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Property Analysis of Natural Brucite and Its Application as Sulfur Dioxide Absorbent

Seong‐Gu Kang, Myoung-Hwan Kim, Jin‐Bae Kim

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Abstract

Mg(OH)2 slurry was prepared by using natural mineral brucite mined in Liaoning province in China, and its de-SOx efficiency was compared with that of Mg(OH)2 slurry prepared by thermal decomposition and hydration of magnesite. The physical and chemical characteristics of Mg(OH)2 powders prepared from brucite and magnesite were similar. However, the layered plate structure of Mg(OH)2 crystal particles prepared from brucite had grown more stably. The desulfurization efficiency of Mg(OH)2 slurry prepared from brucite was slightly higher than that of magnesite. Brucite may be used as a new absorbent for the desulfuriztion of flue gas in the future.

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What this paper is about

Mg(OH)2 slurry was prepared by using natural mineral brucite mined in Liaoning province in China, and its de-SOx efficiency was compared with that of Mg(OH)2 slurry prepared by thermal decomposition and hydration of magnesite. The physical and chemical characteristics of Mg(OH)2 powders prepared from brucite and magnesite were similar. However, the layered plate structure of Mg(OH)2 crystal particles prepared from brucite had grown more stably. The desulfurization efficiency of Mg(OH)2 slurry prepared from brucite was slightly higher than that of magnesite. Brucite may be used as a new absorbent for the desulfuriztion of flue gas in the future.

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Available abstract

Mg(OH)2 slurry was prepared by using natural mineral brucite mined in Liaoning province in China, and its de-SOx efficiency was compared with that of Mg(OH)2 slurry prepared by thermal decomposition and hydration of magnesite. The physical and chemical characteristics of Mg(OH)2 powders prepared from brucite and magnesite were similar. However, the layered plate structure of Mg(OH)2 crystal particles prepared from brucite had grown more stably. The desulfurization efficiency of Mg(OH)2 slurry prepared from brucite was slightly higher than that of magnesite. Brucite may be used as a new absorbent for the desulfuriztion of flue gas in the future.

Key concepts: Brucite, Magnesite, Flue-gas desulfurization, Talc, Slurry, Sulfur dioxide, Chemistry, Gypsum

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