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

经查阅资料，测定的主要方法有铬天青S法和试剂法。

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

苯甲醛和丙酮为原料,氟化钾氧化作催化剂合成了苄叉丙酮。

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.

利用氧化业废渣生产的改性酸钙水剂兼有混凝和脱盐两种。

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.

石膏和沸石对高水泥改性，可配制出耐久性良好、具有微膨胀性的低碱度改性水泥。

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。

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的专业公司，座落在太湖之滨的陶都宜兴市阳羡茶场。