1) leaching characteristic of harmful elements

有害元素的浸出特性
1.
The leaching characteristic of harmful elements in vanadium slag,under conditions of different production technologies and different time they are discharged,of vanadium plants in Suizhou city,Zhushan and Yunxi countries are studied.
对随州、竹山、郧西等地钒厂在不同生产工艺、不同排渣年份条件下的钒渣中有害元素的浸出特性进行了研究。
2) hazardous elements

有害元素
1.
Migration of hazardous elements in acid coal mine drainage;

煤矿酸性矿井水中有害元素的迁移特性
2.
Two methods have been used to determine the toxicity and content of hazardous elements(two major indicators for eco-type of cable materials) of cable materials,i.
采用了电缆材料绿色化的两大指标———毒性和有害元素含量的两种检测方法,即细胞毒性试验和电感耦合等离子体发射光谱仪法,认为这两种方法具有简便、精确、快速和省钱等优点,文中也提供了某电缆阻水膏和某种电缆护套料分别进行毒性试验和有害元素检测和分析。
3) Harmful elements

有害元素
1.
The primary study on the distribution of harmful elements in Shendong coals;

神东煤中有害元素分布特征初步研究
2.
Removal of harmful elements from Morinda officinalis How using supercritical CO_2 extraction with chelating agents;
超临界CO_2配合萃取巴戟天中的有害元素
3.
Comparison on intake status of harmful elements between China and some developed countries;
中国与一些发达国家膳食有害元素摄入状况比较
4) Harmful element

有害元素
1.
Determination of harmful elements in aluminium alloys for the tin of beverage by inductively coupled plasma atomic emission spectrometry;
ICP-AES法测定易拉罐铝合金中的有害元素
2.
Nay,DRI Could dilute harmful element,reduce nitrogen content and increase steel purity.

介绍了直接还原铁从普通钢试用到限动芯棒冶炼中的应用情况,结果表明直接还原铁适于在冶炼高质量钢时使用,并有优异的稀释有害元素,降低钢中氮含量并提高钢纯净度的作用。
3.
On the other hand,the aboundance values of the harmful elements such as Sn,Pb,Zn and As in th.
铁矿石中有害元素Sn,Pb,Zn,As超出允许范围,但分布有一定规
5) deleterious element

有害元素
1.
Effect of Deleterious Element Sn and Pb Content on Hot Workability of Stainless Steel;

有害元素Sn、Pb含量对不锈钢热加工性能的影响
2.
By the systemic simulation experimentation, we studied the infiltration and transformation rules of the main deleterious elements in flyash on condition of ash ponds or landfills being normally operated.
通过系统模拟实验研究了粉煤灰中主要有害元素在灰场正常运行条件下的浸出与迁移规律。
6) Hazardous element

有害元素
1.
Forward-looking of the Restriction of hazardous elements and Non-destructive testing methods in Jewelry products
饰品中有害元素的限定及无损检测方法的前瞻
2.
Based on the analysis and test of 41 elements, the occurrence, mechanism and environmental effect of 19 potentially hazardous elements in samples of coal seam 9 form Xinzhouyao Coal Mine were discussed.
基于 41种元素的测试分析 ,探讨了大同忻州窑矿 9号煤层中 1 9种潜在有害元素的分布特征、赋存机理和环境效应等问题 。
3.
This paper mainly use static simulation method, and reseach some hazardous element in coal gangue from N.
在雨水和地表水的淋滤作用下,其中的一些有害元素会进入水体和土壤环境,从而造成水体质量下降,土壤功能破坏,影响生态发展,危害人体健康。
补充资料:氨浸出
氨浸出
ammonia leaching
o「、J Inehu氨浸出(ammonia leaehing)J下J含氨的水溶液作为浸出剂的浸出方法。氨是·种配位体,能与某些金属离子形成配合物(络合物)进入溶液。浸出过程一般通入氧作为氧化剂,氧化被浸出固体物料中的有价组分。氨浸出可在常压或加压下进行。含自然铜、氧化铜或碳酸铜的矿石,可在常压下浸出;而含铜、镍、钻、锌等硫化物精矿,则采用加压氧氨浸出,浸出温度通常为358一373K,氧气压力为0.7一1.4MPa。浸出液经蒸馏除去的氨,可用水吸收后循环使用。氨浸出的优点是能处理含铁高和含碱性脉石的矿物原料,设备的防腐问题容易解决。由于氨具有挥发性,氨浸出需要在密闭反应器内进行。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条