Device and process for improving regeneration efficiency of ceramic filtering plate for phosphate tailing

A ceramic filter plate, regeneration efficiency technology, applied in the direction of filtration separation, separation device, fixed filter element filter, etc., can solve the problem of high cost, reduce cleaning cost, improve cleaning efficiency, and eliminate the use of filter elements.

Inactive Publication Date: 2016-08-17
HUBEI LIUGUO CHEM IND
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Moreover, the filter element of the filter also needs to be replaced frequently. Generally, the filter element is replaced every 15 days, and 8 filter elements are replaced each time. Three sets of filters need to be replaced every year. 576, the market price is 90 yuan / piece, and the cost is relatively high

Method used

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  • Device and process for improving regeneration efficiency of ceramic filtering plate for phosphate tailing
  • Device and process for improving regeneration efficiency of ceramic filtering plate for phosphate tailing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Use a ceramic filter to filter the tailings slurry after collophosite beneficiation. The mass concentration of the tailings slurry is 60%. The filtrate during filtration is collected in the filtrate recovery tank. After the filtrate recovery tank is full, the excess filtrate overflows to the circulating pool. After working for 8 hours, mix the filtrate from the filtrate recovery tank with nitric acid with a mass concentration of 50% to form a nitric acid cleaning solution with a mass concentration of 5%, and then add it to the entrance of the ceramic filter cleaning solution to clean the ceramic filter. The pressure of the liquid is 0.6 Mpa, and the sewage after cleaning is recovered and used in the tailings thickening device.

Embodiment 2

[0037] A ceramic filter is used to filter the tailings slurry after collophosite beneficiation. The mass concentration of the tailings slurry is 65%. The filtrate during filtration is collected in the filtrate recovery tank. After the filtrate recovery tank is full, the excess filtrate overflows to the circulating pool. After working for 6 hours, mix the filtrate of the filtrate recovery tank with nitric acid with a mass concentration of 50% to form a nitric acid cleaning solution with a mass concentration of 5%, and then add it to the entrance of the ceramic filter cleaning solution to clean the ceramic filter. The pressure of the liquid is 0.7 Mpa, and the sewage after cleaning is recovered and used in the tailings thickening device.

Embodiment 3

[0039]A ceramic filter is used to filter the tailings slurry after collophosite beneficiation. The mass concentration of the tailings slurry is 62%. The filtrate during filtration is collected in the filtrate recovery tank. After the filtrate recovery tank is full, the excess filtrate overflows to the circulating pool. After working for 7 hours, mix the filtrate from the filtrate recovery tank with nitric acid with a mass concentration of 50% to form a nitric acid cleaning solution with a mass concentration of 5%, and then add it to the entrance of the ceramic filter cleaning solution to clean the ceramic filter. The pressure of the liquid is 0.8 Mpa, and the sewage after cleaning is recovered and used in the tailings thickening device.

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Abstract

The invention discloses a device and process for improving the regeneration efficiency of a phosphorous tailings ceramic filter plate. The device includes a ceramic filter, the filtrate outlet of which is connected to a filtrate recovery tank, and the filtrate recovery tank is connected to the cleaning liquid of the ceramic filter through a pipeline. At the inlet, there is also a nitric acid pipeline connected to the pipeline. The specific process is to collect the filtrate from the ceramic filter when it is working normally to the filtrate recovery tank. After 6 to 8 hours of normal operation, mix the filtrate from the filtrate recovery tank with nitric acid to prepare a nitric acid cleaning solution, and then add it to the ceramic filter cleaning solution. Ceramic filter for cleaning. Because the present invention uses the filtrate during normal filtration of the ceramic filter plate for cleaning, the water quality of the washing liquid reaches the standard, does not block the ceramic filter plate, has good cleaning effect, does not consume new water, saves energy consumption, and reduces costs.

Description

technical field [0001] The invention belongs to the field of phosphorus tailings treatment, and in particular relates to a device and a process for improving the regeneration efficiency of a phosphorus tailings ceramic filter plate. Background technique [0002] The tailings slurry with a concentration of 60% to 63% from the tailings dense pool is pumped through the bottom flow of the tailings to the vacuum ceramic filter for liquid-solid separation. The undigested and absorbed flotation agent in the slurry is adhered and smeared in the form of organic matter On the surface of the ceramic plate, under normal circumstances, it is necessary to use nitric acid solution to chemically clean the ceramic filter plate after filtering for a period of time. [0003] Since the process water used by all the applicant's devices comes from nearby reservoirs, the water quality is greatly affected by seasonal changes throughout the year. For example, when the rainy season comes, the water c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D33/48B01D29/66
CPCB01D33/48B01D29/66B01D2221/04
Inventor 阮怀贵程旭东齐宇张良喜
Owner HUBEI LIUGUO CHEM IND
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