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Table 1 Element content of undissolved residue (ppm = mg kg− 1 aluminum dross)

From: Recycling of aluminum dross for producing calcinated alumina by microwave plasma

Element

Content (ppm)

The element of SAD

weight ratio (%)

Al

342,600

55.0

Si

1210

15.8

Fe

22,900

29.2

Mg

65,800

78.6

Ca

9800

77.5

Cu

6600

77.1

Na

10,000

32

Ni

513

6.5

Cr

9610

42.2

Pb

261

68.4

Cd

65.4

138

Hg

N.D.

0.0

Ba

426

82.5

As

2390

45.6

Se

20.9

118.8