A method for preparing composite quartz slabs with arsenic-containing waste residue and flotation tailings

Abstract

The invention discloses a method for preparing composite quartz slabs by using arsenic-containing waste slag and flotation tailings, which is characterized in that the flotation tailings, arsenic-containing waste slag, unsaturated polyester, coupling agent and curing agent are used as raw materials, Composite quartz slabs are prepared through mixing, pressing and curing processes. The flotation tailings are molybdenite flotation tailings or spodumene flotation tailings. The arsenic-containing waste residue is arsenic-containing waste residue after soot treatment or arsenic-containing waste residue after water treatment. The amount of raw materials added meets: 26-55 parts by weight of flotation tailings, 11-45 parts by weight of arsenic-containing waste residue, 8-10 parts by weight of unsaturated polyester, 0.001-0.0046 parts by weight of coupling agent and 0.001-0.005 parts by weight of curing agent share. The invention realizes the solidification, stabilization and resource utilization of arsenic during the preparation process of the composite quartz slab. The method has wide sources of raw materials, low price, simple technical route, qualified leaching toxicity, and is convenient for industrial implementation.

Description

technical field

[0001] The invention relates to the technical field of solidification and safety treatment of hazardous solid waste and the technical field of artificial building materials. Arsenic solidification and recycling. Background technique

[0002] In the non-ferrous metal smelting process, arsenic is an unavoidable major pollutant, mainly because most non-ferrous metal minerals exist in the form of sulfide, and arsenic is mainly associated or symbiotic in the form of sulfide. During the smelting process, arsenic is mainly opened from the system in the form of smoke and dust, and the process of treating arsenic-containing smoke and dust will produce a large amount of arsenic-containing precipitates and tailings. In addition, these arsenic-containing tailings generally also contain heavy metal ions such as copper, lead, chromium, and mercury, which are hazardous solid wastes and must be properly disposed of in strict accordance with hazardous waste treatment and dis...