查询词典 alumina

Almatis recently announced global price increases for tabular alumina, calcined alumina, calcium aluminate cement and spinel products.

最近，Almatis宣布公司全球范围内的片状氧化铝、煅烧氧化铝、铝酸钙水泥、尖晶石产品提价。

High alumina cement system ; Q phasealumina calcium-7 alumina 12 calcium system ; sintering ; compressive strength

高铝水泥； Q相铝酸一钙七铝酸十二钙系统；烧成；抗压强度

It is also revealed that the refractoriness of Portland cement and alumina cement are actually at the identical level, and refractoriness of castable with low cement content of Portland cement, substitution of alumina cement, will not cause worsening of refractoriness.

研究还发现硅酸盐水泥耐火度与矾土水泥耐火度实为同一水平，低水泥耐火浇注料中硅酸盐水泥替代矾土水泥不会造成浇注料耐火度的恶化。

Linear change after baking of the gunning mix which takes clay and bauxite as aggregates and high alumina cement as binder can be obviously reduced by adding 30% alumina fine powder and 5% kyanite.

在以焦宝石、矾上熟料为基本骨料，以高铝水泥等为复合结合剂的喷补料中加入3％的Al2O3超细粉或5％的蓝晶石粉都有利于降低喷补层的烧后线变化。

The physical performance of alumina cement -based composite fabricated by vibratory compaction by using alumina cement as gelling agent and graphite as conductive filler were studied in this paper.

选用石墨作导电填料，铝水泥作胶凝材料，两者复合制备铝水泥基导电复合材料，对这类导电复合材料进行了基础的开发性研究。

Experiment studied the possibility of substituting Portland cement for alumina cement to make low cement castable refactory. The results indicated that Portland cement may definitely substitute the alumina cement to make low cement castable with good performance, within the scope of low cement content of the modern low cement castable system.

试验研究了硅酸盐水泥替代矾土水泥制造低水泥耐火浇注料的可能性，结果表明在低水泥掺量的现代低水泥耐火浇注料体系中，硅酸盐水泥完全可以替代矾土水泥配制性能良好的低水泥耐火浇注料。

The mullite is M60 mullite containing Al2O3 not less than 60 wt%, the cordierite contains Al2O3 33-35 wt% and MgO 13-15 wt%, the micro silica powder contains SiO2 not less than 92 wt%, the micro active alumina powder contains Al2O3 more than 98 wt%, the high alumina cement contains Al2O3 not less than 46 wt%, CaO not more than 40 wt% and SiO2 not more than 10 wt%.

其中，所述的莫来石为M60莫来石，其化学成分为：Al 2 O 3 ≥60％；堇青石化学成分为：Al 2 O 3 33～35％，MgO 13～15％；硅微粉化学成分为：SiO 2 ≥92％；活性氧化铝微粉化学成分为：Al 2 O 3 ＞98％；高铝水泥化学成分为：Al 2 O 3 ≥46％，CaO≤40％，SiO 2 ≤10％。

Mainly used for precision casting industry ceramsite sand (the Chinese name of it did the "Pearl of Sand""High Aluminum Sand," oil fracturing support, etc.) and used for refractories, abrasives industry white corundum, brown corundum, fused spinel, fused mullite, zirconium mullite, alumina hollow spheres, alumina powder, refractory cement and other products.

主要有用于精密铸造行业的陶粒砂（中文名称又做&宝珠砂&&高铝砂&石油压裂支撑剂等）和用于耐火材料、磨料磨具行业的白刚玉、棕刚玉、电熔尖晶石、电熔莫来石、锆莫来石、氧化铝空心球、氧化铝微粉、耐火水泥等产品。

Taking the andalusite from South Africa and alumina fiber as raw materials, adding aluminum sulphate as binder, fabrication and properties of alumina fiber reinforced andalusite composite was studied through wet dispersion, mould pressing and sintering processes.

以红柱石和氧化铝纤维为原料，用硫酸铝作为结合剂，经过分散、混合、半干法成型、高温烧成工艺，对氧化铝纤维增强红柱石基复合材料的制备及性能进行了研究。

It was believed that either alumina reacted with impurities in the iron powder or the surface diffusion caved the alumina particles to stick to the iron powder surfaces. Another approach was to use the air classifier mill to break up the sintered iron cakes into powders. The morphology of such particles was classified into 4 types in this study: irregular, equalaxed, near spherical, and flaky. The morphological differences were affected by the extent of sintering. The higher the extent of sintering, the stronger the inter-particle bonding.

此外，本实验利用空气分级气流粉碎机将还原后的烧结体进行粉碎，实验结果显示粉碎后的粉末形貌可以分为四种，不规则形、等轴形、近球形和片形，形貌上的差异是由於还原时铁粉烧结程度的不同，烧结程度越高，粉末间键结强度越强，因此粉碎过程中会产生高程度的塑性变形，以至於粉末形貌越来越接近球形，最后因粉末表面大量加工硬化产生破裂，形成片状碎屑。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。