Abstract

<p>The analysis of changes in moisture, equivalent diameter of the granules, layer porosity and size variation under the abrupt perturbing effect on the input humidity of the charge was made. The change in other parameters from the charge moisture lags about 30 seconds. This is due to different mass transfer rates for moisture and fine fractions. PI-controller settings for control of all measured parameters were calculated. The best indicators of the transition process comply with the control of moisture content of the charge. However, the most representative is the simultaneous control of these parameters. A new indicator of the effectiveness of the shower unit of the pelletizer drum is developed, based on the difference in the rates of mass transfer of moisture and solid particles. The value of this indicator should be kept to a minimum.</p>

Highlights

  • IntroductionThe most efficient modes of sintering, which correspond to Voice principle (equality of speeds of movement of the fronts of heat transfer and combustion of fuel mixture) to the success of the process of agglomeration of iron ore materials is necessary to ensure [1, 2]

  • The most efficient modes of sintering, which correspond to Voice principle to the success of the process of agglomeration of iron ore materials is necessary to ensure [1, 2]

  • The quality of pelletizing depends on many factors: the fractional composition of the initial charge and its hydrophilic properties, the amount of moisture in the pelletizer, the properties of the shower device and the pelletizer drum, etc

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Summary

Introduction

The most efficient modes of sintering, which correspond to Voice principle (equality of speeds of movement of the fronts of heat transfer and combustion of fuel mixture) to the success of the process of agglomeration of iron ore materials is necessary to ensure [1, 2]. Pelletizing, which forms the final fractional composition of the charge before loading onto the pallets of the sintering machine, is one of the main technological stages of preparation of the charge for sintering. The quality of pelletizing depends on many factors: the fractional composition of the initial charge and its hydrophilic properties, the amount of moisture in the pelletizer, the properties of the shower device and the pelletizer drum, etc. To improve the fractional characteristics of the charge is used most often. This has a positive effect, but does not exclude the use of intensive methods. The purpose of the article is to study the methods of pelletizing control in the pelletizer drum and to assess of the moisturing quality in it

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