XDF、DJX型高壓電選機(jī) High  roltage electrostatic separators

電選是利用礦物導(dǎo)電性的差別，在電暈電場(chǎng)中進(jìn)行分選的一種選礦方法。本機(jī)為雙鼓筒電選機(jī)，電極為復(fù)合電極，鼓筒、機(jī)架均與地線相連接，鼓筒表面與高壓電極右保持一定的可調(diào)距離，此距離稱為極距，當(dāng)高壓電源的負(fù)電通電至電極后，電極與鼓筒表面間產(chǎn)生電暈電場(chǎng)和靜電場(chǎng)，入選礦物由轉(zhuǎn)鼓帶至高壓電場(chǎng)后，由于電暈電極不斷地放出電子，因此無(wú)論導(dǎo)體與非導(dǎo)體礦物均同時(shí)獲得了負(fù)電荷，不同點(diǎn)是導(dǎo)休與非導(dǎo)體的電性質(zhì)不等，導(dǎo)體礦料能很快地將所獲電荷經(jīng)鼓筒的產(chǎn)生的離心力及重力作用，沿鼓筒切線方向拋落在導(dǎo)體接礦斗中；非導(dǎo)體礦粒則不同，不能立即將所獲電荷傳走而鼓筒面產(chǎn)生鏡面吸力，吸在鼓面并隨之轉(zhuǎn)動(dòng)至后方，用毛刷刷下而落到后方非導(dǎo)體接礦斗中；介呼導(dǎo)體與非導(dǎo)體之間的中礦周日落到中礦斗中，成為中礦，以此實(shí)現(xiàn)分選，它是當(dāng)前重要精選設(shè)備之一。

Electrostatic separation is a  kind of beneficiation method that makes use of the difference of minerals’  electrical conductivity for electrostatic separation in the corona field. This  machine is double-drum electrostatic separator. The electrode is combination  electrode. Drums and racks are all connected to the earth wires. The surface of  drum is kept at a certain adjustable distance from the high voltage electrode.  This distance is called polar distance. After the negative electricity of  high-voltage power supply is connected to the electrode, corona field and  electrostatic field are produced between the electrode and the surface of drum.  As the corona field releases electrons uninterruptedly after the selected  minerals are taken to the high-voltage electric field by the drum, both  conductor minerals and non-conductor minerals obtained negative charges. The  difference lies in that the electrical property of conductors and  non-conductors is not the same: Conductor minerals can very quickly throw the  gained electric charges in the ore receiving bucket along the direction of the  drum tangent through the action of centrifugal force and gravity produced by  the drum. However, non-conductor minerals are different. They can not  immediately divert the gained electric charges. The surface of the drum  produces surface suction. It is absorbed to the drum surface and then turns to  the rear. When they are brushed by the hairy brush, they fall into the  non-conductor ore receiving bucket in the rear. Middling ores whose  conductivity is between that of conductor and that of non-conductor fall into  the middling ore bucker and become middling ores so as to realize separation.  It is one of the important types of typical equipment at present.

適用于試驗(yàn)中白鎢錫礦的分選，鉭鈮礦、鋯英石，獨(dú)居石、金紅石的精選，及廢舊金屬與非金屬物料的回收。

This kind of equipment applies  to the sorting of tungsten-tin ores, the concentration of formanite, zirconite,  monazite and rutile, as well as the recycle of scrap metal and non-metal  materials.