Spiral classifier transformation

Spiral classifier transformation
Classification is the process of preparing an important mineral processing, grading and results of operations, will directly affect the index concentrator subsequent jobs. Grading equipment beneficiation process used for many reasons, spiral classifier is one of them. Compact spiral classifier, easy to use, with the mill closed composition gravity, is still widely used in selected plants. But the spiral classifier large area, low-grade efficiency, but also limits its application. In recent years, some grinding and classification operations, there have been replaced with cyclone spiral classifier and mill closed trend. Therefore, how to improve the efficiency of spiral classifier, to play its inherent advantages to become an important research topic.
Spiral Classifier experts conducted a systematic analysis of the theoretical foundation, established under the settlement conditions of turbulence and interference spiral classifier unsteady flow fractionation kinetic differential equations. According to the characteristics of the traditional spiral classifier, the improved methods and measures, design and manufacture of a semi-industrial type 300mm × 4300mm spiral classifier. The improved spiral classifier, the basic principle has not changed, just the way of discharge and stirring traditional way spiral classifier were adjusted to shorten the path of movement of qualified mineral particles in a hierarchical machine, a qualified fine grade timely discharge transversely through the overflow hole and overflow control running rough. By increasing the spiral mixing blade in the staging area, reducing fine grit in the folder to avoid pulp reflux, reduce anti-mineral enriched, so as to improve the spiral Classifier efficiency.
Experts around the spiral classifier improvements carried out experimental system parameters, including the concentration of the test ore, grading machine slope test, the position of the test to the mining flow test, the weir height and overflow hole. Experimental data show that the first improvements, spiral classifier transfer efficiency is only 30% -50%, after improvement, spiral classifier transfer efficiency of 50% -70%. Comparison, the improved spiral classifier, its classification efficiency than before improved by an average of 10-17 percent, a testament to our research work to achieve the desired purpose.
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