Granite Crushing&Screening Plant in Nigeria

• Type: Fixed(mounted on concrete foundation) 
• Max Feeding Size: 600mm
• Final Output Size: 0-1/4”, 1/4”-1/2”, 1/2”-3/4”, 3/4”-1”(cubic shape)
• Capacity: 400TPH

On March 09 of 2013, we received deposit from Andy Group in Lagos. They ordered a complete granite crushing and screening plant, including: 

• 1.Hopper: LC5000x5000/2 sets 

• 2.Grizzly Vibrating Feeder: GZD1100x4200/2 sets 

• 3.Pan Feeder: GZG100-4/2 sets

• 4.Primary Jaw Crusher: PE750x1060/2 sets

• 5.Secondary Single Cylinder Hydraulic Cone Crusher: HST250/2 sets

• 6.Tertiary Vertical Shaft Impact Crusher: VSI5X9532/2 sets

• 7.Vibrating Screen: 3YZS2160/2 sets

• 8.Vibrating Screen: 2YZS1860/4 sets

• 9.Belt Conveyors: 664meters Long

Their project is located in Iwoye. It is to crush granite from 600mm into 1/4”, 1/2”, 3/4” and 1”. Then use vertical shaft impact crusher to shape the final output into cubic pieces, which is better used in road construction. VSI adopts “stone-on-stone” crushing method to decrease wear and tear, effectively reduce production cost. In addition, the surrounding liner can be inverted up and down for use to improve the materials utilization and increase the lifespan by more than 48%.

We loaded and shipped the goods into 2x40'FR+2x20'FR+2x20'OT+16x40'HQ from Qingdao to Lagos.

For the granite on site is very hard, whose Mohs’ Hardness Scale is 6-7, in this plant, we use single cylinder hydraulic cone crusher as secondary crusher, who has more advantages than others:

• 1.Inter-particle crushing works between materials that increase the working life of mantle and bowl liner.

• 2.Provide a more consistent gradation and superior cubic products. Better performance in the construction and sand making field.

• 3.Real-time displays the specification of crushing, hydraulic and lubrication in operation

• 4.It can realize unmanned operation by continuously measuring and automatic setting system.

• 5.Dynamic adjustment of motor power and crusher pressure under working reduces the unnecessary losses made by human error and maximize energy into production.

• 6.The CSS can be adjusted on load.

• 7.The flexible gradation adjustment will save the production cost while increasing the benefits.

• 8.Constant load setting: The CSS will be adjusted automatically according to the changes of the feeding size, moisture and hardness of the material and make sure the load of the crusher is constant.

• 9.Constant CSS setting: Once the CSS is set, the output will be kept by continuously measuring and compensating for crusher liner wear.

• 10.The mantle has basic angel between 53°-56°, which will reduce the influence of the capacity due to the moisture content.

• 11.Design with deeper crushing cavity will optimize single cylinder hydraulic cone crusher with more crushing times and higher efficiency.

• 12.Hydraulic system: The design pressure of the sealing elements is 20MPA, the maximum working pressure is 4MPA. Pressure margin produced by the higher pressure improves the reliability of operation.

• 13.Imported air cooling system avoids the disadvantage of water cooling system, such as lack of water and leakage of water.

• 14.Adoption of international first-class brand controller, such as Winner, Sun, Danfoss, MTS, etc.