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INGREDIENTS OF DOLOMITE
Formula: CaMg(CO3)2
Name: Dolomite – natural calcium and magnesium carbonate. Is the name of a carbonate sedimentary rock and a mineral. This mineral is named in honor of D. Dolomieu (1750 – 1801) – a French mineralogist and chemist, who discovered a new mineral during an expedition to the Alps. Lava containing up to 95% dolomite is also called Dolomite.
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Estimated composition/content |
||
|
CaO |
30.00% |
(Min) |
|
MgO |
20.00% |
(Min) |
|
Fe2O3 |
0.05% |
(Max) |
|
SiO2 |
0.19% |
(Max) |
|
Al2O3 |
0.05% |
(Max) |
|
LOI |
47.20% |
(Max) |
KEY CHARACTERISTICS OF DOLOMITE
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Item name |
Characteristics |
Content |
|
Dolomite |
Density |
2.8-3.0g/cm³ |
|
Hardness |
3.5-4 |
|
|
Durability |
Brittle |
|
|
Usually crystalline |
Solid crystal, often with curved faces, can be columnar, stalactite, granular, massive |
|
|
Color |
white, gray, pink sometimes yellow, light brown, light green. |
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|
|
Other Features |
Can fluoresce white to pink under ultraviolet light; luminescence due to friction. |
DOLOMITE APPLICATIONS
1) Manufacture of refractory bricks
2) In ferrous metallurgy, steelmaking
Use dolomite as flux aid, slag disintegration as well as magnesium sintering ore processing.
3) Production of metallic magnesium
4) Production of adhesives
5) Production of insulation material
6) Dolomite is used to build industry, houses, roads
Used in the form of crushed stone, crushed stone, boulder. Dolomite chips are used as fillers for concrete and for laying railway floors.
7) Glass industry
In the glass-melting mix, dolomite accounts for 10-20%
8) Production of abrasive powder
From live dolomite and sintered dolomite, people make powder to polish glass, polish metal, mother-of-pearl. To make grinding powder, dolomite requires purity, not containing more than 2% of insoluble residues.
9) In chemical and pharmaceutical industry
Requires dolomite to be very clean, containing a lot of MgO, less clay and other impurities.
10) In the fertilizer industry
Use dolomite as a non-stick agent for fertilizers made from ammonium nitrite (NH4, NO3).
Dolomite powder has the effect of making rubber more solid and accelerating the vulcanization process.
12) In the cellulose paper industry, in the leather industry, in the production of ceramics, in lacquers
Use dolomite in the form of live powder or sintered. The ceramic industry uses clean dolomite to make a mixture of porcelain glazes to make the glaze more even and iridescent.
13) Use of dolomite in agriculture
Together with limestone, dolomite is used to produce dry sulfur lime, which kills poisonous fungi and insects, and neutralizes acidity in the soil.
14) Using dolomite in environmental treatment
Dolomite and especially products processed from it are products that are widely used in the world for the following purposes: domestic water purification, water environment improvement for aquaculture or cultivation purposes. specific plants, color treatment for some types of wastewaters, treatment of acidic gases.
