Patents Assigned to Cadence Chemical Resources, Inc.
-
Patent number: 5226774Abstract: An apparatus is provided for charging combustible solids through a port in the wall of a rotating kiln into a heated zone of the kiln. The apparatus includes a port closure comprising inner and outer portions which cooperate to define a passage for closure-cooling air flow when the closure is in a port-closed position. A transfer assembly is mounted on the kiln wall in alignment with the port. During kiln rotation combustible solids are loaded from a staging assembly onto the transfer assembly for alignment with the port and delivery into the kiln.Type: GrantFiled: November 4, 1991Date of Patent: July 13, 1993Assignees: Cadence Chemical Resources, Inc., Ash Grove Cement CompanyInventors: James R. Tutt, Michel R. Benoit
-
Patent number: 5224433Abstract: A method is described for environmentally sound usage of combustible hazardous waste in an operating rotary kiln. The method is particularly adapted for disposal of solid hazardous wastes, optionally in the form of a blended waste homogenate, Packaged in sealable containers. The containers are used as fuel modules and charged into a rotary kiln cylinder where kiln gas temperatures range from about 950.degree. to about 1200.degree. C. to achieve high destruction and removal efficiencies.Type: GrantFiled: November 17, 1992Date of Patent: July 6, 1993Assignees: Cadence Chemical Resources, Inc., Ash Grove Cement CompanyInventors: Michel R. Benoit, Eric R. Hansen, Theodore J. Reese
-
Patent number: 5156676Abstract: Methods are disclosed for the use of inexpensive volatile fuels in the calcining zone of a cement kiln during the manufacture of cement clinker in a rotary vessel.Type: GrantFiled: May 7, 1991Date of Patent: October 20, 1992Assignees: Hoke M. Garrett, Ash Grove Cement Company, Cadence Chemical Resources, Inc.Inventors: Hoke M. Garrett, Eric Hansen
-
Patent number: 5122189Abstract: Methods are disclosed for the use of inexpensive volatile fuels in the calcining zone of a cement kiln during the manufacture of cement clinker in a rotary vessel.Type: GrantFiled: April 13, 1990Date of Patent: June 16, 1992Assignees: Hoke M. Garrett, Ash Grove Cement Company, Cadence Chemical Resources, Inc.Inventors: Hoke M. Garrett, Eric Hansen
-
Patent number: 5083516Abstract: A method is described for environmentally sound usage of combustible hazardous waste in an operating rotary kiln. The method is particularly adapted for disposal of solid hazardous wastes, optionally in the form of a blended waste homogenate, packaged in sealable containers. The containers are used as fuel modules and charged into a rotary kiln cylinder where kiln gas temperatures range from about 950.degree. to about 1200.degree. C. to achieve high destruction and removal efficiencies.Type: GrantFiled: July 17, 1991Date of Patent: January 28, 1992Assignees: Cadence Chemical Resources, Inc., Ash Grove Cement CompanyInventors: Michel R. Benoit, Eric R. Hansen, Theodore J. Reese
-
Patent number: 5078594Abstract: An apparatus is provided for charging combustible solids through a port in the wall of a rotating kiln into a heated zone of the kiln. The apparatus includes a port closure comprising inner and outer portions which cooperate to define a passage for closure-cooling air flow when the closure is in a port-closed position. A transfer assembly is mounted on the kiln wall in alignment with the port. During kiln rotation combustible solids are loaded from a staging assembly onto the transfer assembly for alignment with the port and delivery into the kiln.Type: GrantFiled: January 28, 1991Date of Patent: January 7, 1992Assignees: Cadence Chemical Resources, Inc., Ash Grove Cement CompanyInventors: James R. Tutt, Michel R. Benoit
-
Patent number: 4974529Abstract: A method is described for environmentally sound usage of combustible hazardous waste in an operating rotary kiln. The method is particularly adapted for disposal of solid hazardous wastes, optionally in the form of a blended waste homogenate, packaged in sealable containers. The containers are used as fuel modules and charged into a rotary kiln cylinder where kiln gas temperatures range from about 950.degree. to about 1200.degree. C. to achieve high destruction and removal efficiencies.Type: GrantFiled: September 25, 1989Date of Patent: December 4, 1990Assignees: Cadence Chemical Resources, Inc., Ash Grove Cement CompanyInventors: Michel R. Benoit, Eric R. Hansen, Theodore J. Reese
-
Patent number: 4969407Abstract: A method is described for environmentally sound usage of combustible hazardous waste in an operating rotary kiln. The method is particularly adapted for disposal of solid hazardous wastes, optionally in the form of a blended waste homoenate, packaged in sealable containers. The containers are used as fuel modules and charged into a rotary kiln cylinder where kiln gas temperatures range from about 950.degree. to about 1200.degree. C. to achieve high destruction and removal efficiencies.Type: GrantFiled: January 11, 1990Date of Patent: November 13, 1990Assignees: Cadence Chemical Resources, Inc., Ash Grove Cement CompanyInventors: Michel R. Benoit, Eric R. Hansen, Theodore J. Reese
-
Patent number: 4930965Abstract: An apparatus is provided for charging containerized fuel, particularly combustible hazardous waste homogenates, through a wall of a rotating kiln with minimal perturbation of mineral processing conditions. During kiln rotation fuel modules are loaded into the apparatus and charged into the kiln through a port in the kiln cylinder wall and onto the contained mineral bed. In a preferred embodiment the apparatus includes a device for actuating a port closure and a drop tube extending from the port into the kiln cylinder and positioned so that in-process mineral material does not contact the port closure during rotation of the kiln cylinder.Type: GrantFiled: November 23, 1988Date of Patent: June 5, 1990Assignees: Cadence Chemical Resources, Inc., Ash Grove Cement CompanyInventors: Charles D. Peterson, James R. Tutt, John Cody
-
Patent number: 4850290Abstract: A method is described for environmentally sound usage of combustible hazardous waste in an operating rotary kiln. The method is particularly adapted for disposal of solid hazardous wastes, optionally in the form of a blended waste homogenate, packaged in sealable containers. The containers are used as fuel modules and charged into a rotary kiln cylinder where kiln gas temperatures range from about 950.degree. to about 1200.degree. C. to achieve high destruction and removal efficiencies.Type: GrantFiled: November 23, 1988Date of Patent: July 25, 1989Assignees: Ash Grove Cement Company, Cadence Chemical Resources, Inc.Inventors: Michel R. Benoit, Eric R. Hansen, Theodore J. Reese