Some Opportunities to reduce the Iron-Oxide Contaminants in Raw Materials of Glasses using Permanent Magnets Csilla, Paróczai, Dr. László A., Gömze [email protected]

Some Opportunities to reduce the Some Opportunities to reduce the Iron-Oxide Contaminants in Raw Iron-Oxide Contaminants in Raw

Materials of Glasses using Materials of Glasses using Permanent MagnetsPermanent Magnets

Csilla, Paróczai, Dr. László A., Gömze

[email protected]

University of MiskolcDepartment of Ceramics and Silicate Engineering

MicroCAD , Miskolc, 16-17. March 2006MicroCAD , Miskolc, 16-17. March 2006

Abstract

MicroCAD, Miskolc 16-17. March 2006.MicroCAD, Miskolc 16-17. March 2006.Csilla, Paróczai - Dr. László A., GömzeCsilla, Paróczai - Dr. László A., Gömze

The art of state is to show the efficiency of the magnetic

cleaning of mineral raw materials of glasses. We used

the model CMT 5 magnetic trap, in which there are five

magnetic tubes. We cleaned all types of mineral with this

magnetic trap ten times. After the cleaning we examined

the compound of materials, which stick on the magnets.

These materials mainly contain metal-oxides, especially

iron and titan-oxides. In this article the results of these

research and examination are showed.

Eriez CMT 5 magnetic trap


Investigated raw-materials

Raw-materials %

Quartz sand 54,89

Soda 19,79

Dolomite 13,97

Natrium-sulphate 0,48

Limestone 5,30

Feldspar 3,32

Coke 0,039

Water 2,21

Investihated raw-materials:

Quartz sandDolomiteLimestoneFeldspar


The testThe testto leach 2kg raw-materials,

10 timesThe polluted paper


The quartz sandThe quartz sand


The dolomite I.The dolomite I.Cleaning with magnet – to compare the different fraction


Cleaning with magnet – to compare the different fraction - to allow for screening

The dolomite II.The dolomite II.


The limestone I.The limestone I.

0

5

10

15

20

25

30

35

1 2 3 4 5 6 7 8 9 10

A tisztítások száma

A m

ágne

sen

mar

adt s

zenn

yező

k

men

nyis

ége

[10-3

%]

keverék

> 0,5 mm

0,25-0,5 mm

0,1-0,25 mm

< 0,1 mm

Cleaning with magnet – to compare the different fraction


The limestone II.The limestone II.Cleaning with magnet – to compare the different fraction - to allow for screening


The feldspar I.The feldspar I.

0

20

40

60

80

100

120

140

1 2 3 4 5 6 7 8 9 10

Number of cleaning

Am

ount

of

separa

ted c

onta

min

ants

[10-3

m%

]

keverék

> 0,5 mm

0,25-0,5 mm

0,1-0,25 mm

< 0,1 mm

Cleaning with magnet – to compare the different fraction


Cleaning with magnet – to compare the different fraction - to allow for screening

The feldspar II.The feldspar II.


To compare the different To compare the different raw-materials I.raw-materials I.

0

5

10

15

20

25

30

35

40

45

1 2 3 4 5 6 7 8 9 10

Number of cleaning

Am

ou

nt

of

sep

arat

ed c

on

tam

inan

ts

[10-3

m%

] mészkő

földpát

dolomit

kvarchomok


To allow for the compound of mixture

0

100

200

300

400

500

1 2 3 4 5 6 7 8 9 10

Number of cleaning

Am

ount

of

sepa

rate

d co

ntam

inan

ts

[10-3

m%

]

mészkő

földpát

dolomit

kvarchomokdd

To compare the different To compare the different raw-materials II.raw-materials II.


0

100

200

300

400

500

600

700

1 2 3 4 5 6 7 8 9 10

Number of cleaning

Am

ou

nt

of

sep

ara

ted

co

nta

min

an

ts

[10-3

m%

]

kvarchomok

dolomit+földpát

dolomit+földpát+mészkő

To compare the different To compare the different raw-materials III.raw-materials III.

To allow for the compound of mixture


The reason why we analyzed the separated pollutant

The pollutant usually The pollutant usually

appears in three mode:appears in three mode:

- - privateprivate grain grain

- - in the quartz grainin the quartz grain

- - surfacesurface of the of the

quartz quartz graingrain


The separated pollutant


The compound and morphology

of the separated pollutant I.

W% At% W% At% W% At%

Magnesium 11,06 14,35 Magnesium 0,30 0,61 Magnesium 1,81 3,84

Aluminium 9,58 11,20 Aluminium 1,00 1,84 Aluminium 0,34 0,71

Silicon 36,37 40,87 Silicon 2,80 4,92 Silicon 0,00 0,00

Sulphur 2,61 2,57 Sulphur 0,14 0,22 Sulphur 0,18 0,29

Potassium 1,53 1,24 Potassium 0,28 0,36 Potassium 0,24 0,32

Calcium 34,13 26,88 Calcium 0,52 0,64 Calcium 0,29 0,38

Titanium 2,18 1,43 Titanium 49,60 51,22 Titanium 30,06 32,42

Manganese 1,07 0,62 Manganese 1,56 1,41 Manganese 0,96 0,90

Iron 1,48 0,84 Iron 43,97 38,78 Iron 66,09 61,14

Sum 100 100 Sum 100 100 Sum 100 100MicroCAD, Miskolc 16-17. March 2006.MicroCAD, Miskolc 16-17. March 2006.Csilla, Paróczai - Dr. László A., GömzeCsilla, Paróczai - Dr. László A., Gömze

W% At% W% At%

Aluminium 0,68 1,33 Silicon 2,00 3,90

Silicon 4,09 7,65 Iron 98,00 96,10

Sulphur 0,32 0,52 Sum 100 100

Potassium 0,28 0,37

Calcium 0,45 0,59

Titanium 0,41 0,45

Chrome 17,70 17,89

Manganese 2,83 2,71

Iron 1,48 0,84

Nickel 8,73 7,81

Sum 100 100


of the separated pollutant II.


W% At% W% At%

Magnesium 0,36 0,80 Magnesium 0,40 0,87

Aluminium 0,45 0,91 Aluminium 0,36 0,70

Silicon 1,05 2,04 Silicon 1,35 2,54

Potassium 0,00 0,00 Potassium 0,07 0,10

Calcium 1,30 1,77 Calcium 8,43 11,13

Chrome 0,00 0,00 Iron 89,40 84,67

Manganese 0,00 0,00 Sum 100 100

Iron 96,84 94,48

Sum 100 100


of the separated pollutant III.


SummarySummary When we compared the different raw-materials we got the following

order: the feldspar is the most polluted, the next is the limestone, then the dolomite and the least polluted is the quartz sand.

When we used up a known mixture of glass factory, we got: although the most contaminant get into the melt with the quartz sand, but if we add the contamination of dolomite and feldspar, the summation is beyond the contaminant of quartz sand.

We analyzed the magnetic separated materials, and we established that the used magnet able to detach the private contaminant and the other contaminant which are in the quartz grain or surface of the quartz grain.

The examined raw.materials in the most percentage contains iron, titanium és nickel and these oxide. We can reduce the amount of these undesirable materials with magnet, so we get a long sight better raw-materials.


Thank you for attention!

Csilla, ParóczaiPhD student

Témavezető: Dr. László A., Gömze

University of Miskolc

Department of Ceramic and Silicate Engineering

Documents

Some Opportunities to reduce the Iron-Oxide Contaminants in Raw Materials of Glasses using Permanent Magnets Csilla, Paróczai, Dr. László A., Gömze [email protected]