The particle size of grinding circuit is the important factor to the grade of concentrated ore and metal recovery rate.
磨矿分级作业是选矿生产过程中至关重要的环节，磨矿粒度的好坏直接影响到浮选的精矿品位和回收率。
A rinsing device is arranged for washing the concentrated ore, thus further removing the impurities in the concentrated ore.
设置漂洗装置对精矿进行冲洗，进一步去除精矿夹杂。
The invention has the characteristics of good sorting effect, high concentrated ore quality, simple structure, convenient maintenance, long service life, etc.
本结构还具有分选效果好，精矿品位高，结构简单，维修方便，使用寿命长等特点。
As the best bodies of ore are exhausted, miners move on to less concentrated deposits in more difficult natural circumstances. These mines cause more pollution and require more energy.
含量的百分率愈大，品位愈高-译注最好的矿砂开采殆尽，矿主们会转向开采那些品位不好的矿，但会面临更困难的自然条件，开采这些矿会带来更多的污染，也会需要更大的能耗。
The leaching mechanism of niobium from a refractory niobium-tantalum ore by concentrated potassium hydroxide was studied.
实验研究了难分解铌钽矿在高浓度氢氧化钾溶液中浸出过程的机理。
Germanium can be concentrated in silicate ore deposit, sulfide ore deposit and coal, and partly in porphyry and carbonate, therefore it has good industrial development future.
锗主要赋存于硅酸盐矿床、硫化物矿床和煤中，在部分斑岩和碳酸盐中也发现有锗的存在，且具有工业开发的价值。
Germanium can be concentrated in silicate ore deposit, sulfide ore deposit and coal, and partly in porphyry and carbonate, therefore it has good industrial development future.
锗主要赋存于硅酸盐矿床、硫化物矿床和煤中，在部分斑岩和碳酸盐中也发现有锗的存在，且具有工业开发的价值。
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