Method for reducing impurity element nickel in complex multi-element brass alloy

[0019] After the scrap copper raw material is pretreated, it is melted and sampled in an induction furnace, and the Ni content is measured by a direct-reading spectrometer at 0.88%, and 0.25% (percentage by weight) of elemental boron coated with brass foil and slag remover (sodium fluorosilicate and calcium carbonate) are added. Mass ratio 3:1) 1.5% (percentage by weight) was cast after the heat preservation was completed, and the upper and lower ends of the ingot were taken to measure the average value of the direct-reading spectrometer, wherein the Ni content was 0.49%, and the comparison results showed that the nickel content decreased by 44.3%.

[0021] After the pretreatment of waste miscellaneous copper raw materials, they were melted and sampled in an induction furnace, and the nickel content was measured by a direct-reading spectrometer at 0.59%, and 0.2% (percentage by weight) of elemental boron coated with brass foil, slag remover (dolomite, calcium carbonate, hydrogen Calcium oxide, the proportion of which is 6:2:1) 1% (weight percent) is cast after the heat preservation is completed, and the upper and lower ends of the ingot are taken to measure the average value of the direct-reading spectrometer, wherein the Ni content is 0.36%, and the comparison results are calculated. Nickel content fell by 39.9%.