Nippon Steel Corporation

Inax Corporation

Harima Refractory Co., Ltd.

Kurosaki Yogyo Co., Ltd.

Masataka Matsuo

Akira Iwahashi

Kazuo Hamai

Mituo Sugawara

Yaushisa Hirano

Kakuichi Murakami

Tokuaki Hatta

Akio Ishii

Takeshi Hagiwara

Toshimichi Morioka

Taizo Tamehiro

Kazuyoshi Kurayoshi

Fukuoka Hiromi

Tanezoh Tamehiro

Continuous kiln

An inorganic filler dispersed-resin composition comprising a resin matrix and fused and spherical inorganic particles, such as ceramic particles produced by flame jet melting added in the resin matrix. The ceramic particles are selected from the group consisting of alumina, silica, magnesia, zircon, zirconia, and calcia, and the resin is selected from the group consisting of epoxy, phenol, acrylic polyester, silicone and ABS resins.

Inorganic filler dispersed-resin composition

A refractory flame-gunning apparatus has a feeder, a controller and a flame-gunning burner. The feeder has a refractory-powder feeding section, an inflammable-gas feeding section and a combustion-assisting-gas feeding section. The controller controls the supply of refractory powder, inflammable and combustion-assisting gases. The flame-gunning burner has a plurality of refractory powder and flame ejecting nozzles disposed at its tip. The flame-gunning burner has a gas mixer and a combustion-assisting-gas cutoff valve. The gas mixer has an inflammable-gas passage leading to the inflammable-gas feeding section, a combustion-assisting-gas passage leading to the combustion-assisting-gas feeding section, a gas mixing chamber communicating with the inflammable and combustion-assisting gas passages, and a mixed-gas passage the upstream side of which communicates with the gas mixing chamber and the downstream side of which communicates with the flame ejecting nozzles. The gas mixer is provided for each individual flame nozzle. The combustion-assisting-gas cutoff valve is provided in the gas mixer and is actuated by the gas pressure built up in the mixed-gas passage. When backfire occurs, the pressure in the mixed-gas passage rises to close the combustion-assisting-gas cutoff valve, whereby the backfire is put out instantaneously.

Refractory flame-gunning apparatus

Refractory moldings or repairing deposits formed by flame projection, composed of a solidified phase formed from fused fine refractory particles and nonfused coarse refractory particles dispersed in the solidified phase. The moldings or deposits have high thermal shock resistance and erosion resistance. They are produced by flame-projecting fine refractory particles and coarse refractory particles together into a mold or onto a substrate, e.g. onto a portion of a furnace to be repaired.

Refractory powder flame projection moldings

A refractory powder flame projecting burner apparatus for lining repair or refractory fabrication in which oxygen-gas-entrained refractory powder is forcibly supplied to a burner where the oxygen gas mixes with fuel gas. A plurality of flame nozzles are provided in at least two parallel rows. A plurality of powder projecting nozzles are provided between and parallel to the rows of flame ports. A powder path is provided within the burner along the row of the powder projecting nozzles. A distributor having a plurality of axial grooves, with partitioned cavities at one end thereof, is inserted in the burner so that each cavity communicates with a plurality of the powder projecting nozzles. This refractory powder flame projecting apparatus forms a dense and durable refractory layer with a high yield.

Refractory powder flame projecting apparatus

Growing community of inventors

Kitakyushu, Japan

Masataka Matsuo