Device and method for preventing inner wall of scattering machine from material sticking

Abstract

The invention provides a device for preventing the inner wall of scattering machine from material sticking. The device comprises a scattering machine cavity, a pre-drying cavity, a feeding channel, hot smoke channels, a feeder, a smoke outlet, an air cannon and a scattering device, wherein the pre-drying chamber and the smoke outlet are arranged at the top end of the scattering machine cavity in parallel, and the smoke outlet is used for outputting smoke and drying the scattered materials; the feeding channel and the hot smoke channels are arranged at the upper end of the pre-drying cavity in parallel, and the feeding channel is located between the two hot smoke channels, the feeder is arranged at the upper end of the feeding channel; and the air cannon is arranged on the inner wall of the scattering machine cavity, and the scattering device is arranged on the inner wall of the pre-drying cavity. The method comprises the steps that hot smoke and the materials enter the pre-drying cavity simultaneously, the materials are pre-scattered through the scattering device, and the materials are pre-dried through the hot smoke; and the pre-scattered and dried materials directly fall into the scattering machine cavity to be further scattered and dried, the air cannon is used for removing the materials accumulated on the inner wall of the scattering machine cavity, and the dried materials are output through the smoke outlet.

Description

technical field [0001] The invention belongs to the technical field of powder drying, in particular to a device and method for preventing sticky material on the inner wall of a dispersing machine. Background technique [0002] In the preparation process of magnesium oxide suspension roasting, it is necessary to dry the high-humidity and high-viscosity magnesium carbonate ore powder first, and the dried magnesium carbonate powder can only be calcined in the main furnace to produce finished products after multi-stage preheating. When the wet and high-viscosity magnesium carbonate ore powder is dried, the magnesium carbonate ore powder will be dispersed by a mixer, and the high-moisture magnesium carbonate ore powder will be thrown by the high-speed rotating hammer after entering the cavity of the mixer. To the inner wall of the disperser cavity, some magnesium carbonate ore powder will adhere to the inner wall of the disperser cavity, and after a long period of accumulation, i...

AI Technical Summary

Problems solved by technology

[0002] In the preparation process of magnesium oxide suspension roasting, it is necessary to dry the high-humidity and high-viscosity magnesium carbonate ore powder first, and the dried magnesium carbonate powder can only be calcined in the main furnace to produce finished products after multi-stage preheating. When the wet and high-viscosity magnesium carbonate ore powder is dried, the magnesium carbonate ore powder will be dispersed by a mixer, and the high-moisture magnesium carbonate ore powder will be thrown by the high-speed rotating hammer after entering the cavity of the mixer. To the inner wall of the disperser cavity, some magnesium carbonate ore powder will adhere to the inner wall of the disperser cavity, and after a long period of accumulation, it will become thicker and thicker until the accumulated magnesium carbonate ore powder collapses due to its own weight. The magnesium carbonate ore powder that collapses and falls from time to time will enter the chamber of the breaker again to participate in the breakup, resulting in a substantial increase in the amount of material output from the exit of the breaker, which will cause large fluctuations in the pressure and oxygen content of the roaster system, thus Affect the quality of the product, in severe cases, it may lead to shutdown of the furnace

Images