5results about "Lead oxides" patented technology

The application discloses a kind of high oxidation rate lead-zinc oxide ore aerated sulphidation flotation and tailings discharge process, belong to mineral processing technical field.The method includes the following steps: grinding to lead-zinc oxide ore raw ore, obtain slurry;Sodium sulfide is added to slurry, and under the condition of aerated stirring, sulphidation reaction is carried out, and sulphidation slurry is obtained;Collector and foaming agent are added to sulphidation slurry, and flotation is carried out, and lead concentrate and zinc concentrate are obtained.The application introduces forced aerated stirring in the sulphidation process, strengthens the mass transfer process among gas-liquid-solid three phases, promotes the generation of dense, stable lead sulfide film on the surface of lead oxide minerals, solves the problem of low sulphidation efficiency of traditional sulphidation process.The application is used to treat refractory lead-zinc oxide ore containing Pb 5.59%, Zn 44.02%, oxidation rate more than 90%, and closed-circuit test can obtain qualified lead concentrate with lead grade of 60.72% and lead recovery rate of 79.53%, while lead flotation tailings directly become zinc concentrate with zinc grade of 46.33% and zinc recovery rate of 98.41%, realizing efficient separation of lead and zinc and tailings discharge.

The invention provides an indium-lead composite oxide nanowire and a preparation method and application thereof, the atomic ratio of In to Pb in the nanowire is 0.1-10, and the diameter of the nanowire is 10-300 nm. In the invention, the two metal components indium and lead generate a synergistic component effect and are applied to the electrochemical reduction process, so that the adsorption and activation of the raw materials are greatly enhanced. Different valence states of lead and indium are mutually adjusted, and the electronic structure of the catalyst is optimized. Meanwhile, more active sites can be exposed by the nanowire structure, and the reaction kinetics process is effectively improved by the three-dimensionally arranged nanoscale structure.

The present invention relates to a method for forming a large-area perovskite thin film capable of manufacturing a large-area uniform perovskite thin film without using an anti-solvent, a coating agent used therefor, and a perovskite solar cell including the same as a light absorption layer.

The invention provides a method for recovering lead from lead-containing slag and preparing high-activity lead oxide, and belongs to the technical field of resource utilization. The method specifically comprises the following steps: 1, treating the lead-containing waste residues by using an acid solution to remove impurities such as copper and zinc in the lead-containing waste residues, and then carrying out solid-liquid separation to obtain lead-containing solids; 2, dissolving lead in the lead-containing solid by using an alkali solution to obtain a lead-containing solution; 3, adding a precipitant into the lead-containing solution to obtain a lead precipitate; and 4, roasting the precipitated solid to obtain the high-activity lead oxide. The method is simple in technological process, low in equipment requirement, economical and free of pollution, meanwhile, high-activity lead oxide can be prepared, and the lead recovery rate can reach 95% or above.

The invention provides a lead and transparent conductor substrate recycling process and application, and belongs to the technical field of photovoltaics. Comprising the following steps that the perovskite cell is soaked in a first organic solvent, a metal electrode material falls off after a transmission layer material is dissolved, a transmission layer solution and the metal electrode material are obtained through filtering, and the rest part of the perovskite cell is decomposed perovskite cell; transferring the decomposed perovskite cell into a second organic solvent for cleaning to obtain a conductor substrate glass and a lead-containing mixed solution; removing moisture and an organic solvent from the lead-containing mixed solution, and calcining to obtain lead oxide; the conductor substrate glass, the transmission layer organic material and lead oxide are assembled into a battery for reuse; the first organic solvent is at least one of benzenes, alcohols, ketones, chloroform, esters and ethers; the second organic solvent is a chelating agent solution. The process provided by the invention is low in cost and simple to operate, and the photoelectric conversion efficiency of the recovered and assembled battery can still be comparable with that of a primary battery.