Methods of making plugged honeycomb bodies with cement patties
AssigneeCorning Incorporated
InventorKeith Norman Bubb
Life of this patent
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Abstract
A method of plugging a honeycomb body includes mixing a plugging mixture at a mixing temperature, wherein the plugging mixture comprises a plurality of inorganic particles, inorganic binder, organic binder, and water; dispensing the plugging mixture into a patty mold at a dispensing temperature; cooling the plugging mixture within the patty mold to a cooled temperature, such that a cement patty is formed; and pressing the cement patty into a plurality of channels in a honeycomb body, wherein the mixing temperature and the dispensing temperature are above a hydration point temperature of the organic binder in the plugging mixture, and the cooled temperature is below the hydration point temperature of the organic binder in the plugging mixture.
Claims19
A method of forming a plugging cement patty, comprising:
- mixing a plurality of inorganic particles, an inorganic binder, an organic binder, and a liquid at a mixing temperature greater than a hydration point temperature of the organic binder to form a plugging mixture comprising a viscosity in a range from about 1 cP to about 100 cP;
- dispensing the plugging mixture at a dispensing temperature greater than the hydration point temperature;
- and
- cooling the plugging mixture to a cooled temperature less than the hydration point temperature to increase the viscosity of the plugging mixture and form the plugging cement patty.
A method of forming a plugging cement patty for plugging a honeycomb body, comprising the steps of:
- mixing a plugging mixture comprising cordierite, colloidal silica, organic binder, and water at a mixing temperature greater than a hydration point temperature of the organic binder such that a viscosity of the plugging mixture at the mixing temperature is in a range from about 1 cP to about 100 cP;
- dispensing the plugging mixture into a patty mold at a dispensing temperature greater than the hydration point temperature of the organic binder such that the viscosity of the plugging mixture at the dispensing temperature is in the range from about 1 cP to about 100 cP;
- and
- cooling the plugging mixture within the patty mold to a cooled temperature less than the hydration point temperature of the organic binder to increase a viscosity of the plugging mixture and form the plugging cement patty.
A method of plugging a honeycomb body comprising the steps of:
- mixing a plugging mixture comprising a plurality of inorganic particles, an inorganic binder, an organic binder, and water at a mixing temperature greater than a hydration point temperature of the organic binder such that a viscosity of the plugging mixture is in a range from about 1 cP to about 100 cP;
- dispensing the plugging mixture into a patty mold at a dispensing temperature greater than the hydration point temperature of the organic binder;
- cooling the plugging mixture within the patty mold to a cooled temperature below the hydration point temperature to increase a viscosity of the plugging mixture and form a plugging cement patty, the cooling comprising cooling the patty mold to the cooled temperature prior to the dispensing;
- and
- pressing the plugging cement patty into a plurality of channels in the honeycomb body.
Dependencies are inferred from the claim text.