氧化镁

The results show that: the fillers of SiO_2 based investment consist of SiO_2,Al_2O_3 and MgO,and the binder is NH_4H_2PO_4;for SiO_2 based investment,the bulk density and the compression strength decrease,the apparent porosity and the thermal expansion increase,when the specimens are heated to 900 ℃;the fil.

结果表明：氧化硅系包埋料的骨料是氧化硅、氧化铝、氧化镁，结合剂为磷酸二氢铵，其900℃煅烧后显气孔率增加，体积密度下降，耐压强度降低，热膨胀增大；氧化铝系包埋料的骨料是氧化铝和氧化镁，结合剂为磷酸二氢铵，其900℃烧后显气孔率增加，体积密度下降，热膨胀变化不大；氧化镁系包埋料的骨料是氧化镁和氧化铝，结合剂是铝酸钙水泥，其900℃烧后耐压强度明显降低，热膨胀明显增大。

The industry magnesia mainly uses in making the ceramics, the enamel, the fire-proof material and so on; In the polishing compound, the adhesive, in the paint manufacture takes the stopping; In the artificial fiber, the rubber (chloroprene rubber, fluorine rubber) make the promoter and the catalyst; Makes the antacid on the medicine in the laxative, uses in treating the hyperacidity, the stomach and duodenum ulcer; May take the hard sugar purification is the decolorant in the food processing, the ice cream pH value conditioner and so on; In the construction profession, the magnesia may the manufacturing contain the magnesium special cement and the heat preservation board and so on; The biggest use is serves as the fertilizer and domestic animal's feed in the agriculture, causes the plant and in the animal metabolism process principal element, when serves as cow's feed, may prevent because to lack nervous system function being out of balance which the magnesium causes, namely the so-called forage grass convulsion gets sick; Uses in the chemical industry making the metal magnesium and the magnesium chemical, like magnesium sulfate, magnesium chloride as well as other chemicals; Moreover also uses in the water treatment, the detergent which the flue was mad uses in the glass, the dye, the electric cable, the silcon steel industry, the uranium processing, the electronics industry, the insulation material industry, as well as uses in professions and so on petroleum chemical additive, casting, phenolic plastic.

工业氧化镁主要用于制造陶瓷、搪瓷、耐火材料等；在抛光剂、黏合剂、油漆的制造中作为填充料；在人造纤维、橡胶中作促进剂和催化剂；在医药上作抗酸剂于轻泻剂，用于治疗胃酸过多、胃和十二指肠溃疡病；在食品加工上可作为砂糖精制是的脱色剂，冰淇淋的pH值调节剂等；在建筑行业中，氧化镁可生产制造含镁特种水泥和保温板等；在农业上最大用途是用作肥料和牲畜的饲料，使植物和动物代谢过程中的主要元素，用作奶牛的饲料时，可防止因缺镁而引起的神经系统机能失调，即所谓牧草性痉挛病；在化学工业中用于制造金属镁和镁化学品，如硫酸镁、氯化镁以及其他化学品；另外也用于水处理，烟道气的洗涤剂用于玻璃、染料、电缆、硅钢工业、铀加工、电子工业、绝缘材料工业，以及用于石油添加剂、铸造、酚醛塑料等行业。

Sales of MgO on the market at present is to light magnesium oxide、light burned magnesia and Heavy magnesium oxide.

目前市场上销售的氧化镁有轻质氧化镁、轻烧氧化镁、重质氧化镁。

In this paper,by considering the characteristics of magnesium resources in salt lakes in China,the research progress in the preparation and utilization of magnesium hydroxide,magnesium oxide,magnesium metal and alloys,magnesium oxychloride cements,and ...

本文针对我国盐湖镁资源的特点，综述了和盐湖镁资源开发利用相关的氢氧化镁、氧化镁、金属镁、镁合金、氯氧镁水泥和镁质晶须的开发及研究进展，并对我国盐湖镁资源的开发利用提出了一些建议。

At the same time we produce high purity magnesium oxide powder, activate magnesium oxide powder, high purity fused magneisum oxide powder, Strontium Titanate powder, and supply Yttrium Oxide powder, magnesium oxide hydroxide powder.

同时又生产国内领先的高纯度氧化镁粉、高纯度活性氧化镁粉、高纯度电熔陶瓷氧化镁粉、钛酸锶粉等粉体材料，并还能提供高纯度二氧化钛粉和氧化钇粉以及高纯度氢氧化镁等原料。

In this paper the author overviews mass magnesia concrete dam thchnical origin, the present status here and abroad, and available primal problems; descripts theexpansive character of magnesia concrete, fundamental force performances and long-term lasting quality, derivates all the equations of temperature field and temperature stress field, analysises the existing canonic calculating autogenous volume deformation model of the micro-expansive concrete, at last select the expansion model of dynamics for calculating.

本文综述了大体积混凝土氧化镁筑坝技术的由来、国内外研究现状、优势及存在的主要问题；叙述了掺氧化镁微膨胀混凝土的膨胀特点、基本力学性能及长期耐久性能；推导了计算温度场及温度应力场的全部公式。对现有计算氧化镁混凝土自生体积变形的几个典型模型进行了深入的研究和分析，阐述了它们各自的优缺点，最终选定动力学模型作为计算氧化镁混凝土自生体积变形的数学模型。

The melting point of the pure periclase magnesia is 2,800℃, some impurities may reduce the melting point of the magnesia , borides influence is extremely remarkable.

纯净的方镁石型氧化镁的熔点为2800℃，一些杂质可使氧化镁的熔点降低，其中硼化物的影响极为显著，即使是少量的硼化物(0.01%-0.02%)的存在就将导致氧化镁的抗蠕变性能明显降低，而B2O3在高温时的气化能够造成氧化镁材料的气孔率增大，严重影响其高温强度，故镁砂降硼是非常重要的。

By the combination of experimental results with theory of crystal growth, some growth models and growth mechanisms were proposed. Research results confirmed that pillar-shaped TaC whisker with spherical droplet at the end grew via a vapor-liquid-solid mechanism, pillar-shaped whisker with pyramid-like end was formed via a vapor-solid mechanism, awl-shaped TaC whisker with zigzag end formed via a liquid-solid mechanism, awl-shaped TaC whisker with growth step at the end has a growth mechanism of screw dislocation mechanism. The growth mechanism of dumbbell-shaped MgO nanowhisker and NaCl particle-decorated MgO nanowhisker is VS; C and MgO powder-yielded MgO nanowhisker was formed via a VLS mechanism, Mg powder-yielded MgO microwhisker and MgO microsized or nanosized crystal sheet grew via a VS mechanism. In the Si and SiO〓 nanostructures, Si nanowires formed in higher-temperature zone grew via oxide-assistant mechanism, while Si nanowires or nanorods formed in lower-temperature zone have a growth mechanism of VLS, and the growth mechanism of SiO〓 nanowires is VS.

研究确定呈平直柱状且头部带有球形颗粒的TaC晶须是通过气-液-固机制生长；头部呈之字型的锥状TaC晶须则通过液-固机制生长；晶须头部为四棱锥状的粗长TaC晶须的生长机制是VS机制；顶端呈锥状且有生长台阶的TaC晶须通过螺位错机制生长；哑铃状氧化镁晶须和氯化钠颗粒修饰的氧化镁纳米晶须的生长机制是气-固机制：当采用C+MgO粉提Mg源时形成的氧化镁纳米晶须的生长机制是VLS，而采用直接热蒸发Mg粉时得到的氧化镁微米晶须的生长机制为VS，纳米和微米晶片的生长机制均为VS机制；在高温区，硅纳米线的生长机制是助氧化机制，在低温区硅纳米线和纳米棒的生长机制是VLS机制，而氧化硅纳米线的生长中VS机制占主导地位。

Anhydrous magnesium chloride is the raw material of electrolyzed metal magnesium and an important intermediate of some catalyzers or medicines.

氧化镁氯化转化是以菱镁矿、水镁石、氢氧化镁或氯化镁脱水产生的氧化镁为原料，分为气体介质中氧化镁的氯化和熔融盐介质中氧化镁的氯化。

The main products are: the indirect method zinc oxide Zno99.7, Zno99.5, special rubber zinc oxide, light magnesium oxide, activated magnesium oxide, magnesium oxide wire and cable, adhesives dedicated magnesia, light magnesium carbonate, basic zinc carbonate, rubber accelerator TMTD, rubber Antioxidant: RD, DFC-34, SP-C, 4010,4010 NA of the Company to " With faith in order to survive, rely on technology and development, quality-oriented "approach, the vast numbers of users at home and abroad to win the trust and support, established a good cooperative relationship.

主要产品有：间接法氧化锌Zno99.7、Zno99.5、橡胶专用氧化锌、轻质氧化镁、活性氧化镁、电线电缆专用氧化镁、胶粘剂专用氧化镁、轻质碳酸镁、碱式碳酸锌、橡胶促进剂TMTD、橡胶防老剂：RD、DFC-34、SP-C、4010、4010NA 本公司以&凭诚信求生存，靠技术求发展，质量为本&的方针，赢得国内外广大用户的信赖与支持，建立了良好的合作关系。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。