IP Library Granted Patent US 8,920,210
Granted Patent B2
US 8,920,210 · App. 12/818,953 · Granted Dec 30, 2014

System and method for drying grit used for abrasive blasting

Inventor: Ronald C. Benson (Minneapolis, MN)
Assignee: Ronald C. Benson
F26B11/04F26B19/005B24C9/006F26B23/001
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Quick Facts
Patent No.
US 8,920,210
App. No.
12/818,953
Granted
Dec 30, 2014
Kind
B2
Abstract

A method and method for processing grit used for abrasive blasting may include receiving grit blasted onto a surface, where the grit includes moisture content. Air in which the grit being recycled is being processed may be heated. The moisture content may be evaporated from the grit using the heated air to produce dry recycled grit. The dried recycled grit may be stored.

Claims (32)

1. A method for processing grit used for abrasive blasting, said method comprising:

receiving grit blasted onto a surface, the grit including moisture content;

actively heating air in which the grit being recycled is being processed, wherein actively heating the air includes producing a flame to cause air in which the grit is being processed to be heated;

evaporating the moisture content from the grit using the heated air to produce dry recycled grit; and

storing the dried recycled grit.

2. The method according to claim 1 , wherein heating the air includes:

collecting heat from an engine operating an abrasive blasting process other than drying the grit; and

channeling the collected heat to cause air in which the grit is being processed to be heated.

3. The method according to claim 1 , further comprising rotating the grit to cause the grit to fall due to gravitational forces through the heated air.

4. The method according to claim 3 , further comprising applying negative pressure to draw the heated air across the grit when falling.

5. The method according to claim 4 , wherein applying negative pressure includes applying negative pressure to draw the heated air at a speed below approximately 90 miles per hour.

6. The method according to claim 1 , wherein actively heating the air includes actively heating the air to between approximately 200 degrees Fahrenheit and approximately 700 degrees Fahrenheit.

7. The method according to claim 1 , further comprising heating a structure being used to rotate the grit and cause the grit to fall in the structure due to gravitational forces.

8. The method according to claim 7 , further comprising disbursing heated air substantially evenly below the structure.

9. The method according to claim 1 , further comprising:

determining that moisture content is no longer contacting the grit being received; and

redirecting the grit being recycled so as not to be passed through heated air in response to determining that the moisture is no longer contacting the grit being received, otherwise, continuing to pass the grit through the heated air.

10. The method according to claim 9 , wherein determining that moisture content is no longer contacting the grit is performed automatically, and wherein redirecting the grit is also performed automatically.

11. The method according to claim 1 , further comprising:

sensing an amount of moisture content contacting the grit; and

adjusting heated air temperature and time in which the grit is exposed to the heated air based on an amount of moisture content being sensed.

12. The method according to claim 1 , wherein producing a flame includes producing a flame that is directed into or contained within a structure in which the grit is being processed.

13. The method according to claim 1 , wherein producing a flame within the structure includes producing a flame with only an air medium between the flame and the grit.

14. The method according to claim 1 , further comprising rotating the structure to cause the grit to rise and fall within the structure.

15. A method for processing grit used for abrasive blasting, said method comprising:

receiving grit blasted onto a surface, the grit including moisture content;

actively heating air in which the grit is being processed, wherein actively heating the air includes producing a flame to cause the air in which the grit is being processed to be heated;

evaporating the moisture content from the grit using the heated air to produce dry grit; and

storing the dried grit.

16. The method according to claim 15 , wherein producing a flame includes producing a flame that is directed into or contained within a structure in which the grit is being processed.

17. The method according to claim 15 , wherein producing a flame within the structure includes producing a flame with only an air medium between the flame and the grit.

18. The method according to claim 15 , further comprising rotating the structure to cause the grit to rise and fall within the structure.

Assignments (6)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jul 23, 2024
From: ROTO GRIT, LLC
To: TRIBBLE, RONALD
Reel/Frame 068055/0803 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 14, 2020
From: SURFACE HOLDINGS, LLC; BENSON, RONALD
To: ROTO GRIT, LLC
Reel/Frame 052667/0371 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Sep 5, 2019
From: BENSON, RONALD C.
To: SURFACE HOLDINGS LLC
Reel/Frame 050279/0121 →
SECURITY INTEREST Recorded Mar 20, 2019
From: BENSON, RONALD C
To: TRIBBLE, RONALD
Reel/Frame 048652/0561 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded May 31, 2011
From: SURFACE PREPARATION SYSTEMS, INC.
To: BENSON, RONALD C.
Reel/Frame 026363/0540 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 18, 2010
From: BENSON, RONALD C.
To: SURFACE PREPARATION SYSTEMS, INC.
Reel/Frame 024561/0281 →
Continuity (2)
Provisional Application 61218331 · Jun 18, 2009
Related Publication 20100323588A1 · Dec 23, 2010