查询词典 alumina

Benzaldehyde and acetone used as materials,the benzylidene acetone is synthesized in the presence of potassium fluoride on alumina.

以苄叉丙酮为主光亮剂、OP-10为载体光亮剂，并加入适量的辅助光亮剂，复配出Zn-Mn合金电镀添加剂ZM。

Results show that C_(2)AS in high-alumina cement with CACA_(2)C_(2)AS system can be transformed into the Q phase when adding MgO and abundant CaO after calcined at high temperature.

结果表明：高铝水泥系统中的C2AS，在加入MgO和系统补钙的条件下，经过高温煅烧能够转化为Q相，高铝水泥系统CA 二铝酸一钙(CA2) C2AS变化为Q相CA C12A7.Q相CA C12A7的烧成温度为1 260~1 300 ℃，保温时间为30~60 min。

It is indicated that the hexagonal calcium hydroferrite is a kind of high scattered calciferous compound. The interplanar spacing of hexagonal calcium hydroferrite is wide. The desilication activity of hexagonal calcium hydroferrite is higher. And the loss of alumina can be reduced.

结合X射线衍射分析讨论水合铁酸钙的脱硅机理，提出水合铁酸钙是一种高度分散的含钙化合物，其晶面间距较大，脱硅活性较高，并可大幅度降低铝损。

In the paper,the performances of new type of building material, MKP -based high alumina castable and the factors controlling its properties were investigated.

研究了以氧化镁和磷酸二氢钾反应所得的镁质磷酸盐水泥胶凝材料为结合剂的高铝质浇注料的性能及影响该浇注料性能的诸因素。

Chapter 3: Synthesis of 2-aroyl-l,3,5-triaryl-4-carbethoxy-4-cyanocyclohexanols from chalcones with ethyl cyanoacetate is carried out in excellent yields with KF/basic alumina as catalyst under ultrasound irradiation.

第三章：研究了超声辐射下，以碱性氧化铝固载氟化钾为催化剂，利用查耳酮和氰乙酸乙酯合成2-芳酰基-1，3，5-三芳基-4-乙酯基-4-氰基环己醇。

A new coagulant of ferric and aluminum alumina iron was used to decolorize the effluent of eucalyptus CTMP.

摘 要：利用自制的新型铁铝盐复合剂对桉木CTMP废水进行脱色实验。

We prepared the ordered porous alumina membrane by a two-step anodization method in oxalic or sulfuric acids, which is a self-ordered hexagonal array of cells with an adjustable pore diameter of 20-150nm and a different pore structures (i.e. Y-branched, dendriform, toothed and torous ones). Furthermore, the template-electrodeposition, vapor-catalytic growth, and controlled chemical etching were developed for well-aligned carbon nanotubes and oxide nanopillars with adjustable diameter, Al2O3-AlN one-dimensional heterojunction, Y-junction and dendriform metal nanowires, as well as Y-junction, and torous carbon nanotubes. The resultant one-dimensional junctions were characterized by XRD, SEM, TEM,HRTEM, and STM, and the field emission of the well-aligned carbon nanotubes and the luminescence of ZnO nanopillar array have also been mearsured.

完善和发展了阳极腐蚀法制备多孔氧化铝膜的方法，制备出了孔径在20-150nm之间可调和具有不同孔结构（如Y形、树枝状、锯齿状）的系列多孔氧化铝模板，在此基础上，利用电化学沉积、气相催化生长和化学控制腐蚀等方法，成功地生长出具有可调直径的碳纳米管和氧化物纳米柱有序阵列、Al2O3-AlN异质结纳米线、Y形和树枝状的金属纳米线以及Y形、藕节形和锯齿形的碳纳米管等多种一维结纳米材料及其阵列体系，探索了基于模板孔壁内沿生长一维结纳米材料的机制，较系统的研究了碳纳米管阵列的场发射性能和氧化锌纳米柱的发光性能，为低维纳米材料器件化提供了实验基础。

For more upgrade aluminium oxide yield, optimize indices, energy conservation and save cost, it is necessity to desilicify steps reconstruction.In order to overcome the shortcoming of the desilication used in Shangdong Alumina Corpotation,three technology such as indirect heating, continious desilication,deep desilication by separation of the sodium-silicon residue.

本文通过对理论界关于烧结法生产氧化铝脱硅原理的研究，结合国内主要氧化铝生产厂家脱硅实践方面的经验，针对山东铝业公司烧结法氧化铝生产脱硅工序的现状，运用间接加热连续脱硅、钠硅渣分离深度脱硅和HCAC法高效脱硅三项科研成果，对原有的三次脱硅工艺改为二次脱硅工艺。

The method can reduce greatly the job amount of fine milling, the ore milling cost and power consumption and raise alumina recovery rate, and is economically beneficial compared with available foam floating desiliconization technology.

本发明的方法，大大降低了细磨作业量，降低了磨矿费用和能耗，有效地提高了氧化铝回收率，与已有的泡沫浮选脱硅技术相比，经济效益显著。

Alumina Bayer production desiliconization workshop, easy to coke possession of the road, easy to use separate Pressure Seal Globe Valves valve type, valve seat can be place, and carbide seal pair of DC-style cut-off valve or DC-type throttle valve.

氧化铝拜耳法生产中的脱硅车间、易结焦的管路上，易选用阀体分开式、阀座可去处的、硬质合金密封副的直流式截止阀或直流式节流阀。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。