US 12,281,046 B2
High oxygen fast firing methods for ceramics manufacture
Rachel Marie Shaver, Painted Post, NY (US); and Michael James Vayansky, Elkland, PA (US)
Assigned to Corning Incorporated, Corning, NY (US)
Appl. No. 18/011,973
Filed by CORNING INCORPORATED, Corning, NY (US)
PCT Filed Aug. 17, 2021, PCT No. PCT/US2021/046195
§ 371(c)(1), (2) Date Dec. 21, 2022,
PCT Pub. No. WO2022/046457, PCT Pub. Date Mar. 3, 2022.
Claims priority of provisional application 63/072,454, filed on Aug. 31, 2020.
Prior Publication US 2023/0242449 A1, Aug. 3, 2023
Int. Cl. C04B 35/195 (2006.01); C04B 35/638 (2006.01); C04B 35/64 (2006.01); C04B 38/00 (2006.01)
CPC C04B 35/195 (2013.01) [C04B 35/638 (2013.01); C04B 35/64 (2013.01); C04B 38/0006 (2013.01); C04B 2235/3481 (2013.01); C04B 2235/349 (2013.01); C04B 2235/6021 (2013.01); C04B 2235/6562 (2013.01); C04B 2235/6567 (2013.01); C04B 2235/6584 (2013.01); C04B 2235/661 (2013.01); C04B 2235/95 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method for firing a cordierite-forming green honeycomb body in a kiln, comprising:
heating the green honeycomb body in a first stage from an initial kiln temperature to a first kiln temperature that is from about 300° C. to 400° C. at a first heating rate of at most 100° C./hr, wherein an oxygen concentration during the first stage is greater than 16%;
heating the green honeycomb body in a second stage from the first kiln temperature to a second kiln temperature that is from about 600° C. to 700° C. at a second heating rate of greater than 125° C./hr;
heating the green honeycomb body in a third stage from the second kiln temperature to a third kiln temperature that is from about 800° C. to 900° C. at a third heating rate that is less than or equal to the second heating rate; and
heating the green honeycomb body in a fourth stage from the third kiln temperature to a fourth kiln temperature that is from about 1300° C. to 1450° C. at a fourth heating rate that is less than or equal to the third heating rate.