The amount of foam scraping is an important aspect of flotation operations. The amount of foam scraped is directly related to the quantity and quality index of the flotation process. In addition to the thickness of the foam layer, the amount of foam scraping is related to the balance and stability of the entire flotation process. Should remain roughing, scavenging, selection of foam scraped amount of balance and stability, all jobs are strictly controlled amount of foam scraped in order to ultimately obtain a qualified and fully recovered metal concentrate.
It must be pointed out that a one-sided increase in the amount of foam scraping is detrimental to the flotation process, which is often overlooked by inexperienced operators. On the surface, increasing the amount of foam scraping seems to increase the recovery rate of the metal, but it should be noted that as the amount of scraping of each working foam increases, not only is it easy to scrape a large amount of gangue into the product, but the quality of the foam product is degraded. At the same time, it will inevitably lead to an increase in the circulation of the mine, destroying the balance of the flotation process and making the flotation effect worse. The flotation mainly uses the slurry gate of the flotation machine to adjust the thickness of the foam layer and the amount of foam scraping by adjusting the slurry surface. The operator can appropriately adjust and use it as an emergency means to deal with various drastic changes. However, adjusting the slurry gate does not eliminate the factors that cause a variety of drastic changes. In operation, blind adjustments will destroy the stability of the flotation process. In fact, the factors affecting the change in scraping amount are various. If it is the change of pulp concentration and fineness, it should be contacted with the grinding grader in time; if the dosage is improper, the dosage should be adjusted in time. Only when an abnormal situation such as slurry overflow or a sharp drop in the surface of the ore is directly affected and directly affects the flotation process index, the slurry gate can be used for immediate and substantial adjustment. When adjusting the slurry gate, it should generally be adjusted from the tail to the front, so that the amount of slurry can be kept relatively stable and the impact on the next operation should be minimized. If the amount of flotation machine is changed due to sudden changes in the graded overflow, in order to eliminate the abnormality as soon as possible, the adjustment should be started from the head of the flotation tank. It is important to observe the thickness of the foam layer and the amount of scraping from the concentrate production tank and the tanks before the rough selection. Because a large number of useful minerals are concentrated in these flotation cells, their flotation phenomenon and foam mineralization are generally more significant in response to changes in process factors. Therefore, mastering the operation of these tanks is to obtain the entire flotation process. The key to high indicators. According to the actual situation that the amount of metal is gradually reduced according to the flotation, the amount of foam scraping should be reduced sequentially.Ladle Refractory,Unshaped Refractory,Nozzle Refractory,Refractory Coating
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