Flotation operation of the entire process can be divided into roughing, scavenging and selected three separate but closely linked to the flotation process.
Sorting area, thick foam products are generally sent to the constituency of one or more selected areas rich selection, the final selected foam flotation concentrate product. Deal of the scrapings sweep ore selection and selected areas of the tailings product, the flotation process has become the key issues can not be ignored, the ore is suitable for controlling how much is the focus of the flotation operation.
Mine the amount of control in the cycle: a look at the entire amount of the flotation process to pulp is relatively smooth; foam tank is full or not open slot to run the bubble mobility is poor is not smooth; flotation slurry tank level is higher than high scratch pulp, second rule of thumb, if the upper and lower operating factors and changes in process conditions caused. Generally control the amount of ore to return 40-80%.
Flotation operation to be diligent in observing the color foam, foam thickness and foam scraped off the sound changes, but also to determine the Ore and other good and poor control of process conditions is suitable as a screening method. Jinchuan nickel ore sorting process, the roughing operation is actually the main re-watch the foam, the foam layer is thicker, more uniform bubble size is the first slot to the slot is not the bubble there is an obvious color change in thickness; bubble blown Cha Cha foam tank is sound, in order to determine the target better. If roughing tank foam thin, small and large bubble several King, bubble color gloss change significantly, flotation tank boil, scraped off the surface with a slurry bubble and foam tank fell into the crackling sound, poor indicators of positive flotation.
Constituency and selected areas of the scan color of bubble observation, mainly to determine the grade of tailings and concentrate grade, whether the low and high. The last row of the general surface of the metallic foam lighter color best describes structured mineral separation; dead a flotation tank foam with gloss, indicating that flotation agents and other process conditions to adjust properly, help tailings the lower. Flotation concentrate product for domestic washing method is difficult to determine the quality of high and low, can only control the selection of tank foam layer 200_300mm over for good, non-selected operating scraped into the concentrate pulp products, so there help to get high-grade concentrate product.
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