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Table 3 Carbon contents of the kish graphite after purification with HCl by using heating and microwave irradiation

From: Recovery and purification of kish graphite from steelmaking dust by using acid leaching with physical auxiliary methods

Auxiliary method

Temperature (°C)

Carbon content (wt%)

0.3 N HCl

1.0 N HCl

None

ambient

93.13

95.06

Heating

60

93.37

95.37

80

94.08

97.06

100

94.22

97.06

Microwave irradiation

40

90.65

96.15

60

91.49

96.54

80

94.84

96.50

  1. The L/S ratio and reaction time were 10 L kg−1 and 30 min, respectively
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Sustainable Environment Research

ISSN: 2468-2039

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