锌

The processes of extracting zinc from zinc-oxide ore in China and overseas are summarized in this article. The processes include pyrometallurgical ones and hydrometallurgical ones.

本文综述了国内外对于氧化锌矿的炼锌工艺，其中包括火法和湿法。

Through thermodynamic calculation and electrochemical analysis of multiple redox reactions on the minerals of galena, sphalerite and pyrite in different system, it could be found that pulp chemical environment in which hydrophobe of collectorless flotation produced was beneficial to reduce collector dosage in existing flotation system; electrochemical analysis on sphalerite had been engaged; and pulp chemical environment of OPF for lead-zinc-iron sulfide minerals and relevant selective measure for collector and modifer were established.

通过对方铅矿、闪锌矿、黄铁矿在水体系、调整剂体系、捕收剂体系中由局部电池造成的多种氧化—还原反应的热力学分析和电化学测试，补充和完善了铅锌铁硫化矿浮选电化学理论。提出了矿物表面无捕收剂疏水体生成的矿浆化学环境有利于降低现有浮选体系中捕收剂用量的观点；成功地进行了闪锌矿的电

Therefore can pass to use the cupric sulfate sulfuric acid potassium for the catalyst take sulfuric acid as to carry the body to digest it, make the amino acids chelate match the conversion for dissolve sex easily of ammonium sulfate and white vitriol, then absorb a fixed amount to try the kind to join 40% sodium hydroside combine under the steam heat function make ammonia the spirit swims to leave out, through cool off to respond the born boric acid with boric acid, be got the total nitrogen content by the standard aqua titration of hydrochloric acid immediately after;But the white vitriol can immediately join the hydrochloric acid hydroxylate , fluoride to turn the in order to cover up, carry on the titration but get the content of its zinc with the EDTA mark liquid..

因此可以通过用硫酸铜硫酸钾为催化剂以硫酸为载体将其消化，使氨基酸螯合锌转化为易溶性的硫酸铵和硫酸锌，然后吸取一定量的试样加入40 %的氢氧化钠并在水蒸气高温作用下使氨气游离出来，经冷却与硼酸反应生成硼酸铵，接着由盐酸标准溶液滴定得到总氮含量；而硫酸锌即可加入盐酸羟铵、氟化氢铵为掩蔽剂，用EDTA标液进行滴定而得到其锌的含量。

The behaviors of supramolecular self-assembly of cabboxyl porphyrin-anthraquinone systems, carboxyl porphyrin zinc-copper systems, porphyrinatozinc-imidazolyl tailed porphyrinatomanganese systems, porphyrinatozinc-anthraquinone hybrids/imidazolyl tailed porphyrinatomanganese systems and porphyrinatozinc-fluorescein hybrids/imidazolyl tailed porphyrinatomanganese systems driven by hydrogen-bonding or coordination-bonding have been studied.

设计、合成了多种新型羧基卟啉、卟啉-蒽醌二元化合物和卟啉-荧光素二元化合物，研究了氢键或配位键驱动的羧基卟啉-蒽醌、羧基卟啉锌-羧基卟啉铜、锌卟啉-咪唑基尾式卟啉锰二元超分子，卟啉-蒽醌二元化合物与咪唑基尾式卟啉锰三元超分子的构建和光诱导电子转移性质。

With the promotion of SiO2/K2O molar ratio, the results showed that the shield effect of impenetration of corrosion medium to substrate was enhanced and the dissolution resistance of zinc particles in the coatings was increased with the Ecorr of the coatings.

结果表明，水性无机富锌涂料随着水基模数的增加，涂层腐蚀电位增高，涂层对腐蚀介质的屏蔽性能增强，涂层中锌粉颗粒的活性溶解阻力增大。

Insertable with flange plate,zinc die casting/steel, zinc-plated

锌合金压铸件/钢，镀锌，带轮缘盘，可以插入型材

S202 insertable with flange plate,zinc die casting/steel, zinc-plated

0.113kg w 锌合金压铸件/钢，镀锌，带轮缘盘，可以插入型材

A fungus CTB430-1 with resistance to copper and zinc was isolated from soil at a copper and Zinc Tailing of Linxiang in Yueyang city, Hunan province. The fungus was identified by analyzing the morphology and measuring the ITS sequence. The effects of pH, initial concentration, co-ions on the growth of CTB430-1 and bioaccumulation of Cu2+ and Zn2+ were studied. The protein and glutathione in the cells were determined by using the coomassie brilliant blue method and iodometric method, respectively.

摘 要：从湖南省岳阳市临湘铜锌尾砂坝土壤内分离、纯化得到1株抗铜和锌的菌株CTB430-1，分析该菌株形态和测定菌株ITS基因序列鉴定菌种，研究不同pH值、金属离子初始浓度和金属离子共存对菌体生长量和富集重金属的影响；分别采用考马斯亮兰法和碘量法测定菌体内可溶性蛋白和还原性谷胱甘肽含量。

The results show that jamesonite and pyrrhotite have good floatability in the pH range of 2-10 and marmatite has good floatability in the acid and it is difficult to separate these minerals. In the pH range of 6-8, the separation of jamesonite and pyrrhotite, marmatite is possible when using mercaptoacetic acid and mercaptoethanol as depressants. In case of the presence of Cu2+ ion, however, it is difficult to separate the three minerals. Infrared spectrum demonstrates that there are a number of function groups such as —SH,—COOH,—OH in the molecular structure of depressant.

结果表明：用丁黄药作捕收剂，脆硫锑铅矿和磁黄铁矿在pH 2~10范围内都有良好的可浮性，铁闪锌矿在酸性条件下可浮性好，三者分离困难；在pH 6~8之间，采用巯基乙酸和巯基乙醇作抑制剂，脆硫锑铅矿与磁黄铁矿和铁闪锌矿的分离是可能的；但铜离子存在时， 3种矿物之间的选择性分离是难以实现的。

The objections of this study are to determine the effects of the different levels of Zinc-Methionine supplemented on on lactational performance and reproductive performance in dairy cows,and find out the suitable does.

本试验旨在研究蛋氨酸锌对奶牛泌乳性能及繁殖性能的影响，并筛选出奶牛日粮中适宜的蛋氨酸锌添加剂量。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。