Method and apparatus for cooling and solidifying red-hot molten blast furnace slag
OwnerJoseph Elias Doumetinventor
Life of this patent
Estimating the term…
Abstract
The invention relates to the cooling of red-hot molten blast furnace slag. In this case in order that a substantial proportion of the heat content of the red-hot molten blast furnace slag can be recovered this is introduced together with coal or fuel containing substantially coal into a reactor in which the blast furnace slag is cooled by utilising the heat content of this slag and with the aid of supplied steam to gasify the coal to form a fuel gas, particularly water gas or blue gas containing CO and H.sub.2, which is drawn off separately from the cooled quantity of solids.
Claims33
A method of solidifying red-hot molten blast furnace slag and generating fuel gas, said method comprising:
- a. delivering to a reactor a mixture of said slag and fuel containing at least some coal;
- b. injecting steam into said reactor;
- c. gasifying said coal by the heat of said slag in the presence of said steam to form a fuel gas and solidify said slag;
- and
- d. discharging solidified slag and said fuel gas separately from said reactor.
Apparatus for solidifying red-hot molten blast furnace slag and generating fuel gas comprising:
- a. a reactor having an upper end and a lower end provided with an outlet;
- b. means for delivering into the upper end of said reactor a mixture of said slag and a fuel containing at least some coal, the heat of said slag being sufficient to gasify said coal;
- c. means for injecting steam into said reactor at a temperature sufficiently lower than that of said slag to solidify said slag and react with gas from said gasified coal and produce a fuel gas;
- d. means for discharging solidified slag from said reactor;
- and
- e. means for discharging fuel gas from said reactor separately from said solidified slag.
A method of solidifying red-hot molten blast furnace slag and generating fuel gas, said method comprising:
- a. delivering to a reactor a mixture of said slag and fuel containing at least some coal;
- b. gasifying said coal by the heat of said slag to form a fuel gas and thereby solidify said slag;
- and
- c. discharging solidified slag and said fuel gas separately from said reactor.
Apparatus for solidifying red-hot molten blast furnace slag and generating fuel gas comprising:
- a. an upright reactor having an upper end and a lower end provided with an outlet;
- b. means for delivering into the upper end of said reactor a mixture of said slag and a fuel containing at least some coal, the heat of said slag being sufficient to gasify said coal and produce a fuel gas and thereby cool and solidify said slag;
- c. means for discharging solidified slag from said reactor;
- and
- d. means for discharging fuel gas from said reactor separately from said solidified slag.
Dependencies are inferred from the claim text.