A device that is convenient for studying the cohesion phenomenon of granular mineral powder in the reduction process

Abstract

The invention discloses an apparatus convenient for research on the bonding phenomenon of ore particles in the process of reduction. A reduction reaction furnace is mounted on a pedestal; an annular interlayer is formed between a furnace body and a furnace shell; the pedestal is provided with an air inlet and an air outlet; an observation window is arranged on the upper end of the furnace shell; an imaging system for recording reaction process in the reaction chamber of the furnace body is arranged above the observation window; an enclosed cavity is arranged on a slide block on a guide rail of the pedestal; a binding post is arranged in the enclosed cavity; one end of a porcelain tube extends into the reaction chamber of the furnace body while the other end of the porcelain tube extends into the enclosed cavity the end, located in the reaction chamber, of the porcelain tube forms an object bearing platform; an electric heating element is arranged on the object bearing platform; an electric heating piece used for placing reduced ore powder is arranged on the electric heating element; and the electric heating element is connected with the binding post laid along the inner passage of the porcelain tube. The apparatus can simulate the reduction process of iron ore powder and realize real-time on-line observation and analysis of the whole process of formation, growth and bonding on the surface of the iron ore powder in the process of reduction.

Description

technical field [0001] The invention relates to a heating and observation device for the reduction of single particle ore powder, which is specially designed for the on-line observation of the evolution process of the surface characteristics of iron ore powder particles reduced by gas. Background technique [0002] At present, with the continuous decline of iron ore grade and the increase of fine ore, fluidization technology is becoming the most attractive process based on its unique advantages. In this process, the heat transfer and mass transfer efficiency between gas and mineral powder particles is extremely high, which is more conducive to the reduction of particles. However, the mutual cohesion of granular ore powders in the reduction process has become a restrictive link in its development. [0003] To sum up the past research methods, most of them inhibit the adhesion by adding inhibitors, and all of them indirectly reflect the adhesion inhibition by observing the ch...

AI Technical Summary

Problems solved by technology

However, there are very few real-time observations or online studies of the reduction process of particles in a reducing atmosphere.

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