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This method is based on the application of maximum available recovery without scaling of any of the compounds present in the water as silica, calcium carbonate, calcium sulfate, barium sulfate
Conversion process for strontium sulfate in carbonate rich #183; We claim: 1. The process of preparing strontium carbonate of glass grade from celestite ores or concentrates including strontium carbonate, extraneous carbonates and iron oxide, comprising the steps of: washing the celestite ore or concentrate in a hydrochloric
#0183;#32;The liquor is transferred to an evaporator for recovering a calcium chloride rich solid and regenerating process water. The strontium sulfate enriched concentrate is washed with fresh water before being fed to the air/vaporlift loop reactor for conversion to strontium carbonate using a sodium carbonate aqueous medium.
Strontium sulfate Wikipedia
#0183;#32;I claim: 1. A method for the efficient recovery and conversion of strontium sulfate into strontium carbonate from low to medium grade ores having a strontium sulfate content of less than 80% by weight complexed with extraneous materials containing at least one of the group consisting of calcium, magnesium, barium, iron, and aluminum, said method comprising the steps of:
Essentially pure strontium carbonate is recovered from low to medium grade strontium sulfate containing ores by first treating the ore with a hydrochloric acid solution to remove extraneous materials including calcium, magnesium, barium, and iron. The remaining strontium sulfate containing residue is treated with ammonium carbonate to produce insoluble strontium carbonate and soluble ammonium
#0183;#32;Two methods of strontium carbonate preparation are currently practised: the socalled black ash process (sometimes referred to as the white ash process to distinguish it from barium chemical preparation), and the direct conversion method. In the black ash process strontium sulfide is formed by calcining celestite with finely powdered coal in a
Disclosed is a process for preparing high purity strontium carbonate, which comprises mixing celestite, anthracite coal, calcium chloride as catalyst, hightemperature roasting for deacidizing strontium sulfide, filtering strontium monosulfide through heat leaching, charging sodiumhydroxide and strontium monosulfide to result in alkali analysis reaction, producing strontium hydroxide
#0183;#32;I claim: 1. A method for the efficient recovery and conversion of strontium sulfate into strontium carbonate from low to medium grade ores having a strontium sulfate content of less than 80% by weight complexed with extraneous materials containing at least one of the group consisting of calcium, magnesium, barium, iron, and aluminum, said method comprising the steps of:
: NEW Patent CD for Conversion process for strontium sulfate in carbonate rich celestite ores to : Other Products : Everything Else
The Chemistry of Strontium and Barium Scales Robert J. Ferguson and Baron R. Ferguson French Creek Software, Inc. Other simple indices use the same approach to predict sulfate and other carbonate scales. The use of these simple indices is not recommended for high TDS water, Repeating the process until corrections are insignificant.
This invention relates to a low energy hydrometallurgical process for the production of strontium carbonate of chemical and glass grade from carbonate rich celestite ores typically having around 28% combined strontianite, calcite, dolomite and other carbonates. This process avoids negative environmental impact usually associated to calcining technology and involves fewer processing
#0183;#32;Conversion process for strontium sulfate in carbonate rich celestite ores to strontium carbonate using sodium carbonate in an air/vaporlift loop reactor. US Patent, No: . Google Scholar. Chen and Zhu, 2000. W. Chen, Y. ZhuPreparation of strontium carbonate from celestite.
Conversion process for strontium sulfate in carbonate rich celestite ores to strontium carbonate using sodium carbonate in an air/vaporlift loop reactor Nov 18, 1996 Centro De Investigacion Y De Estudios Avanzados Del
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