摘要
通过黑钨矿晶体构造的讨论,定量地解释了黑钨矿润湿性存在各向异性的原因,是由于单位晶面上断裂的(Mn,Fe)—O键数不同;计算表明,(001)、(010)和(100)三者的断裂键数分别为0.650、0.626和0.417。因此,黑钨矿在捕收剂油酸钠溶液中疏水性大小顺序为(001)>(010)>(100)。根据YSD静电模型计算,得出MnWO_4的理论零电点为2.75,FeWO_4的理论零电点为1.95,与试验结果基本一致。钨锰矿比钨铁矿具有更低的负电位,可浮性钨锰矿优于钨铁矿。
In present study, anisotropy of wolframite wetting property was considered to be for no other reason than the difference of the numbers of "(Mn, Fe)-O" bonds fractured per unit area on (001) , (010)and (100) crystal planes, based on a discussion of wolframite crystal structure. The calculation results show that the numbers of fractured bonds per unit area on(001), (010)and(100)planes are 0.650, 0.626 and 0.417 respectively. Consequently, in sodium oleate solution, the order. of hydrophobicity is(001)>(010)>...
出处
《有色金属》
CSCD
1990年第4期38-43,共6页
Nonferrous Metals
基金
自然科学基金
