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 anionic reverse flotation ensures qualified concentrate grade.
阴离子反浮选保证了精矿品位合格。
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。
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。
Research results showed that re-concentration of magnetic concentrate was an efficient way to increase iron concentrate grade.
研究表明，磁铁精矿反浮选是提高庙沟铁矿铁精矿品位的有效途径之一。
The automatic pulp-level control is an important factor that affects the mineral recovery rate and the concentrate grade directly.
浮选矿浆液位的控制，是直接影响选矿回收率及精矿质量的一个重要因素。
If roasting temperature was too high then energy consumption was increased without improvement in iron and boron concentrate grade.
焙烧温度过高选后硼铁精矿粉品位变化不大，能耗增大。
Magnetic roller through rotational speed motor that responds to adjust speed table by separators, can control the output and concentrate grade.
磁辊通过调速电机拖动，转速的快慢通过调速表来进行调节，可控制磁选机的产量和精矿品位。
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；
Based on the process mineralogy research on improving iron concentrate grade and recovery, reduce the phosphorus content in iron ore concentrate is proposed.
根据工艺矿物学研究成果对提高铁精矿品位和回收率、降低铁精矿中的磷含量给出了建议。
Because magnetic department for, the mineral grains occurs extremely mixed with magnetic mechanic inclusion gangue off, thus make concentrate grade was improved.
因磁系的极替，矿粒发生磁搅伴使机械夹杂的脉石脱落下来，从而使精矿品位得到提高。
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。
In connection with Meishan Iron for sorting, the final concentrate grade can reach 53.74%, the operating rate was 64.61%, higher than the selected plants on the separation indexes.
针对选别梅山铁矿，其最终精矿品位可以达到53.74%，作业回收率为64.61%，高于选厂分选指标。
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。
Test for changing regrinding position during molybdenum processing process was conducted in order to determine suitable regrinding position and increase molybdenum concentrate grade.
通过改变钼选矿过程中再磨位置的试验研究，确定出合适的再磨位置，以提高钼精矿品位。
Strong magnetic separation machine adopts permanent magnet department multistage choose don't design, stable work, concentrate grade can make a large quantity of also can be guaranteed.
强磁选机采用永磁磁系多级选别设计、工作稳定、精矿品位能使处理量大时同样得以保证。
High speed, the magnetic particles by centrifugal force big, unit time magnetic double function was added, concentrate grade and processing capacity are high, but recovery rate is lower.
转速高，矿粒所受离心力大，单位时间内磁翻作用曾加，精矿品位与处理能力都高，而回收率则降低。
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x FD浮选机有优势。
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。
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。
Through the technical improvement, the iron concentrate grade is increased from 63.00% to 65.50% and its recovery is enhanced from45.00% to 70.00% with remarkable economic benefits obtained.
通过工艺改造，选矿回收率由改造前的45.00％提高到70.00％，铁精矿品位由改造前的63.00％提高到65.50％，取得了显著的经济效益。
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。
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。
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。
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。
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。
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。
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 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。
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。
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