Method of preparing zinc ammonia carbonate solution
OwnerRaymond Lee Nipinventor
Life of this patent
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Abstract
A method of producing a zinc-ammonia-carbonate complex solution includes heating a solution made from urea with added zinc from a zinc source in a first vessel to produce zinc and impurities dissolved in the solution and a residual; cementing the solution by adding zinc dust to form a slurry; filtering the slurry to remove a first precipitate and to produce a first filtrate; optionally heating the first filtrate to form a second precipitate in the first filtrate; and filtering the first filtrate to remove the second precipitate and to produce a second filtrate which comprises the zinc-ammonia-carbonate complex solution.
Claims10
A method of producing a zinc-ammonia-carbonate complex solution, said method comprising:
- heating a solution made from urea with added zinc from a zinc source in a first vessel to produce zinc and impurities dissolved in the solution and a residual;
- cementing the solution by adding zinc dust to form a slurry;
- filtering the slurry to remove a first precipitate and to produce a first filtrate;
- optionally heating the first filtrate to form a second precipitate in the first filtrate;
- and
- filtering the first filtrate to remove the second precipitate and to produce a second filtrate which comprises the zinc-ammonia-carbonate complex solution.
A method of producing a zinc-ammonia-carbonate complex solution, said method comprising:
- heating a first solution made from urea with added zinc from a zinc source in a first vessel to form a first solution;
- bubbling gas evolved from the first vessel into a second vessel containing a second solution of zinc from a zinc source in water to form zinc and impurities dissolved in the second solution;
- cementing the second solution by adding zinc dust to form a slurry;
- filtering the slurry to remove a first precipitate and to produce a first filtrate;
- optionally heating the first filtrate to form a second precipitate in the first filtrate;
- and
- filtering the first filtrate to remove the second precipitate and to produce a second filtrate which comprises the zinc-ammonia-carbonate complex solution.
A method of producing a zinc-ammonia-carbonate complex solution, said method comprising:
- bubbling gas evolved from a reaction of lime and ammonium chloride supplementing with carbon dioxide into a first vessel containing a mixture of zinc from a zinc source and water to form a first solution;
- cementing the first solution by adding zinc dust to form a first slurry;
- filtering the first slurry to remove a first precipitate and to produce a first filtrate;
- optionally heating the first filtrate to form a second precipitate in the first filtrate;
- and
- filtering the first filtrate to remove the second precipitate and to produce a second filtrate which comprises the zinc-ammonia-carbonate complex solution.
Dependencies are inferred from the claim text.