Liquid-state steel slag micronization recycling device

Abstract

The invention relates to a liquid-state steel slag micronization recycling device. The device is characterized by comprising a pulverization heat exchange chamber 6, a runner 2, an annular tapered nozzle 3, a nozzle casing 4, a blower 8, a heat exchanger 10, a dust collector 11, a draught fan 13 and a chimney 14, wherein the annular tapered nozzle 3 is arranged on the top of the pulverization heat exchange chamber 6; the runner 2 is arranged on the annular tapered nozzle 3; the nozzle casing 4 is arranged at the outlet of the annular tapered nozzle 3; an air outlet 5 is formed on the top of the pulverization heat exchange chamber 6; a cool air inlet 7 and a bottom slag discharge port are formed at the bottom of the pulverization heat exchange chamber 6; the draught fan 8 is connected with the cool air inlet 7; the heat exchanger 10 is communicated with the air outlet 5 and the dust collector; and the draught fan 13 is communicated with the dust collector 11 and the chimney 14. Residual heat of high-temperature flue gas containing mass steel slag micropowder is recycled by adopting combination of the heat exchanger and the dust collector, and the value of the residual heat can bring considerable economic repayment.

Description

technical field [0001] The invention relates to a recovery device for waste in the iron or steel smelting process, in particular to a liquid steel slag micronization recovery device. Background technique [0002] The current utilization rate of steel slag in my country is still low. In the next few years, my country's steel slag treatment will mainly focus on improving the utilization rate of steel slag, and focus on solving the problem of the outlet of scrap steel slag. For steel slag to achieve "zero emission", its sales outlet must have a broad, long-term and stable market to accept it, and only the cement industry meets the conditions. In order to produce steel slag products that meet the specifications of the cement industry, the stability of steel slag components must be solved first to ensure application safety; thirdly, the steel slag products should be as fine as possible to reduce energy consumption in the grinding process and improve iron recovery. [0003] Accom...

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Problems solved by technology

[0007] It can be seen from the above that in the prior art, the micronization device suitable for metal has weak processing capacity, no waste heat recovery system, and is not suitable for the field of waste residue recovery.

However, the existing waste residue recovery system has low utilization rate of waste residue, low recovery rate of sensible heat resources, large floor area and low efficiency

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