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采矿外文翻译---从弱磁选尾矿中回收铁的工艺探讨

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采矿外文翻译---从弱磁选尾矿中回收铁的工艺探讨

英文翻译 From the weak magnetic separation tailings in recycling process of iron 1 before Before the 1990s, small iron mines in each half with weak magnetic separation recycling of strong magnetic iron content, relatively weak magnetic of hematite, hematite, limonite because by don t invest big or high production costs, the price of iron concentrate and relatively low and tailings dam exists in a heap. With the development of science and technology, comprehensive utilization of mineral resources and the environment protection, and the increase in the price of iron concentrate, with low cost recovery of weak magnetic hematite, hematite, brown iron has become possible. This study from guangdong yangchun ore mining of a half ferric oxide magnetic separation tailings, adopt more weak square case can better recovery are relatively weak magnetic iron content, iron recovery to 76 93, iron concentrate grade56 51. 2 sample properties This specimen from tailings directly take less valuable, iron, 39 of sample analysis, screening and iron in the level of grain distribution see table 1. From table 1, 0 2mm grains relative low iron grade level 0-074mm grain, a higher level of iron products, 56, 26. Sample iron ore, mainly illusion chek limonite hematite, exists in the of gangue minerals, mainly for quartz.Table 1 sample of screening analysis and distribution of ironIn total 100. In 2006, 100. 39 3 for the process Due to the sample iron minerals mainly illusion hematite, hematite, limonite of existence, and the gangue minerals mainly for quartz, so useful mineral and gangue minerals existing differences exist in magnetic again, can use the proportion between, magnetic flux re-election, re-election magnetic re-election to select scheme as separate iron and gangue minerals. 4 for processes and results 4.1 one chosen process research The use of magnetic flux study machine strong magnetic separation machine 1 in the case of square, magnetic choose machine belt of strong magnetic re-election machine 2, in the solution of magnetic separation machine bed 3, spiral scheme of belt conveyor mineral machine strong magnetic separator 4 heavy scheme of fourChoose don t plan to separate iron and gangue minerals, don t flowCheng see figure 1-2, don t see table 2 5 results. 4. 2 results From table 2 5 results indicated that the highest recovery plan 1 iron for 93. 56, 3 81. 37, 2 and 4 in case party, don t be in close 76 percent and j76. 52 percent, iron concentrate grade scheme for 56. 4 highest 56,Fang fang and 2 in case of three phase for nearly five 5 don t points, 4 5 and55 percent, minimum for 51. Plan 1 28. 1 and 2 from the scheme and the scheme of the three schemes, strong comparative 2 concentrate separation The weak magnetic minerals recovery efficiency of iron ore recovery, 70, 66, followed by 41, bed 58.For the poor with strong magnetic separator in 53.87 of heavy, Iron concentrate grade and belt in the bed near strong magnetic separator heavy, 5 3 5 53 4 5 and 5 , strong magnetic chosen for the low machine48. 87. The main reason is strong magnetic separation machine put some iron and gangue minerals to choose the birth body of iron concentrate, so as to enhance the recovery of iron, reduced iron concentrate grade. With strong magnetic separator in weight of magnetic minerals, though, but the back to improve water cleaning, should concentrate grade,The increased flow, with some even slurry was born and granule iron into tailings, reduce the rate of recovery of iron. Bed is a sorting accuracy of equipment, if things exist between the certain proportion of material, can very well,

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