6 results about "Ionic copper" patented technology

The utility model discloses a system for removing copper from tin melting liquid. The system comprises a cooling device for treating the tin melting liquid, a filtering device for treating the tin melting liquid treated by the cooling device, and an electro-deposition device for performing electrochemical treatment on the tin melting liquid treated by the filtering device to remove copper. According to the copper removal system, elementary substance copper and ion copper in the tin melting liquid are removed through a physical method and an electrochemical method, the purity of the tin melting liquid can be guaranteed, the service life of the tin melting liquid is prolonged, the use cost of the tin melting liquid is reduced, and the follow-up sewage treatment difficulty is reduced; meanwhile, the uniformity and the quality stability of the tin melting process can be improved, the product quality is improved, and pollution diffusion caused by the fact that copper enters the follow-up process along with flowing of tin melting liquid is avoided; and elementary substance copper obtained through separation and electro-deposition of the tin melting liquid copper removal system can be recycled in a centralized mode, material waste is reduced, and meanwhile economic benefits can be generated.

The invention relates to the technical field of printed circuit boards, in particular to light-color copper surface coarsening liquid as well as a preparation method, a use method and application thereof. The light-color copper surface roughening liquid comprises the following components in mass concentration: 80-160 g / L of inorganic acid, 40-60 g / L of chloride ions, 15-30 g / L of copper ions, 0.8-1.2 g / L of polyethylene glycol, 1-2 g / L of a roughening agent and the balance of water. The molecular weight of the polyethylene glycol is 800 to 1500. According to the scheme provided by the invention, through the synergistic effect of the inorganic acid, the polyethylene glycol and the coarsening agent, the light-color copper surface is obtained, and meanwhile, the high adhesive force of the copper surface and the solder resist ink is ensured.

The invention discloses a preparation method for preparing an F and La co-doped copper modified reduced titanium dioxide photocatalyst by adsorbing fluorine ions and copper ions at normal temperature and application of the F and La co-doped copper modified reduced titanium dioxide photocatalyst, the preparation method comprises the following steps: S1, mixing and calcining titanium dioxide microspheres, sodium borohydride and La2O3, cooling, washing and drying to obtain a La / TiO2-x composite material; s2, putting the La / TiO2-x composite material into fluorine-containing wastewater, and adsorbing fluorine ions at room temperature; s3, performing ultrasonic treatment, centrifugation, washing and drying on the material obtained in the step S2, and calcining to obtain an F-La / TiO2-x composite material; s4, carrying out a reaction on the F-La / TiO2-x composite material and 3-aminopropyltriethoxysilane, and then, carrying out centrifugal separation, washing and drying, so as to obtain an F-La / TiO2-x-NH2 composite material; and S5, adding the F-La / TiO2-x-NH2 composite material into copper-containing wastewater to adsorb copper ions, and then carrying out centrifugal separation, washing, drying and low-temperature calcination to obtain the F-La / TiO2-x-NH2-Cu photocatalyst. The obtained catalyst is excellent in performance.

The application provides a method for treating industrial wastewater by homogeneous catalytic wet oxidation, and a catalyst used in the method is a complex soluble transition metal salt, wherein cerium ions are used as a main catalyst, and one or more of cobalt ions, copper ions, manganese ions, iron ions and cadmium ions are used as auxiliary catalysts. Through cooperation of the main catalyst and the auxiliary catalyst, the COD removal rate of the wastewater reaches more than 99%. The method has a short reaction residence time and high wastewater treatment efficiency, and can be widely used in industrialized catalytic wet oxidation treatment of high-concentration COD wastewater.

This invention belongs to the field of aquaculture technology, specifically relating to a biomass ash, its preparation method, and its application. The biomass ash is the ash obtained after burning biomass raw materials, containing phosphate ions, potassium ions, copper ions, manganese ions, iron ions, zinc ions, magnesium ions, and calcium ions. The preparation method of the biomass ash includes air-drying, pulverizing, and granulating the biomass raw materials, then burning them at 600–800 °C for 60–120 minutes under oxygen-supplied conditions, followed by sieving to obtain the biomass ash. This biomass ash is placed in permeable bags and suspended in the water body for giant freshwater prawn farming to achieve slow ion release; it can also be used in conjunction with quicklime during the pond drying stage to establish a two-stage mineralization system. This invention can achieve a comprehensive, continuous, and stable replenishment of multiple ions in the water body, effectively improving the molting success rate of giant freshwater prawns and realizing the resource utilization of waste.

A precipitation method for a heavy metal solution. Cations in the heavy metal solution include nickel ions, cobalt ions, copper ions, zinc ions, and manganese ions. The precipitation method comprises: step S100, performing a manganese conversion reaction on an alkaline substance using a solution containing manganese ions to obtain a converted manganese precipitate; step S200, performing a stabilization reaction on the converted manganese precipitate using a stabilizer to obtain a stabilized manganese precipitate; step S300, adding the stabilized manganese precipitate to a heavy metal solution for a precipitation reaction to obtain a precipitate slurry; step S400, continuously performing solid-liquid separation on the precipitate slurry to obtain a heavy metal precipitate and a manganese-containing solution; and step S500, performing an oxidation precipitation reaction on raw materials comprising the manganese-containing solution, an oxidizing agent, and an alkaline solution to obtain a post-precipitation solution and a manganese product. The method solves the problems in the precipitation of heavy metals from heavy metal solutions, such as poor settling and filtration performance of precipitated products, high moisture content of precipitated products, and low precipitation efficiency.