alumina

magnesia-alumina-silica

硅镁铝合金

Fly ash is a very good resource for preparing alumina and alugel,because the mass fraction of alumina in it can be up to 15%~40%.

粉煤灰中氧化铝质量分数达15%~40%,是制备氧化铝和氢氧化铝的很好资源。

By access to information,determination methods of alumina are mainly including chrome azurol S method and aluminon method.

经查阅资料，测定铝的主要方法有铬天青S法和铝试剂法。

Modified calcium aluminate as a purifying agent, with two functions both of coagulability and desaltification, can be produced from industrial waste slag from alumina plant.

利用氧化铝厂工业生产的改性铝酸钙净水剂兼有混凝和脱盐两种功能。

include capacitance mullite, capacitance zircon mullite, capacitance magnesia-alumina spinel, capacitance zircon corundum,diamantane, and corundum-mullite products.

体系。产品有电熔莫来石、电熔锆莫来石、电熔镁铝尖晶石、电熔锆刚玉、白刚玉、刚玉-莫来石制品等。

The art preparation of alumina membrane with sol-gel has been studied, in which acids have been used as peptizers.Concentration and peptization temperature of acids have been determined.

研究了溶胶-凝胶法制备氧化铝无机膜的工艺过程，确定了作为胶溶剂的酸及其用量以及胶溶温度；

To sum up the effect of chlorion corrosion on the process equipments and index in Bayer process alumina production,and analyse the main reasons of equipments unefficient caused by chlorion corrosion.

综述拜耳法生产氧化铝过程中氯离子对工艺指标及生产设备腐蚀的影响，分析了有氯离子存在时造成设备腐蚀失效的主要原因。

R esults show that the modified cement with good durability, small expansion and low alkality can be made by use of gypsum and zeolite modifying alumina cement.

结果表明：以石膏和沸石对铝水泥改性，配制出耐久性良好、具有微膨胀性的低碱度改性水泥。

Yixing tuofeng ceramic Co., Ltd. producing ceramic products of alumina specialized company, all the male genital of Yixing admires the tea plantation to located in pottery in the bank of Tai Hu.

宜兴市拓峰陶瓷有限公司是生产氧化铝陶瓷产品的专业公司，座落在太湖之滨的陶都宜兴市阳羡茶场。

The results are showed as follows.Lewis(Louis) acid sites exist on the surface of α-Alumina support and silver catalyst.Pyridine, the basic absorbate, can be adsorbed on its Lewis (Louis)acid sites.

研究表明： 在载体α-氧化铝和银催化剂表面都存在L酸中心，碱性吸附质吡啶能吸附于其L酸位， 载体α-氧化铝负载银之后，其酸性中心浓度有所降低，在银催化剂内加入一定量的助催化剂铯后，其酸性中心浓度又有了明显下降。