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Steel slag pulverization and carbon fixation treatment system and application thereof

A carbon treatment and steel slag technology, applied in the field of steel slag crushing and carbon fixation treatment system, can solve the problems of insufficient dissociation of "steel" and "slag", complicated and inefficient steel slag crushing process, and short service life of wear-resistant parts , to achieve significant energy saving effect, improve carbon fixation efficiency, and high crushing efficiency

Active Publication Date: 2020-01-10
SHANDONG XIANGHUAN ENVIRONMENTAL TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The present invention finds that: the existing steel slag multiple crushing process cannot achieve "more crushing and less grinding", high energy consumption, short service life of wear-resistant parts, insufficient tailing slag crushing, "steel" and "slag" cannot be fully dissociated, tailings The shape of slag powder is poor, the use value is low, and the steel slag crushing process is complicated and inefficient, and the operating cost is high

Method used

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  • Steel slag pulverization and carbon fixation treatment system and application thereof

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Embodiment 1

[0036] refer to figure 1 , a steel slag crushing and carbon fixation treatment system, comprising: a steel slag buffer system, a steel slag crushing chamber, a high-pressure atomization system, an atomized gas dedusting system, a carbon fixation stabilization system, and a powder slag collection and capture system; wherein:

[0037] The steel slag buffer system includes: a steel slag inlet 1, a molten steel slag chamber 2, and a slag chamber outlet 3; . The molten steel slag enters the molten steel slag chamber from the steel slag feed port for buffering. The molten steel slag chamber has the functions of heating and heat preservation. The buffered molten steel slag enters the crushing chamber through the outlet of the slag chamber.

[0038] The steel slag crushing chamber 9 is connected to the outlet 3 of the slag crushing chamber, and the steel slag crushing chamber 9 is provided with a circulating cooling water inlet and outlet 10; the lower end of the steel slag crushing ...

Embodiment 2

[0048] A steel slag crushing and carbon fixation treatment system is the same as that in Embodiment 1, the difference is that: as a further technical solution, the steel slag crushing and carbon fixation treatment system also includes a waste heat recovery system. The waste heat recovery system includes a jacket cooler, pipeline, gas preheater, etc. The separated gas of carbon dioxide and water vapor from the separator enters the waste heat recovery system, and the water vapor generated by waste heat recovery continues to be preheated and then enters the fluidized bed for reaction device.

Embodiment 3

[0050] A steel slag crushing and carbon fixation treatment system is the same as that in Embodiment 1, except that: the fluidized bed reactor 17 is provided with a steel slag powder and superheated steam mixing device, so as to improve the carbon fixation reaction efficiency of the fluidized bed reactor.

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Abstract

The invention relates to the technical field of steel slag pulverization, in particular to a steel slag pulverization and carbon fixation treatment system and application thereof. The steel slag pulverization and carbon fixation treatment system uses high-pressure gas as a cold source and power for molten steel slag pulverization, and realizes the low energy consumption and deep pulverization of steel slag. The particle diameter of the obtained steel slag is less than 2mm. Steel slag powder reacts with carbon dioxide and superheated steam in a fluidized reactor to form stable calcium carbonate. Excess steam and carbon dioxide gas can be recycled as industrial waste heat; the steam becomes water to be separated from the carbon dioxide; and the carbon dioxide is used as make-up gas. The steel slag pulverization and carbon fixation treatment system can realize the rapid cooling, pulverization, and carbon fixation of the molten steel slag, and can fix greenhouse gases while saving energy.

Description

technical field [0001] The invention relates to the technical field of steel slag crushing, in particular to a steel slag crushing and carbon fixation treatment system and its application. Background technique [0002] The information disclosed in the Background of the Invention is only intended to increase the understanding of the general background of the invention, and is not necessarily to be taken as an acknowledgment or any form of suggestion that the information constitutes the prior art that is already known to those skilled in the art. [0003] In 2018, the cumulative output of crude steel in my country reached 856 million tons, the proportion of crude steel slag discharge was 12-15%, and the discharge of steel slag was more than 103 million tons. The utilization of steel slag can be roughly divided into internal circulation and external circulation. The internal circulation refers to the utilization of steel slag within iron and steel enterprises as raw materials f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B02C19/06B02C19/18B02C23/40B09B3/00B09B5/00B01D47/06
CPCB01D47/06B01D2258/025B02C19/0056B02C19/06B02C19/18B02C19/186B02C23/40B09B3/00B09B5/00Y02W30/20
Inventor 马春元宋德升李正强贺文腾
Owner SHANDONG XIANGHUAN ENVIRONMENTAL TECH CO LTD
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