Purification of barium ion source
First Claim
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1. A method of preparing purified barium nitrate, the method comprising:
- adding a nitric acid solution to an aqueous solution including barium ions to precipitate barium nitrate crystals, wherein the nitric acid solution is added in sufficient amount to provide a combined solution having at least 20 wt % nitric acid;
agitating the combined solution during precipitation of the barium nitrate crystals;
separating the barium nitrate crystals; and
washing the barium nitrate crystals with a wash solution including nitric acid in a range of 15 wt % to 35 wt % and having a temperature of not greater than 30°
C.;
wherein a single pass yield of barium ions is at least 80%;
wherein a single pass separation coefficient for strontium is at least 2000; and
wherein the method does not include washing the barium nitrate crystals with only deionized water.
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Abstract
A method of preparing purified barium nitrate includes precipitating barium nitrate crystals from a solution, and washing the barium nitrate crystals with an aqueous solution including at least 10 wt % nitric acid.
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Citations
10 Claims
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1. A method of preparing purified barium nitrate, the method comprising:
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adding a nitric acid solution to an aqueous solution including barium ions to precipitate barium nitrate crystals, wherein the nitric acid solution is added in sufficient amount to provide a combined solution having at least 20 wt % nitric acid; agitating the combined solution during precipitation of the barium nitrate crystals; separating the barium nitrate crystals; and washing the barium nitrate crystals with a wash solution including nitric acid in a range of 15 wt % to 35 wt % and having a temperature of not greater than 30°
C.;wherein a single pass yield of barium ions is at least 80%; wherein a single pass separation coefficient for strontium is at least 2000; and wherein the method does not include washing the barium nitrate crystals with only deionized water. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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Specification