查询词典 leaching

It is concluded that the heap leaching process is a dynamic one with multiphase chemical reactions in which the leaching-rate of target metals is dependent on the rate of the chemical dissolution as well as the diffusion of the reactants and resultants.

分析了溶浸剂的作用机理，认为堆浸浸出过程是一个多相反应动力学过程，浸出速度与溶解化学反应速度、反应物和生成物的扩散速度等因素有关。

In order to overcome disadvantages of conventional leaching technique such as high energy consumption and low productive benefit, and get better utilization of uranium resource, the study on uranium extraction from certain alkaline uranium ore with heap leaching process have been carried out according to the characteristics of the ore such as high content of carbonate and low grade of uranium.

为了克服常规工艺高能耗、低效益的缺点，充分利用铀矿资源，针对某碱性铀矿石碳酸盐含量高、铀品位低的特点，开展了堆浸法提取铀的研究。

The leaching ratio of copper from the copper slag, roasted at 680℃ for 4 hours, attains approximately 92% under the conditions of 2 mol/L sulfuric acid leaching for 2 hours at 70℃.

在680℃焙烧4h后，采用2mol/L硫酸于70℃浸出2h后可以达到良好的浸出效果，使铜的浸出率达到92%以上。

To investigate the leaching process in the prophase of leaf litter decomposition in water in subtropical region of China, we studied the leaching mass losses of leaf litter of 8 common species in Guangzhou in lentic or running water.

为了解亚热带地区水体中树叶凋落物在分解初期的淋溶规律，比较研究了广州地区8种常见树种的树叶凋落物在静水和流水环境中淋溶量的变化。

After being oxidated for 34 h, and then the contents of Fe2+ in the 9K liquid solution with 4×10-4mol/ L xanthates, dithiophosphates and D-250 added inreased from 4.03 g/L to 4.64, 4.77 and 5.91g/L, respectively. After leaching for 35 d, the leaching rates of Zn are 92% and 61% respectively. It shows that the flotation reagents (xanthates, D-250) have great effect on the activity of bioleaching bacteria.

研究结果表明：添加4×10-4mol/L的丁基醚醇、乙基黄药、丁胺黑药，氧化34 h后，使 K液体培养基中的Fe2+质量浓度由4.03 g/L分别增加至4.64 g/L， 4.77 g/L和5.91 g/L；浸出35 d后，精矿中的浸出率分别为92%和61%，这进一步验证了浮选药剂对浸矿细菌活性的影响。

Results show that:(1) X-ray fluorescence spectrometer is the best method to detect total concentration of heavy metals in eco-cement.(2) Solid waste-extraction procedure for toxicity of solid waste is not suitable for cement system.(3) Long-term leaching test can be used to predict the long term leaching characteristic under certain situation.

试验结果表明：(1)荧光光谱法是最优的总量测定方法；(2)目前我国常用的浸出毒性测定方法不适用于水泥体系；(3)长期浸泡方法可用于测定特定条件下重金属的长期浸出性。

All of the studies in this paper, including the study of leaching behavoirs of HLW glass under repository conditions, low oxgen and multi-barrier media; the geochemical model PHREEQC used for calculating the leachate compositions and sediment phases on the glass surface; A Monte Carlo model established and used for study of leaching behavior of HLW-glass; as well as the high-temperature self-propagating synthesis used for immobilization of Sr element in perovskite synroc, are the front research works of this field in the world, and obtained some significative results in theory and practice.

本研究所作的高放废液玻璃固化体在模拟地质处置条件下（低氧条件和多种地质介质）的浸出行为研究，采用了低氧条件和多种模拟地质介质，包括北山预选厂址的花岗岩、膨润土、水泥和Fe〓O〓作为浸出介质，模拟地下水和去离子水作为浸出剂，90℃和150℃两种浸出温度；采用了地球化学模型PHREEQC（version2.7）研究玻璃固化体浸出液中主要元素的浓度以及沉积相的生成；采用蒙特卡罗法建立玻璃固化体的计算模型，对玻璃固化体的浸出行为进行研究；采用了自蔓延高温法固化锶，这些工作都是当前国际上比较前沿的研究课题，采用了先进的分析测试技术，并且作了大量计算，得出了理论上和实践上有意义的结果。

About 30% of sulphur in the ore was oxidized to be SO〓, the other in residue and most of which was in form of α-S. The leaching results were combining efficiency of HNO〓, Fe〓, Cu〓 and O〓, and NO〓 in the leaching solution could be recovered and recycled.

矿物中约30%的硫被氧化成SO〓，70%留于渣中，除少量为硫化物形式，绝大部分以α-S单质存在，浸出过程硝酸可回收循环利用。

Two new technologies, at ambient temperature leaching and by self-catalysis leaching with thiosulfate, have been developped for gold extraction from copper-containing concentrate.

对氰化易溶铜较高的金精矿详细研究了硫代硫酸盐常温常压浸金和自催化浸金新工艺及浸出液中金的回收。

Characteristics of elements leaching from waste printed circuit boards was studied through sand column tests. Leaching concentrations of elements from waste PCBs increased greatly with decrease of pH.

通过室内土柱淋溶实验，研究模拟酸雨对废弃线路板组成元素的影响，并分析了浸出液的组分特征和变化规律。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷