We Claim:
1. A cyclone (100) composed of base material, comprising
inlet (102), vortex finder (104), barrel (106), mid-cone (108), underflow nozzle (110), and transition end (112) having joints;
characterized by
a layer (202) of wear and corrosion resistant material applied over an inner surface of the cyclone (100) to cover the base material; and
at least one protection member (204, 302, 304, 402) suitably profiled to superpose on the base material to protect the base material and joints,
said protection member (204, 302, 304, 402) is applied on surface of the base-material with suitable bonding material to convey the material and separation of said material through the cyclone (100).
2. The cyclone (100) as claimed in claim 1, wherein the wear and corrosion- resistant material is ceramic and/or composites.
3. The cyclone (100) as claimed in claim 1, wherein said protection member (204, 302, 304, 402) is of V-shape, U-shape, solid edge shape and L-shape.
4. The cyclone (100) as claimed in claim 1 to 3, wherein

(a) the V-shape protection member (204) is positioned at inlet entry (102) of the cyclone (100);
(b) the U-shape protection member (304) is positioned at entry area of vortex finder (104) of the cyclone (100);
(c) the L-shape protection member (302) is positioned at inlet top cylindrical portion; and

(d) the solid edge shape protection member (402) is positioned at transition end (112) to convert sharp joints which are in square shape into curve shape.
5. A method for conveying the material and separation of said material in cyclone
(100), comprising the steps of:
applying a layer (202) of wear and corrosion resistant material with suitable bonding material over an inner surface of said cyclone (100), wherein the cyclone (100) composed of base material; and
superposing at least one suitably profiled protection member (204, 302, 304, 402) on the base material to cover the base material and joints, wherein said at least one protection member (204, 302, 304, 402) is applied on surface of the base material with suitable bonding material to convey the material and separation of said material through the cyclone (100).
6. The method as claimed in claim 5, wherein the wear and corrosion-resistant material is ceramic and/or composites.
7. The method as claimed in claim 5, wherein said protection member (204, 302, 304, 402) is of V-shape, U-shape, solid edge shape and L-shape.
8. The method as claimed in claim 5 to 7, wherein the step of positioning said protection member (204, 302, 304, 402) comprises

(a) positioning the V-shape protection member (204) at inlet entry (102) of the cyclone (100) with suitable bonding material ;
(b) positioning the U-shape protection member (304) at entry area of vortex finder (104) of the cyclone (100) with suitable bonding material;
(c) positioning the L-shape protection member (302) at inlet top cylindrical portion with suitable bonding material; and

(d) positioning the solid edge shape protection member (402) on transition end (112) with suitable bonding material to convert sharp joints which are in square shape into curve shape.
9. A protection member (204, 302, 304, 402) for cyclone (100) that conveys the
material and separation of said material through the said cyclone (100),
wherein a layer (202) of wear and corrosion resistant material is applied over the base material of the cyclone (100) with suitable bonding material to cover and protect the inner surface of the cyclone (100), the cyclone (100) composed of base material,
said protection member (204, 302, 304, 402) being suitably profiled to superpose on the base material and joints with suitable bonding material, and wherein said protection member (204, 302, 304, 402) is applied on the cyclone (100) to convey the material and separation of said material through the cyclone (100).
10. The protection member (204, 302, 304, 402) as claimed in claim 9, wherein the wear and corrosion resistant material is ceramic and/or composites.
11. The protection member (204, 302, 304, 402) as claimed in claim 9, wherein the wear and corrosion resistant material is ceramic such as sintered alumina of composition ranging from 70 to 99.8 wt% of alumina material or nitride-bonded SiC or reaction-bonded SiC or sintered SiC or zirconia-toughened alumina lining material.
12. The protection member (204, 302, 304, 402) as claimed in claim 9, wherein the wear and corrosion resistant material is ceramic composites such as SiC or fused/calcined alumina ceramic – metal composites with a composition of 50 to 90 wt% of ceramic in composites.

13. The protection member (204, 302, 304, 402) as claimed in claim 9, wherein the wear and corrosion resistant material is ceramic composites such as SiC or fused/calcined alumina ceramic – metal composites and the metal can be aluminium and its alloys.
14. The protection member (204, 302, 304, 402) as claimed in claim 9, wherein the wear and corrosion resistant material is ceramic and/or composites with suitable bonding material, wherein the bonding material is based on polymeric or ceramic or mechanically bonded on base plate.
15. The protection member (204, 302, 304, 402) as claimed in claim 9, wherein the wear and corrosion resistant material is ceramic and/or composites with suitable polymeric bonding material such as epoxy, silicone and other resins.
16. The protection member (204, 302, 304, 402) as claimed in claim 9, wherein the wear and corrosion resistant material is ceramic and/or composites with suitable ceramic bonding material such as cement which cures at room temperature.
17. The protection member (204, 302, 304, 402) as claimed in claim 9, wherein the wear and corrosion resistant material is ceramic and/or composites with suitable mechanical bonding such as weld-on, dovetail and bevel angled design.
18. The protection member (204, 302, 304, 402) as claimed in claim 9, wherein the protection member (204, 302, 304, 402) is of V-shape, U-shape, solid edge shape and L-shape.
19. The protection member (204, 302, 304, 402) as claimed in claim 9 to 11, wherein
(a) the V-shape protection member (204) is positioned at inlet entry (102) of the
cyclone (100);

(b) the U-shape protection member (304) is positioned at entry area of vortex finder (104) of the cyclone (100);
(c) the L-shape protection member (302) is positioned at inlet top cylindrical portion; and
(d) the solid edge shape protection member (402) is positioned at transition end (112) to convert sharp joints which are in square shape into curve shape.