Method and device for controlling layer thickness of sintering starting material for sintering machine

Abstract

Disclosed is a method for controlling the layer thickness of a sintering starting material for a sintering machine, which properly controls the layer thickness of the sintering starting material on the entry side of the sintering machine. The pre- and post-ignition furnace layer thickness on the ignition furnace entry side and the ignition furnace exit side for the sintering starting material upon a palette is detected while the palette conveyance speed of the aforementioned palette and the feeder rotation speed of a drum feeder are detected, and a gate opening command for a split gate is obtained on the basis of: a gate opening reference value for the aforementioned split gate, which was obtained from the aforementioned ignition furnace entry-side layer thickness, a first opening correction value based on the aforementioned palette conveyance speed and the aforementioned feeder rotation speed, and a second opening correction value based on the amount of decrease from the size of the sintering starting material layer at the initiation of ignition and absorption, which was obtained from the aforementioned ignition furnace entry-side layer thickness and the aforementioned ignition furnace exit-side layer thickness.

Description

technical field [0001] The invention relates to a method and a device for controlling the thickness of a sintering raw material layer of a sintering machine for burning iron ore to generate sintered ore. Background technique [0002] In the sintering plant, iron ore, powdered coke, limestone and other sintering raw materials are loaded onto the tray of the sintering machine by using a drum feeder, and the sintering raw materials are ignited by the ignition furnace, and the main exhaust fan is used to blow the The bellows perform suction to generate sintered ore. At the discharge portion of the hopper for storing sintering raw materials provided to the drum feeder, there is provided a split gate that is divided in the width direction of the sintering machine and can individually adjust the opening of each gate. By adjusting the gate opening of the split gate, degree, so that the strength and particle size of the sintered ore generated are uniform, and the thickness of the ra...

AI Technical Summary

Problems solved by technology

[0009] However, in the conventional example described in the aforementioned Patent Document 1, on the front side of the cut-off plate on the upstream side of the ignition furnace, a detector is used to detect the thickness of the loaded layer of sintering raw materials formed on the pallet of the sintering machine, and based on The thickness of the loaded layer is detected, and the thickness of the loaded layer is controlled to a specified thickness. Therefore, there is an unsolved problem as follows: When the sintered raw material that has passed the detector for detecting the loaded layer thickness is ignited and is sucked by the main exhaust fan , if the density of the loaded sintering raw material is small, even if the loaded layer thickness is constant, only a part of the level will drop, so it cannot be said that the loaded layer thickness is constant

Moreover, when the rotation speed of the drum feeder as the raw material loading equipment and the conveying speed of the pallet of the sintering machine are changed, there is also an unsolved problem of delaying reaching the target layer thickness

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