Device and method for detecting sintering homogeneity

Abstract

The invention relates to a device and a method for detecting sintering homogeneity. The device comprises sampling guns, a hose, a vacuum pump and a gas analyzer, wherein the suction end of the vacuum pump is connected to joints of the sampling guns through the hose, and the other end of the vacuum pump is connected with the gas analyzer. The method comprises the following steps: the three sampling guns with different lengths are placed at positions of grate bars at the bottom part of a sintering trolley respectively, and travel with the sintering trolley; when the sintering trolley runs to an initial ignition section, the hose connected with the vacuum pump is connected to the three sampling guns, combustion exhaust gas is pumped into the gas analyzer for detection of the volume concentrations of CO, CO2 and O2, the symmetry and the continuity of the combustion exhaust gas are analyzed, and the transverse homogeneity and the longitudinal homogeneity of sintering of the trolley are judged. By online detection of sintering smoke composition, the device and the method have the advantages that the magnitude of the transverse homogeneity and the magnitude of the longitudinal homogeneity of the sintering trolley can be accurately judged, and non-dead-angle gas composition analysis of the whole trolley is achieved; besides, the sintering operation process and the ore blending scheme can be improved and optimized in real time based on detection and judgment results, therefore, the quality of sintered ore is improved.

Description

technical field [0001] The invention belongs to the technical field of sintering inspection and testing, and in particular relates to a detection device and a detection method for sintering process control. Background technique [0002] Sinter is one of the main raw materials for blast furnaces, and its quality, especially the stability of its chemical composition, has always been one of the key research goals of metallurgists. For this reason, people have proposed homogeneous sintering technology, which includes raw materials, processes, operations and other parts of the technology, in order to solve the "segregation" problem. However, so far people have not found an effective online sintering homogeneity detection method, this is because iron ore powder sintering is a very complex three-phase chemical process, in which the air passes through the ore-forming layer and the combustion layer from top to bottom. , Over-humid layer and raw material layer complete a series of re...

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Problems solved by technology

However, there is a hysteresis in this process, that is, the sintering process can only be judged when the sintering process is complete. In addition, this method only focuses on the sintering situation along the direction of the sintering trolley, and lacks effective data detection for the sintering lateral situation, so it cannot accurately judge the sintering platform. Sintering in the cross-sectional direction of the vehicle

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