He also knows that big mining companies prefer mountains of low-grade ore to small, high-grade mines like his.
而且他也知道那些个大型矿产公司更喜欢那些低地势的矿山，而不是他那又小又高的。
With mining capacity continuous increase and with mine entering into deep mining stage, the grade of crude ore and the grindability of ore decrease that raise the cost of grinding.
随着矿山规模的不断扩大和进入深部开采，矿石的原矿品位和相对可磨度逐渐降低，磨矿成本随之升高。
From production practice of the mine, it is expounded that the decrease of dilution factor in mining is one of effective methods to improve the ore quality (grade) and economic benefits.
从生产实践出发，阐述了降低采矿贫化率是提高矿石质量(品位)，提高矿山经济效益的有效途径之一。
In this background, it is important to study the ore grade distribution and the mining method of donggou molybdenum mine are studied.
在此背景下对东沟钼矿矿石品位分布及采矿方法进行研究意义重大。
This thesis will discuss the extractable grade of low grade ore according the production state of Jintingling Mining CO, ltd.
就金亭岭矿业有限公司生产现状，对低品位矿石的可回收品位进行了探讨。
Cut-off grade method has been used to control the ore drawing in non-pillar sublevel caving mining both in and outside China.
采用无底柱分段崩落采矿法，国内外一直采用截止品位放矿法来控制出矿。
The ore structure of Daling Mine is complex in Jilin Nickel Industry Corporation, it is typical low grade difficulty mining deposit.
吉林镍业公司大岭矿矿岩结构复杂，为典型的低品位难采矿床。
Venezuela, Venezuela's Mining Group is the only iron ore producer, the high-grade iron ore in Brazil compared with fewer impurities, in 2009 iron ore production capacity of 23 million tons.
委内瑞拉矿业集团公司是委内瑞拉唯一的铁矿生产企业，该铁矿较巴西矿品位高杂质少，2009年铁矿生产能力为2300万吨。
The deposit is characterized by shallow burial and high grade, with simple ore type amenable to mining and ore dressing.
矿床具有埋藏浅、品位富、矿石类型简单、易采、易选等特点。
The grade of raw ore is a very important technical and economical index for mining enterprises.
前言：原矿品位是矿山生产中非常重要的技术经济指标。
The grade of raw ore is a very important technical and economical index for mining enterprises.
原矿品位是矿山生产中非常重要的技术经济指标。
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。
In this paper the mining practice of extra high grade ore is introduced.
本文主要介绍特富矿的采矿实践。
The ore-body block model is not only widely used in ore grade and reserve calculation, but used in the optimization of the final mining boundary and mining plan in the open pit.
矿体块状模型广泛应用于品位、储量计算，也可用于露天矿最终开采境界优化和开采计划优化。
Research shows that main cause of ore dilution in sublevel caving mining is tlnrational cut-off grade drawing. Non-dilution ore drawing is most ideal drawing mede.
研究表明，造成无底柱分段崩落法来出矿石贫比大的根本原因在于采用了不合理的截止品位放矿方式，无贫化放矿是无底柱分段崩落法最为理想的放矿方式。
Research shows that main cause of ore dilution in sublevel caving mining is tlnrational cut-off grade drawing. Non-dilution ore drawing is most ideal drawing mede.
研究表明，造成无底柱分段崩落法来出矿石贫比大的根本原因在于采用了不合理的截止品位放矿方式，无贫化放矿是无底柱分段崩落法最为理想的放矿方式。
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