Reagent Adding System Optimization Of Kunyang,3 Million T/a Column Flotation

Kunyang flotation plant 3 million t/a column combined process,the treatment is calcareous phosphate rock,using a single reverse flotation process.Reverse flotation out of carbonate journals to enrich the useful minerals,the process is a rough and two fine,anti-rough using four?4.5m×12m straight-type flotation column in parallel,anti-fine with four sets of 130m3flotation machine in series.Technology of adding the system,the original design of a flotation column has two dosing points,that is a single series of 8 mixing bucket.In November 2011,the plant began to run the test drive,and in mid-2012,it began to send qualified phosphorus concentrate downstream.The kunyang column series principle process flow includes:the mill is two sections of closed-circuit mill,the flotation is a rough selection of a selected part of the mine to return the crude selection process.A series of flotation process in kunyang series is four parallel flotation columns,a single flotation column corresponds to two medicament mixing bucket,dosing points,high consumption of pharmaceuticals.Compared with the flotation series,the flotation column sorting efficiency is low.In addition,the pulp distributor is not uniform,6 mixing bucket prone to run drip serious,resulting in poor site environment.In order to alleviate the above problems,after a variety of programs,the final set to a single series of eight mixing bucket to two mixing bucket,Stir and then concentrated dosing assigned to column flotation scheme.he agitated tank is arranged on the surface of the existing roughing ore pump,The specific program is as follows:Each series is arranged aΦ4.9×4.6m（effective volume of 52m3）and aΦ5.5×4.6m（effective volume 83m3）stirring tank,as a flotation column of the first and second dosing tank.To ensure that the slurry entering the flotation column is agitated evenly,and then set up a pump tank,specifications for theΦ3000×2000.After the transformation,the hydrocyclone after the classification of the overflow slurry directly into the mixing tank,add the regulator to stir and then into the second mixing tank.After the technological process of flotation column and flotation tank combined technological transformation,the device runs stably and the indexes are better than before technological transformation.A concentrate with a P₂O₅ grade of 29.34%,a yield of 67.27%and a recovery rate of 87.33%can be obtained.The P₂O₅ grade of the concentrate increased by 1.03%,and the grade of MgO changed little,but the recovery of concentrate increased by 5.79%.After the centralized dosing technology transformation,the dosage of the reagent is less than the technical transformation,the YP6-4 is reduced by about 1.4Kg/t crude ore,and the YP4 is reduced by about3.6Kg/t crude ore.