Experimental results showed that an average rejection of 88 . 16 % calcium sulfate could be achieved by a two - stage flotation operation , approaching the theoretical removal ratio of 91 . 58 % from crude carnallite 实验结果表明，分级浮选法除钙率平均达88 . 16 % ，接近原矿的理论可除钙离子量91 . 58 % 。
New copper - extracting technologies can use up to 40 percent less electricity than the older method to process the same amount of raw ore , especially when the proportion of copper in the ore is high 新的铜提取技术在处理同等数量的原矿石时能够比老的方式节省40的电力，特别是当矿石中铜的比例比较高的时候。
Addressing problems of failure to meet requirement in ore quality of oremarket at the second stage mining , meishan mining company , the paper analyzes the reasonsand explores ways of raising ore grade 针对上海宝钢集团梅山矿业公司在进入二期开采后，出现的矿石品位下降，不能满足市场需求的矛盾，分析原因，并探索了提高原矿品位的有效途径。
Abstract : this thesis deals with both the development of a new ore vibrating grizzly and the importance of continuous operation for drawing and carrying with the equipment and lays an emphasis on the industrial experiment of the equipment 文摘:论述了研制新型原矿振动条筛与实现采场出矿运输连续作业的重要性，并着重介绍了该设备进行工业试验的应用情况。
When the crude ore contains copper 1 . 84 % , the technical indexes such as the grade of copper concentrate 22 . 37 % and the recovery 78 . 70 % are obtained by use of single - stage grinding , one time of roughing , three times of scavenging and two times of cleaning 当原矿含铜1 . 84 %时，经过一段磨矿、一次粗选、三次扫选和二次精选，获得铜精矿品位22 . 37 % 、铜回收率78 . 70 %的技术指标。
Evaluating effects to parlygorskite organising modification by x - ray , tem , sem , ir , viscidity analysis etc . contrasting organising modification effects of parlygorskite original ore and acidified palygorskite , the result shows wd - 51 modification agent has better modification effect to acidified pargorskite than parlygorskite original ore 对比了用wd - 51对坡缕石原矿和酸化坡缕石进行有机化改性处理的改性效果，表明wd - 51对酸化坡缕石的改性效果要好。
On the basis of the statistical analysis of the annual production data of aoshan concentrator , the mathematical models for the relationship of the concentrate quality indexes ( concentration ratio , concentrate grade and recovery ) with run - of - mine ore grade and hourly throughput per unit were established and analysis of their relationship was made , which has a direct effect on guiding the concentrators production and ensuring the concontrate quality 通过对凹山选矿厂全年生产报表数据的统计分析，分别建立了精矿质量指标(选矿比、精矿品位、精矿回收率)与原矿品位、台时处理量之间的数学模型，并对其之间的相互关系作了分析，对指导凹山选矿厂生产、保证精矿质量有着直接的指导作用。
In order to verify the natural radioactivity level , of tin polymetallic ore in southeast yunnan , and find out radioactive pollution in mining , dressing and smelting processes , 10 tin ores in this area were chosen to measure radionuclides ' specific activity in each kind of tin polymetallic ore , undressed ore , ore concentrate , debris and smelting slag 摘要为查明滇东南锡多金属矿天然放射性水平，了解锡矿采、选、冶过程中的放射性污染，选择了该区10个锡矿山，测量了各类锡多金属矿原矿、精矿、尾矿及冶炼炉渣放射性核素比活度。
It is shown that the radioactivity level of tin polymetallic ore , undressed ore and adjacent formation is affected by the strata and mineralization type , the radioactivity level of sulfide ore is not high as a whole , while that of tin ore generally is several times higher than the background value and that of debris and slag is also relatively high , whose impact on the environment is not neglectable 锡多金属矿原矿及围岩放射性水平受地层与矿化类型影响很大，硫化矿整体放射性水平不高，砂锡矿却普遍高出背景值数倍，尾矿、炉渣放射性水平也相对较高，对环境的影响不容忽视。
Although many of the beneficial effects of crystals are not explainable by our limited knowledge , scientists do know they possess a crystalline structure that can collect , focus , and emit electromagnetic energy . crystals have been put too practical use in many ways . they transmit and receive radio waves , set the timing of our quartz watches and our computers 而大部分的白水晶都有包含冰裂、云雾等等内涵物，完全通透的白水晶除非是小体积的（从大原矿直接切磨出来) ，大体积而又完全通透的白水晶价格较贵而且市面上假货比较多(尤其是白水晶球） ，所以在购买的时候千万要小心。
