Preparation method of green environmental-protection attapulgite anti-sedimentation adsorbent for buildings

Abstract

The invention discloses a preparation method of a green environmental-protection attapulgite anti-sedimentation adsorbent for buildings, wherein the preparation method includes the steps: selecting: selecting natural mineral attapulgite clay and processing to obtain an attapulgite clay raw material; pretreatment: pouring the attapulgite clay raw material into a grinding device, grinding, after grinding into powder, pouring into molecular sieve, and screening; screening: selecting the attapulgite clay with the particle size of 2 mm-4 mm; decomposition: putting the selected attapulgite clay withthe particle size of 2 mm-4 mm into a stirrer, adding an acidic solution in a proportion of 11-45%, and then stirring evenly; filtering: stirring for a certain period of time, then pouring into a filter sieve, filtering, and removing impurities contained at the interior and the surface, to obtain a suspension; activating: heating and activating the suspension, and activating the suspension with azinc chloride solution with the concentration of 1-1.5 mol / L to obtain an attapulgite clay system; and roasting, discharging, cooling, cleaning, drying, grinding, sieving and preserving.

Description

technical field [0001] The invention relates to the technical field of adsorbents, in particular to a method for preparing an environmentally friendly attapulgite anti-sedimentation adsorbent for construction. Background technique [0002] Adsorbents are solid substances that are effective in absorbing certain components from a gas or liquid. Adsorbents generally have the following characteristics: large specific surface, suitable pore structure and surface structure; strong adsorption capacity for adsorbate; generally do not chemically react with adsorbate and medium; easy to manufacture and easy to regenerate; good mechanical properties strength etc. [0003] The patent document with the patent number CN102824892B discloses an adsorbent, preparation method and application for removing dioxins from waste incineration waste gas, including (1) grinding and crushing the attapulgite raw soil, and sorting out particles with a particle size of 3mm Attapulgite clay with a part...

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