Flotation Tests Procedure Sample Clauses

Flotation Tests Procedure. The representative feed sample weighing 100-250 gm used in each mechanical flotation test was attrition scrubbed at 1800 rpm and at 35-40% solids with sodium silicate for 5-10 minutes. The scrubbing was followed by conditioning with suitable dosages of collectors for 2-3 minutes. The water was added to make up the final slurry volume to 1 liter, and 2 drops of Dowfroth-250 was added. After 5 minutes, the rpm was reduced to 1000, and flotation was initiated by controlling the airflow rate. The flotation run time was 6-7 minutes depending upon the reagent's dosage level. The entire sample of the collected concentrate and the tail was dried and weighed. The concentrate and tailings collected from the sample were analyzed for the gross counts and Ra-226 activity. The schematic of the 1L Denver flotation cell is shown in Figure 18.