Abstract: Disclosed is a filtering device. The device includes a main body part and a filter element assembly, where the main body part has a mounting cavity for accommodating the filter element assembly, further includes a base and a screen cover arranged as a cover of the base, and at least one rack for fixing the filter element assembly is disposed on an inner wall of the screen cover and/or the base; and the filter element assembly includes a folded filter element arranged in a folded shape, and a rubber strip arranged on the folded filter element for maintaining the shape of the folded filter element to facilitate quick assembly and disassembly of the folded filter element. Further, the screen cover and the base are connected through various snap-fit assemblies, without requiring additional connecting members for fixing them, which is convenient for disassembly and assembly, and has a simple structure.

Abstract: A method for selectively metallizing a surface of a ceramic substrate, a ceramic product and use of the ceramic product are provided.

Abstract: A tailings recovery process comprises: feeding ore pulp into a concentration barrel of a concentrating machine; driving the concentration barrel to rotate around its own central axis while the ore pulp flows, so as to enable the ore pulp to be continuously stirred and turn over in inner cavity of the concentration barrel; applying a magnetic field to the ore pulp by means of a magnetic field generation device; accurately sorting the ore pulp by means of a classifier, so as to enable selected minerals in the ore pulp to be exposed under the action of the magnetic field in processes of rising and dropping, thus attaching to an inner wall of the concentration barrel and moving upwards until reaching a collecting area; by making the selected minerals fall into a material receiving trough of the concentrating machine in the collecting area, enabling other materials in the ore pulp except the selected minerals to enter into a tailings trough of the concentrating machine at the bottom of the inner cavity of the conc

Abstract: A method for selectively metallizing a surface of a ceramic substrate, a ceramic product and use of the ceramic product are provided.

Abstract: A tailings recovery process comprises: feeding ore pulp into a concentration barrel of a concentrating machine; driving the concentration barrel to rotate around its own central axis while the ore pulp flows, so as to enable the ore pulp to be continuously stirred and turn over in inner cavity of the concentration barrel; applying a magnetic field to the ore pulp by means of a magnetic field generation device; accurately sorting the ore pulp by means of a classifier, so as to enable selected minerals in the ore pulp to be exposed under the action of the magnetic field in processes of rising and dropping, thus attaching to an inner wall of the concentration barrel and moving upwards until reaching a collecting area; by making the selected minerals fall into a material receiving trough of the concentrating machine in the collecting area, enabling other materials in the ore pulp except the selected minerals to enter into a tailings trough of the concentrating machine at the bottom of the inner cavity of the conc

Abstract: A method for metallizing a surface of a ceramic substrate includes molding and sintering a ceramic composition to obtain the ceramic substrate, in which the ceramic composition comprises a ceramic powder and a functional powder dispersed in the ceramic powder, radiating a predetermined region of the surface of the ceramic substrate, and performing chemical plating on the ceramic substrate.