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- In view of the low ore grade and recovery of the flotation concentration,improving grinding fineness,promoting the concentration grade of copper 1. 针对该矿浮选精矿品位及回收率偏低的现实,通过提高磨矿细度,铜精矿品位提高1。
- Practices showed that desliming can not only reduce slime content, but also increase concentrate grade greatly. 实践表明,通过脱泥,不但能减少精矿中的含泥量,而且精矿品位有较大幅度的提高。
- The locked cycle tests mainly based on collector H-4 and activator NS-6 demonstrate that silver concentrates grade are 0.45% at 84.5% Ag recovery. 以H-4为捕收剂、NS-6活化剂为主的用药制度下的闭路实验结果表明,银回收率达84.;5%25,银精矿品位为0
- A beneficiation plant has improved its flowsheet thus achieved good benefits in increment of concentrate grade &iron recovery rate and in decrement of tailing's grade. 介绍了某选矿厂通过选矿工艺流程技术改造,提高了精矿品位、回收率,降低尾矿品位,取得了较好的经济效益。
- Pupils who pass the test will be promoted to the next higher grade. 小学生只要考试及格就会升到高年级。
- The results indicate that under the same experimental conditions,both the concentrate grade and recovery of the new type of flotation column are higher than those of Jameson column and XFD flotation cell. 试验结果表明,在同等试验条件下,无论是精矿品位还是回收率,新型细粒浮选柱都高于Jam eson射流浮选柱和XFD机械搅拌浮选机。
- Test results show that in the same experimental conditions,the new ring-like type flotation column has superiority in recovery and concentrate grade compare to the XFD flotation machine. 试验证明,在相同的试验条件下,新型环形浮选柱无论是回收率还是精矿品位都比XFD浮选机有优势。
- Because of filtration overfall from Panzhihua Midi Mill Plant being dealed with irrationality and concentrate grade being not stable,some improvements on the folw for filtration overfall are made. 针对密地选矿厂现有选别流程中过滤溢流处理不合理、精矿品位不稳定现象,提出了过滤溢流集中处理的流程改进方案,并通对实验室试验和工业试验,验证了改进流程的合理性。
- Research showed that cobalt concentrate grade and recovery both could be increased if flotation performanced in a sulphuric acid medium and addition of suitable amount of oxalic acid. 研究表明,在硫酸介质中加入适量的草酸可以提高精矿中钴的品位和回收率。
- He's not in the first grade as a musician. 他不是第一流的音乐家。
- Business is now on the up grade. 目前生意蒸蒸日上。
- His area of concentration is nuclear physics. 他的专门研究范围是原子物理学。
- Pupils with 90% or more are awarded Grade A. 满90分的学生评为甲等。
- The drug affects one's power(s) of concentration. 这种药影响人精神不能集中。
- There is a concentration of people in big cities. 大城市人口集中。
- The sixth grade saw an educational film yesterday. 六年级学生昨天看了一部教育片。
- He received a failing grade on the term paper. 他的期末报告不及格。
- He seized every chance to break out of the Nazi concentration camp. 他抓住一切机会从纳粹集中营跑出来。
- Red and yellow grade into orange. 红与黄混合成橘黄。
- A state of mental concentration. 专心致志,全神贯注全神贯注的状态