CO2 mineralization method capable of co-producing potassium-enriched solution by high temperature method

Abstract

The invention discloses a CO2 mineralization method capable of co-producing potassium-enriched solution by a high temperature method, which mainly comprises the following steps of: adequately and evenly mixing smashed potash feldspar-enriched ore power and calcium chloride, and carrying out conversion reaction under the condition that the temperature is not lower than 600 DEG C; putting material which is adequately converted into a reactor, adding water, charging CO2, and carrying out mineralization reaction under the condition that the CO2 partial pressure is 0.3-15MPa, and the temperature is 50-350 DEG C; and charging material liquid which is adequately mineralized into separation equipment to separate the solid from the liquid, wherein the liquid phase is the potassium ion-enriched potassium-enriched solution, and the solid phase is the calcium carbonate-containing mineralized product. The CO2 is mineralized by the technical method disclosed by the invention, and the conversion rate of the potash feldspar component in the ore reaches 96%, so that compared with the highest conversion rate 13% of the existing CO2 mineralization method capable of co-producing the potassium-enriched solution, the conversion rate of the CO2 mineralization method is improved by over 6.3 times.

Description

technical field

[0001] The present invention relates to a CO 2 Mineralization treatment method for emission reduction, especially involving a method in mineralizing CO 2 Gas simultaneous production of soluble potassium salts. Background technique

[0002] In recent years, global warming has increasingly seriously affected the earth's ecological environment and global climate, including vegetation migration and species extinction, climate zone movement, sea level rise and land inundation, ocean current changes and El Niño frequency, etc. This is mainly caused by CO 2 caused by the warming effect of greenhouse gases. According to the third assessment report of the United Nations Intergovernmental Panel on Climate Change (IPCC), the global average surface temperature has increased by 0.6°C in the 20th century, and the sea level has risen by 0.1-0.2m. With an increase of 1.4-5.8°C in 1990, the sea level will rise by 0.09-0.88m. This will pose a serious threat to low-lying ...

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