1.
Product Data Sheet
ETİ MADEN İŞLETMELERİ
Ground Ulexite
Na2O.2CaO. 5B2O3.16H2O
Ground Ulexite
CAS Number: 1319-33-1*
Particle Size: -45 or -75 micron
Packaging: 1 or 2 tons
(with or without pallet)
It is crystalized at triclinic system. Its hardness is
2.5 and the value of specific weight is 1.955. B2O3
content of product is 37,00 % ± 1,00. It dissolves in
water slowly and dissolves in HCl rapidly. Ulexite
occurs with colemanite generally at sedimentary
rocks where boron deposits available as an
evaporative mineral. It is widely available in Bigadiç
- Turkey.
Some Applications and Benefits
Heat and Sound Insulation
It is used in production of insulation material for houses and cars. It provides fire retarding
and preventative effect at cellulosic materials and heat resistant fabrics.
Chemical composition of glass wool has included nearly 5 % B2O3 in weight which is added to
raw material as ulexite or colemanite. Glass wool isn’t influenced by the temperature up to
250 oC and it is in an A class nonflammable materials. Glass wool has high sound absorption
capability so it is named ‘acoustic material’.
Glass and Ceramic Industries
It is used for decreasing melting point at production of glass and it is used for increasing
resistance to thermal shock and coefficient of thermal expansion. Also, it is used in ceramics
and enameled glaze formulations.
(*Pure Ulexite)
Eti Maden İşletmeleri Genel Müdürlüğü
Ayvalı Mah. Halil Sezai Erkut Cad. Afra Sok. No:1/A
06010 Etlik-Keçiören
ANKARA / TURKEY
For more information:
Development of Technology Department
www.etimaden.gov.tr
EYS FRM-ETİ-00 10 /20/1/2014-01
2.
Generally, glazes are classified according to their main ingredient. These are lead and nonlead
glazes. Most of glazes which have lead in their content have included 3-24 % colemanite in
order to exclude pyrite adding whereat colemanite contains CaO and B2O3.
Boron is used at glazes and frits for the following purposes:









It decreases melting, formation and liquating temperature as flux,
It increases wetting of base coating material and provides the generation of coating at low
temperatures,
It provides the consistent heat expansion of glaze with seramic,
It supports to start formation of glass at early stages,
It increases refractive index and brightness of glaze and it develops general appearance
positively,
It decreases viscosity and surface tension, so it helps the development of glaze,
It increases the mechanical stress and scratch resistance of coating,
It increases resistance to effects of the chemicals and water,
It provides a basing to participation of colorants.
Production of Boric Acid and Borax
Ulexite is used in the production of borax decahydrate, borax pentahydrate, anhydrous borax
and boric acid.
Chemical and Physical Properties
Ground, -45 or -75 micron, Grey-White colour.
Molecular Weight*
405.21 g/mol
870 oC
Melting Point*
*Pure Ulexite
Size Dimension:
-45 Micron
-75 Micron
+600
0.02 % max.
+250
0.02 % max.
+250
0.50 % max.
-75
90.00 % min
-75
87.00 ± 5 %
-45
80.00 ± 5 %
-45
75.00 ± 5 %
Eti Maden İşletmeleri Genel Müdürlüğü
Ayvalı Mah. Halil Sezai Erkut Cad. Afra Sok. No:1/A
06010 Etlik-Keçiören
ANKARA / TURKEY
For more information:
Development of Technology Department
www.etimaden.gov.tr
EYS FRM-ETİ-00 10 /20/1/2014-01
3.
Chemical Content:
B2O3
37.00 % ± 1,00
CaO
19.00 % max.
SiO2
4.00 % max.
SO4
0.25 % max.
As
40 ppm max.
Fe2O3
0.04 % max.
Al2O3
0.25 % max.
MgO
2.50 % max.
SrO
1.00 % max.
Na2O
3.50 % max.
Humidity
1.00 % max.
Bulk
Density
1.00 max. ton/m3
Solubility in Water
Temperature°C
Dissolved Ground Ulexite %*
2,3
17.40
5
18.04
10
20.61
15
23.58
20
24.78
25
26.67
30
27.92
35
29.31
40
32.25
*For Bigadiç Ulexite (-3 mm) solubility values.
Eti Maden İşletmeleri Genel Müdürlüğü
Ayvalı Mah. Halil Sezai Erkut Cad. Afra Sok. No:1/A
06010 Etlik-Keçiören
ANKARA / TURKEY
For more information:
Development of Technology Department
www.etimaden.gov.tr
EYS FRM-ETİ-00 10 /20/1/2014-01
4.
X-Ray Diffraction Analysis: (-75 micron)
TG/DTA ( -75 micron)
Eti Maden İşletmeleri Genel Müdürlüğü
Ayvalı Mah. Halil Sezai Erkut Cad. Afra Sok. No:1/A
06010 Etlik-Keçiören
ANKARA / TURKEY
For more information:
Development of Technology Department
www.etimaden.gov.tr
EYS FRM-ETİ-00 10 /20/1/2014-01
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Ground Ulexite - Eti Maden İşletmeleri