3results about How to "Improve bridging" patented technology

This invention belongs to the field of mineral flotation technology, specifically relating to a forced slurry conditioning-eddy current mineralization-static separation mineral flotation system and method. It includes a slurry conditioning cylinder, a separation chamber, and a mineralization cylinder connected in sequence. The slurry conditioning cylinder contains a slurry conditioning pipeline; the separation chamber contains raw ore processing pipelines and middlings processing pipelines; and the mineralization cylinder contains an eddy current mineralization pipeline. The slurry conditioning pipeline, raw ore processing pipeline, eddy current mineralization pipeline, and middlings processing pipeline are connected sequentially. After minerals and flotation reagents are conditioned in the slurry conditioning cylinder to obtain raw ore slurry, it passes through the separation chamber to obtain middlings ore slurry, which then enters the eddy current mineralization pipeline. The middlings ore slurry returns to the separation chamber and enters the middlings processing pipeline for flotation separation. Finally, concentrate is collected at the top of the separation chamber. The mineral flow path designed in this invention enables efficient collisions between minerals of different particle sizes and slurry conditioning reagents, as well as between minerals and air bubbles, achieving effective flotation recovery.

The invention discloses a laser hybrid welding method for butt joint of plates with different thicknesses, which comprises the following steps of: preheating base metals and / or reducing the gap between the base metals by moving along the length direction of the gap between the base metals under the guidance of a TIG (Tungsten Inert Gas) welding gun, and welding the base metals of which the gap is reduced by moving a laser welding head along the length direction of the gap, meanwhile, the MAG welding gun moves in the length direction of the gap to weld the base metal subjected to laser welding, the gradient of the connecting position of the plates with the different thicknesses is reduced, in the moving process of the laser welding head, two servo motors in the laser welding head drive two reflectors to swing to change the propagation path of laser, and the laser welding is completed. And the laser swings on the two sides of the gap between the to-be-welded base metal in a reciprocating mode, the power of the laser is changed according to the plate thickness of the base metal, and the swing amplitude of the laser is determined according to the width of the gap. The gradient power mode enables the weld penetration depth to be more uniform, heat input to be smaller, laser power to be changed, and the problems of incomplete fusion, incomplete penetration or burn-through in the prior art are solved.

The application belongs to the field of water treatment, and discloses a plant tannin grafted composite magnetic flocculant and a preparation method and application thereof. The composite magnetic flocculant comprises polymeric aluminum ferric silicate, Chinese gallnut tannic acid, a grafting modifier, polyethyleneimine and sodium acetate buffer. After the natural green substance Chinese gallnut tannic acid is subjected to Michael addition by the grafting modifier, graft copolymerization is realized, a large number of positive charge points are provided, a stable complex is formed through winding and electrostatic interaction, more flocculation bodies can be bridged, more compact and tough alum flowers are formed, and magnetic medium material is put into the flocculation bodies when the flocculation bodies are formed, so that fine magnetic powder particles are used as precipitation nucleuses, a micro magnetic field is formed to promote the growth of the flocculation bodies, the efficient removal of TP is accelerated, the input of reagents and energy consumption is reduced, low-cost, high-efficiency and green TP removal of a sewage treatment plant is realized, the operation cost is reduced, and remarkable economic benefits are achieved.