9results 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 use of a lead (IV) containing compound e.g. PbO2 to prepare a lead chalcogenide nanocrystal wherein the lead (IV) constitutes at least 50 molar% of all the lead present in the a lead (IV) containi

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.

To provide novel electromagnetic wave absorbing particles.SOLUTION: Provided are electromagnetic wave absorbing particles containing a composite oxide, wherein: the composite oxide contains element A, which is one or more elements selected from Group 11 elements, and element B, which is Pb; and when the mole number of the element A and the mole number of the element B contained in the composite oxide are denoted by x and y, respectively, the following relation is satisfied: 0.001≤x / y≤10.SELECTED DRAWING: None

A cooling system for a ball mill used for production of a lead oxide is disclosed. The system has an internal nozzle configured to introduce water into an interior of a rotating ball mill drum, and a water conduit on an exterior of the rotating drum and configured for external water delivery so as to deliver water on the drum exterior. A control system may also be provided for control of the cooling system. A method is also disclosed.

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.

A cooling system for a ball mill for producing lead oxide is disclosed. The system has: an internal nozzle configured to introduce water into an interior of a rotating ball mill drum; and a water conduit on the exterior of the rotating drum and configured for external water delivery to deliver water onto the exterior of the drum. A control system for controlling the cooling system may also be provided. A method is also disclosed.