Method for preventing evaporation-condensation caking of sodium chloride at high temperatures
AssigneeThe Dow Chemical Company
InventorsGerard C. Sinke, Martin A. Langhorst, James A. May, Sr.
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Abstract
By providing about 1 percent of an extremely finely divided powder, e.g. less than about 60 microns, disposed throughout a body of sodium chloride particles, the salt particles can be heated without caking to temperatures higher than otherwise obtainable without experiencing caking. Suitable powders include those binary oxides, carbonates, sulfates, phosphates and hydroxides of Group II and Group IV elements, which are solids within the temperature range to be encountered.
Claims13
A method for preventing caking in a body of granules of sodium chloride at temperatures within the range of from about 400.degree. C up to the melting point of sodium chloride, or up to temperatures of at least about 600.degree. C but less than the melting point of sodium chloride where melting occurs at such temperatures due to impurities in the sodium chloride, comprising:
- 1. dispersing throughout the sodium chloride an effective amount of a solid additive selected from the group consisting of binary oxides, carbonates, sulfates, phosphates, and hydroxides of Group II and Group IV elements, or mixtures thereof, wherein at least about 75% of the additive has a particle size sufficiently small to pass through a No. 230 sieve;
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- 2.
Dependencies are inferred from the claim text.