A phosphoric acid slurry treatment device
A slurry and phosphoric acid technology, which is applied in the direction of filtration and separation, fixed filter elements, chemical instruments and methods, etc., can solve the problems of increased recycling cost, large loss of phosphorus, and large loss of phosphorus ions, so as to reduce cost input, Improve the use value and the effect of efficient separation
Active Publication Date: 2019-06-11
山东科泰环境监测有限公司
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[0002] In the production process of wet-process phosphoric acid, due to the high impurity content of the ore and the phenomenon of filter cloth penetration, a certain amount of slurry is produced in the phosphoric acid dilute acid tank and the clarification tank, which will reduce the system capacity and impact when re-added to the production process The crystallization of phosphogypsum and the accumulation of impurities will lead to serious fouling of the system, which is not easy to filter, and the loss of phosphorus is large. It is directly discarded, the loss of phosphorus ions is large, and the economic benefits are low. It can be mixed with the slurry and the diluent, and then re- Filtration, solid impurities are used separately, and the filtrate after impurity removal can be put into production to realize phosphorus recovery, but the existing re-filtration device needs to manually collect solids and liquids, which increases the recovery cost
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[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0019] see Figure 1-2 , the present invention provides a technical solution: a device for phosphoric acid slurry treatment, comprising a filter box 1, a feed pipe 2 and a filter cloth frame 3, the feed pipe 2 is fixed through the top wall of the filter box 1, and the feed pipe 2 is provided with a filter cloth 25 below the nozzle. The filter cloth 25 is a multilayer polypropylene filter cloth with good wear resistance and improved filtering effect. The filter...
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The invention discloses a phosphoric acid slurry treatment device, including a filter box, a feeding pipe and a filter cloth frame. The feeding pipe fixedly penetrates through the top wall of the filter box; filter cloth is arranged below the pipe orifice of the feeding pipe; the filter cloth is fixedly connected to the inner wall of the filter cloth frame; the filter cloth frame is hinged to theinner side wall of the filter box; a material pouring opening is formed in the side wall of the filter box; a sliding plate fixedly connected to the outer side wall of the filter box is arranged at the bottom end of the material pouring opening. Through the combination of the filter cloth frame, a T-shaped rod and a scraping plate, solid-liquid separation of phosphoric acid slurry is realized, solid residues can be prepared into gypsum for further use, filtrate can be further used for production, efficient recovery of phosphorus ions is realized, tedious manual operation is avoided, efficientseparation is realized, the cost investment is reduced, and the use value of the phosphoric acid slurry is improved.
Description
technical field [0001] The invention relates to the field of chemical machinery, in particular to a phosphoric acid slurry treatment device. Background technique [0002] In the production process of wet-process phosphoric acid, due to the high impurity content of the ore and the phenomenon of filter cloth penetration, a certain amount of slurry is produced in the phosphoric acid dilute acid tank and the clarification tank, which will reduce the system capacity and impact when re-added to the production process The crystallization of phosphogypsum and the accumulation of impurities will lead to serious fouling of the system, which is not easy to filter, and the loss of phosphorus is large. It is directly discarded, the loss of phosphorus ions is large, and the economic benefits are low. It can be mixed with the slurry and the diluent, and then re- Filtration, solid impurities are used separately, and the filtrate after impurity removal can be put into production to realize p...
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IPC IPC(8): B01D29/05B01D29/64
Inventor 孙兵
Owner 山东科泰环境监测有限公司