Kobe Steel, Ltd.

Kabushiki Kaisha Kobe Seiko Sho

Kenjiro Motonaga

Kozo Tanaka

Takumi Mizokawa

Kazuo Tanaka

Yukio Nakako

Shizuo Yokota

Haruo Kakunai

Toshio Ohzawa

Setsuo Tamura

Katsumi Kawashima

Takaaki Hiwatashi

Takayuki Sugahara

Junichiro Nada

Disclosed is a pulverizing, drying and transporting system for a pulverized fuel of a blast furnace of the type having at least one hot stove for supplying hot blast air, said hot stove also providing hot stove exhaust gas. The system includes a pulverizing and drying unit for pulverizing lamp raw fuel and drying the pulverized fuel. The hot stove gas is supplied to the pulverizing and drying unit. The hot stove exhaust gas dries the pulverized fuel and conveys it to a pulverized fuel collecting and separating device which separates the gas from the pulverized fuel. The line supplying the hot stove gas to the pulverizing and drying unit includes a heating device for selectively supplying additional heat to the hot stove exhaust gas. Moreover, the line for supplying the hot stove gas to the pulverizing and drying unit can include at least one of a temperature stabilizing device and a cooling device. The heating and cooling devices and controlled by a controller sensitive to the gas temperature at the outlet of the pulverizing and drying unit for maintaining the gas temperature at the outlet of the pulverizing and drying unit at a constant level. The temperature stabilizing device maintains the gas temperature at the outlet of the temperature stabilizing device at a designated level.

Pulverizing, drying and transporting system for injecting a pulverized

In a method of controlling the pulverization and dryness of a flammable material such as coal, the system is provided with both a push blower upstream from the pulverizer and a pull blower downstream from the pulverizer. The system is controlled so as to maintain the pressure within the pulverizer at an average equal to substantially the atmospheric pressure. In the method for controlling the pulverizing rate, a preset desired differential pressure across the pulverizer is maintained constant while the pulverizing motor speed and the pulverizing material feed rate are modified.

Method for controlling the pulverization and dryness of flammable

A method is disclosed for thermal dehydration of brown coal, by which an excellent heat recovery can be accomplished. The method includes the steps of admixing raw brown coal with a solvent to prepare a slurry, preheating the slurry in a heat exchanger, heating the same at 100.degree. to 300.degree. C., passing it through a gas-liquid separator to separate it into a steam-containing vapor and a dehydrated slurry and recoverying the dehydrated slurry while the steam-containing vapor is recycled to the heat exchanger so as to be utilized as a heating medium for preheating the slurry.

Method for thermal dehydration of brown coal

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Nishinomiya, Japan

Kenjiro Motonaga