Rare earth drying kiln

Abstract

The invention discloses a rare earth drying kiln which is suitable for updating design or technical reform of various drying kilns of electricity, coal, fuel gas, etc. The rare earth drying kiln comprises a kiln body and a thermal cycle assist device, wherein a drying chamber, feeding guide rails arranged in parallel and an air circulation passage are arranged in the kiln body. A plurality of thermal cycle heating devices are arranged on the outer side of the high temperature area of a main body of the drying kiln, and a high-temperature air blower in each device generates active and directional airflow in a fully-enclosed pipeline on a cross-sectional plane. A high-temperature air drying machine is arranged in a high-temperature air circulation loop, and a high-temperature-resistant air filtration agent is placed. According to the rare earth drying kiln, equipment operation can ensure that the temperature difference on all cross sections in the drying chamber of the high temperature area is small, a lot of water vapor in the chamber is exhausted in time, and the high-temperature-resistant air filtration agent adsorbs all kinds of harmful gases in the circulating air. Once equipment is put in use, the rare earth drying kiln has the advantages of high single-line production capacity, low unit energy consumption and stable product quality.

Description

technical field [0001] The invention relates to the field of rare earth drying, in particular to a rare earth drying kiln. Background technique [0002] Rare earth is a national strategic material, and there are many kinds of rare earth products. The rare earth burning process is to further dry the semi-finished rare earth powder after centrifugation or vacuum dehydration to meet the technical requirements of relevant standards. [0003] At present, the company's conventional burning equipment includes electric kiln, coal kiln, gas kiln, etc. Except for different heat sources, the overall structure and working principle of each type of equipment are the same, and they are all high-energy consumption equipment. The total length of the drying kiln is 40-28 meters, and the cross-section is rectangular; the interior is equipped with a linear drying chamber that runs through both sides and has a rectangular cross-section, and the drying heat source is set under the middle passag...

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a drying chamber that can solve the problem of large temperature differences in various parts of the cross-section of the high-temperature zone of the drying chamber, and can timely remove or absorb a large amount of water vapor and other harmful gases in the chamber, effectively inhibiting product burning. The rare earth drying kiln for the adverse secondary reaction accompanying the sintering process

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