초록 ▼

The invention concerns a method of preparing brine by dissolving salt in water, the salt containing sodium chloride but also calcium sulfate and/or other soluble impurities with a slower dissolution rate than sodium chloride, wherein the salt is supplied to a vessel including a grid for supporting a

The invention concerns a method of preparing brine by dissolving salt in water, the salt containing sodium chloride but also calcium sulfate and/or other soluble impurities with a slower dissolution rate than sodium chloride, wherein the salt is supplied to a vessel including a grid for supporting a salt bed, water is supplied and flows through and wets at least a portion of the salt bed before it flows through the grid, whereby small solid particles form and pass through the grid whereafter they are separated from the solution, said small particles containing essentially no sodium chloride. The invention further concerns a device for making brine by dissolving salt in water, which device comprises a vessel containing a grid support, means for supplying solid salt, means for supplying water, means for the outflow of brine, and means for removing undissolved salt particles at the bottom of the vessel.

대표청구항 ▼

A method of preparing concentrated brine from a sodium chloride salt containing one or more slightly soluble impurities having an aqueous dissolution rate lower than that of sodium chloride, comprising the steps of: (1) supplying salt to form a salt bed on a horizontal grid in a vessel; (2) maintain

A method of preparing concentrated brine from a sodium chloride salt containing one or more slightly soluble impurities having an aqueous dissolution rate lower than that of sodium chloride, comprising the steps of: (1) supplying salt to form a salt bed on a horizontal grid in a vessel; (2) maintaining at least a portion of the salt bed in process liquid; (3) forming a brine solution by at least partially dissolving the wetted portion of the salt bed in the process liquid; (4) supplying a first portion of water to a plurality of horizontally spaced locations in the vessel, each location distributing water into the salt bed; (5) supplying a second portion of water at a location below the first water supply and above and proximate to the grid, said second water portion being supplied at a location and in sufficient quantities to just deplete residual salt values without brine dilution, thereby freeing substantially all small solid particulates of said impurities from said supplied salt; (6) passing the brine and the small solid particulates of said slightly soluble impurities through the grid and out of the salt bed into a settling zone; and (7) separating the brine from said small solid particulates by removing the brine at a position below the grid and above the solid settled particulates prior to the brine becoming saturated in said impurities.