Gypsum is a soft sulfate mineral composed of calcium sulfate dihydrate, with the chemical formula CaSO4��2H2O.It is widely mined and is used as a fertilizer, and as the main constituent in many forms of plaster, blackboard chalk and wallboard. A massive fine-grained white or lightly tinted variety of gypsum, called alabaster, has been used for sculpture by many cultures including Ancient Egypt, Mesopotamia, Ancient Rome, Byzantine empire and the Nottingham alabasters of medieval England. It is the definition of a hardness of 2 on the Mohs scale of mineral hardness. It forms as an evaporite .mineral and as a hydration product of anhydrite.
Commercial quantities of gypsum are found in the cities of Araripina and Graja�� in Brazil; in Pakistan, Jamaica, Iran (world’s third largest producer), Thailand, Spain (the main producer in Europe), Germany, Italy, England, Ireland, Canada and the United States. Large open pit quarries are located in many places including Plaster City, California, USA, and East Kutai, Kalimantan, Indonesia. Several small mines also exist in places such as Kalannie in Western Australia, where gypsum is sold to private buyers for changing the pH levels of soil for agricultural purposes.
Uses of Gypsum
Gypsum is used in a wide variety of applications:
Gypsum board is primarily used as a finish for walls and ceilings, and is known in construction as drywall, wallboard, sheetrock or plasterboard.
Gypsum blocks are used like concrete blocks in building construction.
Gypsum mortar is an ancient mortar used in building construction.
Plaster ingredients are used in surgical splints, casting moulds and modeling.
Fertilizer and soil conditioner: In the late 18th and early 19th centuries, 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 high-sodium soils.
A binder in fast-dry tennis court clay
As alabaster, a material for sculpture, it was used especially in the ancient world before steel was developed, when its relative softness made it much easier to carve.
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 brewing
Used in baking as a dough conditioner, reducing stickiness, and as a baked-goods source of dietary calcium
A component of Portland cement used to prevent flash setting of concrete
Soil/water potential monitoring (soil moisture)
A common ingredient in making mead
In the medieval period, scribes and illuminators mixed it with lead carbonate (powdered white lead) to make gesso, which 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
Used in mushroom cultivation to stop grains from clumping together
Test have shown that gypsum can be used to remove pollutants such as lead from contaminated waters.
Gypsum Micro Powder Grinding has been widely used in making fine powder or micro powder, which is applicable to non-flammable and non-explosive materials with hardness less than 6, such as the calcite, chalk, limestone, dolomite, kaolin, bentonite, talcum, talc, diatomite, barite, gypsum, alum earth, graphite, fluorite, etc.
Gypsum Micro Powder Grinding Suppliers
The HC Series Mill, HLMX Ultra-fine Vertical Mill, HLM Vertical Mill, HCH Ultra-fine Mill and Special Material Grinding Mills (including coal mills, bentonite mills, ultra-fine titanium dioxide mills, etc) are famous products and best sellers.
Office Add: Yangtang Shanshui Industrial Park, Xicheng Economic Development Zone, Guilin City, Guangxi Province, China
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