Unit 1 The History of Papermaking 1
Unit 2 Raw Materials 6
2.1 Main Components 7
2.2 Other Components 8
Unit 3 Mechanical Pulping 11
Unit 4 Alkaline Pulping 15
Unit 5 Sulfite Pulping 19
Unit 6 Recovered Paper Pulping 22
6.1 Definition of Recovered Paper 22
6.2 Sources and Types of Recovered Paper 22
6.3 The Main Steps of Recycling and Deinking Technology 23
Unit 7 Chemical Recovery 29
Unit 8 Washing 32
8.1 Modeling of Basic Washing Mechanisms 33
8.2 Brownstock Washers 36
Unit 9 Screening 39
Unit 10 Centrifugal Cleaning 45
10.1 Structure and Operation 45
10.2 Main Performance Parameter 47
Unit 11 Thickening 49
Unit 12 Bleaching 52
12.1 The Purpose of Bleaching 52
12.2 The Bleaching of Different Kinds of Pulps 53
12.3 The Sequence of Bleaching 56
12.4 The Effect of Bleaching and How to Test the Effect of Bleaching 58
Unit 13 Beating or Refining 62
13.1 Targets of Refining 62
13.2 The Effect of Refining on Fiber Characteristics 63
13.3 Refiners 64
Unit 14 Internal Sizing 68
14.1 Definition of Internal Sizing 68
14.2 Internal Sizing Agents 68
Unit 15 Fillers 74
15.1 Kaolin/Clay 75
15.2 Calcium Carbonate 77
15.3 Titanium Dioxide 79
15.4 Talc 80
Unit 16 Headboxes 83
16.1 Air-cushion Headboxes 83
16.2 Hydraulic Headboxes 85
16.3 Multilayer Headboxes 87
16.4 High-concentration Headboxes 88
Unit 17 Wire Section 91
17.1 Fourdrinier Forming 92
17.2 Twin-wire Forming 95
17.3 Separate/Simultaneous Forming 98
Unit 18 Press Section 100
18.1 Four Phases in the Pressing Process 101
18.2 Types of Presses 101
Unit 19 Dryer Section 105
19.1 Drying Methods 106
19.2 Multicylinder Drying 107
Unit 20 Calendering 110
20.1 The Aims of Calendering 110
20.2 Types of Machine Calenders 111
Unit 21 Reeling and Winding 114
21.1 Reeling 114
21.2 Winding 115
课文译文 120
第一单元 造纸的历史 120
第二单元 原料 123
第三单元 机械法制浆 126
第四单元 碱法制浆 128
第五单元 亚硫酸盐法制浆 131
第六单元 回收纸制浆 133
第七单元 化学品回收 137
第八单元 洗涤 139
第九单元 筛选 142
第十单元 离心式净化 145
第十一单元 浓缩 147
第十二单元 漂白 149
第十三单元 打浆或磨浆 155
第十四单元 内部施胶 158
第十五单元 填料 161
第十六单元 流浆箱 166
第十七单元 网部 169
第十八单元 压榨部 174
第十九单元 干燥部 177
第二十单元 压光 180
第二十一单元 卷取和复卷 182
附录 总词汇表 185
参考文献 205