| abstract |
The invention discloses a stabilizing treatment method for sulfide arsenic-removed dregs. The stabilizing treatment method comprises the following steps: mixing cement clinker, mineral slag and copper slag in a ratio of parts by mass being (25-30) to (60-70) to (5-10), carrying out ball-milling on the materials, and enabling the materials to pass through a 180-mesh square hole sieve with weight of screen residues being 5wt%, thereby preparing a gel material; mixing arsenic sulfide slag and carbide slag in a dry-weight mass ratio being 1 to (1.0-1.2), and ageing and pre-treating the arsenic sulfide slag and carbide slag for 24 hours; preparing the pre-treated arsenic sulfide slag and the self-made gel material in a ratio of parts by mass being (25-35) to (65-75), adding calcium chloride with gel material amount being 0.4-0.5wt% or a mixture of calcium chloride and sodium chloride as an additive, controlling moisture content of materials to be 20-22wt%, mixing the materials on a horizontal type stirrer to macroscopically homogenize the materials, putting the homogenized materials into a continuous kneading extruder to forcibly mix, extrude, cut, naturally cure and carry out steam curing for 10 hours under pressure of 0.8-1.0MPa, and carrying out a toxicity leaching test on a solidified body according to GB5085.3-2007 to enable the solidified object to meet stock-piling or filling requirements. |