Method for detecting high-temperature mineralization characteristic of sintered iron ores

Abstract

The invention discloses a method for detecting the high-temperature mineralization characteristic of sintered iron ores. The quality and performance of iron ores which are applied to the sintering are evaluated by detecting indexes of iron ore powder / CaO reaction of the iron ores such as initial temperature, reaction rate, post-reaction strength and reaction melting heat in the high-temperature mineralization process. By the method, multiple characteristics such as initial reaction temperature, maximum reaction rate, reaction heat absorption capacity, liquid-phase flowability and binding-phase strength can be detected in the same equipment in the same test, so the invention is characterized in that the measurement method is simple and high in detection speed and detection results are accurate. By the method for detecting the high-temperature mineralization characteristic of the sintered iron ores, the corresponding relation between maximum reaction rate, reaction heat absorption capacity and binding-phase strength properties and yield, quality and energy consumption indexes of sintered ore is established, so the method is scientific and practical.

Description

technical field [0001] The invention belongs to the technical field of iron ore sintering, and relates to a detection method for high-temperature mineralization characteristics of sintered iron ore. Background technique [0002] The traditional research on sintered iron ore powder mainly focuses on the normal temperature characteristics, which has been proved to be far from enough. In recent years, scholars at home and abroad have begun to pay attention to the high-temperature characteristics of iron ore fines, and have made in-depth research on a certain high-temperature characteristics of iron ore fines, and have made great progress. A series of indicators for judging the high-temperature characteristics of iron ore fines have emerged. Such as assimilability, liquid phase fluidity, melting property, etc., have many meanings for evaluating the high temperature characteristics of iron ore powder during sintering. [0003] Wu Shengli and others proposed the sintering basic c...

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Problems solved by technology

[0008] The purpose of the present invention is to provide a detection method for the high-temperature ore-forming characteristics of sintered iron ore, which overcomes the previous judgment only by observing the "final state" of iron ore powder after sintering or the simple shape change of the sample before and after sintering The high-temperature characteristics of iron ore powder and the complex detection process and other defects focus on the determination of the dynamic changes in the sintering process, and directly analyze the sintering process according to the macroscopic phenomena shown in the process and the knowledge of thermodynamics and kinetics, in order to evaluate the sintering performance of iron ore and realize Optimizing ore blending provides scientific basis

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