Our mining area in Gia Thanh commune, Gia Vien district, Ninh Binh province which is 15km North of Ninh Binh city by National Route 1A, has:
Exploration area: 11.40ha
Mine reserve: 5,181,712 m3
Exploitation capacity: 176,000m3/ year
Exploitation duration: 30 years
Lime Stone mining process chart:
Lime Stone grinding process chart:
Stone (under 700mm size) is transported by 15 ton dump truck from mine to grinding plant where it is poured directly into vibratory bowl to remove subbase impurities before entering jaw crusher (capacity 300tons/hour). Then crushed stone is delivered to bowl feeder and transferred to classifying screen by conveyor belt.
Stone (over 200mm size) returns to impact crusher and bowl.
Stone (under 10mm size) is transferred to cone crusher where it is grinded then delivered to 0.5mm screen. Stone under screen is put into store while stone above screen returns cone crusher.