Methods and compositions using calcium carbonate and stabilizer

Patent metadata

Field	Value
Publication number	US-9139472-B2
Application number	US-201414566304-A
Country	US
Kind code	B2
Filing date	Dec 10, 2014
Priority date	Apr 28, 2011
Publication date	Sep 22, 2015
Grant date	Sep 22, 2015

Abstract

Provided herein are compositions, methods, and systems for a material containing metastable carbonate and stabilizer. Methods for making the compositions and using the compositions are also provided.

First claim

What is claimed is:

1. A method for making a composition, comprising:
contacting CO 2 from a CO 2 source with a solution comprising proton removing agent, alkaline earth-metal ions and a stabilizer under one or more conditions to make a composition comprising at least 50% w/w activated vaterite and the stabilizer wherein the stabilizer is sulfate and wherein the stabilizer in the solution is between 0.1-1 wt %, and
combining the composition with water and facilitating vaterite transformation to aragonite when the composition sets and hardens to form cement.

2. The method of claim 1 , wherein the facilitating the aragonite formation results in one or more of better linkage or bonding, higher tensile strength, or higher impact fracture toughness, after cementation of the composition.

3. The method of claim 1 , wherein the composition after combination with water, setting and hardening has a compressive strength in a range of 14-40 MPa.

4. The method of claim 1 , wherein the composition is a precipitate, slurry, or a dry powder.

5. The method of claim 1 , wherein the stabilizer comprises the stabilizer incorporated in crystal lattice of the activated vaterite in the composition.

6. The method of claim 1 , wherein the sulfate is sulfate in sea water, an alkali metal sulfate, alkaline earth metal sulfate, lignosulfate, or combination thereof.

7. The method of claim 1 , wherein more than 90% of the sulfate in the composition is from the stabilizer.

8. The method of claim 1 , wherein the sulfate is an alkali metal sulfate.

9. The method of claim 1 , wherein the one or more conditions are selected from the group consisting of mixing, stirring, temperature, pH, precipitation, residence time of the precipitate, dewatering of precipitate, washing precipitate with water, ion ratio, concentration of additives, drying, milling, grinding, storing, aging, and curing.

10. The method of claim 1 , comprising activating the composition by nuclei activation, thermal activation, mechanical activation, chemical activation, or combination thereof.

11. The method of claim 10 , wherein the activation comprises adding one or more of aragonite seed, inorganic additive or organic additive.

12. The method of claim 11 , wherein the inorganic additive or organic additive are selected from the group consisting of sodium decyl sulfate, lauric acid, sodium salt of lauric acid, urea, citric acid, sodium salt of citric acid, phthalic acid, sodium salt of phthalic acid, taurine, creatine, dextrose, poly(n-vinyl-1-pyrrolidone), aspartic acid, sodium salt of aspartic acid, magnesium chloride, acetic acid, sodium salt of acetic acid, glutamic acid, sodium salt of glutamic acid, strontium chloride, gypsum, lithium chloride, sodium chloride, glycine, sodium citrate dehydrate, sodium bicarbonate, magnesium sulfate, magnesium acetate, sodium polystyrene, sodium dodecylsulfonate, poly-vinyl alcohol, or combinations thereof.

13. The method of claim 11 , wherein the composition comprises between 0.1-5% w/w inorganic additive or organic additive.

14. The method of claim 1 , wherein the one or more conditions comprise having ratio of calcium to carbonate during formation of vaterite to be between 1:1 to 1.5:1.

15. The method of claim 1 , wherein the composition is formed with an average particle size of between 0.1-100 microns.

Assignees

• Calera Corp

Inventors

• Fernandez Miguel
• Chen Irvin
• Lee Patricia Tung
• Ginder-Vogel Matthew

Classifications

• C04B28/02

  containing hydraulic cements other than calcium sulfates · CPC title

• C04B22/16

  containing phosphorus in the anion, e.g. phosphates · CPC title

• C04B24/32

  Polyethers, e.g. alkylphenol polyglycolether · CPC title

• C04B24/18

  Lignin sulfonic acid or derivatives thereof, e.g. sulfite lye · CPC title

• C01F11/183

  the additive being an organic compound · CPC title