44 results about "Firebrick layer" patented technology

Provided are: a molten glass conduit structure, in which the erosion of a solid heat insulating material constituting a backup of a conduit can be prevented by a molten glass that exudes from a joint part between electrocast bricks constituting the conduit, without using any cooling means, and which can be manufactured at a reduced cost; a vacuum defoaming device using the conduit structure; and a method for vacuum defoaming a molten glass using the vacuum defoaming device. The molten glass conduit structure, said conduit structure comprising a conduit and a backup provided on the periphery of the conduit, is characterized in that: the conduit is a hollow tube having electrocast bricks disposed in the longitudinal direction and circumferential direction thereof; the backup comprises a refractory layer provided on the outside of the conduit and a heat insulating material layer provided on the outside of the refractory layer; the refractory layer comprises a refractory brick layer consisting of refractory bricks disposed in the longitudinal direction and circumferential direction of the conduit and a monothilic refractory layer that is formed by laying a monothilic refractory, said monothilic refractory containing, in terms of mass percentage of oxide(s), 30-100% of Al2O3 and 0-70% of SiO2, and then sintering the monothilic refractory; the heat insulating material layer comprises a solid heat insulating material layer comprising a solid heat insulating material disposed in the longitudinal direction and circumferential direction of the conduit; and the electrocast bricks constituting the conduit, the monothilic refractory constituting the monothilic refractory layer and the refractory bricks constituting the refractory brick layer are selected in such a manner that, when the molten glass passes through the conduit, a site being at the same temperature as the pour point of the glass is positioned within the heat insulating material layer.

The invention provides an improved type side-blowing molten pool smelting furnace. The improved type side-blowing molten pool smelting furnace comprises a long round furnace body, a furnace cylinder, a furnace top, a furnace body frame structure and a plurality of multi-channel spray guns. The multi-channel spray guns are arranged on the two sides of the long round furnace body correspondingly. The long round furnace body is formed by a furnace body protective plate in an enclosed mode. A water sleeve is installed on the lower portion of the inner side of the furnace body protective plate. A first firebrick layer is further inlayed in the inner side of the water sleeve. A second firebrick layer is arranged on the water sleeve and the first firebrick layer and installed on the inner side of the furnace body protective plate. The furnace cylinder is arranged at the bottom of the long round furnace body. The long round furnace body is provided with a metal discharge outlet and a slag outlet. The furnace body frame structure comprises steel vertical pillars, cross beams and pulling rods. The multi-channel spray guns are arranged on the two sides of the middle straight segment of the long round furnace body, and the output ends of the multiple multi-channel spray guns extend into the long round furnace body. By means of the improved type side-blowing molten pool smelting furnace, the problem that in the prior art, the temperature in a molten pool smelting furnace is difficult to control can be solved.

A firebox for a grill is provided. The firebox has a shell, an insulation layer, and a firebrick layer. The firebrick layer comprising a plurality of firebricks that form an inner peripheral surface of the firebox. The insulation layer formed between the firebrick layer and the shell or the insulation layer forming the outermost layer of the firebox. The shell preventing the collapse and / or unwanted airflow into the internal cavity of the firebox if a fracture is formed in the firebrick layer.

The invention discloses a blast furnace ironmaking device with a high-leakproofness hearth. The blast furnace ironmaking device comprises a furnace foundation, a bottom plate, a furnace shell, a sealing plate, a first cooling device, a sealing device and a heat conducting isolation barrel, wherein a refractory brick layer and a concrete layer are sequentially horizontally arranged in a space formed by the sealing plate and the bottom plate from up to down; the first cooling device is arranged between the sealing plate and the upper surface of the refractory brick layer; the first cooling device comprises a first cooling pipe, a second cooling pipe and a plurality of heat conducting connecting plates which are in the shape of a mosquito-incense holder; the sealing device is arranged on theouter side wall of the bottom of the furnace shell; the sealing device comprises an integrally formed sealing barrel and a sealing round plate which is horizontally and fixedly connected to the upperend of the sealing barrel; two groups of drainage plates are vertically and fixedly connected between the heat conducting isolation barrel and the furnace shell; and two groups of heat conducting plates are vertically and fixedly connected between the heat conducting isolation barrel and the sealing barrel. According to the blast furnace ironmaking device, temperature of the hearth can be decreased, the hearth can be subjected to liquid seal, and leakproofness of the hearth is greatly improved.

The invention discloses a rotary hearth furnace hearth structure. The rotary hearth furnace hearth structure which is a multilayer structure sequentially comprises, top to down, a carbon composite material layer which contains 8-45% of graphite and 92-54% of fused magnesia magnesium oxide, a carbon composite material layer which contains 8-45% of graphite and 92-54% of fused magnesia magnesium oxide, a mullite firebrick layer, a high-alumina brick layer, and a light-weight thermal-insulation brick layer. So the comprehensive hearth has a special slag erosion resistance and a metal and liquid slag adhesion resistance, and the dimension stability problem of expend with heat and contract with cold of the hearth is solved.