FINE PARTICLE CARBON DIOXIDE TRANSFORMATION AND SEQUESTRATION

• US 20080277319A1
• Filed: 05/16/2007
• Published: 11/13/2008
• Est. Priority Date: 05/11/2007
• Status: Abandoned Application

• Current Assignee: Carbon Sciences, Inc.
• Original Assignee: Carbon Sciences, Inc.
• Inventors: Wyrsta, Michael D.
• Application Number:
  US11/749,741
• Publication Number:
  US 20080277319A1
• Time in Patent Office: Days
• US Class Current: 209/166
• CPC Class Codes: B01D 2251/40 Alkaline earth metal or magnesium compounds
• CPC Class Codes: B01D 2257/504 Carbon dioxide
• CPC Class Codes: B01D 53/62 Carbon oxides
• CPC Class Codes: C01B 32/60 Preparation of carbonates or bicarbonates in general of percarbonates C01B15/10; of specific carbonates or bicarbonates according to the cation C01B-C01G
• CPC Class Codes: C01F 11/18 Carbonates
• CPC Class Codes: C01F 5/24 Magnesium carbonates
• CPC Class Codes: C04B 14/28 of calcium
• CPC Class Codes: C04B 18/12 from quarries, mining or the like
• CPC Class Codes: C04B 2/005 obtained from an industrial by-product
• CPC Class Codes: C04B 20/02 Treatment
• CPC Class Codes: Y02C 20/40 of CO2
• CPC Class Codes: Y02P 20/151 Reduction of greenhouse gas [GHG] emissions, e.g. CO2
• CPC Class Codes: Y02W 30/91 Use of waste materials as fillers for mortars or concrete

Abstract

An energy efficient method and system for producing micron-sized particles and transforming and sequestering carbon dioxide into mineral carbonates is described, along with uses for the mineral carbonates produced in the process.

Claims

1. A method for producing micron- or sub-micron-sized mineral particles from mineral and mining shines or tailings to be used in a carbon dioxide sequestration reaction system, comprising

classifying particles from silicate mineral mining slime or tailings thereby providing mineral particles of a size suitable for use in said carbon dioxide sequestration reaction system.

2-21. -21. (canceled)

22. A method for sequestering carbon dioxide produced by a carbon dioxide source, comprising

classifying silicate minerals from mining tailings or shines to obtain particles of a desired size;

combining mineral particles from said classifying with water to form a slurry; and

reacting metals from said particles in said slurry with carbon dioxide containing emissions from said carbon dioxide source to form mineral carbonates.

23. The method of claim 22, wherein said reacting is performed in a carbonate reactor.

24. The method of claim 23, wherein said reacting is performed at a pressure of at least 10 atm and a temperature of at least 100 degrees C.

26. The method of claim 23, wherein said reacting is performed at a pressure of at least 40 atm.

27. The method of claim 23, wherein said reacting is performed at a pressure of at least 30 atm and a temperature of at least 150 degrees C.

28. The method of claim 23, wherein said reacting is performed at a pressure of about 40 atm and a temperature of about 155 degrees C.

29. The method of claim 22, further comprising leaching metals from said mineral particles, wherein said metals react to form mineral carbonates, thereby sequestering said carbon dioxide.

30. The method of claim 22, further comprising separating said mineral carbonates from unreacted components in said slurry.

31. The method of claim 30, further comprising recycling said unreacted components into said slurry for additional reacting.

32. The method of claim 22, further comprising solidifying said mineral carbonates.

33. The method of claim 22, further comprising preparing said mineral carbonates as a powder.

35. The method of claim 22, further comprising using said mineral carbonates as filler in a building material.

36. The method of claim 35, wherein said building material is a drywall board.

37. The method of claim 35, wherein said building material is a cement.

38. The method of claim 35, wherein said building material is an extruded concrete structure.

39. The method of claim 22, wherein said carbon dioxide source is a fossil fuel burning power plant.

40. The method of claim 22, wherein said carbon dioxide source is an ethanol plant.

41. The method of claim 22, wherein said carbon dioxide source is a paper mill.

42. The method of claim 22, wherein said carbon dioxide source is an oil sands production facility.

43. The method of claim 22, wherein said slurry is transported to said carbon dioxide source before said reacting.

45. The method of claim 22, wherein carbon dioxide from said carbon dioxide source is transported to a site where said particles of a desired size are produced before said reacting.

46. The method of claim 45, wherein said carbon dioxide is transported by pipeline.

48. The method of claim 22, wherein said particles of a desired size are produced at said carbon dioxide source.

25. (canceled)

34. (canceled)

44. (canceled)

47. (canceled)

49. A method for sequestering carbon dioxide produced by a carbon dioxide source, comprising

obtaining silicate mineral particles of a desired size classified from mining tailings or shines;

combining said silicate mineral particles with water to form a slurry; and

reacting said particles in said slurry with carbon dioxide containing emissions from said carbon dioxide source to form mineral carbonates.

50-85. -85. (canceled)