Potassium-releasing material

Patent metadata

Field	Value
Publication number	US-12312284-B2
Application number	US-202318198663-A
Country	US
Kind code	B2
Filing date	May 17, 2023
Priority date	Jan 18, 2017
Publication date	May 27, 2025
Grant date	May 27, 2025

Abstract

The present disclosure, in various embodiments, discloses hydrothermal methods, hydrothermally modified materials and dried hydrothermally modified materials. Certain dried hydrothermally modified materials can readily releases ionic species such as alkali metal ions (K + , Na + ), silicate salts, and alkaline earth metal ions (Mg 2+ , Ca 2+ ). Some dried hydrothermally modified materials can readily release aluminum ions and/or silicon, such as in the form of soluble silicates. Such processes and materials are useful, for example in economically preparing potassium releasing fertilizers.

First claim

What is claimed is:

1. A soil health product, comprising:
a K-feldspar phase; and
a calcium silicate hydrate phase comprising at least one phase selected from the group consisting of a dicalcium silicate hydrate phase, a tobermorite phase, and a hydrogarnet phase;
wherein:
the soil health product is configured to alter soil health;
the soil health product comprises the K-feldspar phase in an amount of at most about 65 wt. %; and
at least one of the following holds:
the soil health product comprises at least about 1 wt. % of the dicalcium silicate hydrate phase;
the soil health product comprises at least about 1 wt. % of the tobermorite phase; and
the soil health product comprises at least about 1 wt. % of the hydrogarnet phase.

2. The soil health product of claim 1 , wherein the soil health product is a fertilizer.

3. The soil health product of claim 1 , wherein the soil health product is a soil remediation product.

4. The soil health product of claim 1 , wherein the soil health product is a soil conditioner.

5. The soil health product of claim 1 , wherein the soil health product is a soil fertility product.

6. The soil health product of claim 1 , wherein the soil health product is configured to buffer soil pH.

7. The soil health product of claim 1 , wherein soil health product is configured to improve soil pore space.

8. The soil health product of claim 1 , wherein the soil health product is configured to promote soil strength.

9. The soil health product of claim 1 , wherein the soil health product is configured to improve soil mechanics.

10. The soil health product of claim 1 , comprising a nutrient.

11. The soil health product of claim 10 , wherein the nutrient is selected from the group consisting of magnesium, potassium, silicon, calcium, sodium and aluminum.

12. The soil health product of claim 1 , comprising a plurality of nutrients selected from the group consisting of magnesium, potassium, silicon, calcium, sodium and aluminum.

13. The soil health product of claim 1 , wherein the soil health product comprises at most about 60 wt. % of the K-feldspar phase.

14. The soil health product of claim 1 , wherein the soil health product comprises at least about 1 wt. % of the K-feldspar phase.

15. The soil health product of claim 1 , wherein the soil health product comprises at least about 1 wt. % of the calcium silicate hydrate phase.

16. The soil health product of claim 1 , wherein the soil health product comprises from about 1 wt. % to about 30 wt. % of the calcium silicate hydrate phase.

17. The soil health product of claim 1 , wherein the soil health product comprises the dicalcium silicate hydrate phase in an amount of at least about 1 wt. %.

18. The soil health product of claim 1 , wherein the soil health product comprises the tobermorite phase in an amount of at least about 1 wt. %.

19. The soil health product of claim 1 , wherein the soil health product comprises the hydrogarnet phase in an amount of at least about 1 wt. %.

20. The soil health product of claim 19 , wherein the hydrogarnet phase comprises plazolite or hydrogrossular.

Assignees

• Massachusetts Inst Technology
• Advanced Potash Tech Ltd

Inventors

• Ciceri Davide
• De Oliveira Marcelo
• Allanore Antoine
• Chen Dennis P
• Close Thomas C

Classifications

• C05D9/02

  containing trace elements · CPC title

• C05D5/00

  Fertilisers containing magnesium (C05D7/00 takes precedence) · CPC title

• C05D3/00

  Calcareous fertilisers (C05D7/00 takes precedence) · CPC title

• Y02P40/10

  Production of cement, e.g. improving or optimising the production methods; Cement grinding · CPC title

• C01B33/26

  Aluminium-containing silicates {, i.e. silico-aluminates} · CPC title