Method for fixing CO2 (carbon dioxide) by steel slag recycling

Abstract

The invention relates to a method for fixing CO2 (carbon dioxide) by steel slag recycling, belongs to the fields of energy conservation and emission reduction and comprehensive utilization of the resources, and provides an energy-saving and emission-reduction technology for steel slag recycling and CO2 fixing. A steel slag water quench process is coupled with a CO2 fixing process, so that CO2 is permanently cured and stored in the steel slag. On one hand, the method disclosed by the invention plays an environment-friendly role in curing of greenhouse gas CO2; on the other hand, the steel slag is effectively processed on the basis of basically not increasing the difficulty of the water quenching process of the steel slag, and the performance of the steel slag is improved so as to prepare a value-added product, so that a new route is inaugurated for recycling utilization of the steel slag. Not only is the problem of large-scale effective utilization difficulty of the steel slag solved, but also low-cost curing of CO2 is really achieved. Waste is prepared from waste, and the waste is changed into wealth, and the method is expected to be a new key to solve the global low carbon problem and has significant economic and social benefits.

Description

technical field [0001] The invention belongs to the field of energy saving and emission reduction and comprehensive utilization of resources, and relates to a steel slag recycling and CO fixation 2 energy-saving technology, providing a steel slag fixed CO 2 Methods. Background technique [0002] With the massive consumption of fossil energy, CO 2 Emissions are increasing year by year, and the greenhouse effect is also intensifying, which has brought great harm to the human living environment. It is expected that in the next 10 years, China's economy will continue to maintain a rapid development momentum, and its energy consumption and total carbon emissions will also increase. Therefore, CO 2 Emission reduction is imperative. On the one hand, energy consumption can be reduced by developing clean energy or improving production methods, that is, reducing CO2 from the source. 2 output; on the other hand, the later stage of CO 2 Governance, mainly CO 2 Large-scale storage...

AI Technical Summary

Problems solved by technology

[0004] Carbonation of steel slag to fix CO 2 It has aroused the interest of many researchers, but the carbonation of steel slag currently fixes CO 2 The main obstacle in the process is that the steel slag raw material is directly mixed with CO 2 Gas reaction, in the gas-solid system, the transmission of gas in the porous material is limited, resulting in a mismatch between chemical reaction and mass transfer, the steel slag raw material needs to be pretreated, or ground, or Ca, Mg, etc. High consumption, poor economy

Images