查询词典 zinc sulfate

Lead ; zinc ; smoke dust ; hydrometallurgy ; comprehensive utilization

铅； 锌；烟尘；湿法冶金；综合利用

New reactions induced by low-valent titanium reagent;;dReactions catalyzed by active zinc dust

中文题名低价钛试剂引起的新反应；活性锌粉催化的反应

The experimental results showed that ultrasonic cleaning of broznes in dilute sodium hexametaphosphate solutions are effective, this method was used for the brozne treatment firstly. We have also improved "zinc dust treatment method"and satisfactory results were obtained.

在工作中，首次应用了在六偏磷酸钠稀溶液中超声波清洗青铜器这一方法；对锌粉转化封闭有害锈方法进行了改进；选用ParaloidB－72材料做为青铜器苯骄三氮唑处理后的封护材料。

Prior painting, the surface shall be cleaned of oil, moisture, dust ,zinc, salt and other foreign material with thinner, fresh water , wore brush and etc.

在喷漆前，表面应该用稀料，淡水，钢丝刷等清除油，湿气，灰尘，锌，盐和其他杂质等。

Commercially available 2 nitro 4 methoxyaniline was used as starting material and converted via reduction with zinc dust and cyclization with potassium ethyl xanthate into the title compound,suggesting that this procedure is suitable for industrial production.

以4 甲氧基 2 硝基苯胺为原料，经锌粉还原后，再与乙基黄原酸钾环缩合制得2 巯基 5 甲氧基 1H 苯并咪唑。结果收率80%。结论该方法简单易行，适合工业化生产。

Imino-1, 3-thiazetidines is the basic structure of a kind ofbioactive herbicide and insecticide. Our method has advantage in synthesis highly substituted2-imino-1, 3-thiazetidines, therefore it has practical value to some extent. We also researched the reactions catalyze by active zinc dust.

提供了成四员噻吖丁啶杂环衍生物的方法。2-亚胺基-1，3-噻吖丁啶是一类具有生物活性的除草剂及杀虫剂的核心结构，我们的方法在合成多取代的2-亚胺基-1，3-噻吖丁啶方面有一定的优越性，从而具有一定的实用价值本文另一部分的工作是探讨锌粉催化的反应。

As a result of copper and zinc in the moon dust content, refineness fat…etc, interventioal, zincic refineness is zincic reaumuria; the provision of high, its color is green, it sold in the market of powdered gold of the red powder, she has grown up powder, monochamus powdered gold.

金粉中因铜锌的含量不同，色泽也有所不同，含锌量低，色泽就偏红；含锌量高，色泽就偏青，故在市场出售的金粉有红金粉、青红金粉、青金粉之分。

"The process includes contacting the finely ground ore with the cyanide solution, separating unwanted solids from the clear solution, and recovering the precious metals from the solution by precipitation with zinc dust."

该方法包括三个步骤，即将磨细的矿石与氰化物溶液接触；把固体物从净溶液中分离出来；通过加入锌粉沉淀从溶液中回收贵金属。

The dust was first mixed with NaBH4 powder to adjust the H/Cl ratio. Then, the sample was roasted at low temperature to promote the efficiency of dehalogenation/hydrogenation reaction. By way of Cl- titration, it was found that the roasting temperature (300℃~500℃), roasting time (5 to 25 minutes) and H/Cl ratio (6.0 to 20.0) would change the dissolution of Cl- from 0.0% to 17.5%. After caustic roasting and leaching of the dust, the zinc (17.4 g/l) and lead (1.6 g/l) recovery ratio were found to be 82.7% and 61.8% respectively.

利用NaBH4在低温可促进氯化冶金反应的进行，经由氯离子浓度滴定，发现随著焙烧时间、温度及H/Cl比值之调整，氯离子之溶出量变化亦相对改变，此结果说明在使用NaBH4调配H/Cl比值由6.0~20.0的变化下，烟尘中的氯成分在低温(300℃~500℃)焙烧5~20分钟，可与金属氧化物发生氯化反应，氯离子溶出量显示有0~17.5%不等之变化量。

In this study, in order to promote the anti-corrosion performance of outdoor steel structure, some coating systems in common use were evaluated including aluminum tripolyphosphate painting system, inorganic zinc dust painting system, metal sprayed coating system, plastic sprayed coating system, complex thermal sprayed coating system and field maintain system.

为了提高特殊腐蚀环境下外露结构与设备之防蚀性能，本文针对目前常见的钢材涂装系统，包括三聚磷酸铝、无机锌粉漆、金属熔射、塑胶熔射、复合熔射及现场维护等涂装系统进行盐雾及大气曝露试验，希望藉由实地腐蚀试验，累积更多腐蚀数据及经验。

This was not understood at the time, and therefore went unaddressed, until ascension became so distorted that we chose to stop ascending and wait for a time when all records would be revealed.

这在当时没有被了解，因此进行着无改编，直到提升变得如此扭曲，我们选择去停止提升并等待所有记录能被揭示的那一天。

The attack＇s nuisance value is increased because mobile phone networks also send notifications of new voicemail by sms,so an attacked phone may stop advising of new voice messages too,it warned.

它警告：这种攻击的危害增长是因为移动电话网络也会通过短信发送新语音邮件的通知。所以受到攻击的手机可也以停止新的语音信息的提示。