low-grade ore
英 [ləʊ ɡreɪd ɔː(r)]
美 [loʊ ɡreɪd ɔːr]
网络 贫矿石; 低品位矿石; 低级矿
双语例句
- Study on Coal-based Direct Reduction of Low-grade Iron Ore with Rotary Kiln
低品位铁矿石煤基回转窑直接还原研究 - Although much of the high-grade ore has been used, there remains enough low-grade ore to last for centuries.
品位高的富铁矿已经开采很多，品位低的铁矿还够开采若干个世纪。 - Mineral processing technology study on a low-grade iron ore in Hebei
河北某低品位铁矿选矿工艺流程研究 - Process Mineralogy and Gravity Concentration on an Anshan-type Low-grade Hematite Ore
一种鞍山式贫赤铁矿矿石的工艺矿物学和重选分离研究 - But they sold high-grade resources to big investors and stopped prospecting, leaving low-grade gold ore unused.
他们常常把高品位的资源卖给大投资商，却置低品位的金矿石而不顾，让它荒弃掉。 - Experimental study on a low-grade copper-molybdenum ore in Anhui
安徽某低品位铜钼矿石的选矿试验研究 - Utilization of low-grade ore discussed from geological-economical viewpoint
从地质经济学角度探讨低品位矿石的利用 - Experimental Study on the Flotation of a Low-Grade Nickel-Copper Ore
某含铜低品位镍矿石的浮选试验研究 - In a recent international mining forum in beijing, Chen fumin, chairman of the China Gold association, said the nation will encourage foreign companies to invest more in low-grade gold ore exploitation.
最近在北京召开的国际矿业论坛会上，中国黄金协会主席成辅民说，中国鼓励外国公司多投资于低品位金矿的开发利用。 - A strain of Acidithiobacillus thiooxidans ( Att t) isolated from a sulfur-containing hot spring in Guangxi was used to leach low-grade phosphate ore after being purified and cultivated.
从广西某含硫温泉中分离得到了嗜酸氧化硫硫杆菌菌株，经分离纯化与初步培养后进行浸出低品位磷矿实验。 - Se is a kind of scarce and scatter element, and it is very low-grade ore in mineral.
硒是一种稀少而又分散的元素，矿石中其品位一般都很低。 - Anshan-type low-grade hematite ore; Classification; Gravity concentration; Magnetic separation; Reverse flotation; Steel ball system of grinding;
鞍山式贫赤铁矿石；分级；重选；磁选；反浮选；磨矿钢球制度； - Development& practical use of technology of low-grade iron ore resource utilization
低品位铁矿资源利用技术的发展与实践 - Shanxi Province is rich in the resources of beauxite. But because 80% of it is low-grade ore, its production cost is high, being short of competitive power in the market.
山西省铝土矿资源十分丰富，但由于80%以上为贫矿，故生产成本高，缺乏竞争力。 - The categories of the bacteria and its leaching mechanism are key factors for the bioleaching of low-grade ore.
微生物种类及其作用机理是浸出低品位矿石的关键所在。 - Recovery of Wolfram from Low-grade Ore in Stringer Vein
用浮选工艺回收低品位细脉型黑白钨矿的试验研究 - Using methods of cost-benefit comparision, marginal analysis, sinking cost analysis and opportunity cost, and combining the long-term average trend of mineral product price and production cost, a cut-off grade economical analysis model for the mine low-grade ore utilization is established.
综合地运用成本收益比较法、边际分析法、沉没成本分析法和机会成本法，结合矿产品价格和生产成本的长期平均趋势，建立了矿山低品位矿利用的临界品位的经济分析模型。 - In Zijinshan gold mine, the cut-off grade is determined to be 0.2g/t. Different dressing processes are carried out according to the characteristics of low-grade ore. As a result, the utilization rate of resources is enhanced and better economic benefit is obtained.
紫金山金矿把矿石的最低入选品位定为0.2g/t，根据低品位矿石特点采用不同的选矿工艺，既提高了资源利用率，又获得了较好的经济效益。 - A research on dressing process optimization of low-grade ore in Zijinshan gold mine
紫金山金矿低品位矿石选矿工艺优化研究 - A new method of leaching Au from low-grade ore is reported in this paper.
本文研究了低品位金矿石的浸出方法。 - Test Study on Weak-acidic Medium Mineral Processing of Low-grade Ore in Jinchuan No.2 Mining Area
金川二矿区贫矿石弱酸性介质选矿工艺试验研究 - Heated by the late Mesozoic thermal event and covered by thermal insulation beds, the early low-grade ore bodies underwent an annealing static recrystallization, and became a high-grade superlarge lead-zinc ore deposit.
凡口矿区中生代晚期热事件的加热和保温层的覆盖，使得早期贫矿体经历退火静态重结晶作用，使贫矿体向内部收缩和圆化呈截然边界，总体演变成为高品位的超大型铅锌矿床。 - Gold extraction research by heap leaching from low-grade ore
低品位金矿堆浸法提金研究 - Study on the bioleaching mechanism of the low-grade ore
低品位矿石微生物浸出作用机理研究 - A few problems needing attention for the low-grade ore deposit to formulate commercial index
低品位金矿床制定工业指标过程中值得注意的问题 - In-situ leaching is an effective technology to recover low-grade ore, useless reserves, uneasilymining orebody and remainder ore.
原地浸出开采是回收低品位矿、表外矿、难采矿体及残矿的一种有效技术。 - With the depletion of mineral resources, the exploitation of low-grade ore and tailings is very important in mineral industry. Microorganisms have a good prospect of application in metallurgy, for they can be used to process low-grade ore and tailings and play a role in environmental protection.
随着可供采掘矿产资源的枯竭，科学开发和利用低品位、尾矿资源成为矿产工业进一步发展的关键，而利用微生物进行生物冶金不仅能处理低品位、尾矿而且环境友好，显示出良好的应用前景。 - Therefore choosing an economical recovery process for the low-grade ore is necessary.
因此，有必要开发一种经济的低品位硫化镍矿处理工艺。 - The resources of natural rutile in our country is primary low-grade ore, eclogite-type rutile deposit is characterized as large, thick ore body, easy to exploration and mining.
我国天然金红石资源绝大部分为低品位的原生矿石，榴辉岩型金红石床具有规模大，矿体厚，易于勘探和开采等特点。 - Bioleaching technology not only can deal with low-grade ore and refractory tailings effectively, but also can reduce the pollution of environment, and even some microorganisms in mining areas can remedy the polluted environment.
生物冶金技术不仅能有效地处理低品位矿石和难处理的尾矿，而且对环境友好，矿区微生物甚至能很好地用于矿山污染环境的修复。