MTW European Type Trapezium Mill
Input size:30-50mm
Capacity: 3-50t/h
LM Vertical Roller Mill
Input size:38-65mm
Capacity: 13-70t/h
Raymond Mill
Input size:20-30mm
Capacity: 0.8-9.5t/h
Sand powder vertical mill
Input size:30-55mm
Capacity: 30-900t/h
LUM series superfine vertical roller grinding mill
Input size:10-20mm
Capacity: 5-18t/h
MW Micro Powder Mill
Input size:≤20mm
Capacity: 0.5-12t/h
LM Vertical Slag Mill
Input size:38-65mm
Capacity: 7-100t/h
LM Vertical Coal Mill
Input size:≤50mm
Capacity: 5-100t/h
TGM Trapezium Mill
Input size:25-40mm
Capacity: 3-36t/h
MB5X Pendulum Roller Grinding Mill
Input size:25-55mm
Capacity: 4-100t/h
Straight-Through Centrifugal Mill
Input size:30-40mm
Capacity: 15-45t/h
Gypsum Encyclopedia
Gypsum Encyclopedia
2018年5月8日 Gypsum is one of the most widely used minerals in the world Some 90 countries mine gypsum, producing more than 100 million tons (91 million metric tons) annually The Gypsum is the most common sulphate It is mainly a mineral of evaporitic origin where it crystallizes by direct precipitation or by hydration of the anhydrite, it thus forms thick layers, frequently alternating with levels of marl or clays, Gypsum Encyclopedia2006年2月7日 Gypsum is a mineral consisting of watercontaining calcium sulphate (CaSO 4 2 H 2 O) When calcined (roasted) at temperatures of 120250°C, gypsum releases 75% of its Gypsum The Canadian Encyclopedia2022年2月18日 含水 硫酸盐矿物 。 化学组成为Ca [SO 4 ]2H 2 O，晶体属单斜晶系。 又称二水石膏或生石膏。 在中国药典中有细理石、冰石、软石膏、寒水石、玄精石等之称。石膏 《中国大百科全书》第三版网络版
Gypsum Simple English Wikipedia, the free encyclopedia
Gypsum (CaSO 42H 2 O) is a common sulfate mineral made of calcium sulfate Gypsum has been used as a building material for a long time, possibly since the neolithic Today, it is used Gypsum (CaSO 4 •2H 2 O), calcium sulfate dihydrate, has the unique property of releasing 15 molecules of water when heated to about 320350 o F The resulting chemical compound, calcium sulfate hemihydrate (CaSO 4 •½H 2 O) will, in Infrastructure and Construction Materials Guide — Because gypsum dissolves over time in water, gypsum is rarely found in the form of sand However, the unique conditions of the White Sands National Monument in the US state of New Mexico have created a 710 km² (275 sq mile) expanse of white gypsum sand, enough to supply the construction industry with drywall for 1,000 years [2]Gypsum chemeurope2023年1月24日 Gypsum is found as twinned monoclinic crystals, called Selenite, or silky fibrous crystals, called Satin spar Massive blocks of finegrain white, Van Nostrand's Scientific Encyclopedia, Douglas M Considine (ed), Gypsum CAMEO Museum of Fine Arts, Boston
Gypsum Simple English Wikipedia, the free encyclopedia
Gypsum Gypsum (CaSO 42H 2 O) is a common sulfate mineral made of calcium sulfateGypsum has been used as a building material for a long time, possibly since the neolithicToday, it is used in drywall, and as an ingredient of plaster of ParisIt can also be used as a fertilizerIt is softer than most minerals, with a value of 2 on the Mohs scale of mineral 2022年2月9日 A significant operation near Briar (Howard County) mines five beds of massive gypsum with an aggregate thickness of as much as twenty feet One variety of gypsum, satin spar, is interlayered with clay units as thin layers (05 to 25 inches in thickness), both above and below the five minable layers of alabaster, another variety of gypsumGypsum Mining Encyclopedia of ArkansasGypsum collected from Choctaw CountyGypsum is a soft sulfate mineral whose name derives from the Greek word for plaster, best known in plaster of Paris Gypsum is important in powdered form in agriculture and construction among other industries It is also important as a raw material for sculpture, particularly the variety known as alabasterGypsum Encyclopedia of AlabamaGypsum plaster building boards and lath: 2,4192 Other calcined gypsum products: 5210 Gypsum building plasters: 3708 Gypsum statuary and art goods: 224 Gypsum building materials, nsk: 1906 Other gypsum products, nsk: 81 Other NAICS Gypsum Product Manufacturing Encyclopedia
Usg Corp Encyclopedia
2018年6月11日 USG Corporation 101 South Wacker Drive Chicago, Illinois 60606 USA (312) 6064000 Fax: (312) 6064093 Public Company Incorporated: 1901 as USG Company Employees: 14,200 Sales: $219 billion Stock Exchanges: New York Midwest Z ü rich Geneva Basel Gypsum products are the principal goods manufactured by the USG Corporation The Wholly Owned Subsidiary of Saint Gobain Incorporated: 1917 as British Plaster Board Employees: 12,907 Sales: £ 26 billion ($445 billion) (2005) NAIC: Gypsum and Gypsum Product Manufacturing BPB plc is the world's leading manufacturer of plasterboard (also known as wallboard or drywall) and gypsum plastersBPB plc EncyclopediaGypsum is a white mineral, CaSO 42H 2 O (hydrous calcium sulfate), used in the manufacture of cements and plasters, especially plaster of Paris (to control the rate of setting of Portland cement), and also in some fertilizersSee calcium Gypsum is found in both mineral and rock form (Figure 1) As a mineral, it can form attractive, and sometimes extremely large, crystalsgypsum David Darling*plaster of Paris [1] (*POP*) n* a preparation of gypsum (calcium sulphate) that sets hard when water is added It is used in dentistry and orthopaedics for preparing plaster casts [1] Encyclopedia gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association Plaster Of Paris Encyclopedia
chickenwire structure Encyclopedia
chickenwire structure A closely packed, nodular mass of gypsum or anhydrite, with thin, interconnected fingers of mud between It is commonly found in sabkha salt deposits Source for information on chickenwire structure: A Dictionary of Earth Sciences dictionaryEncyclopedia is a usergenerated content hub aiming to provide a comprehensive record for scientific developments All content free to post, other mineral sources of calcium carbonate, or the mineral gypsum (calcium sulfate) While Chalk Encyclopedia MDPI2014年3月31日 The Assyrian king worships gods (Ashur, Shamash, Sin, Adad, and Ishtar) and records his achievementsThis freestanding gypsum monument was erected by King Ashurnasirpal II (reigned 883859 BCE) This stela weighs over four tons and was erected outside the Temple of Ninurta (a god of hunting and warfare) built by the king in his newly established Gypsum Stela of Ashurnasirpal II World History Encyclopediagypsum (jĭpˈsəm), mineral composed of calcium sulfate (calcium, sulfur, and oxygen) with two molecules of water, CaSO 4 2H 2 O It is the most common sulfate mineral, occurring in many places in a variety of forms A transparent crystalline variety is selenite A massive gypsum of delicate color and texture, readily worked into ornamental vases, boxes, and the like, is called Gypsum Article about gypsum by The Free Dictionary
Strip Mining Encyclopedia
2018年5月14日 Strip mining is used for mining phosphate fertilizer in Florida, North Carolina, and Idaho, and for obtaining gypsum (mainly for wallboard) in western states Encyclopedia gives you the ability to cite reference entries and articles according to common styles from the Modern Language Association Keene's cement Gypsum (sulphate of lime or plaster of Paris) steeped in a solution of alum (double sulphate of aluminium and potassium) then subjected to intense heat, ground to a powder, and siftedInvented around 1840, and also called Martin's or Parian cement, it was exceptionally hard when dry, took a high polish, and could also be coloured Easily cleaned, it Keene's cement EncyclopediaNinetyfive percent of all speleothems are formed by calcite, 2 – 3% by aragonite (the second polymorphic form of CaCO 3) and less than 2% are formed by the rest of about 250 cave minerals, most frequently gypsum (as some caves are developed in gypsum bedrock) More than 250 different cave minerals have been identified so farCave Minerals and Speleothems EncyclopediaGYPSUM, a common mineral consisting of hydrous calcium sulphate, named from the Gr 71APos, a word used by Theophrastus to denote not only the raw mineral but also the product of its calcination, which was employed in ancient times, as it still is, as a plaster When crystallized, gypsum is often called selenite, the QEX77PLT713 of Dioscorides, so named from oeXirri, Gypsum Encyclopedia
gypsic Encyclopedia
gypsic Applied to a soil horizon (a gypsic horizon) where secondary gypsum (CaSO4) has accumulated through more than 150 mm of soil, so that this horizon contains at least 5% more gypsum than the underlying horizon Source for information on gypsic: A Dictionary of Earth Sciences dictionaryDrywall is a common manufactured building material used globally for the finish construction of interior walls and ceilings Each panel of drywall is made of a paper liner wrapped around an inner core made primarily from gypsum Drywall New World Encyclopedia2018年5月17日 rock 1 / räk / • n 1 the solid mineral material forming part of the surface of the earth and other similar planets, exposed on the surface or underlying the soil or oceans ∎ a mass of such material projecting above the earth's surface or out of the sea: there are dangerous rocks around the island ∎ Geol any natural material, hard or soft (eg, clay), having a distinctive Rock EncyclopediaSome, such as gypsum, are constituents of cement, plaster, and paint; others, such as quartz, are important for electronics and telecommunications equipment Unfortunately, human history Credit is due under the terms of this license Mineral New World Encyclopedia
ජිප්සම් (Gypsum) සිංහල
ජිප්සම් (Gypsum) රසායනික ක්රමයෙන් ඇති වූ අවසාදිත පාෂාණයක සල්පේටයකි එයට ජිප්සම් යන නම ලැබී ඇත්තේ චෝක් යන අර්ථය දෙන ජිප්සොස් යන ග්රීක පදයෙනි89 years of expertise in applied and industrial chemistry Ullmann's is back in print! Generations of chemists and engineers have relied on the well structured and trusted information from Ullmann's Encyclopedia and you still can count on Ullmann's with the current 6th edition in print Ullmann's is a synonym for the world's most current and trustworthy knowledge in everything Ullmann's Encyclopedia of Industrial Chemistry2012年2月1日 Calcium sulfate [], CaSO4, has several forms, ie calcium sulfate dihydrate (commercially known as gypsum), calcium sulfate anhydrous (anhydrite), calcium sulfate hemihydrate, present in (PDF) Calcium sulphate KirkOthmer Encyclopedia of Chemical Plaster was first used as a building material and for decoration in the Middle East at least 7,000 years ago In Egypt, gypsum was burned in open fires, crushed into powder, and mixed with water to create plaster, used as a mortar between the blocks of pyramids and to provide a smooth wall facing In Jericho, a cult arose where human skulls were decorated with plaster and painted to Plaster Wikipedia
accessory plate Encyclopedia
accessory plate (sensitive tint) In optical microscopy, a plate used to determine the optical properties of mineralsQuartz, mica, and gypsum are the common minerals used to determine the slow and fast vibration directions that relate to the two refractive indices of an anisotropic mineral The terms ‘lengthfast’ and ‘lengthslow’ may then be assigned to a given mineral for Gypsum, crystal habit The word g) sum comes from the Greek gyps, meaning burned mineral There are several varieties of gypsum satin spar is a fine, soft, fibrous mineral alabaster is a more massive, finegrained, and often banded form and selenite ( v) a clear/ translucent form which shows good crystal habitExtensive beds of selenite are worked in the Mediterranean basin, Gypsum, crystal habit Big Chemical EncyclopediaHeating gypsum above approximately 150°C (302°F) partially dehydrates the mineral by driving off exactly 75% of the water contained in its chemical structure CaSO 4 2H 2 O + heat → CaSO 4 ½H 2 O + 1½H 2 O (steam) The partially dehydrated mineral is called calcium sulfate hemihydrate or calcined gypsum (commonly known as plaster of Paris) (CaSO 4 ½H 2 O)Gypsum Academic KidsHowever, laboratory evidence for the synthesis of anhydrite directly from NaClrich waters has shown that gypsum is always the stable phase () Hardie (1967) converted gypsum to anhydrite in solutions containing high concentrations of H 2 SO 4, and Cruft and Chao (1969) showed that under conditions of very high supersaturation, ie, high Ca 2+ or high SO 4 2−, anhydrite Anhydrite and gypsum SpringerLink
Gypsum, a Tricky Material Herrero 2009 ACSESS
2009年11月1日 The semisolubility of gypsum explains its actions in many soils The softness, fragility, and crystal water of gypsum are often not considered Routinely drying at 105°C and pulverizing samples for lab analyses casts suspicion on all analytical results because gypsum becomes anhydrite and/or bassanite at this temperature2018年5月17日 alabaster Massive, finegrained partly translucent type of gypsum (calcium sulphate), coloured white, yellow, red, and brown, called bastard alabaster, often employed for church fittings and monumentsOriental or calcareous alabaster is a translucent calcium carbonate, yellowishwhite in colour, broken with milky veinsThin slabs of oriental alabaster Alabaster Encyclopedia2012年4月26日 Provenance unknown, Mesopotamia Early Dynastic III period, about 25002200 BC A votive offering This gypsum statute was deposited in a temple to pray on behalf of the donor It may have been set up in his lifetime or possibly as a memorial after his deathHe wears a fleece skirt often referred to as a kaunakesGypsum statue of a man World History EncyclopediaMohs ’ Scale Mohs ’ scale, sometimes also called Mohs ’ hardness scale or Mohs ’ scale of mineral hardness, provides an index and relative measure of mineral hardness (ie, resistance to abrasion) The scale characterizes mineral harness by deciding a harder mineral ’ s ability to scratch a softer mineral It is one of several measures of hardness used in materials scienceMohs’ Scale Encyclopedia
Gypsy Moth Encyclopedia
Gypsy moth The gypsy moth (Portheria dispar), a native of Europe and parts of Asia, has been causing both ecological and economic damage in the eastern United States and Canada since its introduction in New England in the 1860s In 1869, french entomologist Leopold Trouvelet brought live specimens of the insect to Medford, Massachusetts for experimentation with silk Solubility gypsum For purposes of illustration we will assume complete dissociation of the gypsum The system may then be described water dissociation To determine the solubility of gypsum in a sodium chloride solution, the NaCl solubility equation is also necessary These three equilibris result in the following equilibrium K equations in a watergypsumsodium chloride Solubility gypsum Big Chemical EncyclopediaCalcium sulfate (or calcium sulphate) is the inorganic compound with the formula CaSO 4 and related hydratesIn the form of γanhydrite (the anhydrous form), it is used as a desiccantOne particular hydrate is better known as plaster of Paris, and another occurs naturally as the mineral gypsumIt has many uses in industry All forms are white solids that are poorly soluble in Calcium sulfate Wikipedia2018年6月27日 Gypsum contains large amounts of water bound in crystalline form; 10 square feet (10 sq m) of gypsum board contains over 2 quarts (2 1) of water When exposed to fire, the water in the gypsum board vaporizes; the temperature of the panel remains at 212 ° F (100 ° C) until all of the water is released, protecting the underlying wood frameworkDrywall Encyclopedia
Gypsum definition of gypsum by The Free Dictionary
gypsum a common white or colorless mineral (hydrated calcium sulphate) used to make cements and plasters (especially plaster of Paris) atomic number 20 , Ca , calcium a white metallic element that burns with a brilliant light; the fifth most abundant element in the earth's crust; an important component of most plants and animals