Tunnel type magnesian refractory brick salt immersing heat treatment kiln and technology

Abstract

The invention discloses a tunnel type magnesian refractory brick salt immersing heat treatment kiln and a technology. The heat treatment kiln comprises a heat treatment kiln body, an outlet preparation chamber and an inlet preparation chamber; the inlet preparation chamber and the outlet preparation chamber are arranged at an inlet and an outlet of the heat treatment kiln body correspondingly, theinlet and the outlet of the heat treatment kiln body are separated from the external atmosphere, and kiln doors are arranged between the heat treatment kiln body and the inlet preparation chamber aswell as between the heat treatment kiln body and the outlet preparation chamber correspondingly, and an inlet of the inlet preparation chamber and an outlet of the preparation chamber are also provided with kiln doors; and the heat treatment kiln body is divided into a plurality of areas, and the heat supply air volume of each area is independently adjusted. Compared with the prior art, the tunneltype magnesian refractory brick salt immersing heat treatment kiln and the technology have the beneficial effect that through arrangement of the inlet preparation chamber and the outlet preparation chamber, the air volume partitioning control mode, arrangement of hot air circulation devices and the like, the thermal regulation required by the treatment technology of the heat treatment kiln is ensured.

Description

technical field [0001] The invention relates to the field of salt-soaking heat treatment of magnesia refractory bricks, in particular to a tunnel type magnesia refractory brick salt-soaking heat treatment kiln and a process. Background technique [0002] Magnesium oxide, the main component of magnesia refractory bricks, easily reacts with water to form magnesium hydroxide. The chemical reaction equation is: [0003] MgO+H 2 O==Mg(OH) 2 ↓ [0004] After hydration, the surface of the magnesia refractory brick is bulging, frosted, loose in structure and has radioactive star-shaped cracks. With the intensification of the hydration reaction, the magnesia refractory brick will eventually be completely pulverized and damaged. In order to prevent the hydration of magnesia refractory bricks, magnesia refractory bricks are soaked in salt in industry. After soaking in salt, the magnesia refractory bricks need to be pushed into a heat treatment kiln for heat treatment to evaporate th...

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Problems solved by technology

[0007] 2) The product is continuously heated at 200°C for 8 hours, which requires the temperature fluctuation of the heat treatment kiln to be controlled within a small range, and every time the product enters and exits the kiln and the kiln door is opened, the outside air enters, It will have a great impact on the temperature and pressure of the heat treatment kiln, thus affecting the quality of the product;

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