A large anti-corrosion stirring paddle and its preparation method

Abstract

The invention discloses an anti-corrosion agitating paddle in a large-scale chemical leaching tank and a preparation method thereof. The large-scale anti-corrosion agitating paddle disclosed by the invention comprises an agitating shaft, an agitating vane and a wheel hub. The technical scheme of the invention is as follows: the thickness of the agitating vane is 60-90mm; no gap exists in the joint of the root of a blade and a wheel hub rack; and the agitating paddle is molded by adopting anti-corrosion material plaster, thereby forming an anti-corrosion runner without a vortex liquid. When an arc-shaped vane is horizontally arranged, the open liquid surfaces of the blade, namely two sides of the blade from the tail of the blade to the middle part of the blade and from the root to a horizontal plane form oblique angles which are not equal; the plane of the blade formed from two side bottom lines of the blade and the horizontal plane are arranged on the agitating shaft in a tilting manner; and the bottom plane and the horizontal plane of a straight plate blade are arranged on the agitating shaft in a tilting manner. The large-scale anti-corrosion agitating paddle disclosed by the invention has the advantages of good vortex liquid diversion, great propulsion, good agitating effects, short leaching time, long service life and suitability for the large-scale chemical leaching tank with the volume of 150-500m<3>.

Description

technical field [0001] The invention belongs to the technical field of stirring paddles, and in particular relates to an anti-corrosion stirring paddle used in a large-scale chemical leaching tank and a preparation method thereof. Background technique [0002] Usually, in the electrochemical industry, the requirements for the stirring paddles used in large-scale leaching tanks such as manganese dioxide, manganese metal, electrolytic copper and electrolytic aluminum are relatively high. Corrosion resistance, high temperature resistance and other requirements. The current stirring blades, hubs, and shafts are roughly divided into three categories: one is made of titanium 316L and stainless steel, including various diversion and structural shapes, but the thickness of the blades is generally only 15-20mm. Desoldering, fast wear in case of strong corrosion, large convex and concave joints between blades and hub frame, easy to generate large vortex liquid, seriously affecting pr...

AI Technical Summary

Problems solved by technology

The current stirring blades, hubs, and shafts are roughly divided into three categories: one is made of titanium 316L and stainless steel, including various diversion and structural shapes, but the thickness of the blades is generally only 15-20mm. Desoldering, fast wear in case of strong corrosion, large convex and concave joints between blades and hub frame, easy to generate large vortex liquid, seriously affecting propulsion or lifting force, and high cost, short service life, poor stirring effect, and long leaching time The second type is made of various rubber plastics. The convex and concave joints are prone to leakage due to rebound force and fission when the temperature difference is large, and are easy to burn when high temperature and strong corrosion. , The connection between the paddle and the hub frame produces large vortex fluid, poor flow diversion, small propulsion, poor stirring effect, and long leaching time; the third type is made of anti-corrosion materials, such as phosphorus flakes, epoxy, KPI clay, furan, Phenolic FRP, in high temperature, strong corrosion, and long-term stirring, wears quickly, has poor coefficient of thermal expansion and contraction, difficult construction, long maintenance period, short service time, large vortex liquid, poor flow diversion, small propulsion, and poor stirring Poor effect, long leaching time

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