Using Multi-layers Patents (Class 75/756)
  • Low sulfur coal additive for improved furnace operation
    Patent number: 11168274
    Abstract: The present invention is directed to additives for coal-fired furnaces, particularly furnaces using a layer of slag to capture coal particles for combustion. The additive(s) include iron, mineralizer(s), handling aid(s), flow aid(s), and/or abrasive material(s). The iron and mineralizers can lower the melting temperature of ash in low-iron, high alkali coals, leading to improved furnace performance.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: November 9, 2021
    Assignee: ADA-ES, Inc.
    Inventors: Stephen Allen Johnson, John Wurster, John Philip Comer
  • Composite iron pellets
    Patent number: 10214788
    Abstract: Disclosed herein are methods and compositions for producing composite iron pellets comprising an inner core comprising iron ore and a reducing agent comprising a carbonaceous material; and an outer shell comprising unreduced iron ore. The resulting composite iron pellets can be used to produce direct reduced iron (DRI) with improved productivity while reducing gas consumption.
    Type: Grant
    Filed: January 28, 2015
    Date of Patent: February 26, 2019
    Assignee: SAUDI BASIC INDUSTRIES CORPORATION
    Inventor: Mohamed Bahgat Saddik
  • Sinter processing system
    Patent number: 8480948
    Abstract: An apparatus and method for processing iron sinter is provided. A cooling system is arranged downstream of a furnace for cooling the iron sinter. The cooling system includes a convective cooling system for forcing air into the iron sinter and an evaporative cooling system for directing fluid into the hot sinter.
    Type: Grant
    Filed: May 13, 2011
    Date of Patent: July 9, 2013
    Assignee: Spraying Systems Co.
    Inventors: Edson Rocha, Marcos Torres