Gypsum Rock

Gypsum Rock

Gypsum is the common name for the mineral calcium sulfate, which has a chemical formula CaSO4.

Gypsum bonds easily with water and is usually found in its natural state as hydrated calcium sulfate, with a chemical formula of CaSO4.2H20.

Gypsum is a soft mineral that usually appears white or gray and is composed of translucent crystals. It is widely mined and is used as a fertilizer and as the main constituent in many forms of plaster, blackboard/sidewalk chalk, and drywall.

Gypsum (CaSO4.2H2O) is very similar to Anhydrite (CaSO4). The chemical difference is that gypsum contains two waters. Gypsum is composed of calcium sulphate (CaSO4) and water (H2O). Its chemical name is calcium sulphate dehydrate (CaSO4.2H2O) and anhydrite is without water. Gypsum is the most common sulfate mineral.

Advantages

  • Product quality since 2000
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  • Adjustable particle size
  • Deliver globally
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  • Directly from Mine to end-user

Test Methods : ASTMC-471

pH of 10% Aqueous solution

-

7.76

Parameters

Test Method

Results in %

Free Moisture @ 45o C

Gravimetry

0.01

Combined Water @ 250o C

Gravimetry

19.75

Insoluble Residue

Gravimetry

0.89

Silica as SiO2

Gravimetry

0.32

Alumina as Al2O3

Gravimetry

0.27

Iron as Fe2O3

Gravimetry

0.05

Calcium Oxide as CaI

Titrimetry

32.41

Magnesium Oxide as MgO

Titrimetry

0.2

Sulphur Tri Oxide as SO3

Gravimetry

45.73

Alkalies (Na2O+ K2O)

Flame Photometry

0.04

Chlorides as NaCl

Titrimetry

0.017

Calculated Results

Gypsum Purity as CaSO4.2H2O

-

94.37

Anhydrite ( CaSO4)

-

3.14

Insoluble Residue + Silica ( IR + SiO2)

-

0.89

R2O3 Group ( Al2O3 + Fe2O3)

-

0.32

Calcium Carbonate as CaCO3

-

0.68

Magnesium Carbonate as MgCO3

-

0.42

Chlorides as NaCl

-

0.017

SUM

99.84

 

Usage of Samim Gypsum

  • White and grey Cement
  • Agriculture Gypsum
  • Gypsum Boards and celling boards
  • Plaster of Paris

Side Product usage

  • Clinker
  • Cement Industry
  • Lime Industry
  • Alabaster