Silica fertilizer and uses thereof

Patent metadata

Field	Value
Publication number	US-12559438-B2
Application number	US-202017607705-A
Country	US
Kind code	B2
Filing date	Apr 24, 2020
Priority date	Apr 30, 2019
Publication date	Feb 24, 2026
Grant date	Feb 24, 2026

Abstract

Aqueous suspensions comprising a mineral having a silica content equal to or greater than about 40 wt % as a plant fertilizer, wherein the aqueous suspension comprises equal to or less than about 10% (w/v) of the mineral, methods of making said aqueous suspensions, and uses of said aqueous suspensions as a plant fertilizer.

First claim

The invention claimed is:

1 . A method of fertilizing a plant, the method comprising:
making an aqueous suspension comprising a mineral having a silica content equal to or greater than about 40 wt % from a powder or a concentrated slurry, and applying the aqueous suspension to a seed, plant or growing substrate, wherein: the aqueous suspension comprises equal to or less than about 10% (w/v) of the mineral; and the mineral is wollastonite having:
a d 50 (sedigraph) ranging from about 4 μm to about 10 μm;
a d 90 (sedigraph) ranging from about 5 μm to about 25 μm; and
a d 10 (sedigraph) ranging from about 0.1 μm to about 3 μm.

2 . The method of claim 1 , wherein the aqueous suspension comprises from about 0.5 wt % to about 5 wt % (w/v) of the mineral.

3 . The method of claim 1 , wherein the aqueous suspension has a total solids content between about 0.5 wt % and about 15 wt %.

4 . The method of claim 1 , wherein the aqueous suspension is made by diluting a concentrated slurry having a solids content equal to or greater than about 20 wt % and a viscosity ranging from about 60 cP to about 2000 cP.

5 . A concentrated slurry of a mineral having a silica content equal to or greater than about 40 wt %, wherein;
the concentrated slurry has a solids content equal to or greater than about 20 wt % and a viscosity ranging from about 60 cP to about 2000 cP; and the mineral is wollastonite having:
a d 50 (sedigraph) ranging from about 4 μm to about 10 μm;
a d 90 (sedigraph) ranging from about 5 μm to about 25 μm; and
a d 10 (sedigraph) ranging from about 0.1 μm to about 3 μm.

6 . The concentrated slurry of claim 5 , wherein the concentrated slurry further comprises one or more dispersing agents, one or more thickeners, one or more wetting agents, or a combination thereof.

7 . The concentrated slurry of claim 5 , wherein the concentrated slurry comprises from about 0.5 wt % to about 2 wt % total dispersing agents.

8 . A method of making an aqueous suspension comprising diluting the concentrated slurry of claim 7 , wherein the aqueous suspension comprises equal to or less than about 10% (w/v) of the mineral.

9 . The method of claim 8 wherein the aqueous suspension comprises from about 0.5 wt % to about 5 wt % (w/v) of the mineral.

10 . The method of claim 9 wherein the aqueous suspension has a total solids content between about 0.5 wt % and about 15 wt %.

11 . The concentrated slurry of claim 9 , wherein the concentrated slurry comprises from about 0.5 wt % to about 2 wt % total dispersing agents.

Assignees

• Imertech Sas

Inventors

• Gittins David
• Vogiatzi Christina
• Stovall Kalena
• Misuraca Jacob

Classifications

• C05G5/27

  Dispersions, e.g. suspensions or emulsions · CPC title

• C05G3/70

  for affecting wettability, e.g. drying agents · CPC title

• C05D9/00 Primary

  Other inorganic fertilisers · CPC title

• C05D9/02 Primary

  containing trace elements · CPC title