LZ-2 type high-tension electrostatic and dielectric mineral separation instrument is a new type equipment of mineral separation. As compared with the simlar type of product in our country, it has following advantages: (1)It can organitcally join two functions of electrostatic separation and dielectric separation, thus can make one machine possess many uses. (2)The electrostatic separation exports steady high-tension and ex- tends the region of mineral separation.The separation roam is made of ceramic material, which attenuates electrostatic induction attracting to mineral partio- les and decreases consumption of the sample. (3)The frequency of dielectric separation can be adjusted continuously in a certain region, so that we can select the optimal separation condition at any time. The mode of separation has realized the automatic separation by machines and substitutes manual operation in the past. Then it greatly imp- roves on the operation condition. This kind of instrument has great power, so it can make two attraction electrodes work at the same time and enhance operation efficiency. Through initiai productive practise the function of the instrument is steady. The separation efficiency is very good. The instrument is a sort of adeal equipment for pure mineral separation.