163results about How to "Realize industrialized continuous production" patented technology

The invention discloses a method for extracting scandium and other rare earth from zirconium oxychloride acid pickle. The method comprises the following steps that (1), the zirconium oxychloride acid pickle is subjected to floculation adsorption slag removing, scandium element enrichment, acid modulation and impurity removing, scandium element purification and rare earth recycling, and high-purity scandium strip liquor and extraction raffinate containing rare earth are obtained; (2), the high-purity scandium strip liquor is subjected to oxalic acid precipitation and high-temperature calcination to prepare high-purity scandium oxide; and (3), the extraction raffinate containing the rare earth is subjected to precipitation zirconium removing, extraction iron removing and carbonate adding reactions to obtain rare earth carbonate. The method belongs to the technical field of hydrometallurgy and waste acid treatment and comprehensive utilization. According to the method, the high-purity scandium oxide powder with the grade being above 99.9% can be obtained; and meanwhile, the other rare earth is recycled in a manner of rare earth carbonate enriched products, the total recycling rate of the rare earth is larger than 80%, the investment is small, the manual requirement is small, the handling capacity is large, and industrial continuous production can be achieved.

The invention discloses an easy-cutting high strength zinc alloy. Most of current Zn-Al series alloys have the defects of poor cutting performance, inter-granular corrosion tendency, low dimensional stability, low working temperature, poor creep resistance, poor corrosion resistance and the like. The zinc alloy is characterized by comprising the following components in percentage by weight: 1 to 25 percent of aluminum, 0.5 to 3.5 percent of copper, 0.005 to 0.3 percent of magnesium, 0.01 to 0.1 percent of manganese, 0.005 to 0.15 percent of bismuth or / and 0.01 to 0.1 percent of antimony, no more than 0.05 percent of impurities and the balance of zinc. The strength of the zinc alloy can be effectively improved; the zinc alloy has good cutting performance and certain plastic processing performance; the raw materials are cheap, easily obtained and environment-friendly; and the zinc alloy is an ideal material for replacing current domestic lead-containing brass and partial stainless steelparts.