有 色 冶 金 专 业 英 语
（适用于冶金工程专业）
2009年9月Lesson 3  Ore  Dressing
Ore dressing   选矿
Concentrate  v. 富积，浓缩，集聚           
n. 精矿，浓缩物
Concentration  n. 集中，浓缩，浓度
  Acid concentration  酸浓度
Bulk     n. 正体，主体，团块
Gangue   n. 脉石，尾矿，矿脉中的夹杂物
Tailing    n. 尾矿
Severance   n. 分离，隔离，碎散
Beneficiation  n.  分选
Comminution  n.  粉碎
Run-of-mine   n.  原矿
Middling   n.  中矿
Liberation  n.  解离
Crush   n. v.  粉碎，碾碎，挤压
Grind   n. v.  研磨，磨细
Screen   n. v.  筛，筛分
Jigging   n.  跳选，跳汰选
Hand picking    手选
Luster   n.  光泽，光亮  v.  闪光，发光 
Specific gravity   比重
Magnetic permeability   磁导率
Inductive charging     感应电荷
Electrostatic separation   静电分离
Fracture   n.  断口，裂缝
Automatic sorting of radioactive natures 
    放射性自动选矿
Magnitude n.  大小，尺寸，量级，强度，等级
Magnetic separation   磁选
Magnetic field    磁场
Gravity concentration    重力选矿
Medium   n.  介质，媒介，中间物，培养基
Dilate   v.   （使）膨胀，扩张，扩大
  Dilated bed   松散床层
Dilation  n.  膨胀系数，传播，伸缩，蔓延
Lip   n.  凸出部分，唇部
Diverse  adj. 不同的，互异的，各种各样的
Table  n.  摇床，淘汰盘
Tabling   摇床选，淘汰选
Motion  n. 运动，输送，行程，机械装置，运动机构
Sink-float separation   重介质分选
Suspension   n.  悬浮物，悬浮液
Cone  n.  圆锥体，锥形漏斗，圆锥破碎机
Stir  n. v.  移动，摇动，搅拌
  Stirrer    n.  搅拌器，搅拌机
Rotary   adj.  旋转的，回转的，转动的
Circumference    n. 圆周，周边
Rotating motion   旋转装置，旋转设备
Floatation   n.  浮选
Pulp   n.  矿浆，浆料    v.  制浆，浆化
Sluice   n.  槽，排水道，水槽
Froth floatation  泡沫浮选
Hematite   n.   赤铁矿
Pyrolusite   n.   软锰矿
Diamond   n.    金刚石
Graphite  n.    石墨
          Ore dressing concerns with the technology of treatment of ores to concentrate their valuable constituents (minerals) into products (concentrate) of smaller bulk, and simultaneously to collect the worthless material (gangue) into discardable waste (tailing). The fundamental operations of ore-dressing processes are the breaking apart of the associated constituents of the ore by mechanical means (severance) and the separation of the severed components (beneficiation) into concentrate and tailing, using mechanical or physical methods which do not effect substantial chemical changes.1 
Severance. Comminution is a single, or multistage processes whereby ore is reduced from run-of-mine size to that size needed by the beneficiation processes. The process is intended to detailed control, a class of particles containing both mineral and gangue (middling particles) are also produced. The smaller the percentage of middling the greater the degree of liberation. Comminution is divided into crushing (down to 6-to 14-mush) and grinding (down to micron size). Crushing is usually done in three stages: coarse crushing from run-of-mine size to 4-6 in., or coarser; intermediate crushing down to about 1/2 in.; and fine crushing to 1/4 in. or less. Screen is a method of sizing whereby graded products are produced, the individual particles in each grade being of nearly the same size. In beneficiation, screening is practiced for two reasons: as and integral part of the separate on process, for example, in jigging, and to produce a feed of such size range as is compatibl
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