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Table 11 Typical analyses of KNR solids and electrolytes*

From: New views on the hypothesis of respiratory cancer risk from soluble nickel exposure; and reconsideration of this risk's historical sources in nickel refineries

 

Weighta

Product

Nickel

Cobalt

Copper

Iron

Arsenic before 1953

Arsenic after 1953

Sulphur

Matte as received

48

1.0

28

1.5

0.2

0.2

22

Cement copper slime

32

-

35

3.0

7.5

0.6

-

Cement copper

13

-

68

1.7

10.4

0.3

-

Herreshoff calcine

44

1.0

32

1.7

2.4d

0.2

0.7

Leached matteb

58

1.2

15

1.9

3.4d

0.3

0.9

Reduced matteb

71

1.3

19

1.5

4.0d

0.3

1.7

Nickel anodes

75

1.5

17

1.6

3.7d

0.3

1.1

Raw anode slime

30

0.8

27

4.5

3.0d

0.1

21

Roasted anode slime

36

0.9

30

5.0

2.0

0.1

1.1

Iron precipitate

1.2

-

1.2

39

0.4

4.0

-

Copper electrolyte

70

4.0

75

-

-

-

-

Nickel anolytec

68

0.2

2.3

0.4

0.4

0.03

-

Nickel catholytec

68

0.2

Tre

Tre

Tre

Tre

-

  1. * Revised from Table eight in ICNCM (1990) [3]. a Composition of copper electrolyte, nickel anolyte, and nickel catholyte in grams per liter. Composition of other products expressed as percentage by weight. b So named for convenience. Actually "leached matte" is "leached calcine" and "reduced matte" is "reduced leached calcine." c Nickel electrolyte contained 160 g of nickel sulphate per liter without any nickel chloride before 1953. After 1953, most of the nickel sulphate was replaced by 95 g of nickel chloride per liter, leaving only 45 g of nickel sulphate per liter. d Revised by P. Thornhill. e Tr = trace.
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Journal of Occupational Medicine and Toxicology

ISSN: 1745-6673