Abstract: A method for preparing carbon black from pyrolysis char of waste tires by a molten salt thermal treatment and a product thereof are provided. The method includes heating one or two groups of a metal chloride salt group and a metal sulfate group to obtain a molten salt; adding pyrolysis char of waste tires into the molten salt and subjecting same to a molten salt thermal treatment under a preset reaction atmosphere; after the reaction is complete, separating the reaction product to obtain a secondary molten salt and treated pyrolysis char, washing the treated pyrolysis char with hot water and then drying same so as to obtain carbon black, and at the same time, recycling the secondary molten salt.

Abstract: The disclosure relates to a method and an apparatus for loading a picture. A target page element is obtained. A motion state of the target page element is obtained. A to-be-loaded picture carried by the target page element is obtained. The to-be-loaded picture is added to a to-be-loaded queue based on the motion state being a scrolling state. The to-be-loaded queue is configured to monitor the to-be-loaded picture based on a change of the motion state. The to-be-loaded picture is added to a loading state based on the motion state changing to a non-scrolling state.

Abstract: The disclosure relates to a method and an apparatus for loading a picture. A target page element is obtained. A motion state of the target page element is obtained. A to-be-loaded picture carried by the target page element is obtained. The to-be-loaded picture is added to a to-be-loaded queue based on the motion state being a scrolling state. The to-be-loaded queue is configured to monitor the to-be-loaded picture based on a change of the motion state. The to-be-loaded picture is added to a loading state based on the motion state changing to a non-scrolling state.

Abstract: A method for preparing carbon black from pyrolysis char of waste tires by a molten salt thermal treatment and a product thereof are provided. The method includes heating one or two groups of a metal chloride salt group and a metal sulfate group to obtain a molten salt; adding pyrolysis char of waste tires into the molten salt and subjecting same to a molten salt thermal treatment under a preset reaction atmosphere; after the reaction is complete, separating the reaction product to obtain a secondary molten salt and treated pyrolysis char, washing the treated pyrolysis char with hot water and then drying same so as to obtain carbon black, and at the same time, recycling the secondary molten salt.

Abstract: The present invention directs to a method of manufacturing low water peak single mode optical fiber, which comprises performing deposition in a substrate tube using PCVD technology, whereby a deposited layer of a certain construction design is formed on the inner wall of the substrate tube, melt contracting the substrate tube into a solid core rod according to melt contraction technology, producing an optical fiber preform by combining the core rod and a jacket tube of low hydroxyl content by means of RIT technology or by depositing an outer cladding on the outer surface of the core rod using OVD technology, sending the optical fiber preform into a fiber drawing furnace to draw it into an optical fiber, wherein: in the PCVD technology, the content of impurities in a gas mixture of raw materials, which is characterized by the infrared spectrum transmissivity thereof, is required to a transmissivity of 90% or greater, the water content in O2 is 100 ppb or less, the water content in C2F6 is 1000 ppb or less, the