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During the magnetic separation process of the magnetic separator, the magnetic drum skin will be constantly impacted by granular iron ore with a temperature of 0 to 15% or less, resulting in serious wear and tear. The phenomenon of magnetic drum skin wear often occurs in the industry. Therefore, the magnetic drum skin of the magnetic separator needs to be strengthened for protection. Test data shows that once the skin of the magnetic drum of the magnetic separator is worn and leaked, the slurry enters the magnetic drum and is adsorbed on the surface of the magnetic system, causing locking between the drum skin and the magnetic system, or the slurry enters the bearings, causing damage to the bearings and destroying the entire equipment. Protection Tips: First of all, in the selected magnetic separator, the magnetic drum must be well protected. The drum skin can be wrapped with PVC coating and sprayed with a wear-resistant layer of polyurethane elastomer. * * Improved barrel skin service life. Spray-on polyurethane elastomer. It can withstand the erosion of acid, alkali, oil, water and other media with a pH value of 3-11. It has excellent anti-corrosion properties and has the characteristics of high resistance to salt spray corrosion and good frost resistance. ; And it has the advantages of high toughness, easy construction, hardening, high strength, good plasticity, resistance to bending fatigue and contact fatigue, high dynamic load performance, not prone to bonding, high strength and wear resistance, corrosion resistance, self-lubricating, etc. At the same time, spray-type polyurethane elastomer is not easy to age, has low friction, and has a wide hardness range (from Shore A30 to Shore D90, it can maintain high elasticity). Spray-type polyurethane elastomer is a new wear-resistant and anti-corrosion polymer material with mature technology that can be widely used in complex working conditions such as sewage treatment, mines, ports, electric power, and coal to enhance the wear resistance and anti-corrosion performance of mechanical equipment. Spray-type polyurethane has excellent wear resistance, anti-corrosion, impact resistance, salt spray corrosion resistance, aging resistance, flexibility and elasticity, and strong adhesion. ; In the immersed state, the wear resistance is 8 times that of carbide steel, 7 times that of vulcanized rubber, and 3 times that of ultra-high molecular polyethylene. ; It also has extremely strong adhesion properties. Different primers and adhesives can be configured according to different substrates. Matching primers and adhesives can be found for all metal and non-metal substrates. ; Construction is also very convenient: Normal temperature is enough, not sensitive to moisture and temperature ; It has no pollution to the environment and does not contain any volatile organic compounds (VOCs). It is a new type of environmentally friendly material. ; Cures quickly at room temperature, catalyst-free ; The color is beautiful, the prototype has good reproducibility, the coating is continuous and dense, no seams, no pinholes, and excellent UV protection. Application areas: ①Automation field: Vibrating feeder wear-resistant, anti-corrosion and noise-reducing coating, conveyor steering plate room temperature curing wear-resistant material, spiral classifier strong adhesion bonding wear-resistant material, conveyor roller wear-resistant and anti-corrosion, robot arm wear-resistant, mold protection, etc. ; ②modern transportation: Street sweepers are lined with wear-resistant materials, fishing boats are surface sprayed, salt/sand tanks and spreader surfaces are wear-resistant and anti-corrosion ; ③energy industry: Various vibrating screens, slurry pumps, magnetic separation drums, magnetic separators, thickeners, flotation machines, pipe linings, elbows, spiral mixers, and chutes anti-corrosion coating materials for mines ; ④Sewage treatment industry: Mixing paddle, filter press, garbage truck ; ⑤Water conservancy industry: Wear-resistant and anti-corrosion for water pumps, valves, transmission pipelines, etc. ; Other industries: Wear-resistant and anti-corrosion of medical equipment, food and chemical equipment, sterile protection in workshops, radiation protection in nuclear power plants, wear-resistant and anti-corrosion of fan impellers in power plants, inner and outer walls of metal containers, pipes and storage tanks in chemical, steel, petrochemical plants, cement plant equipment, garbage disposal equipment, etc. ; In addition to wear resistance and anti-corrosion, spray-type polyurethane elastomer can also be used as a cold vulcanization adhesive material and is widely used in the fields of port belt repair, bonding, and conveyor belt bonding and repair. Secondly, to fix the magnetic system, you can choose to use stainless steel plates to wrap the magnetic fines. The joints at both ends of the stainless steel plate are clamped with thin plates and fixed with bolts. Use bolts to connect and adjust the tension. This not only has little impact on the magnetic field on the surface of the magnetic system, but also has a strong enough wrapping and tightening force on the magnetic system, and the effect is remarkable. The picture below shows the roller without protection and after protection.:
1. Ceramic ab glue is generally used to paste ceramics. We often use this kind of ceramic glue in on-site construction, and the effect is very good. It is non-toxic, odorless and easy to operate. Many power plants and cement plants use this ceramic glue to paste ceramics. 2. Tips for pasting wear-resistant elbows: First, mix the ceramic glue evenly and stir for one minute. Apply evenly on the pipe fitting, and then press the ceramic piece evenly on top. The pasted ceramic piece will not fall off easily and ensure full contact between the AB glue and the ceramic piece steel. Generally, the pasting of ceramic elbows should start from the middle outer arc and extend to both sides to ensure that the ceramic sheets are pasted more smoothly and evenly. In this way, the pasted ceramic sheets are not easy to fall off and have a long service life. The surface must be smooth, the glue must be filled evenly without bubbles, and there must be no protruding wear-resistant ceramic sheets to avoid affecting the flow rate and reducing the wear-resisting performance. 3. Ceramic glue is widely used for pasting wear-resistant ceramic sheets, especially for equipment in thermal power, steel, smelting, machinery, coal, mining and other industries that are subject to severe powder erosion or slurry erosion and wear. It is suitable for the pasting of wear-resistant ceramic sheets under high-temperature working conditions. It is also often used in the primary powder pipe of coal mills in thermal power plants, the primary air powder supply pipes of boiler coal mills, and the outlet powder pipes of coal mills. 4. Precautions for the use of ceramic glue. Strict glue ratio. The ceramic glue must be strictly prepared according to the 1/2 ratio requirement, and stir evenly for 3 minutes to allow the ingredients to blend with each other. The ambient temperature is controlled between 5 and 40°C. If the temperature is too low, the temperature should be increased to the control temperature. Construction in direct sunlight and strong winds should also be avoided to prevent the ceramic sheets from being squeezed and deformed due to thermal expansion and contraction. Strong winds will also seriously affect the bonding strength of the ceramic glue due to dust.