The basic concept - lean ore resources of Qingzhou Guancheng company

贫矿，也称低品位矿，是相对于高品位的富矿而言的。什么样品位的矿才算是贫 矿，对此，世界各国并没有统一的划分标准。即使在同一个国家，同一个地区，也没 有绝对统一的贫矿的划分标准。实际上，一个国家贫、富矿品位标准的确定，主要取 决于矿产资源状况和采、选、冶技术水平。贫矿既是一个技术上的概念，又是一个经济上的概念。在技术上，贫矿指因矿石品位低，现行采、选、冶技术尚不太成熟，还 不能充分利用的矿产资源。在经济上，贫矿可以理解为因矿石品位低，导致开发利用 经济效益差的矿产资源。

Lean ore, also known as low grade ore, is relative to the high grade ore in terms of. What grade of ore is the lean ore, therefore, countries around the world and no unified standard. Even in the same country, the same area, also does not have the division standard of absolute unity of ore.. In fact, whether a country is poor, rich ore grade standard, mainly depends on the status of mineral resources and mining, selection, smelting technology level. The concept of lean is a technology, it is an economic concept. In the technology, lean ore of low grade ore, mining, smelting, the current selection technology is still not mature, also can not make full use of mineral resources. In economy, lean ore can be understood as due to the low grade ore, lead to the development and utilization of mineral resources and poor economic benefits.

什么样的经济效益算是经济效益差呢？这也是一个相对的经济学概念。所谓经济效益差，是指矿产资源开发利用后，矿山在经济上盈利能力较差，达不到行业基准收 益率，或者达不到商业银行的长期贷款利率。在目前，我国商业银行的５年期长期贷 款利率约为５－６%。也就是说，我们可以把开发利用后的盈利水平不高，盈利率一 般在６－８%及其以下的矿产资源视为贫矿。

What kind of economic benefit is poor economic benefits? This is a relative concept of economics. The so-called economic benefit, is refers to the development and utilization of mineral resources, mining poor profitability in the economy, not reach the industry benchmark interest rate, or not up to commercial bank's long-term lending rates. At present, our country commercial bank 5 year long loan interest rates of about 56%. That is to say, we can put the development and utilization of the profit level is not high, the profit rate in 6-8% of its mineral resources and the following as lean ore.