Method prepares adsorbent, the adsorbent itself and its immobilization of heavy metals pollution aqueous or solid phase

摘要

In the present invention, preparation method disclosed herein prepares (adsorbent) removal and fixed heavy metal cation and phosphate contamination solid phase or liquid phase as composite material, by the natural shale and/or waste of the type of the bearing assembly comprising bulk material from coal treatment process, the heat modification dolomites of the component of effective fixed type have high-content MgO. CaCOi3 and adhesive binder, preferably cement, mutual ratio are (1.3 to 4.3 )( 1.0 to 1.3 )( 1.0 to 1.5 ). Substantially, have range from 1. by addition gauging water25 to 2.0 coefficient is to the mixture prepared with the method, a kind of consistency forming bonding quality, this and harden contracting contract to set period 3 to 7 days. So hard substance is grinded up and is classified into the predefined granularities of various fractions with the material being crushed obtained, and preferably (1.0 to 3.0 ),( 0.0 to 1.And 0. 0)3) it (is wherein used to clean the solid phase of pollution below millimeter using this adsorbent or liquid phase is to determine the fraction applied by selection, that is the use of granular adsorbent, or the filter as furnace charge is used to clean the liquid phase of pollution in dynamic environment, it is added in renovating tank static environment and contains liquid phase, or as mixture be in the form of a powder fixed heavy metal in solid phase.