废矿石

Of burned coal, ettle, ore tailings or other industrial solid waste shall build special installations and sites for the purpose.

第三十三条露天贮存冶炼渣、化工渣、燃煤灰渣、废矿石、尾矿和其他工业固体废物的，应当设置专用的贮存设施、场所。

Article 33 Whoever stores in open air metallurgical slag, residue of chemical industry, cinder of burned coal, ettle, ore ''.

第三十三条露天贮存冶炼渣、化工渣、燃煤灰渣、废矿石、尾矿和其他工业固体废物的，应当设置专用的贮存设施、场所。

Article 33 Whoever stores in open air metallurgical slag, residue of chemical industry, cinder of burned coal, ettle, ore tailings or other industrial solid waste shall build special installations and sites for the purpose.

第三十三条露天贮存冶炼渣、化工渣、燃煤灰渣、废矿石、尾矿和其他工业固体废物的，应当设置专用的贮存设施、场所。

Firstly, the stope vacancy was monitored using CMS, taking cavity measured data as foundation, cavity three-dimensional model of the stope opening was created using Surpac software and gain the stope three-dimensional configuration and the actual boundary accurately. Then, the stope designed model and ore-rock interface digital terrain model were established according to the stope design material. Finally, using ore-rock interface DTM to cut cavity model or through Boolean calculation among the models, ore remains, mining total volume, mullock, backfilling, pure ore and dilution rate of stope N3-4 were calculated accurately, thus the large-scale stope mining index visible calculation was realized effectively.

采用CMS探测三维采场空区，以空区实测数据为基础运用Surpac构建采空区三维可视化模型，获取采场空区的三维形态和实际边界；运用采场设计资料，建立采场回采设计模型及矿岩边界模型，通过模型间的布尔运算，计算出采场存留矿量、回采总体积、采下废石量、采下充填体量、采下纯矿石量、回采总量及回采贫化率等，从而有效地实现了大规模采场回采指标的可视化计算。

The mathematical relationships among mixed layer thickness, ore recovery and waste dilution against drawpoint spacing, volume per drawing, cut-off waste dilution and level interval are studied in details. It shows that the contact face between ore and waste as a ideal interface is incorrect during drawing.

以二次回归正交放矿计算机仿真实验为研究手段，以单一采场放矿为研究对象，详细地阐明了混杂层厚度、矿石回贫指标与漏斗间距、一份放出量、截止废石混入率及阶段高度之间的数学关系；研究指出：在放矿过程中，将崩落矿岩接触带视为一理想界面是不正确的。

For the first five months of this year, metalliferous ores and scrap metal was the UK's largest export to China, up 6% on the same period last year.

今年头5个月的数据显示，金属矿石和废金属在英国对中国出口产量中比重最大，较去年同期增长了6％。

Oe the basis that stockpiling low grade ore necessitates the expense of rehandling, process the low grade ore directly from the pit, thus freeing up potential storage volume for waste rock.

在储蓄低等级矿石成为直接从矿坑中直接处理，加工这些矿石的必要一节后，要尽可能的寻找跟占用空间来处理废石。有些意思是猜的。

Current plans are for an open pit with a strip ratio of 7 tonnes of waste for each tonne of ore.

目前计划进行露天开采，采剥比是7吨废石，一吨矿石。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。