Clasificador espiral
Working Principle of Spiral Classifier The pulp discharged from the grinding mill…
Several abnormal phenomena frequently occur during flotation operation. The causes of these phenomena are complex and often not solely due to a single factor. Table 6-3 lists common abnormal phenomena in flotation operation, their causes, and adjustment methods.
Table 6-3 Common Abnormal Phenomena in Flotation Operation, Their Causes, and Main Adjustment Methods
| Abnormal phenomena | Produce born Original because | Main adjustment methods |
| Low concentrate grade | Changes in mineral composition and degree of ore oxidation and argillaceization | Pharmacy, Process |
| Concentrate processing has a high quality fraction and a large output of rough concentrate. | Reduce quality fraction and decrease ore output | |
| Over-inflation | Reduce inflation volume | |
| Excessive dosage reduced selectivity | Reduce drug dosage | |
| Large amount of concentrate scraped out | Reduce scraping amount | |
| Low recovery rate | Changes in mineral composition and degree of ore oxidation and argillaceization | Pharmacy, Process |
| Grinding fineness | Improve grinding and classification fineness | |
| Improper dosage of medicine | Adjusting the medication | |
| Overloaded production capacity, insufficient flotation time | Reduce ore feed | |
| Increased middlings circulation leads to instability in the flotation process. | Reduce the amount of foam scraped off during the operation. | |
| Slurry overflow | Small flotation mass fraction | Reduce water supply |
| Increased overflow of the classifier | Adjusting grinding and classification operations | |
| Flotation machine malfunction, resulting in poor pulp flow. | Repair the flotation machine or clean the pipeline | |
| Excessive foaming agent | Reduce or discontinue medication | |
| The slurry gate was raised too high. | regulating gate | |
| Return volume (medium ore) increased | Reduce medium ore volume | |
| Slurry level drop | The flotation mass fraction increases | Reduce mineral quantity or add water quantity |
| coarse flotation particle size | Adjusting grinding and classification operations | |
| Decreased agitation force in flotation machine, blockage or detachment of aeration pipe. | Repairing flotation machines | |
| The grade of the raw ore has increased. | Supplemental medication | |
| Insufficient foaming agent | Increase dosage | |
| Motor, pipeline, or pump malfunctions, resulting in low slurry volume. | Repair and dredging | |
| Sticky foam | Increase in ore slime | Adjusting the medication |
| Increased pH value in slurry | Reduce the amount of regulator | |
| Excessive foaming agent | Reduce dosage | |
| Lubricating oil mixed into the slurry | Add less or stop adding pine oil and analyze the reasons. | |
| Medicine table accident | Check the dosage of medicine | |
| Excessive scraping volume in each operation | Reduce scraping amount |
