Stepping beam type sintering furnace

Abstract

The invention relates to the technical field of uranium dioxide core block sintering, in particular to a stepping beam type sintering furnace. The sintering furnace comprises a thermocouple, an electrode box, a heat insulation chopping board structure, a heat insulation brick structure, a heating body, a refractory brick structure, a metal furnace shell, a heat preservation brick structure, a stepping beam structure, a top cover, heat preservation cotton and a dome structure; a design scheme combining arching and hoisting is adopted, the hot bricks in the high-temperature area are built in anarch-raising mode, and the heat insulation material and the heat preservation material are of a hoisting structure, so that the risk of a hearth collapse clamping boat is reduced; the top cover structure is optimized, the number of heat preservation materials and heat insulation materials of the top cover is reduced, the load bearing of the aluminum oxide " I " shaped bricks is reduced, and the heat preservation effect of the hearth of the high temperature area is improved; the temperature of the surface of the top cover of the high-temperature zone is reduced, the operation period of the sintering furnace is prolonged, and the temperature of the working environment of the site is improved; and a mortise and tenon arch structure is adopted in the dome structure, the operation stability isimproved, and the collapse of the hearth is avoided.

Description

technical field [0001] The invention relates to the technical field of uranium dioxide pellet sintering, in particular to a walking beam type sintering furnace. Background technique [0002] UO 2 Pellet sintering is one of the basic processes of pellet manufacturing. After the green pellet comes out of the rotary press, it is loaded into the sintering boat, and the sintering boat enters the sintering furnace to complete the pellet sintering process under hydrogen atmosphere. [0003] The industrial production of uranium dioxide pellets adopts continuous high-temperature sintering furnaces. At present, two kinds of sintering furnaces are popular in the world: pusher boat sintering furnace and walking beam sintering furnace. [0004] The sintering boat of push boat type sintering furnace is pushed into the sintering furnace by the horizontal push rod at the furnace head, and moves to the end of the furnace under the push of the main push rod, and at the same time pushes the f...

AI Technical Summary

Problems solved by technology

[0008] Aiming at the above-mentioned prior art, the present invention provides a walking beam sintering furnace to solve the boat stuck accident in the prior art and the whole high temperature due to the fracture of the "I"-shaped hanging brick and the damage of the side brick of the furnace. The problem of complete destruction of the zone furnace

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