2results about How to "Reduce desulfurization cost" patented technology

This invention relates to a method for recovering associated zinc from copper concentrate during copper smelting, belonging to the field of non-ferrous metal smelting and mineral processing technology. The method includes: preparing and grinding copper concentrate to obtain a finely ground slurry; the -0.074 mm particles in the finely ground slurry constitute 92-95% of the total solid particles; mixing the finely ground slurry with a copper collector and a zinc inhibitor; the zinc inhibitor contains sulfur dioxide, and the mixing temperature of the zinc inhibitor and the finely ground slurry is 40-50°C; and using microbubble flotation technology to separate copper from zinc concentrate using flotation, obtaining copper concentrate and zinc concentrate; the foam diameter of the microbubble flotation is 30-80 μm. This invention achieves efficient inhibition of zinc minerals by controlling the copper flotation separation temperature, at which waste sulfur dioxide is used synergistically as a zinc inhibitor, further controlling the particle size of the fine grinding and the foam diameter during flotation, thus constructing an integrated copper-zinc separation and zinc recovery process.

The utility model discloses a reactor and a reaction system for low-temperature catalytic decomposition of sulfur oxides, and relates to the technical field of flue gas desulfurization, in particular to a reactor and a reaction system for low-temperature catalytic decomposition of sulfur oxides, the reactor is a spherical reactor with the diameter larger than 15mm, and macropores and mesopores are uniformly distributed on the surface and inside the reactor. Macropores and mesopores are communicated with the outside of the reactor and are loaded with a catalyst, and SO2 is decomposed and removed at a low temperature of 100-130 DEG C under the synergistic effect of the catalyst and the porous structure of the spherical reactor, so that the desulfurization efficiency is remarkably improved, the energy consumption is reduced, the desulfurization cost of flue gas is reduced, and secondary pollution is eliminated.