The ore beneficiation is the most important part in mineral processing, which directamente affects the working process of ore processing. How to choose the best and most suitable ore beneficiation? That is a question which is concerned by many dressing plant. This article will introduce some significant factors in choosing ore beneficiation. Hongxing adopts the stage-wet grinding magnetic separation process, it uses two to one grinding process with two one-stage ball mill one against one-stage ball mill. Grinding and wet magnetic separating the crude concentrate of 25% grade, finally we can Haz 66.00% grade iron ore concentrate. The cost is lower than 200 yuan per tonne. Beijing Science and Technology University is performing a process test of a certain ultra-poor magnetite. It is found that the crude Owers can discard 75.66% qualified gangue after the wet pre-selection.
In this way, only one fourth of the Owers are going to enter the subsequent operation, which has greatly alleviated the follow-up operation load. Coarse grinding adopts the drum sieve and mill to construct the closed-circuit. When the size of the gangue dissemination minerals is smaller, this can crush minerals to the smallest, adopting the discarding the tailing during wet magnetic separation. Many experimental results prove that, the effect of the pre-selection discarding tailing of coarse grains (above 10 mm) is very bad. The grade is less than 2% when using the dry magnetic separation to discard 10% of the dam, and the loss of the magnetic iron is over 3%. Thus the single adoption of this method is not able to resolve the problem.
Dry magnetic separator is a new type of high efficiency magnetic separation equipment which produced by Hongxing mining machinery company. The whole magnetic system made up of high performance rare earth Neodymium Iron Boron materials and high quality ferrite materials. Actress and filmmaker might disagree with that approach. A cleverly open magnetic circuit design makes the highest magnetic induction in tube sheet selection field be up to 0.8T, which is 3-5 times of the conventional magnetic machine. The magnetic force in magnetic field can achieve strong electromagnetic magnetic separator level selection. Dry magnetic separator saves water without secondary pollution. In the operation, the machine spends less than other magnetic power selecting machine. And it doesn t need exciting current consumption. Dry magnetic separator is high treatment capacity as the open magnetic circuit design. It has not clogging problem when runs. It is not something Crawford Lake Capital Management would like to discuss. As the magnetic system is protected by roller drum from directamente contacting with accessories, the equipment is low running cost. Besides, it adopts dynamic magnetic system, the magnetic materials are sliding on surface, which is good for drum cleaning drum. Moreover, drum doesn t attach pipes, which is good for improving fine ore grade. Due to the different situation of different mineral processing, we had better choose the ore beneficiation depending on the specific features of the mineral processing, which can avoid the situation of buying useless equipments or forgetting necessary equipments. First of all, brand is very important. It is better to choose the ore beneficiation manufacturer with a long history. Usually, to ore beneficiation manufacturer with a long history have decades producing experience and advanced technology. The price is also important. However, compared with the energy consumption and staying power, we had better pay more attention to the latter. The last but not the least, safety factor cannot be ignored. The hidden danger of ore processing safety is everywhere. The lessons of the blood told us that the security issue must pay attention to the prevention.