The invention discloses a method for preparing an adsorption material from fine
coal gasification
slag. The method comprises the following steps: 1, taking a proper amount of the fine
coal gasification
slag, and adding water to prepare a fine
coal gasification
slag slurry with the
solid content being 10-30 wt%; 2, fully stirring the
slurry prepared in step 1, performing gravity
cyclone separation,collecting the obtained heavy separation product to obtain a
silicon-rich composite
slurry, and collecting the obtained light separation product to obtain a carbon-rich composite slurry; and 3, carrying out
solid-liquid separation and
drying on the carbon-rich composite slurry to obtain the carbon-rich adsorption material, and further preparing other products from the remaining
silicon-rich composite slurry. The method realizes the high-added value recycling of the fine
coal gasification slag.