3results about How to "Downgrade" patented technology

The utility model relates to the field of scroll compressor, concretely is a kind of built-in two-stage oil separation component, for scroll compressor, the scroll compressor includes first exhaust port, including exhaust chamber, primary separation unit and secondary separation unit, the primary separation unit inside is barrel, and the secondary separation unit inside is barrel with smaller open end;The open end inner diameter of primary separation unit is less than the inner diameter of secondary separation unit bottom end, and the open end of primary separation unit and the open end of secondary separation unit are communicated.The utility model forms the flow rate of gas greater than the flow rate of tiny oil droplet by primary separation unit, forms the flow rate of gas less than the flow rate of tiny oil droplet by secondary separation unit, and oil-gas mixed gas is separated continuously two times, greatly improves oil-gas separation efficiency.

The present application relates to a kind of tailings classification scanning device, belong to mineral separation technical field.The device includes: tailings separation unit, with the separation cylinder upper end of mineral separation equipment is connected or with separation cylinder, including tailings overflow weir, configured to discharge tailings in the separation cylinder from the tailings overflow weir;Tailings classification unit is arranged in the periphery of the tailings separation unit, including tailings classification overflow weir, configured to discharge the tailings classified processing, to obtain tailings of different levels;The height value of the tailings classification overflow weir is less than the height value of the tailings overflow weir.The present application can realize the multistage separation of tailings, to obtain different grade and the stable component content of tailings, to reduce the waste of mineral resources, improve the component content qualified rate of each grade product.

This invention belongs to the field of iron and steel metallurgical refining technology, specifically relating to a method for treating inclusions in heavy rail steel using tellurium or calcium tellurium composite treatment. To reduce the Class A inclusion rating of heavy rail steel, this invention provides a method for treating inclusions in heavy rail steel using tellurium or calcium tellurium composite treatment. This method involves performing tellurium or calcium tellurium composite treatment during RH refining to improve the morphology of sulfides in the heavy rail steel. The tellurium or calcium tellurium composite treatment process employs inert gas soft blowing to enhance the circulation of molten steel in the ladle, thereby improving the effect of the tellurium or calcium tellurium composite treatment, reducing the Class A inclusion rating, and improving the machinability of the steel.