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This configuration can make full use of the height difference between different equipment to realize the slurry self-flow.
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However, due to the height difference between ball mill and spiral classifier, a lot of mineral processing plants can not directly install linear vibrating screen, and result that this configuration form is not easy to achieve and has few practical applications.Ĥ.Configuration of Linear Vibrating Screen, Knelson Concentrator and Hydrocyclone Gravity tailing is pumped to spiral classifier for classification. This configuration can realize the recovery of coarse gold from the ore by Knelson Concentrator directly, and maximize the recovery rate of gravity separation. (This configuration form is used in JinQu Gold Mine in HeNan Province)ģ.Configuration of Linear Vibrating Sieve, Knelson Concentrator and Spiral Classifier The disadvantage is that the screening effect of minerals is unstable due to the frequent blockage of the screen hole, the amount of undersize minerals is unstable, the screening efficiency is low, and the recovery index of Knelson Concentrator is not as good as expected. The advantage of this kind of configuration form is to make full use of the height difference between the ball mill and the classifier, and directly feed the large-grain ore into the classifier, which reduces the wear of the pump caused by the large-grain ore. Knelson Concentrator uses a large amount of water, resulting in a large water content of tailing after separation, so it must be concentrated before returning to the ball mill for regrinding.įigure 3 Process Configuration of Fixed Sieve, Knelson Concentrator and Spiral Classifier However, hydrocyclones are often used for classification abroad, therefore, Knelson Concentrator is usually used to separate coarse gold from underflow by hydrocyclones. Because the spiral classifier is often used in the classification of gold mineral processing plants in China, the former configuration is more used in China. The Knelson Concentrator can be configured before classification or after classification. Since then, the Knelson Concentrator has been rapidly promoted and applied in other mines in China, and configuration forms of Knelson Concentrators in gravity separation process has also been developed. Later, HeNan JinQu Gold Mine and Shanxi YiXingZhai Gold Mine also successively applied it in coarse gold recovery. ShanDong YinGeZhuang Gold Mine was the first to import the Knelson Concentrator into China for recovery the coarse gold. They have brought revolutionary development to China's mineral processing production, and the scale and technical indicators of mineral processing have also been greatly improved. In recent years, due to the rapid rise of gold price, the economic benefits of gold mining and production companies have been significantly improved, and a large number of advanced world-renowned mineral processing equipment have been applied in China, due to their advantages of high equipment efficiency, low failure rate and easy operation, as well as simple process configuration and so on, they are generally recognized by mine and industry experts, these equipment include: crushing and screening equipment produced by Metro and Sandvik, Knelson Concentrator, etc.
Discussion on the Configuration Forms of Knelson Concentrators in Gravity Separation Process
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