Device and method for automatically grinding and re-burning scales in magnesium oxide vertical kiln

Abstract

The invention discloses a device and method for automatically grinding and re-burning scales in magnesium oxide vertical kiln. The device comprises a vertical kiln body, a secondary air inlet, a secondary air pipeline, a vertical kiln work platform, a driving system, a hydraulic pushing system, and a pneumatic grinding system, wherein the driving system, the hydraulic pushing system, and the pneumatic grinding system are arranged on the vertical kiln work platform. The pneumatic grinding system is mainly composed of an air compressor, a gas storage tank, and a grinding hammer. The grinding hammer comprises a high pressure cylinder, an electromagnetic reversing valve, and a high temperature resistant alloy drill rod. On the work platform of the vertical kiln, the lower part of the grinding hammer of the pneumatic grinding system is provided with a slide rail. The high temperature resistant alloy drill rod is inserted into the vertical kiln body through the secondary air pipeline so as to grind the magnesium oxide scales and at the same time, the magnesium oxide scales are cooled by the secondary wind. According to different vertical kilns and amounts and heights of scales generated during re-burning different grades of magnesium oxide, the grinding force, impacting force, impacting time, and impacting period can be adjusted; and the automatic discharging requirements on the block size of re-burned magnesium oxide can be met.

Description

technical field [0001] The invention relates to the technical field of raw material production of refractory materials, in particular to a device and method for automatically crushing lumps in a shaft kiln of heavy-burned magnesia. Background technique [0002] In the process of producing dead burnt magnesia in shaft kiln, furnace hanging accidents caused by burden lumps are common problems, which seriously affect the forward movement of burden. The main reason for the agglomeration of the charge is that there are impurities such as silicon dioxide, calcium oxide and iron oxide in the ash of raw materials and fuels. At high temperatures, the impurities react with part of magnesium oxide to form minerals with low melting points such as calcium magnesium olivine and dicalcium ferrite. Wait. On the one hand, these changes can cause the raw materials to produce a liquid phase at the calcination temperature, thereby fully sintering and densifying the dead-burned magnesia; The p...

AI Technical Summary

Problems solved by technology

[0004] The invention provides a device and method for automatically crushing the lumps in the heavy-burned magnesia shaft kiln, which effectively solves the problem of the lumps hanging from the furnace during the production process of the dead-burned magnesia shaft kiln

Images