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高品位
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  high grade
    Technology for Separating Gongchangling High grade Magnetite Concentrate and Low grade Tailings
    弓长岭高品位磁铁矿精矿和低尾矿的选别技术
短句来源
    Study and practice on producing high grade graphite products by using vibrating mill
    利用振动磨生产高品位石墨产品的研究和实践
短句来源
    Application of medium-length hole sublevel open stoping to the mining of thick part of high grade complex orebody
    中深孔分段空场采矿法在高品位复杂难采厚矿段的应用
短句来源
    THE MINING OF THE HIGH GRADE URANIUM DEPOSIT
    高品位铀矿的开采
短句来源
    FEASIBILITY STUDY OF HIGH GRADE PLATINUM-GROUP ELEMENT GEOCHEMICAL GUIDE SAMPLE
    一个高品位铂矿地球化学标样的可行性研究
短句来源
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  high-grade
    STUDY ON TRICKLE LEACHING OF A HIGH-GRADE URANIUM ORE
    某高品位铀矿石淋滤浸出研究
短句来源
    The ore sample tested was the tail of Pan-Zhi-Huan vanadic titanomagnetite after magneticseparation and froth flotation of the sulfides,with particle size minus 0.315mm and TiO_2 content 17.5-18%. A high-grade concentrate of 47.7% TiO_2 with a 67% recovery was abtained in a open circuit flotation (one roughing and two cleaning operation), using solely sulfuric acid as pH regulator.
    对浮选攀枝花钒钛磁铁矿的磁选—浮硫化物后的尾矿—即试料(粒度为—0.315毫米、含TiO_2为17.5—18%),除用硫酸调整pH外,在不需添加其他调整剂的情况下,经一次粗选二次精选就可获得含TiO_247.7%、收率为67%(开路试验)的高品位钛精矿。
短句来源
    Simple filling station and downword hydraulic fill mining method are adopted in Wushan Copper Mine, successfully recovered high-grade extra ore-bodies above minus 40 meter level at the southern mine zone.
    武山铜矿采用简易充填站及下向进路水砂充填采矿方法,成功地回收了南矿带-40m以上高品位的近地表矿体。
短句来源
    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;
短句来源
    High-grade project: the tailing slurry of production system is processed directly by high-efficiency jet floatation machine in pilot section, which adopted a floatation flow sheet of a rougher stage, a scavenger stage and three concentrate stages, the floatation concentration is controlled in 18%-20%; the ethyl xanthate is used as collector, and J-622 is used as frother.
    高品位方案:直接处理生产现场尾矿矿浆,应用高效射流浮选机,采用一次粗选、一次扫选、三次精选浮选流程,浮选浓度控制在18%左右,用乙黄药和J-622作捕收起泡剂,进行半工业试验。
短句来源
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  higher grade
    With this new flowsheet, a higher grade flotation concentrate of 20.51%Cu was obtained by a closed circuit flotation test, with the copper recovery being more than 82%.
    采用新流程进行闭路试验,获得了品位为20·51%的高品位铜精矿,铜回收率达82·61%;
短句来源
    It shows that better economic and technical quota can be obtained and possesses great practical significance for the utilization of higher grade gold-bearing tailing.
    对较高品位的含金尾矿的利用有很大的现实意义。
短句来源
  “高品位”译为未确定词的双语例句
    The results showed that bentonite content reached 95.97% after purification from 91.79% before wet purification.
    结果表明,湿法提纯前钙基膨润土的蒙脱石含量为91.79%,是一种高品位钙基膨润土,提纯后蒙脱石含量达到95.97%。
短句来源
    PRACTICE AND DISCUSSION ON HIGHGRADE ORES CONCENTRATING
    高品位矿石的选矿实践与探索
短句来源
    Study on ultra-high grade and regularity of mineralizing enrichment at Hetai gold deposits
    对河台金矿床特高品位及成矿富集规律的研究
短句来源
    Study on ultra-high grade and regularity of minerogenetic enrichment of Hetai Gold Deposits
    河台金矿床特高品位及成矿富集规律研究
短句来源
    Experiments on the Preparation of Mixed Salt with High-Content of Li_2CO_3 in Solar Pan of Zhabuye Saline Lake,Tibet,and Its Significance
    西藏扎布耶盐湖盐田高品位Li_2CO_3混盐的制取试验及意义
短句来源
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  high grade
We report a case of a woman with bilateral silicone breast implants who presented with recurrent high grade fever, joint and muscle aches.
      
In none of the patients permanent high grade AV block was observed.
      
A high grade increase of platelet activation was found.
      
Results Eighteen of the 27 patients had coronary artery disease with either thrombotic coronary occlusions, high grade stenosis or complete vessel occlusion.
      
The present paper reports on a patient without angiographically high grade stenosis after thrombolysis.
      
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  high-grade
In high-grade line pipe steels, the control of strain accumulation behavior is the key to the control of grain size.
      
The present-day critical situation in this field is outlined and means of the prospecting for high-grade nickel ore deposits in the Urals are proposed.
      
The potassium tobelite is an indicator of high-grade metamorphism (up to anthracite rank) of the organic matter in coal-bearing sequences.
      
We studied the high-grade (granulite) domain known as Slyudyanka crystalline complex of the southern Baikal region.
      
A unique record of P-T history of high-grade polymetamorphism
      
更多          
  higher grade
Free amino acids, the key quality components of tea, are contained in higher amounts in higher grade teas.
      
Three of eight individuals showed EGFR gene amplifications in both tumours with a higher grade of amplification in the second tumour.
      
The cases with EC cell (++) or polypeptide positive cells exhibited higher grade of differentiation, earlier stage of tumor extension and higher survival rate than those without EC cells.
      
OMFRSEF occur in adults in various locations, but with a common propensity to involve bone; there is recurrent potential and morbidity with higher grade lesions.
      
Narratives of individuals with high peritraumatic dissociation had higher grade levels and a trend toward lower reading ease than those with low peritraumatic dissociation.
      
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In the present paper the dressing technology of wolframite ore in China and its technological results in the following operations, e. g. pre-concentration, crush- ing, gravity separation, slime treatment, cleaning rough concentrates and recovery of associated minerals are described, A common assessment is given, too. In most of wolframite mills in our country hand sorting as a pre-concentration is employed and in several mills the heavy-media separation or photometric sorting combined with hand sorting is used,...

In the present paper the dressing technology of wolframite ore in China and its technological results in the following operations, e. g. pre-concentration, crush- ing, gravity separation, slime treatment, cleaning rough concentrates and recovery of associated minerals are described, A common assessment is given, too. In most of wolframite mills in our country hand sorting as a pre-concentration is employed and in several mills the heavy-media separation or photometric sorting combined with hand sorting is used, by which the reject of barren rock is 50-70% from the feed. Recovery of WO_3 in this operation is 97-98%. The crushing plant flowsheet is generally performed in two or three stages in closed circuit and a few in open circuit. The size of final crushed products is minus 10 mm. The crushed products are screened into three classes of size, which is fed onto jigging. The jig tailings of coarse size and middle size are given to rod mill, and the products are send to jig again, the jig tailings are returned to the screening. The fine jig tailings are fed onto tables after classifying. The concentrates from jigs and tables are combined and cleaned either in the same mill or in a consolidated cleaning plant. The table middlings are returned to tabling or to tabling after grind- ing in rod mill. The table tailings are rejected as waste. The recovery of WO_3 in this operation is 92-93%. The slimes are treated separately. In most of mills a gravity flowsheet is adopted, in which the tables, tablecloth sluices, table-centrifugal separators are used for treating the slimes. In several mills flotation is used. The lower size limit of the table feed is 37 microns. The recovery of WO_3 in this operation is more than 70%, while the lower size limit of the centrifugal separator feed is 10 microns. The recovery of WO_3 is 60-65%. Flotation is used for roughing slimes with recovery of more than 80% WO_3. The poor tailings (above 80%) are rejected. But results of cleaning the rough concentrates by flotation are unsatisfactory. However flotation is suitable to cleaning the rough concentrates from the centrifugal separators. A method combined with flotation, gravity, magnetic separation, electrostatic separation, hydrometallurgy process, and roasting is applied for cleaning the rough concentrates. In the cleaning operation recovery above 95% WO_3 is obtained. Many associated minerals are recovered from various concentrates. The rough concentrates containing cassiterite and bismuth oxide are subjected to magnetic or electrostatic separation for recovering these minerals. Other asso- ciated minerals are recovered usually by flotation. The complexity in ore composi- tion leads to use of multistages of operation and to lower recovery. Owing to research and practice in tungsten ore treatment for 30 years in our country the poor ores are now can be treated to produce high-grade concentrates with recovery of 80-85% WO_3. Rich experience accumulated has laid solid founda- tion of further development of tungsten industry in China.

本文通过对黑钨矿选矿的几个环节:矿石的预选、碎矿、重选、矿泥选矿、粗精矿精选和伴生矿物的回收的叙述和分析,扼要介绍我国在这些方面积累的经验。说明我国黑钨选矿厂如何在原矿品位很低的情况下,获得了高品位的钨精矿和较高的回收率。文中还对我国钨矿资源的分布和地质情况作了简要的介绍。

The effects of kerosene on the flotation of ilmenite with styrylphosphoric acid were investigated. The addition of kerosene may enhance the rate of flotation, enlarges the limit of the particle size, reduces the amount of primary collector used, improves the selectivity and properties of the foams. The ore sample tested was the tail of Pan-Zhi-Huan vanadic titanomagnetite after magneticseparation and froth flotation of the sulfides,with particle size minus 0.315mm and TiO_2 content 17.5-18%. A high-grade concentrate...

The effects of kerosene on the flotation of ilmenite with styrylphosphoric acid were investigated. The addition of kerosene may enhance the rate of flotation, enlarges the limit of the particle size, reduces the amount of primary collector used, improves the selectivity and properties of the foams. The ore sample tested was the tail of Pan-Zhi-Huan vanadic titanomagnetite after magneticseparation and froth flotation of the sulfides,with particle size minus 0.315mm and TiO_2 content 17.5-18%. A high-grade concentrate of 47.7% TiO_2 with a 67% recovery was abtained in a open circuit flotation (one roughing and two cleaning operation), using solely sulfuric acid as pH regulator.

本文研究了苯乙烯膦酸浮选钛铁矿时,添加煤油能够提高浮选速度、扩大浮选粒度界限、降低主捕收剂的用量、提高选择性和改善泡沫性质等良好效果;对浮选攀枝花钒钛磁铁矿的磁选—浮硫化物后的尾矿—即试料(粒度为—0.315毫米、含TiO_2为17.5—18%),除用硫酸调整pH外,在不需添加其他调整剂的情况下,经一次粗选二次精选就可获得含TiO_247.7%、收率为67%(开路试验)的高品位钛精矿。

The specific structure,technological characteristics and the operation principle of the spiral chute are briefly described in the paper,emphasis being laid on its practice of separating hematite,tin,tungsten,tantalum and niobium ores and other heavy minerals. The spiral chute has spiral segments with cubic-parabolic cross section,and during its operation neither mid-way cut-off of the concentrate nor adding of wash-water are needed.It is composed of glass-fibre reinforced plastic segments with wear resistant...

The specific structure,technological characteristics and the operation principle of the spiral chute are briefly described in the paper,emphasis being laid on its practice of separating hematite,tin,tungsten,tantalum and niobium ores and other heavy minerals. The spiral chute has spiral segments with cubic-parabolic cross section,and during its operation neither mid-way cut-off of the concentrate nor adding of wash-water are needed.It is composed of glass-fibre reinforced plastic segments with wear resistant lining,which have resulted in a light but reliable and durable design,and in an exact configuration.Its feed distributor and product dischargers are all of simple structure, easy to control. The spiral chute has been proved suitable for separating fine-grained heavy minerals,effective separation size ranging from 0.3 to 0.03mm.Treating Anshan type fine-grained and low-grade hematite ore by the commercial four-start glass-fibre spiral chutes,(?)1200mm,can obtain,after one stage primary separation and one cleaning,a concentrate grading 65-67% iron,with operation recovery 74-76%.This type spiral chute can also be used,with less investment and faster economic effect,to recover iron values from tailings,discarded by existing iron concentration plants.The chute is expected to be promising for treating the ores in which a considerable specific gravity difference is inherent between the valuable minerals and the gangue,such as tin,tungsten,tantalum and niobium ores and other heavy minerals.

本文简要介绍了螺旋溜槽的结构特点,技术特性和选别原理。着重叙述了螺旋溜槽选别赤铁矿、锡矿、钨矿,钽铌矿和其它重矿物的选别实践。螺旋溜槽的螺旋槽横截面曲线为立方抛物线,在分选过程中间不截取精矿,也不加冲洗水。螺旋槽由具有耐磨层的玻璃钢螺旋片联接而成,质轻而坚固,形状准确,经久耐用。给矿匀分器和产品截取槽结构简单,控制方便。螺旋溜槽适于选别细粒重矿物,有效选别粒度范围为0.3~0.03mm。用直径1200mm工业型四头玻璃钢螺旋溜槽选别鞍山式细粒贫赤铁矿时,经一次粗选和一次精选,可得含铁65~67%的高品位精矿,作业回收率74~76%。螺旋溜槽还可用来从现有铁选厂的尾矿中回收铁,投资少,收效快。螺旋溜槽用于选别有用矿物和脉石比重差较大的锡矿、钨矿、钽铌矿和其它重矿物,有广阔前途。

 
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