| 摘要 |
<p>PURPOSE: To make toxic metals in a waste product harmless by compounding individual specific amounts of an anion adsorbent, a reducing agent and a fixative consisting of a calcium oxide and a magnesium oxide, thereby preparing a composition for encapsulating the toxic metals. CONSTITUTION: The composition for encapsulating chrome and other toxic metals is prepared by compounding at least one <=30 wt.% anion adsorbent, <=35 wt.% reducing agent and 5 to 15 wt.% fixative consisting of the calcium oxide and the magnesium oxide. Concrete examples of the anion adsorbent are selected from a group of SORBOPLUS (R)-TM or HydroSORB'A' (R). Concrete example of the reducing agent are ferrous sulfate, sodium hydrogensulfite, sodium sulfite, etc. Further, concrete examples of the fixative are Portland cement, lime, hiln dust, POZZALIME (R), etc.</p> |
