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Gypsum
PLEASE BE INFORMED THAT WE HAVE THE FOLLOWING:
- CALCINIED GYPSUM EITHER BULK OR PACKED IN 50 KG BAGS.
- RAW GYPSUM IN BULK IN SIZE 1 — 7 CM 90% MIN.
THE DIFFERENCE IN PRICE IS LARGE.
Gypsum is a very soft mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO4·2H2O. [3] It is found in alabaster, a decorative stone used in Ancient Egypt. It is the second softest mineral on the Mohs Hardness Scale.
Uses of gypsum
Gypsum is used in a wide variety of applications:
- Gypsum Board primarily used as a finish for walls and ceilings; known in construction as drywall.
- Plaster ingredient.
- Fertilizer and soil conditioner. In the late 18th and early 19th century, Nova Scotia gypsum, often referred to as plaster, was a highly sought fertilizer for wheat fields in the United States. It is also used in ameliorating sodic soils.
- A binder in fast-dry tennis court clay.
- Plaster of Paris (surgical splints; casting moulds; modeling).
- A wood substitute in the ancient world; for example, when wood became scarce due to deforestation on Bronze Age Crete gypsum was employed in building construction at locations where wood was previously used.
- A tofu (soy bean curd) coagulant, making it ultimately a major source of dietary calcium,especially in Asian cultures which traditionally use few dairy products.
- Adding hardness to water used for homebrewing.
- A component of Portland cement used to prevent flash setting of concrete.
- Soil/water potential monitoring (soil moisture tension).
- A common ingredient in making mead.
- In the medieval period it was mixed, by scribesand illuminators, with lead carbonate (powdered white lead) to make gessowhich was applied to illuminated letters and gilded with gold in illuminated manuscripts.
- In foot creams, shampoos and many other hair products.
- A medicinal agent in traditional Chinese medicine called Shi Gao.
- Impression plasters in dentistry
WE CAN SUPPLY GYPSUM AS PER THE FOLLOWING SPECIFICATIONS
| Initial setting time |
8: 15 minutes |
| Degree of whiteness |
96 min. |
| Fineness, Retained On sieve 0.15 mm (100 mesh) |
6%: 10% |
| Green, bending strength "after 24 hours” |
30 Kg/cm2, min. |
| Dry, bending strength "after one week” |
55 Kg/cm2, min. |
- Chemical Specifications:
| Constituents |
Typical PCT |
| Crystal water |
5: 7 |
| Hemi-hydrate " Caso4. ½ H20” |
94.00 min. |
| Insoluble Residue |
1.00 max. |
| Fe2O3 |
0.07 max. |
| Cl |
0.015 max. |
| CaO |
37: 38 |
| So3 |
52: 54 |
| Moisture |
0.00 |
Packing: in 33 Kg. paper bags as the standard product, and/or according to the customer requirements.
ALSO WE HAVE GYPSUM AS ROCK, AND THIS WILL BE IN BULK.
PLEASE INFORM ME WHAT YOU ARE LOOKING FOR, QUANTITY, DESTINATION PORT, DISCHARGING RATE IN ORDER TO OFFER TO YOU.
EMAIL REQUEST TO: .
