defoamer-antifoam

China's paper industry production operation in 2019   Production completion from January to September 2019 According to the National Bureau of Statistics Express data, as of the end of September 2019, the number of pulp and paper and paper products companies was 6,641, a decrease of 31 from the same period last year. Among them: 46 pulp manufacturing industries, an increase of 3 over the same period last year; 2498 paper manufacturing industries, a decrease of 148 over the same period last year; 4097 paper product manufacturing industries, an increase of 114 over the same period last year. Cumulative production from January to September 2019: paper and paperboard 92.87 million tons, an increase of 4.21 million tons compared to the same period last year, an increase of 4.7%; pulp 9.68 million tons, a decrease of 850,000 tons compared to the same period last year, a decrease of 8.1%; Paper products were 52.17 million ton...

In the production of wet-process phosphoric acid, when the content of carbonate and organic matter in the phosphate rock powder is high, a large amount of CO 2 gas is generated by chemical reaction with the acid. With the fierce progress of the acid hydrolysis process, CO 2 is continuously dispersed in the reaction liquid containing organic components, forming a stable foam layer on the surface of the slurry, and its volume can usually reach 5% to 10% of the volume of the reaction liquid. Production brings many adverse effects: first, it affects the dispersion and acid hydrolysis reaction of phosphate ore pulp, which reduces the production capacity; second, the foam layer not only reduces the equipment utilization rate, but also makes it difficult to observe the material level; third, it hinders the reaction process The evaporation of middle water and the removal of heat cause the reaction temperature of the extraction tank t...

How to add defoamer/antifoam and Tips using defoamer Adding Method 1) Gap addition- common method If it is not continuous foaming and the foaming is not severe, the antifoaming agent may be added once or periodically. Since the amount of the antifoaming agent added is small, in order to make the antifoaming agent uniformly dispersed, it should be added in a place where the foaming liquid is drastically shaken. Many occasions can be added by hand. If the blister is violent or for rapid defoaming, it can be sprayed with a spray gun. If foam is allowed to exist within certain limits, just to prevent excessive foaming, an insoluble, high-efficiency silicone paste defoamer may be applied to the upper edge of the wall of the container or applied to a metal mesh or other textile mesh. Above, cover a certain position of the container. The foam layer is exposed to the silicone defoamer and can be broken, thereby blocking the foam from overflowing. Not enough to add once, you can join ...