3results about How to "Reasonable match" patented technology

This invention discloses a low-nickel matte grinding and flotation process to improve copper-nickel recovery, comprising the following steps: S1, grinding; S2, roughing treatment; S3, cleaning treatment; S4, scavenging treatment; S5, regrinding and re-selecting the middlings; S6, merging the first concentrate from step S3 with the second concentrate from step S5 to obtain the final copper-nickel concentrate. This low-nickel matte grinding and flotation process utilizes a specially modified collector, combined with a closed-loop process of roughing-scavenging-middling regrinding and re-selection, and a differentiated step-by-step reagent dosing system, to achieve efficient and synergistic recovery of copper and nickel metals from low-nickel matte. The process flow is complete, and the process parameters at each stage are reasonably matched. While ensuring the acquisition of high-grade copper-nickel concentrate, it minimizes the loss of valuable metals in the tailings, significantly improving the final copper-nickel recovery rate. The overall technical effect is superior to traditional flotation methods using a single collector or simple mixed reagents.

This invention discloses a green synthesis system for preparing organoalkylsilanes. The system sequentially includes: a reaction unit for mixing silane and olefin, then mixing with a catalyst and heating to react and generate organoalkylsilanes; and a separation and purification unit for separating the organoalkylsilanes and excess olefins from the crude product generated in the reaction unit, obtaining organoalkylsilanes, while the olefins are returned to the reaction unit for recycling. This system uses a continuous catalytic reaction apparatus as its core equipment, realizing the rapid synthesis of organoalkylsilanes from silanes and olefins in the presence of a catalyst without solvents. The subsequent separation and purification unit employs continuous separation operation to purify the organoalkylsilanes to high purity, while excess olefins are returned to the reaction unit for recycling. The entire process system is safe, environmentally friendly, produces minimal waste, and operates with high efficiency.

This invention relates to a high-purity, high-toughness, low-temperature stainless steel and its smelting and preparation methods, belonging to the field of stainless steel metallurgical technology. The smelting method includes electric furnace smelting, refining, vacuum oxygen blowing decarburization, vacuum degassing, and vacuum consumable remelting; the stainless steel ingot contains P≤0.01%, S≤0.001%, and O≤0.0005%. The method employs a synergistic smelting process involving electric furnace, refining, VOD, VD, and VAR, with close integration of each process and reasonable parameter matching, achieving the ultimate removal of P, S, and O. The purity is significantly higher than existing technologies, solving the technical problem of achieving coordinated ultimate removal of S and O in existing processes.