Chengde 3000t iron ore dewatering

Case introduction

An iron ore plant in Chengde, belongs to the old line renovation project, 3000t/d iron tailings, 24 hours a day production, tailings concentration of 20%, pulp particle size of more than 100 mesh containing about 70%, with dry discharge sieve can extract more than 85% dry ore, dry discharge tailings water content < 15%, bottom flow settlement can be used to return water, a small part of the tailings into the tailings reservoir. After tailing dry discharge screen can save more than 30% of water resources, increase the storage capacity of tailings reservoir more than 30%, and can protect the slurry pump.

Before the old line renovation project of an iron ore plant in Chengde, many mining industries, under the pressure of national environmental protection, need to dry discharge tailings pulp to respond to national environmental protection policies and avoid hidden dangers brought by tailings ponds. Many mining industries think of the need to invest tens of millions of equipment and civil construction when it comes to tailings dry discharge, because of the large investment in tailings dry discharge and high operating costs, so that many mining industries can not implement the dry discharge process. In fact, as long as the nature of the tailings are understood, for different particle size of the tailings pulp and properties, choose a reasonable dry discharge program, you can minimize the investment in equipment, such as the use of tailings dry discharge screen can achieve the purpose of tailings dry discharge and return water utilization.

Backwater return

Daily treatment amount of tailings (water containing tailings)15000t/d, dry discharge treatment after taking away tailings and water 5000t/d, leaving 10,000 tons of water, the original tailings reservoir can be recovered 50%, according to the current recovery of 80%, more than 30% recovery, tailings dry discharge can save water resources: 15000-5000* (0.8-0.5) =3000 tons/day, calculated according to the water price of 0.8 yuan/ton, 3000*0.8=2400 yuan/day, 300 days a year, 2400*300=720000 yuan, a year can save 720,000 yuan of water resources.

Coarse return

Dry discharge of coarse sand 2550 tons per day, per ton of 10 yuan profit, 300 days of work a year, 2550*10*300= 7650,000 yuan, coarse sand return 7.65 million yuan per year.

Real picture shooting

Scheme characteristics

Technical parameter