2 results about "Diethyl dithiocarbamate" patented technology

The application discloses a long-acting anti-aging modified asphalt based on bionic inspiration and a preparation and application thereof. The long-acting anti-aging modified asphalt based on bionic inspiration comprises the following components in mass fractions: 2-4 parts of zinc diethyl dithiocarbamate, 0.5-1.5 parts of a bionic polymer-benzene and propylene copolymer grafted dopamine, 4 parts of a thermoplastic elastomer SBS and 400 parts of a base asphalt. Through the synergistic effect of the bionic polymer and the sulfur anti-aging agent, a double anti-aging protection system is constructed. After short-term thermal oxygen aging, the modified asphalt can still maintain excellent high-temperature stability and low-temperature crack resistance. After long-term pressure aging, the performance attenuation amplitude of the modified asphalt is significantly reduced compared with that of a traditional SBS modified asphalt, and the long-acting anti-aging characteristics are exhibited.

The application discloses a method for floating tin and zinc in polymetallic sulfide ore, which comprises the following steps: grinding and thickening the polymetallic sulfide ore, then stirring and desliming the polymetallic sulfide ore by adding papaya seed glue and polyacrylamide, grinding and thickening the polymetallic sulfide ore, and floating the polymetallic sulfide ore by adding a flotation agent A to obtain flotation concentrate C and flotation tailings D, wherein the flotation agent A comprises ethion, zinc sulfate, cationic starch, lime and pine oil; grinding and thickening the flotation concentrate C, and floating the flotation concentrate C by adding a flotation agent F to obtain lead concentrate and flotation tailings G, wherein the flotation agent F comprises sodium tartrate, zinc sulfate, sodium diethyl dithiocarbamate, ethion and pine oil; adding sulfuric acid solution to the flotation tailings D after concentration, and grinding and magnetic separating the flotation tailings D, adding a flotation agent to the magnetic separation tailings to obtain flotation concentrate J, and obtaining tin concentrate by table gravity separation of the flotation concentrate J. The application solves the problem of poor flotation or gravity separation effect of fine-grained tin ore, and can improve the recovery rate of tin and zinc in the polymetallic sulfide ore.