At present, there are problems of both low concentrate grade and low recovery in the production.
目前，在生产中存在着精矿品位及回收率均比较低的问题。
Accortling to the characteristics of concentrate, the authors analyse the reasons why the iron grade of roasted magnetic separation concentrate is not high.
从精矿性质特点着手，分析了酒钢选厂焙烧磁选精矿铁品位不高的原因和主要影响因素。
The means of producing high grade iron concentrate using imported fine screening technology at JSC "SSGPO" Iron Mine are described.
介绍了JSC“SSGPO”铁矿引进细粒筛分技术生产高品位铁精矿的手段。
The production testing and flowsheet investigation have shown that better recovery and grade of concentrate can be achieved with the application of the new technology in Dongshan Concentrator.
生产调试和流程考查表明，东山选矿厂采用阶段磨选工艺可获得精矿品位和回收率双提高的较好指标。
The scientific achievement for increasing Mo -grade of Cu-Mo bulk concentrate in Dexing Copper Mine and its application to production are presented.
介绍了德兴铜矿提高铜钼混合精矿用品位的几项科研成果以及在生产中应用情况。
In this paper, the necessity of increasing and optimizing the grade of iron concentrate is set forward, and the possible technique way and research thinking are also introduced.
本文从宏观角度出发阐述了提高和优化铁精矿品位指标的必要性、可能的技术途径及优化研究的思路。
This new process is an effective means for the iron increase and silica decrease of concentrators and for realizing the improvement of iron concentrate grade, being worth further spreading.
该新工艺是选矿厂提铁降硅及实现提高铁精矿品位的有效手段，可进一步大力推广应用。
Proper sodium sulphide can increase the floating speed of Cu mineral in slag and Cu grade of concentrate on the premise that the desired recovery is gained.
探讨了硫化钠的作用机理，硫化钠可提高铜矿物浮游速度，在预期回收率前提下提高铜精矿品位。
Study is made on the upgrading of Co from low-grade concentrate calcine leachateand its separation from impurities.
研究了从低品位硫钴精矿焙砂浸出液中钻的富集及其与杂质的分离问题。
With the grade of molybdenum concentrate unsteady, the recovery is low in processing production of the concentrator.
选矿厂的铜钼选矿系统出现了透辉石类含铜钼矿石，使钼浮选钼精矿品位不稳定、回收率低。
The technique can not only increase greatly the thronghput capacity of the plant's ball mills, but also maintain the original grade of concentrate.
该工艺在保证精矿品位的前提下可较大幅度地提高球磨机处理能力。
The concentrate grade was 20.14% with the recovery of 78.98%.
采用组合磨矿的闭路试验得到最终精矿品位为20.14%，回收率为78.98%。
The results show that a rare-earth concentrate with a grade of 52% can be obtained by one roughing and two cleanings.
结果表明，经一次粗选、二次精选选别，可获稀土精矿品位52％。
At present, the grade of Miaogou iron concentrate was only 64.26% with high content of silicon.
庙沟铁矿目前最终铁精矿品位只有64.26%，精矿中含硅较高。
From the macroscopic point of view, the necessity of improving and optimizing the iron concentrate grade index, the potential technical ways and the thought on optimization study are described.
从宏观角度出发，阐述了提高和优化铁精矿品位指标的必要性、技术途径及优化研究的思路。
Drum separator cannot produce high-grade iron concentrate because it cannot remove the locked particles and gangue in the agglomeration formed in the process of magnetic separation.
永磁筒式磁选机由于无法将磁团聚中夹杂的连生体和单体脉石有效地剔除，所以很难获得高品位精矿；
The results showed that, an iron concentrate with a TFe grade of 65.50% and a recovery of 83.09% can be obtained by the closed-circuit bench test.
结果表明，采用选择性絮凝脱泥-阳离子反浮选流程闭路试验可获得铁精矿品位为65.50%，回收率为83.09%的较好指标。
The water and the magnetic must be improved and strengthen, so that the recovery of the magnetic mineral and the Fe concentrate grade is improved.
加强磁场强度以增加对磁性矿物的回收和加强切向给入的上升水流的强度以加强对非磁性矿物的淘洗，提高精矿品位；
The analysis ascribed the increase of iron concentrate grade by airflow to the air-flow agitation and the negative pressure or strong disturbance as gas bubbles broke down.
分析认为，气流能提高铁精矿品位归功于气流的搅拌作用和气泡破碎时形成的负压及强扰动。
Choose don't over a long period of time, high, but the concentrate recovery from the eduction is close to ore mouth, magnetic double function poor, so concentrate grade is relatively low.
选别时间较长，回收率较高，而精矿排出端离给矿口较近，磁翻作用差，所以精矿品位较低。
The average leaching recovery of gold reaches 86.01% from high grade raw ore and flotation concentrate of gold in pilot test.
半工业试验对浮选金精矿和高品位原矿平均金浸出率达86．01％。
Through technical reform, No. 3 Concentration Workshop of Dagushan Concentrator has effectively raised the grade of iron concentrate to over 65% so as to achieve good results.
介绍了大孤山选矿厂三选车间通过技术改造，有效地将铁精矿品位提高到6 5 %以上，取得了较好的效果。
The prospect and the application state of high grade iron concentrate are described.
介绍了高品位铁精矿用于生产海绵铁和粉末冶金的现状及前景展望。
By adding sodium sulphide to depress quartz in the cleaning, high grade fluorite concentrate can be gained, whose content of silicon is under 1.0%, grade is over 97% and recovery is higher than 87%.
同时采用精选补加硫化钠抑制石英，得到了含硅量低于1.0%，品位高于97%，总回收率高于87%的高品级萤石。
The results showed that under the same test conditions, not only the concentrate grade but the recovery of the packed flotation machine were higher than those of conventional ones.
试验结果表明，在同等试验条件下，充填式浮选机无论品位还是回收率都高于普通浮选机浮选指标。
The tests showed that an iron concentrate having a 65% iron grade could be obtained, but it had a rather high content of sulfur that should be reduced by some additional treatment.
试验表明：采用磁选柱选别可得到6 5 %以上的铁精矿。但精矿中硫含量偏高，需要进行降硫处理。
After magnetic separation of the classifier's overflow, the iron recovery is 2 18% higher than that obtained by conventional process, while the iron concentrate grade remains nearly constant.
新型螺旋分级机溢流产品经磁选后，在铁精矿品位相近的情况下，铁回收率比传统工艺提高218个百分点。
After magnetic separation of the classifier's overflow, the iron recovery is 2 18% higher than that obtained by conventional process, while the iron concentrate grade remains nearly constant.
新型螺旋分级机溢流产品经磁选后，在铁精矿品位相近的情况下，铁回收率比传统工艺提高218个百分点。
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