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  Coal

Coal_mine_Wyoming.jpeg

Sqe

Parameters

unit

 

From

To

Average

(1)

(2)

(3)

(4)

(5)

(6)

1.1

Flash point

0C

408

416

412.00

1.2

Resistivity

Wm x 106

3.48

3.97

3.73

1.3

Ash resistivity

Wm x 106

2.87

3.45

3.16

1.4

Real density

g/cm3    

1.59

1.74

1.67

 

 

 

 

 

 

1.6

Compression weight

g/cm3    

1.01

1.06

1.04

1.7

Natural angle

§é

36

41

38.50

1.8

Size

mm

 

 

 

 

 +15mm

 

0.48

5.57

3.03

 

 10-15mm

 

7.2

9.62

8.41

 

 5-10mm

 

15.42

24.06

19.74

 

 2.5-5mm

 

21.74

26.74

24.24

 

 -2.5mm

 

37.17

51.21

44.19

1.9

Grinding cefficiency

 

42.00

60.00

47.00

1.12

Gross calorie value

kcal/kg

 

 

> 4400

1.13

Ash (on dry basic) (Ak)

%

40.01

45.00

42.00

 

Ash (Alv)

%

35.21

41.40

40.00

1.14

Volatile matter on dry basic (Vk)

%

5.50

8.27

6.50

 

Volatile matter (Vlv)

 

4.84

7.61

5.95

1.15

Total moisture (Wtp)

%

5.00

12.00

8.00

 

Total moisture ( Wpt)

%

1.18

2.2

1.69

1.16

The chemical composition of coal

 

 

 

 

 

Clv       

%

45.77

47.4

46.59

 

Hlv         

%

1.78

2.08

1.93

 

Olv

%

2.4

2.85

2.63

 

Nlv      

%

0.61

0.93

0.77

 

Slv       

%

0.26

0.74

0.55

 

Sk

%

0.30

0.80

0.60

2

Oxide metal in ash

 

 

 

 

 

SiO2       

%

59.13

61.63

60.38

 

Al2O3    

%

26.36

26.79

26.58

 

Fe2O3   

%

4.45

5.09

4.77

 

TiO2      

%

0.63

0.71

0.67

 

CaO

%

0.28

0.67

0.48

 

MgO

%

0.88

0.98

0.93

 

K2O

%

3.6

4.5

4.05

 

Na2O      

%

0.25

0.38

0.32

 

P2O5     

%

0.12

0.16

0.14

 

SO3  

%

0.11

0.34

0.23

 

MnO

%

0.01

0.02

0.02

3

Metal in ash

ppm

 

 

 

 

As

 

26.12

43.66

34.89

 

Cd

 

0

0

0.00

 

Cr

 

21.68

44.69

33.19

 

Pb

 

0

0

0.00

 

Hg

 

1.45

6.46

3.96

 

Zn

 

45

64.04

54.52

 

Cu

 

74.01

76.4

75.21

4

Melting point of ash

 

 

 

 

 

T1 (to change of shape)

0C

1210

1260

1235.00

 

T4 (liquidize)

0C

1590

1600

1595.00

 
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