查询词典 leaching

By analyzing principle, the investigating project was primarily determined. Then experiments of leaching with hot water, precipitation arsenic by lime milk, solution arsenic by sulfuric acid, reduction, cooling and crystalling white arsenic have been carried out and the optimum conditions of every step have been obtained.

在分析基本原理的基础上，初步确定了研究方案，按照方案分别进行了热水浸出、石灰乳沉砷、硫酸溶砷、还原、冷却结晶白砷等试验，得到了各个工序的最佳工艺条件。

Pretreatment of arsenical refractory gold concentrate - Leaching by sodium dichromate ;2. The solution of sulfuric acid was added dropwise to the reaction vessel contained 1,3-dichloro-2-propanol, sodium dichromate and water.

将硫酸水溶液滴加到1，3-二氯-2-丙醇与重铬酸钠水溶液的混合物中，在温度23~27℃的条件下搅拌反应5 h，重铬酸钠∶1，3-二氯-2-丙醇=1∶2，此条件下收率为79。

The existence of proper amount of Ag〓 in the leaching solution may accelerate the biooxidation of arsenopyrite.

在上述工作的基础上，本工作还对河北半壁山含砷硫化物金精矿进行细菌氧化脱砷和随后氰化提金的实验。

In the catalyst after leaching, other than nanoscaled Ni crystallites, boundary area is observed from HREM. These areas are low contrast and high brightness. The atomic density of these areas should be low, therefore, it is suggested that they are rich in voids and phosphorus atoms.

高分辨电子显微观察显示，合金脱铝形成镍纳米晶的同时，还形成了纳米尺寸的低密度、高亮度的界面区域，该区域与其它文献中提到的孔洞尺寸相当，但认为它应该是富含铝及大量缺陷的结构疏松区。

The invention is suitable for the leaching exploitation field of uranium, copper, aurum, rare earth and so on.

适用于铀、铜、金、稀土等矿物的溶浸开采领域。

CALCINING AND LEACHING OF BARITE WITH DEPOSIT FORM AND HEAT LIQUID FORM.

沉积型和热液型重晶石的煅烧和浸取。

A layer of barrier layer in the growth rings on a leaching by rainwater, and then grow moss green.

一层一层垒在成长的年轮上，经雨水一淋，再长出绿色的藓苔。

Flaveria bident on the allelopathic effect s of wheat seed is examined by the specimen in cotton field and hillside place nearby Hengshui lake,by opposing two flaveria bidentis of different distilled water to progress activated material leaching,compounding three kinds of density(10%、50%、100%) of the original solution concentration.

以衡水湖附近棉地、坡地的黄顶菊为样本，进行蒸馏水活性浸提，将浸提液配制成10%、50%、100%3种浓度蒸馏水作为对照，进行了黄顶菊对小麦种子化感作用影响研究。

The adoption of leaching treatment is effective in mitigating the effect of blackish water irrigation.

两种灌溉水平下，含水层盐分有增加趋势，但增加幅度较小，在4%~9%之间。

The effect of various factors on leaching, the catalysis of Ag〓 to chalcopyrite and bornite and the catalysis of FeS〓 to chalcopyrite were investigated.

考察了各种因素对细菌浸出效果的影响以及Ag〓对黄铜矿和斑铜矿、FeS〓对黄铜矿的催化作用。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。