Device and method for measuring bursting temperature of pellet ores

Abstract

The invention relates to a device and a method for measuring the bursting temperature of pellet cores, which belong to the technical field of performance test of iron ore pellets. The device comprises a cup, a combustion chamber, a hanging basket, mass flow controllers and a computer, wherein the bottom of the cup is connected with the lower part of the combustion chamber through a U-shaped insulating tube, the upside of the cup is fixed with two supporting seats, the hanging basket is hung in the cup by a steel pole, a thermocouple is inserted from the side wall of the cup and is connected with the computer through a data wire, the upside of the combustion chamber is provided with a combustion nozzle and a combustion-supporting air inlet which are connected with a gas tank and an air blower respectively through a gas pipeline and a combustion-supporting air pipeline, and each gas pipeline is provided with the mass flow controller. The device and the method have the advantages that the test efficiency is high, a plurality of samples are tested in the same cup at the same time, and the test conditions are in accordance with the analysis of test results; and besides, the test device uses the mass flow controllers and the computer for automatic control, so that the control accuracy of the test temperature and the gas flow is improved.

Description

technical field [0001] The invention belongs to the technical field of performance detection of iron ore pellets, and in particular provides a device and method for measuring the bursting temperature of pellets. Background technique [0002] Pellets have the characteristics of high strength, uniform particle size, high grade, and low content of harmful elements, and are one of the important components of blast furnace charge. With the demand for large-scale and high-efficiency ironmaking blast furnaces, higher requirements are put forward for the performance and quality of pellets and other raw materials. [0003] The burst temperature is one of the important indicators of pellets. If the pellets have a low burst temperature, they will easily burst during the drying process and produce a large amount of powder, which will affect the later roasting process and greatly affect the quality of the pellets. The pellet burst temperature is related to raw material performance, addi...

AI Technical Summary

Problems solved by technology

At present, electric heating furnaces are used in some places to measure the bursting temperature of green pellets, but electric heating furnaces directly dry raw pellets, not in hot gas, but on-site high-temperature gas is used to dry the pellet material layer, and there is a certain air velocity , so the bursting temperature of the pellets made by the electric furnace cannot completely simulate the production situation

In addition, the spider plant currently used in the electric heating furnace is a zone, and only one test of the burst temperature of the raw ball of the sample is done at a time.

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