Weight ratio (%)

ID

Preparation

After sieving on 500 µm

Oil/hematite

Talc/(oil + hematite)

Coating loss/(oil + talc)

0.2

2

0

A

5

40

B

10

64

C

15

72

D

0.5

2

3

E

5

2

F

10

33

G

15

48

H

20

70

S

1.0

2

0

I

5

8

J

10

15

K

15

36

L

20

59

T

2.0

2

6

M

5

5

N

10

9

O

15

19

P

20

32

Q

25

45

R