Strong Magnetic Field Permanent Magnetism Ore Separator Optimization Design And Experiment Reasearch

Since the 21st century, our country economy has continued, the fast development stably, the country infrastructural facilities step speeds up. The steel and iron demand increases day by day, moreover the quality request enhances unceasingly. The principle which exploit the resources various countries are always following is first rich and then the poor, starts with the easy and then does the difficult, Therefore complex difficult to elect the iron ore resources' use appears increasingly important. In the magnetic separation craft quite mature foundation, the magnetic separation equipment's influence on the beneficiation index is really obvious, the choose of the magnetic separation equipment to the iron ore resources development which complex difficult to elect has the important practice significance in the technology and the economy.This topic mainly studied the optimization design of the strong magnetic field permanent magnetism magnetic ore separator magnetism department, The shape hematite carried on the classification experiment with the high phosphorus oolitic hematite . According to performance of existing permanent-magnet material and the performance requirement of strong magnetic field permanent magnetic separator department. Adopted the high magnetic field, stable property NTP-336 neodymium iron boron material as the magnetic material. In the magnetic separation equipment, the design of magnetism is a key, carried on the detailed inferential reasoning to the strong magnetic field permanent magnetism magnetic ore separator magnetism department's magnetic field distribution, reasoned the strong magnetic field permanent magnetism magnetic ore separator magnetic field distribution analytic function by using Xu Wazi - the gram Liesi and the elliptic function third orderinfers. The magnetic field strength size is H =|(H|.)|=(ψ₀dnα)/(gkcnα)((A²+B²)^1/2/C)^1/2 , Magneticfield strength's direction isθ= arctan(B/A)^1/4 . Under the optimization designed magnetism structure size, its magnetic field strength is highest may achieve 1.308T. Developed the magnetic field strength to be high, the stable property, consumes energy few, the noise pollution small strong magnetic field permanent magnetism magnetic ore separator prototype, then carried the experimental on the Hubei west Ningxiang type oolitic high phosphorus hematite. In the experiment, mainly studied the two material effect factors' effect on the strong magnetic field permanent magnetic separator which is rubbing degree of fineness, the cylinder rotational speed to chooses a minute.The Ningxiang of west Hubei oolitic hematite has the characteristic of mineral granularity to be extremely thin, the undressed ore nature to be complex, the undressed ore grade is low, the high phosphoric. In view of its characteristic, adopted the process integration flow, the magnetic separation technical process is mainly enhances the first ore concentrate grade during guarantee returns-ratio, provided the high quality ore sample for the following technical process. On the foundation of parameter optimization design, adopted the magnetism angle of deflection for 128°, the separation work break is 1.92cm, the process load is 15kg/h. When rubbing degree of fineness is 82.53%, the cylinder rotational speed is 40r/min, its magnetic separation effect is the best.By using one time rough sizing and one time sweeping circle technical process, the first ore concentrate grade may achieve 50.56%, the returns-ratio 88.12% good targets, therefore, this magnetic ore separator prototype can commendably achieve the design requirements. This craft is easy and feasible, lay the solid foundation for the following technical process to raised the iron and fall the phosphorus.