氧化钴

The parameters for cobalt deposition from sulfate solution with chlorinated lime solution is investigated and applied to production.

从湿法炼锌过程所产生的二次含钴物料中提取钴，需经过浸出预中和，初步净化脱杂及析钴工序才能得到氢氧化钴中间产品。

By the optimal condition, the cobalt content in crude cobalt hydroxide deposited from impure cobalt sulfate solution with chlorinated lime solution is higher than 43%, and the contents of the impurities, such as zinc, manganese, copper, nickel, ferrous and arsenic, are relatively low, the cobalt content in mother solution is less than 0.06g/L, the direct recovery of the cobalt is higher than 98%.

针对某硫酸钴溶液，为获取较高钴品位及较低杂质含量的粗氢氧化钴中间产品，开展漂水析钴工艺控制条件的研究，将所确定的析钴工艺控制条件用于生产，得到了含杂质较低的粗氢氧化钴中间产品。1 试液特征二次含钴物料经浸出中和及初步净化后，得到如表1所示的CoSO4 溶液。

In this thesis, three major achievements were made in theoretical study: conditions and rules for preparing nano-powders by chemical precipitation are analyzed from the point of view of thermodynamics and kinetics, the principle, standards and experimental method for the aqueous dispersion of nano-scaled metal oxide powders were proposed and verified, mathematical model of nano-filming addition of dopants by chemical coprecipitation was established. In experimental research, nm-ZnO, nm-Bi〓O〓, nm-Co〓O〓 and nm-MnO powder with spherical shape, narrow particle size distribution and small particle size were prepared successfully, highly stable and dispersive aqueous suspensoid of nm-ZnO, nm-TiO〓, nm-Co〓O〓 and nm-MnO powder were prepared successfully and surface modification on these nano-powders was also achieved, 0-3 nanocomposite ZnO varistors with nm-ZnO, nm-TiO〓and nm-MnO respectively were prepared successfully by conventional mechanical attrition, and exhibited much better electrical properties than those of conventional varistors.

综上所述，本文在理论研究方面取得了三项成果：（1）从热力学和动力学角度推导并分析了液相化学沉淀法制备纳米粉体的反应条件和规律，（2）提出了纳米氧化物的水分散体系的设计原理、规范和通用实验步骤，（3）提出了共沉淀的数学模型和计算方法；在实验方面所取得的成果有：（1）成功制备了粒度小、分布窄、形貌对称的纳米氧化锌、纳米氧化铋、纳米氧化钴和纳米氧化亚锰，（2）成功地制备了纳米氧化锌、纳米二氧化钛、纳米氧化钴和纳米氧化锰的高稳定分散悬浮液并实现了干粉体的表面改性，（3）成功地进行了纳米氧化锌、纳米二氧化钛和纳米氧化锰对压敏电阻的0—3复合掺杂实验，试样性能远优于常规压敏电阻，为实现压敏电阻的高能高压化提供了新的方法和思路。

A novel type of composite electrode based on multiwalled carbon nanotubes coated with sheet-like cobalt hydroxide particles was used in supercapacitors. Cobalt hydroxide cathodically deposited from Co(NO3)2 solution with carbon nanotubes as matrix exhibited large pseudo-capacitance of 322 F/g in 1 mol/L KOH.

采用电化学阴极沉积还原Co(NO3)2的方法制备了具有准电容特性的氧化钴电极材料，其比容量达到280 F／g，采用CNTs作为电极基体，在其表面均匀的沉积了纳米钴化镍颗粒并由此制备了氧化钴碳纳米管复合电极材料。

The complexation method was used to deposit cobalt from the lixiviated solution, and complexation shows advantages in the phase and oxidation-state control of cobalt hydroxide,β-Co2 was exclusively synthesized in the complexation deposition method.

对浸出后所获钴液可进行络合法碱液沉钴，实验研究表明，过程络合法具有能有效控制钴氧化价态和氢氧化钴形态的优点，能稳定地合成粉红色的β-Co_2。

Company's main products for cobalt oxide, nickel oxide, cobalt sulfate crystals, crystal, such as cobalt chloride.

公司主要产品为氧化钴、氧化镍、硫酸钴晶体、氯化钴晶体等。

The company mainly produces all kinds of cobalt salts products, has formed a cobalt chloride (CoCl 2 6H 2 O), cobalt oxalate (CoC 2 O 4 2H 2 O), cobalt oxide (CoO Co 2 O 3), Cobalt sulphate (CoSO 4 7H 2 O) and cobalt carbonate (CoCO 3) annual 1,500 tons (up to 2005) of production capacity.

公司主要生产各种钴盐类产品，已形成具备氯化钴( CoCl 2 · 6H 2 O )、草酸钴( CoC 2 O 4 · 2H 2 O )、氧化钴( CoO · Co 2 O 3 )、硫酸钴( CoSO 4 · 7H 2 O )和碳酸钴( CoCO 3 )年产量 1500 吨（至 2005 年）的生产能力。

The experiment aimed at studying the effects of different cobalt sources on vitamin B12 status and their biological functions in sheep. Twenty four healthy wethers with an average weight of (23.6±0.8)kg were divided randomly into 4 groups and fed with different experimental diets in which the cobalt were supplied as cobalt sulphate, cobalt chloride, cobalt acetate and cobalt oxide.

为研究不同钴源对肉羊VB12营养状况的影响及其生物学效应，选24只健康、体重相近(23.6±0.8kg的杂交一代羯羊，饲喂加入硫酸钴、氯化钴、乙酸钴和氧化钴的试验日粮，试验期8周。

All animals were individually fed with a constant concentration and hay for 8 weeks. Results showed that VB12 production from cobalt in lambs was similar when using cobalt sulphate and cobalt chloride, and was significantly higher (P.05) in cobalt sulphate than in cobalt acetate. However, VB12 production significantly decreased in cobalt oxide treatment compared with other forms of cobalt sources. The relative bioavailability of cobalt sulphate, cobalt chloride, cobalt acetate and cobalt oxide was 100%, 95.66%, 89.50% and 22.56% respectively.

结果表明：1硫酸钴、氯化钴、乙酸钴、氧化钴的相对生物学有效率分别为100%、95.66%、89.50%和22.56%(P.01)；2硫酸钴、氯化钴、乙酸钴和氧化钴组血浆VB12的含量分别为1666.9、1594.5、1493.3和376.1pmol/L，硫酸钴、氯化钴组相近，乙酸钴组稍低，而氧化钴组明显下降，血浆甲基丙二酸含量为2.94、3.01、3.49和3.99μmol/L；同型半胱胺含量为8.91、9.23、9.97和10.78μmol/L，硫酸钴与氯化钴组相近，乙酸钴组稍有增加，而氧化钴组明显升高，3个指标反映了一致的钴营养状况。

First firing of raw materials are usually basic glaze frit, in the process of production need to add metal oxides, metal ions is also a special color of the enamel glaze color, or as a gel, or suspension-like particles of the dispersion or absorption of light and color, for example, cobalt oxide blue or purple, blue green copper oxide, cobalt oxide copper oxide mixture is significant blue, red cuprous oxide, nickel oxide in the potassium content of the glaze was red, in the sodium yellow glaze of green, if used alone was brown iron oxide, cobalt oxide and manganese dioxide are combined black or dark brown.

通常是先将原料烧成基本釉的熔块，在制作的过程中再加入需要的金属氧化物，也就是以金属离子特具的颜色而使珐琅釉呈色，或成为胶状，或悬浮状的粒子对光线的色散或吸收而呈色，例如氧化钴呈蓝或紫色、氧化铜呈蓝绿色、氧化铜混和氧化钴则显青色、氧化亚铜呈红色、氧化镍在含钾之釉中呈红色、在含钠之釉中呈黄绿色，又如氧化铁单独使用呈褐色，与氧化钴及二氧化锰合用则呈黑色或黑褐色。

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。