Nippon Steel & Sumitomo Metal Corporation, a company involved in business activities in steel production sector, has been recently granted a patent for invention titled “METHOD AND DEVICE FOR CHARGING SINTERING MACHINE WITH RAW MATERIAL”.
The patent has been issued as granted patent number 305301 filed as application number 4734/DELNP/2011 having scope (abstract) of invention as:
“A method of charging a raw material into a sintering machine which effectively suppresses an avalanche phenomenon or undercharge phenomenon and enables stable segregation of a sintering material by granularity even when the distribution of granularity of the sintering material changes is provided. The method feeds a sintering material 8 from a top end of a slanted slit chute 1, has coarse grains 4 slide down from a bottom end on to an ore transfer car 9, and has fine grains 3 which pass through the slit chute 1 slide down through a deflector chute 2 arranged slanted below that onto an ore transfer car 9 for charging the raw material. The method constantly monitors a level of fine grains 3 deposited on the deflector chute 1 and adjusting a position of the deflector chute 2 with respect to the slit chute 1 so as to maintain a suitable level. That is, when there is a fluctuation in level of the fine grains 3, the deflector chute 2 is moved away from the slit chute 1, while when it is stable at a position lower than the suitable level, it is moved closer to it.”
The primary independent claim (claim 1) of this patent states:
“A method for charging a raw material into a sintering machine comprising feeding a sintering material from a top end of a slanted slit chute, having coarse grains slide down from a bottom end of the slit chute onto an ore transfer car of the sintering machine, and having fine grains which pass through the slit chute slide down through a deflector chute arranged slanted below said slit chute onto an ore transfer car for charging the raw Material in a sintering material charging apparatus, the. method characterized by monitoring a level of fine grains deposited on the deflector chute and adjusting a position of the deflector chute based on that level. ”
The patent has been granted under International Patent Classification (IPC) C22B 1/20, which covers inventions related to:
“in sintering machines with movable grates”
This patent can be opposed under post-grant patent opposition within 12 months of the date of grant of this patent.
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