low-grade相关论文
The metallurgical studies and pilot plant tests to evaluate low-grade copper oxide ores for heap lea
Tuwu copper mine is located in the Gobi Desert in Xinjiang, China.As a result of biological,environmental and economic c......
Purpose To compare the surgical managements of low-grade spondylolisthesis whether arthrodesis in situ or arthrodesis af......
Endoscopic trans-pterygoid resection of a low-grade cribriform cystadenocarcinoma of the infratempor
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We present a rare case of synchronous mucinous borderline tumor of the ovary and low-grade appendiceal mucinous neoplasm......
目的了解川北医学院低年级学生疏离感现状，以帮助他们尽快适应大学生活、提高心理健康水平和形成健康人格。方法于2015年4月至5月采......
摘 要：《小学语文课程标准》在第二部分指出一二年级的写话目标是：“对写话有兴趣，写自己想说的话，写想象中的事物，写出对周围事物的认......
This study tries to examine the correlation between Chinese EFL learners’ accent perception accuracy of and their liste......
Extraction of niobium, yttrium, and cerium from a low-grade niobium-bearing ore by roasting (NH4)2SO
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With China’s rapid economic development,it is important to formulate reasonable and feasible tax and fee policies to pr......
Sodium sulfide leaching of a low-grade jamesonite concentrate in the production of sodium pyroantimoniate through the ai......
With China's rapid economic development,it is important to formulate reasonable and feasible tax and fee policies to pro......
研究了用氢氧化钠溶液从某低品位氧化锌矿石中浸出锌,考察了反应温度、反应时间、初始碱浓度、搅拌速度等对锌浸出的影响。结果表......
随着电子、材料等尖端行业的迅速发展,铌因其独特的物化性质已被视为关键战略性金属资源,其需求量逐年递增,铌的冶金提取技术也受......
We investigated whether the vertical roller mill can be efficiently used in the beneficiation of low-grade magnesite and......
本文在吉林省耕地质量评价基础上,分析了低等级耕地(七等地、八等地、九等地、十等地)的分布情况,并采用分类汇总的方法,对各障碍......
As a drug-mechanical combination technology,photodynamic(PDT)can achieve accurate and taurgeted therapy for maligmant tu......
Tin recovery from a low-grade tin middling with high Si content and low Fe content by reduction–sulf
A new method for separating and recovering tin from a low-grade tin middling with high Si content and low Fe content by ......
Hydrometallurgical leaching and kinetic modeling of low-grade manganese ore with banana peel in sulf
Manganese was leached from a low-grade manganese ore(LGMO)using banana peel as the reductant in a dilute sulfuric acid m......
Reductive recovery of manganese from low-grade manganese dioxide ore using toxic nitrocellulose acid
The hydrometallurgical strategy of extracting Mn from low-grade Mn ores has attracted attention for the production of el......
文章从湖南省铜矿保有资源储量实际情况出发，总结省内铜矿资源现状和开发利用现状；通过推介国内最新选矿技术，分类分析省内低品位、共......
为了拓展矿山资源，适应原矿品位逐渐下降的趋势，对云锡公司新发现的前进坑玄武岩低品位硫化矿进行了详细的选矿试验研究。工艺矿物学......
本文介绍了国内某低品位重晶石矿的选矿工艺研究，该重晶石原矿BaSO。含量为63．79％。通过对该矿石性质的分析和浮选试验研究，确定了选别......
对云南某地重晶石矿进行了化学组成研究和工艺矿物学研究,结果表明该矿石中有价矿物重晶石具有低品位、细粒嵌布的特征.在此基础上......
Duodenum and ventral pancreas preserving subtotal pancreatectomy for low-grade malignant neoplasms o
AIM To describe the indications, technique and outcomes of the novel surgical procedure of duodenum and ventral pancreas......
针对攀西某含TFe24.44%、TiO26.76%的低品位矿石开展了多种选铁工艺流程的比较试验研究,结果表明:若不考虑钛铁矿的回收利用,同时......
探讨了从低品位铜矿制取硫酸铜的工艺条件，并针对制取过程的除铁进行了研究．...
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地方低等级公路平交道口涉路工程是我国道路建设的重要组成部分,对其进行安全评价至关重要。以贵州省望谟县打尖经纳坡至打岩乡村......
西南某低品位铅锌矿石铅品位为2.99%、锌品位为1.57%,伴生银品位为10.80 g/t,铅、锌均主要以硫化物的形式存在。为高效开发利用该......
Preparation and properties of a low-cost porous ceramic support from low-grade palygorskite clay and
Alow-cost porous ceramic support was prepared from low-grade palygorskite clay(LPGS) and silicon carbide(SiC)with vanadi......
试验所用矿石来自我国云南某金矿，该矿含金2.4g／t，砷0.97％，碳1.47％，它是典型的低品位含碳双重难处理金矿石，浮选精矿-氰化提金，金浸出率为10......
Suspension calcination and alkali leaching of low-grade high-sulfur bauxite:Desulfurization, mineral
To enable the utilization of low-grade and high-sulfur bauxite, the suspension calcination was used to remove the sulfur......
Intensive care unit(ICU)needs professional nursing staff with high professionalism to ensure the quality of nursing work......
研究了粉煤灰掺量、粗骨料孔隙率、砂率、外加剂等因素对低强度等级自密实混凝土工作性能的影响规律。结果表明：适当降低水泥用量,......
氰化堆浸技术在低品位矿提金方面应用广泛，而在提银方面应用较少。区吾银矿采用该技术从低品位矿中提银，取得了成功，值得推广和借鉴。......
本文主要针对云南某地低品位氧化铜矿样进行了选矿试验研究。试验结果表明：采用混合捕收剂，经过一次粗选、一次扫选和两次精选的浮选......
为了充分利用云南卡房新山缓倾斜难选极低品位多金属矿床资源，在工艺矿物学研究、小试、连选试验的基础上，采用“硫化矿混合浮选一混......
该矿石矿物种类繁多,主要金属矿物有黄铜矿、辉钼矿、黄铁矿以及白钨矿等。原矿含WO3为0.19%,属低品位钨矿。在工艺矿物学研究的基......
BACKGROUND:Pancreatic tumors located in the neck region usually require pancreaticoduodenectomy or splenopancreatectomy.......
随着磷矿品质的下降,对磷酸生产产生了很大的影响,给生产调节控制带来困难。云南云天化股份有限公司云峰分公司通过技改,调整工艺......
目的观察AMACR/P504S在正常胃黏膜、不确定性异型增生、低度异型增生、高度异型增生和胃肠型腺癌中的表达,探讨其在胃黏膜高度异型......
针对氧化焙烧法处理低品位钼精矿中存在的钼氧化不完全、铼难挥发分离、有价元素(钼和铼)回收率较低等问题,采用焙烧试验、热重、......
设计并合成4种N-羟乙基脂肪酸酰胺类捕收剂,分别为N-羟乙基亚油酸酰胺（ELOA）、N-羟乙基油酸酰胺（EOA）、N-羟乙基蓖麻油酸酰胺（EROA）、N-......
目的探讨影响以癫癎为首发症状的低级别星形细胞瘤癫癎预后的因素。方法回顾性分析以癫癎为首发症状的低级别星形细胞瘤病例，经手术......
目的探讨成人癫癇相关的幕上低级别胶质瘤术后癫癇复发的相关因素。方法回顾性分析经病理证实112例癫癇相关的幕上低级别胶质瘤成......
在研究福建省某钼矿厂难选低品位钼中矿性质基础之上，通过高效捕收剂、组合抑制剂的优化配伍，结合浮选与重选技术，实现了该钼矿物的高......
针对广西某低品位斑岩型铜钼矿开展了浮选试验研究.该铜钼矿中的硫化矿物具有复杂的交代嵌生关系,本研究采用铜钼硫混浮-混合精矿......
目前,学校体育教育的任务是：增强学生体质,提高身体素质和生活质量;培养学生终身体育的观念和习惯,为学生终身体育打下坚实的基础。......
关于建筑策划的研究与教学已有不少成果,但建筑策划环节植入低年级建筑设计课程的过程讨论尚相对缺乏。以内蒙古工业大学建筑学院......
