In bulk material handling industries, like steel mill, cement plant, thermal power plant, mining etc ,different kinds of chutes can be found for conveying coal,cement,alumina,sinter dust and other aggregate materials from one transport unit to another.
1. Chute Definition
Chutes are flat plates, having relatively smooth transferring surface, arranged at different angles to transfer or guide materials along the chute under force of gravity. Many types of chutes exist,According to the force of the ore particles, they can be divided into gravity chutes and centrifugal chutes, If classified by the selected particle size,they can be divided into coarse chutes, ore chutes and slime chutes.
2. Chute Design Consideration
It is important that a chute is designed correctly to ensure the efficient transfer of bulk solids without spillage and blockages and with minimum chute and belt wear. The importance is accentuated with a trend towards higher conveying speeds and ever increasing throughputs. Some common defects in the use of chutes, such as poor material flow, short service life, too much noise, large impact on downstream equipment, leakage, etc. need to be considered during chute structural design and material selection.
3. Chute Lining consideration
Chute liner material choice is an essential step during design consideration. reasons for install chute lining as follows:
3.1.1 To protect the chute structure from abrasion,erosion, temperature imposed by the product.
3.1.2 To protect the product from damage by the chute due to chemical reaction or mechanical damage by the chute.
3.1.3 To increase or reduce friction or otherwise change the velocity of the product.
3.1.4 To process the product during transit along the chute.
4. Chute Lining Selection principle
The selection guide for lining solutions is divided into three sections: wear improvements, flow improvements and noise reduction. Your choice principle will be based on processing conditions, material ,size, shape, drop height, volume, angle of impact,temperature etc.
5. Different Materials for Chute Liner
5.1 Rubber Chute Liner : This is most common material as wear resistant lining,Which may be adhered in sheets or be vulcanized. It is better choice to absorbing noise during conveying materials, but not fit for small particle materials in wet working environment or materials with high temperature .
5.2 Hard Metal Lining of Chutes : Another wear protective linings used popularly . Which include Manganese steel, high chrome steel Chrome molybdenum steels etc. They are characterized by good impact resistance, high temperature resistance, corrosion & wear resistance and easily to be Cutted , bent or crimped, welded and punched.but it is also a heavy and costly choice .
5.3 Alumina Ceramic Chute Liner : ceramic liner tiles have wide types for choice, like alumina ceramic plain tile , welding tile, rubber ceramic wear liner etc. Which kind of applied ceramic liner depends on different working environment including temperature, impact strength etc.
5.3.1 Alumina Plain Tile : it is installed by epoxy resin directly which provides a high shear strength and good resistance to chemical or moisture attack and ageing. Standard sizes or ceramic cutting tiles can be supplied by China ceramic manufacturer like Chemshun Ceramics.
5.3.2 Ceramic Welding Tile : It provides excellent abrasion and impact resistance for industrial friction equipment. Is installed by epoxy resin and welding double ways. best wear resistant choice for dynamic operation equipment.
5.3.3 Rubber Backed Ceramic Wear Plate : a combination of wear resistant alumina ceramics vulcanized in resilient rubber sheet. Which has super wear resistance and impact resistance property from rubber and ceramics. Ceramic shapes can be vulcanized in current market mostly including ceramic cylinder, alumina hexagonal tile, square mosaic tile , ZTA ceramic tile etc .typical ceramic supplier factory like Chemshun Ceramics Company. Rubber ceramic wear liner is mainly installed by welding bolt. good choice as mining chute liner.
6.Maintenance & Replacement of Chute Liner
Chute linings are subject to wear. Sooner or later the liner material will have to be replaced.different chute wear liner materials have different replacement & maintenance ways. Generally good access with enough room for maintenance man should be carefully considered when chute design.
7.How to Install Ceramic Chute Liner
Step 1: Prepare special designed alumina chute tiles and epoxy resin and other tools
Step 2：Install alumina tiles with epoxy resin adhesive in the inner wall of chute
Step 3: Remove the extra epoxy resin with tools and lightly hit the ceramic liner tile with hammer for air removal
What are the characteristics of abrasion-resistant ceramic tiles? Abrasion-resistant ceramic tiles are widely used in many projects, in the pit furnace is also built with a wear-resistant ceramic tiles, wear-resistant ceramic tiles not only to fire resistance, high temperature requirements, but also to wear requirements, Introduce the impact of wear-resistant ceramic tile wear-resistant factors which have! Abrasion resistance of abrasion-resistant ceramic tiles depends on the composition and structure of wear-resistant ceramic tiles. When the abrasion-resistant ceramic tiles are composed of dense polycrystals composed of single crystals, the wear resistance depends on the hardness of the mineral crystals. High hardness, high wear resistance of the material. When the mineral crystals are non-isotropic, the grain size is small and the wear resistance of the material is high. When the material from the multi-phase composition, the wear resistance of the material ...
The shape of ordinary wear-resistant ceramic tiles is a square sheet structure, and they are arranged in rows and columns. There are linear seams between the rows and columns of wear-resistant ceramic sheets. The linear seams along the direction of fluid flow are A smooth fluid scouring gap is formed. In addition to the normal wear of the fluid on the surface of the wear-resistant ceramic sheet, the erosion gap becomes a breakthrough door for the fluid to wear the side of the ceramic sheet. Under the long-term erosion of the fluid, the seam will gradually widen and the degree of wear will become more and more serious. , the change of connection affects the service life of the wear-resistant ceramic sheet, which in turn affects the protection effect of the anti-wear parts. After this kind of wear-resistant ceramic sheets are pasted, the adjacent ceramic sheets do not have an interlocking effect with each other. The pasting is not strong during installation...
Al2O3 wear resistant ceramics as lining of mill and grinding medium, in the construction of sanitary ceramics and other industries has become more and more widely applied. Use material of Al2O3 content is between 90% ~ 99% commonly, in order to produce high density, good wearability ceramic body, must have a suitable raw material performance, forming method can obtain high green density and must have the appropriate sintering temperature and holding time, only the three elements meet the requirements at the same time, in order to achieve this purpose. Chemshun company has been working hard to develop, research, innovation design is most suitable for customer requirements of high alumina wear resistant ceramic products.
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