Reclaim Composition Having Enhanced Properties

Patent metadata

Field	Value
Publication number	US-2025214899-A1
Application number	US-202418985813-A
Country	US
Kind code	A1
Filing date	Dec 18, 2024
Priority date	Dec 28, 2023
Publication date	Jul 3, 2025
Grant date	—

Abstract

The present invention is generally directed to a method of processing reclaim gypsum panels and/or pieces thereof. In one aspect, the method may include grinding a reclaim gypsum panel and/or pieces thereof into ground reclaim material and separating the ground reclaim material into two or more reclaim compositions. The two or more reclaim compositions may include a first reclaim composition and a second reclaim composition. A reclaim enhancing additive may be applied to the first reclaim composition such that the reclaim enhancing additive penetrates at least a portion of the thickness of the reclaimed gypsum of the first reclaim composition.

First claim

1 . A method of processing a reclaim gypsum panel and/or pieces thereof comprising:
grinding a reclaim gypsum panel and/or pieces thereof into ground reclaim material, the ground reclaim material comprising reclaimed gypsum and reclaimed facing material; and separating the ground reclaim material into two or more reclaim compositions, the two or more reclaim compositions comprising a first reclaim composition and a second reclaim composition, the first reclaim composition comprising the reclaimed gypsum in an amount of more than about 50 wt. % and the second reclaim composition comprising the reclaimed gypsum in an amount of less than about 50 wt. %; wherein a reclaim enhancing additive is applied to the first reclaim composition such that the reclaim enhancing additive penetrates at least a portion of the thickness of the reclaimed gypsum of the first reclaim composition.

2 . The method of claim 1 , wherein the reclaim enhancing additive is sprayed on the first reclaim composition.

3 . The method of claim 1 , wherein the application of the reclaim enhancing additive to the first reclaim composition reduces the amount of airborne dust present in the air adjacent the first reclaim composition.

4 . The method of claim 1 , wherein the reclaim enhancing additive comprises water in an amount of about 50 wt. % or more.

5 . The method of claim 1 , wherein the reclaim enhancing additive comprises water in an amount of about 80 wt. % or more.

6 . The method of claim 1 , wherein the reclaim enhancing additive has a solids content of about 20 wt. % or less.

7 . The method of claim 1 , wherein the first reclaim composition comprises reclaimed facing material, the reclaimed facing material comprising reclaimed paper, the reclaimed paper being present in the first reclaim composition in an amount of less than about 10 wt. %.

8 . The method of claim 1 , wherein the first reclaim composition comprises reclaimed facing material, the reclaimed facing material comprising reclaimed paper, the reclaimed paper being present in the first reclaim composition in an amount of less than about 5 wt. %.

9 . The method of claim 1 , wherein the reclaim enhancing additive comprises a polyol.

10 . The method of claim 1 , wherein the reclaim enhancing additive comprises a phosphorus containing additive.

11 . A method of processing a reclaim gypsum panel and/or pieces thereof comprising:
grinding a reclaim gypsum panel and/or pieces thereof into ground reclaim material, the ground reclaim material comprising reclaimed gypsum and reclaimed facing material; separating the ground reclaim material into two or more reclaim compositions, the two or more reclaim compositions comprising a first reclaim composition and a second reclaim composition, the first reclaim composition comprising the reclaimed gypsum in an amount of more than about 50 wt. % and the second reclaim composition comprising the reclaimed gypsum in an amount of less than about 50 wt. %; and calcining the first reclaim composition; wherein a reclaim enhancing additive is applied to the first reclaim composition such that the reclaim enhancing additive penetrates at least a portion of the thickness of the reclaimed gypsum of the first reclaim composition.

12 . The method of claim 11 , wherein the reclaim enhancing additive is sprayed on the first reclaim composition.

13 . The method of claim 11 , wherein the application of the reclaim enhancing additive to the first reclaim composition reduces the amount of airborne dust present in the air adjacent the first reclaim composition.

14 . The method of claim 11 , wherein the reclaim enhancing additive comprises water in an amount of about 50 wt. % or more.

15 . The method of claim 11 , wherein the reclaim enhancing additive has a solids content of about 20 wt. % or less.

16 . The method of claim 11 , wherein the first reclaim composition comprises reclaimed facing material, the reclaimed facing material comprising reclaimed paper, the reclaimed paper being present in the first reclaim composition in an amount of less than about 5 wt. %.

17 . The method of claim 11 , wherein the reclaim enhancing additive comprises a polyol.

18 . The method of claim 11 , wherein the reclaim enhancing additive comprises a phosphorus containing additive.

19 . A method of processing a reclaim gypsum panel and/or pieces thereof comprising:
grinding a reclaim gypsum panel and/or pieces thereof into ground reclaim material, the ground reclaim material comprising reclaimed gypsum and reclaimed facing material; and separating the ground reclaim material into two or more reclaim compositions, the two or more reclaim compositions comprising a first reclaim composition and a second reclaim composition, the first reclaim composition comprising the reclaimed gypsum in an amount of more than about 50 wt. % and the second reclaim composition comprising the reclaimed gypsum in an amount of less than about 50 wt. %; wherein a reclaim enhancing additive is applied to the reclaim gypsum panel and/or pieces thereof before and/or during the grinding of the reclaim gypsum panel and/or pieces thereof.

20 . The method of claim 19 , wherein:
the application of the reclaim enhancing additive to the first reclaim composition reduces the amount of airborne dust present in the air adjacent the first reclaim composition; the reclaim enhancing additive comprises water in an amount of about 50 wt. % or more; and the first reclaim composition comprises reclaimed facing material, the reclaimed facing material comprising reclaimed paper, the reclaimed paper being present in the first reclaim composition in an amount of less than about 5 wt. %.

Assignees

• Gold Bond Building Products Llc

Inventors

• Bailey Joseph J
• Iyer Ratnasabapathy Gurunathan
• Adams Alex

Classifications

• C04B28/14 Primary

  containing calcium sulfate cements {(gypsum-paper plates E04C)} · CPC title

• C04B2103/0075

  Anti-dusting agents · CPC title

• C04B18/167 Primary

  Recycled materials, i.e. waste materials reused in the production of the same materials · CPC title