M4 - Non-metals, Pulp and Paper

Question 1

pulp mills

Answer 1

separate fibers of wood from other materials

Question 2

paper mills

Answer 2

manufactures wood pulp into paper

Question 3

how many properties of pulp?

Answer 3

13

Question 4

ash content

Answer 4

residues from chemicals

Question 5

Brightness of Pulp

Answer 5

paper brightness

Question 6

coarseness of pulp

Answer 6

average weight of fiber per unit length

Question 7

dirt content

Answer 7

suitability to make fine paper

Question 8

dry content of pulp

Answer 8

describe SOLID CONTENT

Question 9

Moisture Content of Market Pulp

Answer 9

Important for storage, transportation and handling point of view

Question 10

extractive

Answer 10

pulp strength

Question 11

Fiber Diameter

Answer 11

flexibility

Question 12

Fiber Length of Pulp

Answer 12

Pulp strength

Question 13

Fiber Strength

Answer 13

maximum strength obtainable from a given pulp

Question 14

Fines Content

Answer 14

significantly impacts filtering or drainage operations

Question 15

Hemicelluloses in Pulp

Answer 15

Indicator of chemical differences originating with the tree

Question 16

Kappa Number of Pulp

Answer 16

hardness and bleach ability

Question 17

pulp & paper production processes (12)

Answer 17

timber preparation
de-barking
chipping
chemical pulping
mechanical pulping
hydrapulping
blend chest
Waste paper collection
de-inking
refining
screening and cleaning
paper making

Question 18

timber preparation

Answer 18

Timber used for papermaking comes from well managed forests

Question 19

de-barking

Answer 19

Removal of bark from the logs, manually or mechanically

Question 20

chipping

Answer 20

Cutting of timber into small pieces

Question 21

chemical pulping

Answer 21

Wood chips are then “cooked” to remove lignin

Question 22

mechanical pulping

Answer 22

Production of fiber by forcing the logs and hot water between rotating steel disc that will tear the wood apart

Question 23

hydrapulping

Answer 23

Wood fibers are brought into circular tank with water which will break the fiber into small pieces

Question 24

Blend Chest

Answer 24

Adding of chemicals to obtain the desired characteristics

Question 25

Waste Paper Collection

Answer 25

Waste paper is used as raw material again

Question 26

de-inking

Answer 26

Removal of ink before recycling

Question 27

Refining

Answer 27

Cellulose fibers pass through a refining process which is vital in the art of papermaking

Question 28

Screening and Cleaning

Answer 28

Removal of undesirable materials using rotating screens and cleaners

Question 29

paper making

Answer 29

Paper is drained to make paper web