alumina

magnesia-alumina-silica

硅金

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%.

粉煤灰中氧化质量分数达15%~40%,是制备氧化和氢氧化资源。

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

经查阅资料，测定主要方法有铬天青S法和试剂法。

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.

利用氧化厂工业废渣生产改性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-凝胶法制备氧化无机膜工艺过程，确定了作为胶溶剂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过程中氯离子对工艺指标及生产设备腐蚀影响，分析了有氯离子存在时造成设备腐蚀失效主要原因。

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：以石膏和沸石对高水泥改性，配制出耐久性良、具有微膨胀性低碱度改性水泥。

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陶瓷产品专业公司，座落在太湖之滨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助催化剂铯后，其酸性中心浓度又有了明显下降。