Salt production via hydrohalite decomposition
AssigneeMichigan Technological University
InventorTim Eisele
Life of this patent
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Abstract
Salt production can include preparing hydrohalite particles by crystallization from saturated brine, adding the hydrohalite particles to a salt brine, thereby forming a hydrohalite-salt brine mixture, agitating the hydrohalite-salt brine mixture until the hydrohalite particles have decomposed into NaCl crystals, and filtering out the NaCl crystals from the salt brine. In some instances, an initial temperature of the salt brine prior to adding the hydrohalite particles is at least 0° C. In some instances, a ratio of salt brine to hydrohalite particles, by weight, is from 0.4 to 29.
Claims10
A method for producing salt, the method comprising:
- preparing hydrohalite particles by crystallization from saturated brine;
- adding the hydrohalite particles to a salt brine, thereby forming a hydrohalite-salt brine mixture,
- wherein an initial temperature of the salt brine prior to adding the hydrohalite particles is sufficient to decompose the hydrohalite particles without external heating;
- wherein the initial temperature of the salt brine prior to adding the hydrohalite particles is between 0° C. and 40° C.;
- and
- wherein a ratio of salt brine to hydrohalite particles, by weight, is from 0.4 to 29;
- agitating the hydrohalite-salt brine mixture until the hydrohalite particles have decomposed into NaCl crystals;
- and
- filtering out the NaCl crystals from the salt brine.
A method for producing salt, the method comprising:
- preparing hydrohalite particles by crystallization from saturated brine;
- adding the hydrohalite particles to a salt brine, thereby forming a hydrohalite-salt brine mixture,
- wherein an initial temperature of the salt brine prior to adding the hydrohalite particles is between 0° C. and 40° C.;
- and
- when the initial temperature of the salt brine is between 5° C. and 10° C., a ratio of salt brine to hydrohalite particles, by weight, is from 4.5 to 29;
- when the initial temperature of the salt brine is between 10° C. and 15° C., the ratio of salt brine to hydrohalite particles, by weight, is from 2.5 to 4.8;
- when the initial temperature of the salt brine is between 15° C. and 20° C., the ratio of salt brine to hydrohalite particles, by weight, is from 1.7 to 2.7;
- when the initial temperature of the salt brine is between 20° C. and 25° C., the ratio of salt brine to hydrohalite particles, by weight, is from 1.3 to 1.8;
- when the initial temperature of the salt brine is between 25° C. and 30° C., the ratio of salt brine to hydrohalite particles, by weight, is from 1.0 to 1.4;
- and
- when the initial temperature of the salt brine is between 30° C. and 40° C., the ratio of salt brine to hydrohalite particles, by weight, is from 0.4 to 1.2;
- agitating the hydrohalite-salt brine mixture until the hydrohalite particles have decomposed into NaCl crystals;
- and
- filtering out the NaCl crystals from the salt brine.
Dependencies are inferred from the claim text.