Production method for reducing temperature and solid content of diluted phosphoric acid
A production method and technology of dilute phosphoric acid, applied in chemical instruments and methods, phosphorus compounds, inorganic chemistry, etc., can solve the problems of poor natural sedimentation effect, insufficient temperature drop, inability to produce high-quality phosphoric acid products, etc. Effect of phosphoric acid quality and impurity reduction
Inactive Publication Date: 2014-01-01
WENGFU (GRP) CO LTD
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[0002] The traditional method is to generate dilute phosphoric acid by acidolysis with ore pulp, and then concentrate it through dilute phosphoric acid to produce concentrated phosphoric acid and put it into the concentrated phosphoric acid tank. Since the temperature of the dilute phosphoric acid produced at this time is relatively high, it will enter concentrated production after cooling down and settling in the dilute phosphoric acid tank. Concentrated phosphoric acid, but due to insufficient temperature drop, the natural sedimentation effect is not good. The solid content of the produced concentrated phosphoric acid reaches 3.0-4.0% by mass. Product quality, unable to produce high quality phosphoric acid products
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[0014] like figure 1 As shown, a production method for reducing the solid content of phosphoric acid includes dilute phosphoric acid tank 1, dilute phosphoric acid pump 2, dilute phosphoric acid cooling and stirring head tank 3, surface filter 4, slag acid tank 5, and dilute phosphoric acid storage tank 6. Dilute phosphoric acid tank 1 is connected with dilute phosphoric acid pump 2, dilute phosphoric acid pump 2 is connected with dilute phosphoric acid cooling and stirring head tank 3, dilute phosphoric acid cooling and stirring head tank 3 is connected with surface filter 4 and dilute phosphoric acid tank 1, surface filter 4 is connected with slag The acid tank 5 is connected to the dilute phosphoric acid storage tank 6, and the connection method adopts pipeline connection to transport materials at the same time.
[0015] Using the above-mentioned device, a production method for reducing the temperature and solid content of dilute phosphoric acid comprises the following st...
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The invention discloses a production method for reducing the temperature and the solid content of diluted phosphoric acid. A production device used in the production method mainly comprises a diluted phosphoric acid tank, a diluted phosphoric acid pump, a diluted phosphoric acid cooling and stirring head tank, a surface filter, a slag acid tank and a diluted phosphoric acid storage tank, wherein the diluted phosphoric acid tank is connected with the diluted phosphoric acid pump which is connected with the diluted phosphoric acid cooling and stirring head tank, the diluted phosphoric acid cooling and stirring head tank is connected with the surface filter and the diluted phosphoric acid tank, the surface filter is connected with the slag acid tank and the diluted phosphoric acid storage tank, the connecting manner adopts pipelines for connection, and the pipelines simultaneously convey materials. According to the production method adopting the production device, the temperature of diluted phosphoric acid is reduced by 8 DEG C-10 DEG C; after diluted phosphoric acid is filtered by the surface filter, the mass percentage concentration of the solid content of the filtered diluted phosphoric acid is reduced to be lower than 0.1% from 3.0%-4.0%, and the mass percentage concentration of sesquioxide is reduced by more than 10% on the original basis; and impurities are reduced substantially, so that the next-stage production of high-quality phosphoric acid products is guaranteed.
Description
technical field [0001] The invention relates to the field of phosphoric acid production, in particular to a production method for reducing the temperature and solid content of dilute phosphoric acid. technical background [0002] The traditional method is to generate dilute phosphoric acid by acidolysis with ore pulp, and then concentrate it through dilute phosphoric acid to produce concentrated phosphoric acid and put it into the concentrated phosphoric acid tank. Since the temperature of the dilute phosphoric acid produced at this time is relatively high, it will enter concentrated production after cooling down and settling in the dilute phosphoric acid tank. Concentrated phosphoric acid, but due to insufficient temperature drop, the natural sedimentation effect is not good. The solid content of the produced concentrated phosphoric acid reaches 3.0-4.0% by mass. Product quality, unable to produce high-quality phosphoric acid products. Contents of the invention [0003] ...
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IPC IPC(8): C01B25/234
Inventor 文小兵张红映冉瑞泉刘立锋龙久炎
Owner WENGFU (GRP) CO LTD