ATox VRM Calculations

F.L. Smid idth th S.

Description

Symbol

Unit

-

-

o. 1

Mill Type

1

Mill Number

Mn

-

2

Grinding Pressure

GP

bars

3

Raw material

-

-

4

Density of Material

RM

g!m3

"

Density of Material under Roller

RMR

#surplus

$

%oeffi&ient of 'ri&tion

%o'

-

(

Power )nput to Motor

Pm

*

+

Produ&tion Rate

PR

tp,



Table Diameter

Dtb

mts

1.

Roller Diameter

Dr

mts

11

Roller * idt,

*r

mts

12

Mean Diameter of Tra&

Dt

mts

13

Table /peed

N

rpm

14

0elo&ity of Tra&

0t

m!s

1"

Radiation /urfa&e rea

r  

m2

1$

Roller Pressure per Roller

Pr

N

1(

/pe&ifi& Roller Pressure

Ps

N!m2

1+

Gripping ngle

a

radian

1

Maimum Material Pressure

MMP

N!m2

2.

Material ed T,i&ness

T

mm

21

Maimum 'eed /ie

'm

mm

22

Dam Ring 5eig,t

DR5

mm

23

%ompa&tion Ratio

%R

-

24

Power !67er-Rolling of Material

Po

* ,!t

2"

Grinding %ir&ulation

n

2$

Gr Grindability8 design

Gn

times *, n!t

2(

Grindability8 gross

Gg

*, g!t

2+

Material Retention Time

t

se&

2

Design Power %onsumption

Pd

*

's ATOX Vertical Roller Mill Relationship

!"ample

#np$t % &or Ra Mill and ( &or )oal Mill

1

*+, *(.-, *-, *.-, /+, /(.-, /-, /.-, -+, -(.-, --, -.-, 0+

4.9.

#np$t 1al$e

1"1

#np$t 1al$e

:imestone

#np$t 1al$e

1"..

#np$t 1al$e

33

#np$t 1al$e

.91.

#np$t 1al$e

241(

#np$t 1al$e

411

Mn 2 %+

49..

+.0 3 Dtb

294.

+.( 3 Dtb

.9+.

+.4 3 Dtb

392

-0 2 Dtb+.-

2+9.

+.+-(*- 3 Dt5 3  (

49(

+.*%00 3 Mn

".(

Dr 3 6r 3 7s

1341

8 97 : /0.0 ; 2 +.(4*

$+

* 3 )oF

.93.

/ 3 7s 2 a

313

*+ 3 Dr 

(2

-+ 3 Dr 

12.

*0 3 Dtb

144

< 8 Dr 3 a ( 3 %+++ ; 2 8 / " T ; > : %

19("

2

.9324

7m 2 8 7R 3 7o ;

1+

7d 2 7R

49"

7m 2 7R

"9++

+.-

%- 3 Dtb

+.4// 3 )oF 3 7s 3 Dtb (.-

3. 1++$