矿物加工专业英语课后题短语、单词.doc

PAERT1 短语 Unit1 lesson 1 天然无机化合物 natural inorganic substances 化学组成 chemical compositions 原子结构 atomic structure有色金属矿石 nonferrous ores 有用矿物 valuable minerals脉石矿物 gangue minerals 给矿品位 feed grades非金属矿石 non-metallic ores 沉积岩 sedimentary rocks 二氧化碳 carbon dioxide发电 power generation 露天采矿 open pit mining低灰分烟煤 low-ash bituminous coal 挥发分 volatile constituents煤气化 coal gasification直接液化 direct liquefaction 煤质分析 coal assay煤的化学性质 chemical properties of coal 相对密度 relative density 粒度分布 particle size distribution自磨 autonomous grinding 燃烧试验 combustion test灰分含量 ash content of coal高品级煤 high-rank coal 矿石粒度 the size of ores有用矿物颗粒 the grains of valuable minerals 低品位矿石 low-grade ores解离度 degree of liberation 光学性质 optical properties 磁性 magnetic property导电性 electrical conductivity properties 连生颗粒 locked particles最佳磨矿细度 optimum mesh of grind 破碎应力 the breaking stresses颗粒边界 mineral grain boundaries 再磨 regrind磨矿成本 grinding costs 粗粒脉石 the coarse gangue单体颗粒 single particles 颗粒层厚度 the thickness of the layer筛分效率 the efficiency of screening 难筛颗粒 near mesh particles 低品位复杂矿石 low-grade complex ores预选 pre-concentrate 脱水 dewatering矿物比重 specific gravity of the mineral 理想给料浓度 an optimum feed pulp-density 补偿水流 supplied water干涉沉降 hindered settling 起始加速度 the initial acceleration简谐运动 harmonic motion 颗粒的横向运动 a lateral displacement of the material流膜分选 flowing-film separation 给矿槽 the feed box冲刷水 wash water 径向振动 vibrate longitudinally垂直分层 vertical stratification 耐磨材料 hard wearing material矿砂摇床 sand tables UNIT TWO comminution (粉碎) L1 principles of comminution(粉碎原理) 1、minerals are intimately associated with the gangue. 矿石中有用矿物与脉石紧密共生。 2、crushing is usually a dry process,and is performed in several stages. 破碎一般为干式作业，采用分段方法完成。 3、in the crystalline lattice of minerals,these inter-atomic bonds are effective only 在矿物晶体的晶格内，原子键间只在很短的距离才有效。 4、newly formed surfaces are often more chemically active. 新生成的表面通常具有更高的化学活性。 5、the energy required for comminution is reduced 有水存在的情况下，粉碎所需的能量减少。 L3