China
Africa
Explore chapters and articles related to this topic
Inorganic scale
Published in Jon Steinar Gudmundsson, Flow Assurance Solids in Oil and Gas Production, 2017
The methodology illustrated above for barium sulphate, can be used for both calcium sulphates and strontium sulphate. The mineral celestite is also called celestine. The gypsum chemical balance includes water, called crystal water. Another calcium sulphate that contains crystal water is hemihydrate, having one-half water molecule per CaSO4 $ _{4} $ . Calcium sulphates are not common inorganic scales in oil and gas production.
Industrial Minerals
Published in Earle A. Ripley, E. Robert Redmann, Adèle A. Crowder, Tara C. Ariano, Catherine A. Corrigan, Robert J. Farmer, L. Moira Jackson, Environmental Effects of Mining, 2018
A. Ripley Earle, Robert E. Redmann, Adèle A. Crowder, Tara C. Ariano, Catherine A. Corrigan, Robert J. Farmer, Earle A. Ripley, E. Robert Redmann, Adèle A. Crowder, Tara C. Ariano, Catherine A. Corrigan, Robert J. Farmer, L. Moira Jackson
Strontium occurs commonly as the mineral celestite, and less commonly as the mineral strontianite. Both of these minerals form as chemical sediments, and thus are associated with sedimentary rocks such as limestone, dolostone, and evaporites. At the dolostone quarry near Haley, the celestite occurs in a different form: as slab-like masses of radiated, columnar, or fibrous crystals surrounded by dolomite (Dawson 1985). Because of the association with dolostone and limestone, strontium is mined along with calcium and magnesium derived from the dolomite and calcite minerals.
Surfactant mediated synthesis of barium sulfate, strontium sulfate and barium-strontium sulfate nanoparticles
Published in Inorganic and Nano-Metal Chemistry, 2019
Prutviraj K., Thimmasandra Narayan Ramesh
Extensive work has been carried out on barium/calcium/magnesium sulfates while strontium sulfate is the least studied. Strontium sulfate, also known as Celestine is iso-structural to barium sulfate and has the capacity to induce iridescence to glass and pottery glazes and to act as crystal refining agent in glass industry.[16] Strontium sulfate has been used to prevent poisoning of solid oxide fuel cells, as corrosion and wetting inhibitor for aluminum alloys, stabilizer for cermet, as chemiluminiscent and electroluminescent material.[17–22] Strontium sulfate along with barium sulfate has been used as high temperature solid lubricant.[23] Dispersible alkaline earth sulfate nanoparticles have been prepared using mixture of organic solvents in presence of organic compounds such as imidazole, triazole etc.[24,25] Barite and Celestine as well as family members of BaxSr1−x–SO4 (x = 0.25, 0.5 and 0.75) have been obtained using hydrothermal method.[26,27] During the precipitation of alkaline earth sulfates, the reaction condition should be maintained such that the pH is neutral, as acidic pH inhibits precipitation.