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US 12,435,001 B2Granted
Compressed salt objects
AssigneeYissum Research Development Company of the Hebrew University of Jerusalem
InventorsDaniel Mandler, Noa Lapidot, Andrea Buffa, Gabriel Dikovsky, Lihi Rikanati
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Abstract
Provided are objects constructed of compressed salt combinations including salt and at least one additive, wherein the at least one additive is selected to impart the object with resistance to water and humidity.
Claims18
A compressed salt water-resistant object, comprising:
- a salt combination of a water-soluble salt comprising sodium chloride and at least one additional metal halide capable of interacting with carbonate or stearate to form a water-insoluble salt, and at least one additive selected from the group consisting of a water-soluble carbonate and a water-soluble stearate,
- wherein the water-soluble carbonate and/or the water-soluble stearate in said salt combination interacts in situ with metal ions present in said salt combination to provide a water-insoluble salt of the carbonate and/or stearate, to impart the object with resistance to water and humidity,
- the compressed salt water-resistant object being characterized by a compressive strength of at least 20 MPa, wherein the water-soluble salt of said salt combination comprises the byproduct of an industrial process, and wherein at least 90 wt % based on total weight of the salt combination is sodium chloride;
- wherein the compressed salt water-resistant object is non-deliquescent even in absence of a coating, when measured at 40° C. at below 74% relative humidity;
- and wherein the compressed salt water-resistant object is a at least one of a block, board, a building unit, or a construction unit;
- and
- wherein the salt combination comprises:
- at least 0.1 wt % magnesium or calcium;
- at least 0.05 wt % potassium;
- at least 0.05 wt % bromine;
- and
- at least 0.05 wt % sulfate, wherein the amount of magnesium chloride or calcium chloride is less than 0.001 wt %.
9 more elements
A compressed salt water-resistant object, comprising:
- a salt combination of a water-soluble salt comprising sodium chloride and at least one additional metal halide capable of interacting with carbonate or stearate to form a water-insoluble salt, and at least one additive selected from the group consisting of a water-soluble carbonate and a water-soluble stearate,
- wherein the water-soluble carbonate and/or the water-soluble stearate in said salt combination interacts in situ with metal ions present in said salt combination to provide a water-insoluble salt of the carbonate and/or stearate, to impart the object with resistance to water and humidity,
- the compressed salt water-resistant object being characterized by a compressive strength of at least 20 MPa, wherein the water-soluble salt of said salt combination comprises the byproduct of an industrial process, and wherein at least 90 wt % based on total weight of the salt combination is sodium chloride;
- wherein the compressed salt water-resistant object is non-deliquescent even in absence of a coating, when measured at 40° C. at below 74% relative humidity;
- and wherein the compressed salt water-resistant object is a at least one of a block, board, a building unit, or a construction unit;
- and
- wherein the water-soluble salt that is the byproduct of an industrial process includes Mg or Ca ions, and said additive comprises a water-soluble stearate-based salt, wherein the water-soluble stearate ion in said stearate-based salt interacts in situ with the Mg or Ca ions present in said byproduct of an industrial process.
4 more elements
Dependencies are inferred from the claim text.