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- In this paper the preparation method of surperpurity europium oxide by zinc powder reduction extraction chromatography is expouned. 简述了采用锌粉还原萃取色层法制取超高纯氧化铕的工艺过程。
- zinc powder reduction 锌粉还原
- Flake zinc powder and the index of flake zinc powder were introduced. 简要介绍了重防腐涂料的应用和特点。
- Keywords diphenylhydrazine;zinc powder;reduction; 二苯肼;锌粉;还原;
- Zinc powder is a kind of deep gray powder, which consists infinitive form of circular particle, specific gravity 7. 本品为深灰色粉末,由不定形或圆状颗粒组成,比重为7。
- The major production is electrolyzed zinc.It also produces vitriol, zinc oxide, zinc alloy, zinc powder etc. 公司以生产电解锌为主，同时还有硫酸、氧化锌、锌合金、锌粉等产品。
- This process not only avoided direct esterification of 2-aminobenzoic acid in low yield,but also eliminated the waste water caused by Na2S or Fe powder reduction. 该工艺不仅收率高于邻硝基苯甲酸还原酯化法,而且消除了采用硫化钠或铁粉还原产生的废水。
- This paper describes a new technology for production of rongalite based on sodium pyrosulfite reduced by zinc powder and reacted with formaldehyde. 斜述了用焦亚硫酸钠为原料,经锌粉还原与甲醛加成反应,生产次硫酸氢钠甲醛的新工艺。
- In the recovery of copper and zinc, etc. from waste hydrochloric acid by zinc powder replacement, zinc chlorinate liquor is obtained. 研究了在废盐酸溶液中用锌粉置换回收铜、铅等金属得到的氯化锌溶液，采用两步调碱和磁场作用制备碱式碳酸锌。
- Trichloropyridine was synthesized by reacting pentachloropyridine with zinc powder in an alkaline medium in the presence of phase transfer catalyst. 以五氯吡啶和锌粉为原料,在碱性条件下用相转移催化剂催化还原合成2,3,5-三氯吡啶。
- The production of superfine zinc powder is an effective way to develop the zinc source and to increase the added value of zinc. 超细锌粉是一种新型材料,生产超细锌粉是开发利用锌资源,提高其附加值的有效途径。
- The basic principle for production of zinc powder was discussed,and the technical measure for good index was also raised. 论述了电炉生产锌粉的基本原理和在实践中稳定生产并取得较好指标的技术措施。
- The wastewater generated from 2,4-xylidine production by iron powder reduction process has been treated with a close recycle technology with steam stripping,realizing zerodischarge of the wastewater. 对铁粉还原法生产2，4-二甲基苯胺过程中产生的废水，采用蒸发为水蒸气后回用于汽提的全循环工艺，可实现零排放。
- The pure zinc chloride solution can be obtained through burning to remove methanol,dissolving to seperate zinc powder and purifying to remov... 通过实际生产运行,取得很好的经济效益,同时避免了环境污染。
- The composition of flake zinc powder based of heavy duty anticorrosive epoxy coating was described, and function of each composition was introduced. 讨论了鳞片状锌基环氧富锌涂料的组成，各组分的作用以及涂料的配方设计。
- Main products of zinc smelting operation sets smelting technology, lead-zinc mine, zinc concentrate, lead concentrate, Xinding, lead ingots, metal zinc powder. 主要经营产品氧化锌矿冶炼成套冶炼工艺，铅锌矿，锌精矿，铅精矿，锌锭，铅锭，金属锌粉。
- Excessive zinc powder was used. 锌粉过量;
- We are one large international trade co., Ltd. And are exporting furniture, sweater and light industry products to russia and importing zinc powder and zinc ingots from federal of russia. 我司主营进出口贸易,大量出口俄罗斯钢木家具,毛衣及轻工产品。进口俄罗斯有色金属,如锌锭锌粉。
- Zinc powders were sieved， the sizes and size distribution of zinc powders were analyzed. 将所制备的锌粉进行了筛分，对粒径的大小和分布进行了分析。
- The properties of alkane surfactant with carboxyl were studied in order to prepare ultrafine flake zinc powders. 摘要以制备超细鳞片状锌粉为目的，对羧酸烃类表面活性剂进行了研究。
