A wear-resistant stirring blade for mixing phosphate rock slurry media

Abstract

A wear-resistant agitator blade for mixing phosphate rock slurry includes a blade body with a wear-resistant layer laser-clad on the flow-facing edge. The outer arc edge of the wear-resistant layer is beveled, and the wear-resistant layer thickness is 3-5 mm. This invention achieves an optimal balance between cost and performance through the wear-resistant design of the flow-facing edge, significantly extending the service life of the agitator blade in high-solids-content media, and substantially reducing equipment maintenance frequency and related costs. It demonstrates significant technological advancement and social and economic benefits.

Description

Technical Field

[0001] This utility model relates to the field of mixing equipment technology, and in particular to a wear-resistant mixing blade for mixing phosphate rock slurry media. Background Technology

[0002] During the mixing process of phosphate rock slurry, the slurry contains high-hardness apatite particles (Mohs hardness 5~5.5) and acidic / alkaline media, which causes conventional metal agitator blades to wear rapidly due to high-speed particle impact (local flow velocity >4m / s) and electrochemical corrosion, especially in the upstream side area. This results in a service life of only 1-3 months, requiring replacement and scrapping, which seriously affects production efficiency and increases maintenance costs. Therefore, there is an urgent need to further improve and innovate the design of existing agitator blades to meet current needs. Utility Model Content

[0003] In view of the above situation and to overcome the defects of the prior art, the purpose of this utility model is to provide a wear-resistant stirring blade for mixing phosphate rock slurry media, which can effectively solve the problem of severe wear in the frontal side area of ​​the stirring blade.

[0004] To achieve the above objectives, the technical solution provided by this utility model is a wear-resistant stirring blade for mixing phosphate rock slurry, comprising a blade body, wherein the upstream edge of the blade body is laser-coated with a wear-resistant layer, the outer arc edge of the wear-resistant layer is inclined, and the thickness of the wear-resistant layer is 3~5mm.

[0005] This invention achieves the best balance between cost and performance through the wear-resistant design of the front edge, significantly extending the service life of the stirring blades in high solids content media, greatly reducing the frequency of equipment maintenance and related costs, and demonstrating significant technological progress and social and economic benefits. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the structure of this utility model.

[0007] Figure 2 This is a side view of the structure of this utility model. Detailed Implementation

[0008] The specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings and specific circumstances.

[0009] As shown in the accompanying drawings, a wear-resistant stirring blade for mixing phosphate rock slurry includes a blade body 1, wherein the upstream edge of the blade body 1 is laser-clad with a wear-resistant layer 2, the outer arc edge 3 of the end of the wear-resistant layer 2 is inclined, and the thickness of the wear-resistant layer 2 is 3~5mm.

[0010] To ensure better implementation results, the wear-resistant layer 2 is an Fe-Cr-B-Si composite metal layer.

[0011] The wear-resistant layer 2 has several pits etched on its outer surface (not shown in the figure). The pits are 50 μm in diameter, 20 μm in depth, and 200 μm apart from each other.

[0012] Furthermore, the recessed design can effectively reduce the flow resistance on the front side.

[0013] The angle between the arc edge 3 and the top surface of the wear-resistant layer 2 is 110-140°.

[0014] Furthermore, the design of the arc edge 3 can effectively guide the flow of phosphate rock slurry media, reducing damage to the wear-resistant layer 2.

[0015] In the actual production of this invention, a Fe-Cr-B-Si composite metal layer is laser-clad on the upstream edge of the blade body 1 to improve the hardness of the upstream edge.

[0016] This utility model features a scientifically sound and reasonable design. Compared with existing technologies, it has the following advantages by laser-coating a wear-resistant layer on the flow-facing edge of the stirring blade:

[0017] 1) By using wear-resistant lining design on specific parts (front side), the best balance between cost and performance is achieved, which significantly extends the service life of the stirring blades in high solid content media. According to tests, the manufacturing cost only increases by 5%, but significantly improves the service life of the product to 8-12 months.

[0018] 2) It significantly reduces the frequency of equipment maintenance and related costs, and solves the technical problems of easy wear and frequent replacement of agitator blades in existing technologies. According to practical application verification, based on a single agitator blade costing 2,000 yuan and each equipment equipped with 6 blades (total value of 12,000 yuan), the annual blade replacement cost can be reduced by 36,000 yuan. At the same time, the number of maintenance times is reduced by 3-4 times per year, and the comprehensive cost savings in hoisting, maintenance and other expenses can reach 100,000 yuan, which has significant social and economic benefits.

Claims

1. A wear resistant mixing blade for mixing of phosphate ore slurry medium, comprising a blade body, characterized in that, The blade body (1) is laser-coated with a wear-resistant layer (2) on the front edge. The arc edge (3) outside the end of the wear-resistant layer (2) is inclined. The thickness of the wear-resistant layer (2) is 3~5mm.

2. The wear-resistant stirring blade for mixing phosphate rock slurry media according to claim 1, characterized in that, The wear-resistant layer (2) is an Fe-Cr-B-Si composite metal layer.

3. The wear-resistant stirring blade for mixing phosphate rock slurry media according to claim 1, characterized in that, The wear-resistant layer (2) has several pits etched on its outside. The pits are 50 μm in diameter and 20 μm in depth, and the distance between two adjacent pits is 200 μm.

4. The wear-resistant stirring blade for mixing phosphate rock slurry media according to claim 1, characterized in that, The angle between the arc edge (3) and the top surface of the wear-resistant layer (2) is 110-140°.

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