A carburizing device is configured to perform a carburizing treatment on a treatment target, and includes a furnace body, an insulating container provided inside the furnace body, a furnace bed provided inside the insulating container and on which the treatment target is mounted, and a heat source provided inside the insulating container, in which at least surfaces of main components of the furnace bed, the heat source and the insulating container are made of a ceramic material.

The inorganic fiber molded body of the present invention is characterized in that the molded body has an extremely light weight, and is free from problems such as scattering of fibers and particulate matters from a surface thereof and environmental pollution such as generation of harmful gases. In addition, the present invention provides an inorganic fiber molded body that is excellent in not only thermal shock resistance and mechanical shock resistance but also a high-speed wind erosion resistance, well-balanced in properties and can be used in the applications of various heat-insulating materials. The present invention relates to an inorganic fiber molded body comprising inorganic fibers and inorganic binder particles and having at least one set of a high-fiber density region and a low-fiber density region, in which a ratio of a content of the binder particles in the high-fiber density region to a content of the binder particles in the low-fiber density region as measured by a predetermined method is 0.5:1 to 5:1; and a number-average particle diameter and the number of the inorganic binder particles on an outermost surface of the molded body as measured by a predetermined method are 20 to 35 m and less than 15, respectively.

Disclosed are a fibrous insulation block which can improve work efficiency of lining construction in various types of refractory furnace in iron works, and a construction method for a heated furnace-surface lining using the same. Specifically disclosed is a fibrous insulation block which comprises: a unit block (2) formed by laminating fibrous insulation blankets under pressure; a packing material (3) which has a pressing surface abutting section (5) covering at least a part of each pressing surface (2a, 2b) which are the side surfaces of the unit block in the direction in which the blankets are laminated, and a heating surface protection section (6) connected to the pressing surface abutting section so as to cover at least a part of a heating surface (2c) of the unit block, and in which a boundary section (7) between the pressing surface abutting section and the heating surface protection section covers an angle section formed by the pressing surfaces and the heating surface of the unit block; and a binding band (4) which maintains the shape of the unit block (2) using the packing material (3). The heating surface protection section (6) of the packing material (3) can be moved by the removal of the binding band and disposed on the same plane as the pressing surface abutting section, and has handhold sections (10) provided therein.

The invention relates to a refractory ceramic batch for the production of an unformed refractory ceramic batch, the use of a batch of this kind for lining metallurgical melting vessels and also a metallurgical melting vessel which is lined with an unformed refractory ceramic product based on a batch of this kind.

A furnace for performing a thermal treatment of a continuously moving metal strip includes: a hybrid wall lining facing inwardly of the furnace, the hybrid wall lining including a stack of polycrystalline fibre modules, and graphite lintels being fixed between or in the polycrystalline fibre modules; and electric heating elements provided inside the furnace along one or more vertical walls, and fixed on a side of the hybrid wall lining facing inwardly of the furnace. The polycrystalline fibre modules include fibres with at least 95% of Al2O3 so as to be compatible with a hydrogen protective atmosphere, a thickness of the polycrystalline fibre modules being between 200 and 500 mm. The electric heating elements are attached to the graphite lintels by a first anchoring system. The graphite lintels protect the electric heating elements against strip deviations by being cantilevered above the electric heating elements and protruding from the hybrid wall lining.

The invention relates to a device for inductively heating at least one workpiece, in particular a substantially strip-shaped workpiece, including at least one furnace housing; at least one inductor arrangement arranged within the furnace housing, the inductor arrangement being arranged at least partially in an inductor region of the furnace housing; at least one heating region for receiving process gas. The heating region being arranged within the furnace housing; and separating material for separating, in particular for thermally separating, the inductor region and the heating region. Furthermore, the invention relates to a method for inductively heating at least one workpiece.

A construction method of a fiber lining surface of an ethylene cracking furnace includes the following steps: S1, leveling the fiber lining surface; S2, wetting the leveled fiber lining surface; S3, rooting the wetted fiber lining surface; and S4, coating, before the fiber lining surface is dried, high-temperature paint to the fiber lining surface that has been rooted; and reserving multiple expansion sews on the fiber lining surface during the coating process. According to the construction method of the high-temperature paint for full fiber lining structure of the ethylene cracking furnace, the high-temperature paint is firmly bonded with the lining, and will not crack or fall off during use, protecting the full fiber lining by the coating and greatly extending the service life of the lining.

The invention relates to a device for inductively heating at least one workpiece, in particular a substantially strip-shaped workpiece, including at least one furnace housing; at least one inductor arrangement arranged within the furnace housing, the inductor arrangement being arranged at least partially in an inductor region of the furnace housing; at least one heating region for receiving process gas. The heating region being arranged within the furnace housing; and separating material for separating, in particular for thermally separating, the inductor region and the heating region. Furthermore, the invention relates to a method for inductively heating at least one workpiece.