4results about How to "Expand product range" patented technology

The invention discloses a waste lithium iron phosphate black powder treatment method, which comprises: 1) carrying out acid leaching on lithium iron phosphate black powder to obtain a leaching solution; (2) Cu and Al are removed from the leachate, and impurity-removed liquid is obtained; (3) carrying out electrolytic reaction by taking the impurity removal liquid as cathode liquid to obtain crude electrolytic iron at a cathode; (4) adding a first precipitator into the electrolyzed barren solution to adjust the pH value, and carrying out solid-liquid separation after reaction to obtain a lithium-precipitated solution and lithium phosphate; (5) adding a second precipitant into the lithium-precipitated liquid, and carrying out solid-liquid separation after reaction to obtain phosphate slag; and 6) reacting acid with the phosphate slag, and carrying out solid-liquid separation to obtain phosphoric acid. According to the method disclosed by the invention, iron, lithium and phosphorus in the waste lithium iron phosphate positive electrode black powder are respectively recovered and prepared into iron powder, lithium phosphate and phosphoric acid, so that the recovery direction and the product type are expanded. Moreover, all-element recovery and resource treatment of the waste lithium iron phosphate positive electrode black powder are realized, and the environmental protection pressure is effectively relieved.

The application discloses a product matching method and device, electronic equipment and a storage medium, and relates to the technical field of product matching. The method comprises the following steps: obtaining historical comment information of a user and product introduction information of a product to be matched; determining user granularity features in the historical comment information and product granularity features in the product introduction information according to a preset granularity; and fusing the user granularity features and the product granularity features to determine the matching degree of the product to be matched and the user. The application can improve the accuracy of user feature extraction, enhance the precision of user demand and interest preference, expand the product range, improve the matching degree of the product and the user, and improve the user experience.

The utility model discloses a device for producing industrial white oil by hydrocracking diesel oil. Comprising a hydrocracking device and a fractionating tower, the hydrocracking device comprises a hydrofining reactor and a cracking reactor which are sequentially connected in series, the outlet of the cracking reactor is communicated with the inlet of a stripping tower, the bottom of the stripping tower is connected with the inlet of the fractionating tower, the number of tower plates of the fractionating tower is 50-60, and the inlet is formed in the 30th-32th tower plates of the fractionating tower. A cooling device is arranged at the top of the fractionating tower, a reboiling device is arranged at the bottom of the fractionating tower, and the side wall of the 27th-29th layer of the fractionating tower is communicated with the cracking reactor through a pipeline; a white oil outlet is formed in the bottom of the fractionating tower. The purposes of increasing the flash point, reducing the aromatic hydrocarbon content and improving the viscosity of the tail oil of the diesel oil hydrocracking device are achieved, the tail oil can serve as a 5 # white oil blending component, the product variety is increased, the product additional value is high, and the product income of enterprises is increased.

The utility model discloses a four-color progressive sheet, which is formed by compounding a substrate and color layers, the substrate is divided into nine grid areas according to a nine-square grid, upper color layers are formed on the first to third grid areas, lower color layers are formed on the seventh to ninth grid areas, left color layers are formed on the first, fourth and seventh grid areas, and right color layers are formed on the third, sixth and ninth grid areas. The upper color layer and the left color layer coincide in the first grid, the upper color layer and the right color layer coincide in the third grid, the lower color layer and the left color layer coincide in the seventh grid, the lower color layer and the right color layer coincide in the ninth grid, and the fifth grid of the Sudoku keeps the color of the substrate. According to the utility model, the color change distribution is uniform, the shading effect is good, the use effect is good, the tailoring is easy, and the appearance is attractive.