理事会在深圳召开。国务院参事、中国有色金属工业协会会长陈全训出席会议并作重要讲话。陈全训在讲话中首先通报了一季度有色金属工业总体运行情况,然后重点谈了对当前我国铅锌行业发展的几点认识,他说,当前我国铅锌行业主要面临三个突  相似文献   

我国镍市未来走势前景广阔     

《西部资源》2014,(6):48-49

<正>我国镍消费区域主要集中在华东、华南、华北、西南、东北等地区。华东地区是我国镍消费最大的区域,约占我国镍消费量的55%,其中,江苏、浙江和上海是我国不锈钢冶炼企业的集中地,对镍的消费较高。而华南地区则是我国电池、电镀行业生产基地。另外,广东地区也有一些较大的不锈钢冶炼企业,对镍的消费也比较多,约占我国镍总消费量的25%。而华北地区则主要因为拥有我国最大的不锈钢企  相似文献   

Study on soil heavy metals contamination of a lead refinery     

Yan Shu  Shengjia Zhai 《中国地球化学学报》2014,33(4):393-397

The contents of Pb, Cd, Cr, As, and Hg was investigated in the neighboring areas of a lead smelting enterprise and the metals contamination of soil was evaluated with the methodologies of the single factor index and Nemerow integrated index. It is found that the content of heavy metals in the neighboring areas has no obvious difference from the reference points. And the soil contamination of heavy metals varies by elements, the contamination index follows the pollution order： Cd〉Hg〉Cr〉As〉Pb. The pollution degree of Cd is at high level and Hg at low level, but Cr and As reached the warning level. Therefore, the lead smelting enterprises should not only control lead but also other heavy metals as Cd.  相似文献