The vast majority of China s manganese are lean ore, ore processing must be carried out. But because most manganese ore is fine-coarse-grained or micro – fine disseminated, and there are a considerable number of high phosphate rock, iron ore and total (with) useful metal, so the beneficiation process is very difficult to conduct. The commonly used manganese ore beneficiation methods are machinery election methods (including washing, screening, re-election, high intensity magnetic separation and flotation), as well as chemical beneficiation method. First, the first step must be washing and sieving Washing is the method that use the hydraulic flushing or additional mechanical scrubbing to separate the ore and muddy. The common used gravel equipments are wash griddle, cylindrical ore washing machine and trough washing machine. Washing operations are often associated with screening, such as the ore after going through the flush cleaning or washing machine (net mine), and then be sent to the vibration sieve shaker directamente. Screening is a stand – alone operation, the obtained different particle size and grade of product are supplied for different purposes. Then, depending on the nature of the manganese ore grade, select the different beneficiation methods: Re-election (gravity dressing) Re-election only used for sorting the simple structure, coarser disseminated ore, especially suitable for the higher density of oxide ore.
The common methods are heavy media beneficiation, dressing and shaking jigging beneficiation. The process of manganese oxidation in China is generally refers to the ore is crushed to 6 – 0 mm or 10 – mm, and then grouped Enviar shaker for the further selecting. High intensity magnetic separation (magnetic dressing) Manganese ore is the weakly magnetic minerals, which can be recovered in the strong magnetic field of the magnetic field intensity magnetic separator, the generally increased manganese grade is 4% – 10%. Duo to the operation is simple, easy control, adaptability, can be used for a variety of manganese ore sorting, so in recent years they have been dominant in the manganese ore. Every new types of coarse, medium and fine-coarse-grained magnetic machine has been developed successfully. Currently, the most common manganese is a medium-coarse-grained strong magnetic separator, coarse and fine intensity magnetic separator gradually been applied. the micro – fine strong magnetic separator is still at an experimental stage. Does Magnetic flotation (flotation dressing) According to industry tests, the grinding grinding process always adopted the rod mill (rod mill) milling (ball mill) stage, and the? 2100mm 3000mm type wet grinding machine. After years of production tests, the performance is good, which is very suitable for the application of Zunyi manganese beneficiation. Magnetic flotation process successfully tested and has been applied in the production of deep marks China s manganese election has gone a major step forward.
