Hydrocyclone wear-resistant ceramic liner and preparation method thereof

Abstract

The invention discloses a hydrocyclone wear-resistant ceramic liner and a preparation method thereof. The hydrocyclone wear-resistant ceramic liner is prepared from the following active ingredients in percentage by weight: 2%-8% of yttrium oxide, 2%-10% of aluminum oxide, 14%-20% of carbon fiber, and 65%-80% of silicon carbide. The ceramic liner adopts the technology of rare earth materials of aluminum oxide, yttrium oxide and the like, the low-temperature yttroalumite formed in the sintering process is beneficial to compactness of a silicon carbide liner, and the porosity of the product is reduced; simultaneously taking the large crispness characteristic of the silicon carbide, carbon fibers are added into active ingredients, so that the phenomena of deviating crack propagation, pulling out the fibers and the like can occur under the presence of the carbon fibers, and further the breakage tenacity of the product can be enhanced. The ceramic liner has the characteristics of being low in porosity, good in wear resistance and tenacity, and easy to produce, the service life of a heavy medium hydrocyclone applying the ceramic liner can be prolonged by more than one year which is far longer than three to five months of the conventional corundum liner, so that the service life of the heavy medium hydrocyclone is greatly prolonged; and the hydrocyclone wear-resistant ceramic liner can be widely applied in the field of mining industry and the like having higher requirement on wear resistance.

Description

technical field [0001] The invention relates to a cyclone liner, in particular to a wear-resistant ceramic liner of a dense medium cyclone and a preparation method thereof. Background technique [0002] As the core component of the heavy medium cyclone, the wear-resistant liner is pasted on the inner wall of the heavy medium cyclone with wear-resistant adhesive. When the cyclone is working, the mixture of raw coal, heavy medium and water will cause friction and wear with the inner wall. When the lining is worn to a certain extent or broken, the wear-resistant lining will fail, resulting in failure of the accessory. In severe cases, the whole machine needs to be replaced. In the prior art, the wear-resistant lining boards often used in dense medium cyclones are corundum, cast iron and polyurethane. Polyurethane is used in heavy medium cyclones with a diameter of Φ500mm or more, which will cause serious scratches; cast iron is used in diameters of Φ1000mm or more. The dense m...

AI Technical Summary

Problems solved by technology

In the field of mining, due to the bonding characteristics of its molecular structure, there are fatal weaknesses such as difficult processing, poor toughness, and high brittleness, which seriously affects its application potential as a structural material and limits the application of silicon carbide materials in high-impact fields such as mining. Application, at present, only a small amount of application in fine grinding and classification