2results about How to "Adsorption does not affect" patented technology

The invention aims to provide an inhibitor for reverse flotation of micro-fine-particle hematite and a use method of the inhibitor, aiming at the problem that the micro-fine-particle hematite cannot be effectively inhibited by an existing iron ore reverse flotation process technology. According to the inhibitor, AMPS (2-acrylamido-2-methylpropanesulfonic acid) is subjected to chemical modification in a weakly alkaline solution, a product AMPS (OH <->) is generated, then in hematite flotation operation, the hydrophilicity of micro-fine particle hematite is improved, the flotation performance difference of hematite and silicate minerals is effectively increased, and efficient removal of the silicate minerals is facilitated. In addition, the modified inhibitor AMPS (OH <->) has the characteristics of strong selectivity, small dosage, simple preparation and the like, and can effectively reduce the content of silicon in the flotation concentrate of the micro-fine particle hematite, improve the yield and the recovery rate of the flotation concentrate and realize the target of efficient impurity removal of the micro-fine particle disseminated hematite.

This invention relates to the field of H-steel pre-assembly welding, and more particularly to an end positioning mechanism for an H-steel pre-assembly line. The mechanism includes a track frame, a web positioning assembly, and two sets of wing plate positioning assemblies. A movable support and a fixed support opposite to the movable support are respectively mounted on the track frame. The two sets of wing plate positioning assemblies are respectively mounted on the fixed support and the movable support. A web support is fixedly mounted on one side of the fixed support. The web positioning assembly is mounted on the web support. The web positioning assembly includes a web positioning support plate and a web baffle disposed on the side of the web positioning support plate. The wing plate positioning assembly includes a wing plate positioning support plate and a wing plate baffle disposed on the side of the wing plate positioning support plate. This invention provides a damping force proportional to the speed by adding a hysteresis damping unit at the floating stop, ensuring a smooth buffering process without rebound. This ensures that after the kinetic energy is lost, the stop near the conveying end face is completely in contact with the baffle end face, effectively preventing poor positioning accuracy.