A single metal ore flotation process principles
The choice of the single metal ore flotation principle process depends mainly on the inlaid particle size characteristics of the useful minerals in the ore. Generally, it is mostly unevenly embedded. Due to the different hardness of beneficial minerals and gangues, it is easy to muddy and affect the recovery rate. The principle of the selection process is to make the most useful minerals coarsely selected and selected for coarse ore or medium ore. Then, grinding and re-selecting, for the beneficial minerals with uneven embeddedness, can produce some qualified concentrates under rough grinding conditions, rough-choice tailings for re-grinding or re-election of coarse concentrates, and then The second qualified concentrate.
When dealing with complex and unevenly embedded ore, due to the uneven mineral inclusion of this kind of ore, the range of dissociation of the living body is wide, and sometimes the three-stage grinding three-stage selection process is used. When processing a large amount of raw mud and soluble salt ore, because the slime and ore sand selection process is different, the mud sand sorting process is generally used.
B polymetallic ore flotation principle process
Polymetallic ore flotation is the flotation of metal ore above two beneficial minerals. The selection process generally has priority flotation, mixed flotation and separation flotation and prioritization, mixed flotation and selection process. Usually such as lead zinc ore flotation of lead and zinc, and lead and zinc are sequentially mixed to obtain a mixed concentrate floating away by regrinding the flotation separation of lead concentrate and zinc concentrate obtained after (or no grinding).
For example, copper , lead, zinc and iron sulfide polymetallic ore, the flotation process generally first preferentially flotation of copper and lead, copper and lead separation, preferential flotation of copper and lead tailings for zinc, sulfur mixed flotation and then separation of zinc Sulfur or preferentially flotation of zinc, sulfur-derived zinc concentrate, sulfur concentrate. Certain ores can utilize the floatability of minerals to selectively select some of the dissociated minerals using selective collectors , followed by mixed flotation and separation flotation. Whether there is a regrind process in the process depends on the mineral dissociation.
The advantages and disadvantages of priority flotation and hybrid flotation are as follows:
(1) The fineness of the mixed flotation grinding is thicker than the direct priority flotation, which can save the grinding cost.
(2) The flotation machine used in the mixed flotation is less than the priority flotation, and the flotation reagent is also saved.
(3) The preferential flotation production operation is relatively easy, and it is easy to reach the concentrate grade, while the separation flotation of the mixed flotation is more difficult for the production operation than the preferential flotation.
The above is a general comparison of advantages and disadvantages. The polymetallic ore selection process is to be tested, and the design schemes of priority and mixed flotation are compared and selected.
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