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<table border="0" cellpadding="3" cellspacing="1" width="100%" class="forumline"> <tr> <th class="thCornerL" width="22%">Autor</th> <th class="thCornerR">Wiadomość</th> </tr> <tr> <td width="22%" align="left" valign="top" class="row1"><span class="name"><a name=""></a><b>defgf10aj</b></span></td> <td class="row1" valign="top"><table width="100%" border="0" cellspacing="0" cellpadding="0"> <tr> <td width="100%"><img src="http://picsrv.fora.pl/Elveron/images/icon_minipost.gif" width="12" height="9" alt="Post" title="Post" border="0" /><span class="postdetails">Wysłany: Czw 17:36, 04 Lis 2010<span class="gen"> </span> Temat postu: Ling Yuquan concentrator grinding system-related</span></td> </tr> <tr> <td colspan="2"><hr /></td> </tr> <tr> <td colspan="2"><span class="postbody">Ling Yuquan concentrator grinding system of the problem <br /> <br /> <br />Given the quality of the final product. 3 line screen sieve size can be seen from Figure 2, linear sieve sieve size not only for the ball two plays a key role in load distribution, but also for sorting and slurry delivery system has a significant effect. Screen size is too large, not only to increase the pump Wei, anti-magnetic separator pipe wear, could easily lead to loss of coarse-grained with the living body, but also increases the load ball Sec. Sieve size is too small, an easy-to-plug efficiency of screening, two stage grinding is not conducive to full elections, the advantages of coarse-grained relaxation tail. For straight-line screen for the double screen, check the maintenance of the lower screen is not nephews, wear serious move can not be put to death when the repair, mesh size sometimes up to 6 ~ 8mm, metallurgical and mining design and construction of the i997 screen in 3 Andean grains under the product degrees out of control, is not stable production indicators. From the process test results, if the mesh size of 2mm,. Table and grinding system less able to 29.5t / h. The final content of the tailings of a 0.074mm sieve to 73.1 {if 4m1 \Oyster, these two kinds of mesh are guaranteed iron concentrate grade of 66 or more. When the sieve to increase to 6mm, the tailings of a O. 074mm, although only 49.8, but the follow-up work for the open ball grinding, sieving mesh in a straight line increase, the load applied directly to the second paragraph of the ball, due to the limited capacity of ball handling, grain coarsening of discharge ( Under the same to the amount of ore), thus affecting the final product, so that the final concentrate grade decreased, pump and pipeline transportation system to increase wear and tear, overload Sec milling, grinding system load unevenly. Sieve the production process should therefore control 4m / n about in order to ensure that the case capacity, balanced load distribution, as far as possible cast ahead of the end, so as to maintain good technical and economic indicators. 4 Pat mentioned before the efficiency of fine sieve, fine sieve Sec efficiency is directly related to the production of milling operations, and affect the processing plant capacity and final product quality. Screening efficiency is low, the return to large, mill load increased, decreased efficiency, but also easily lead to over-grinding of metal materials, causing metal loss. Yuquan sinica processing plant, such as when the fine screening stage efficiency was 13.4, the screen on the yield was 60.62, Sec milling utilization factor 0.21t/Ch ・ m) I when the screening efficiency of 28.4 pairs sieve yield was 53.8N, milling utilization factor of 0.48t / (h ・ m '). In addition, the efficiency of the sieve fine sieve product is milled to have a certain influence on mineral concentrations, respectively 4.5,13.44,28.41,31.31 when screening efficiency, the corresponding objects on the screen concentrations were 4547.6,62.7,58.42, we can see, with the fine screening stage efficiency, increase the concentration of material on the screen, will help improve the efficiency of grinding ball Sec. Therefore, the production process of fine screening operation should be strengthened operations management. Strictly control the quality of the installation, replacement of screen time, balanced to ensure adequate screening area of the mine, the class with high pressure water cleaning screen, reduce congestion, to improve screening efficiency, thereby enhancing the utilization coefficient of ball milling. 5 Conclusion Through the above analysis, Yuquan Ridge processing plant, although grinding system in a series of transformation, and have achieved remarkable results, but there are still some production problems. Further improve the process, enhanced plant capacity, give full play to the potential of the grinding system, concentrate production and to improve the economic efficiency of enterprises is of great significance. Therefore, we should rationally adjust the size of the window from the grinding of gravel in the middle of the exhaust particle size control in grain size - 80mm, and efforts to reduce the crushing of discharge ports, the particle size control in the 30mm into the ground, the tail for the perfect pre-cast technology should be added before crushing magnetic pulley 5 and then throw around the waste rock in addition to ABC full potential in all aspects of the process. Secondly, the two milling operations should be properly adjusted the load line screen sieve size should be adjusted to improve the efficiency of fine screening stage, the fine screen to return a ball to the diversion of materials appropriate to make paragraphs balanced production grinding operations, synchronization to achieve the most good operating conditions in order to improve the integrated processing plant capacity. In addition, the production process should also strengthen the pay section of the grinding operation, plus the management of the ball, so that in a good state of grinding parameters. To improve grinding efficiency. Through these measures, is expected to enable the processing plant capacity to improve the integrated treatment of more than 1O, the annual increase powder 14,000 t, an increase in direct cost 840,000 yuan / a. References 1w. 0 Hz thorn Chuan. 'Translations from the dense Bi ore). North Zhong, metallurgical engineering leek Rights issued on the date of publication of Mu -1983,229 ol 1997, a leap over a 2o j of the base blade. Administration of Production Department Hanxing mineral mining engineer. 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