An ore fluidized roasting device and method with adjustable unidirectional and bidirectional discharge

Abstract

A device and method for fluidized ore roasting with adjustable single- and bi-directional discharging, belonging to the field of metallurgical technology. The invention mainly includes a preheater, a heat separator and an adjustable roasting furnace body. The gas mixture outlet at the top of the preheater is connected to the spiral port at the top of the thermal separator through a connecting pipe; the discharge port at the bottom of the thermal separator is connected to the roasting furnace inlet at the top of the adjustable roasting furnace through a vertical pipe; it is adjustable The roasting furnace includes a reduction chamber and an air chamber. The reduction chamber includes a material inlet, a flue gas outlet, a discharge pipe, a fluidization chamber, a discharge chamber and a material extraction port. The air chamber is located below the reduction chamber and is set between the air chamber and the reduction chamber. There is an arc-shaped air distribution plate device, and each fluidization chamber and each discharge chamber are connected to a corresponding air chamber. The adjustable roasting furnace adopts a single and bidirectional discharge chamber design, which increases the volume of the roasting furnace and expands the gas-solid contact area, which is beneficial to improving reduction efficiency, enhancing material handling and adjustable capabilities, and can be connected to multiple cooling systems at the same time. Increase cooling rate.

Description

technical field [0001] An ore fluidized roasting device and method capable of adjusting unidirectional and bidirectional discharges relate to the field of metallurgy, in particular to the field of ore fluidized roasting. Background technique [0002] Mineral resources are an important material basis for national economic and social development, and play an irreplaceable role in supporting the sustainable development of the national economy and ensuring the safe operation of the people's livelihood. Among the numerous mineral resources, iron ore resources are one of the most important strategic mineral resources. With the rapid development of my country's iron and steel industry, the demand for iron ore has risen sharply. However, due to the characteristics of my country's low-grade iron ore, complex mineral phase composition, and high mining and dressing costs, the domestic iron ore supply is far from meeting the needs of the iron and steel industry. development needs. [0...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the technical problems existing in the prior art, the present invention provides an ore fluidized roasting device with adjustable one-way and two-way output, which can solve the problems of the prior art such as small unit material handling capacity, difficult adjustment and control of operating parameters, etc.

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