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Device and method for fully automatically filtering sodium vanadate crystals

A sodium vanadate, fully automatic technology, applied in chemical instruments and methods, separation methods, filtration and separation, etc., can solve the problems of difficult continuous operation and filtration of filter cloth gaps, achieve good application prospects, improve filtration efficiency, and reduce labor costs. Effect

Pending Publication Date: 2019-02-15
HEBEI IRON AND STEEL +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] In view of the problems existing in the prior art, the object of the present invention is to provide a device and method for fully automatic filtration of sodium vanadate crystals, utilizing the steam backflush method to realize the automatic unloading of sodium vanadate crystals, solving the problem of crystal The problem of clogging the gap of the filter cloth and making it difficult to carry out continuous operation and filtration has a good application prospect

Method used

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  • Device and method for fully automatically filtering sodium vanadate crystals

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Embodiment 1

[0038] The present embodiment provides a kind of device of fully automatic filtration sodium vanadate crystal, described device comprises still body and shell 7, and described still body is provided with filter plate 5, is distributed with filter cloth between described filter plate 5, so The kettle body is respectively provided with a feed inlet 1, a liquid outlet 9, a discharge port 12 at the bottom of the kettle body, and a steam blowback port 3 at the top of the kettle body.

[0039] Further, the device also includes an air-dried gas inlet 4 on the top of the kettle body and a sewage outlet 13 on the bottom of the kettle body, as well as an observation port 6, a pressure sensing device 8 and a plate repair flange 10 on the kettle body.

[0040] Further, the kettle body is provided with a liquid outlet pipe 2 connected to the liquid outlet, and the liquid outlet pipe 2 is connected to the steam blowback port 3 . A feed pipe is provided in the kettle body, and a filtrate inl...

Embodiment 2

[0042] The present embodiment provides a kind of method for fully automatic filtration sodium vanadate crystal, utilizes the device that provides among the embodiment 1 to carry out, described method is: the mixed slurry obtained after sodium vanadate crystallization is imported from feed inlet 1, The filtrate is uniformly distributed through the cloth inlet 11 on the feed pipe and then enters the filter plate 5 for filtration. At this time, except for the feed inlet 1 and the liquid outlet 9, all other inlets and outlets connected to the outside world are closed. After the filtration is completed, the sodium vanadate crystals remain on the filter cloth of the filter plate 5, and the liquid is discharged from the liquid outlet 9 through the liquid outlet pipe 2. During the filtration process, the content of crystals in the device is determined through the observation port 6 and the pressure sensing device 8. When the crystal content is constant, the feed port 1 and the liquid o...

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Abstract

The invention relates to a device and method for fully automatically filtering sodium vanadate crystals. The device comprises a kettle body and a shell, wherein a filter plate is arranged in the kettle body; a feeding hole and a liquid outlet as well as a discharging hole and a steam blowback port are respectively formed in the kettle body; the discharging hole is formed in the bottom of the kettle body; and the steam blowback port is formed in the top of the kettle body. According to the device and method disclosed by the invention, discharging is performed by utilizing a steam blowback method, the whole discharging process is fully automatically performed, a plate frame does not need to be opened to perform manual or mechanical discharging or clean the filter surface, and the problems ofdifficulty in discharging the sodium vanadate crystals and carrying out the continuous filtration because filter cloth gaps are blocked by the crystals are solved. The whole discharging process can be automatically performed, so that the filtering efficiency is greatly improved, and the manual cost is reduced, and the device and the method have excellent economic benefits and application prospects.

Description

technical field [0001] The invention relates to the technical field of hydrometallurgy, in particular to a device and method for fully automatic filtering of sodium vanadate crystals. Background technique [0002] Vanadium is an important metal with many excellent properties and is widely used in various fields. About 85% of vanadium in the world is used in the steel industry, and the remaining about 15% is mainly used in aerospace alloys, vanadium batteries, chemical industry, catalysts and other industries. [0003] The chemical formula of sodium vanadate is Na 3 VO 4 , is a vanadium product with strong oxidizing properties. It can be used as catalyst, paint drier, mordant, corrosion inhibitor, etc. It can also be used as vanadium raw material to prepare other vanadium salts. For example, calcium vanadate can be prepared by calcium vanadium precipitation process, which can be further processed into high-purity ammonium metavanadate , to prepare high-purity vanadium oxi...

Claims

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Application Information

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IPC IPC(8): B01D29/41C01G31/00B01D29/84
CPCB01D29/41B01D29/84C01G31/00
Inventor 李兰杰高明磊杜浩耿立唐王新东刘义王海旭刘彪王少娜周冰晶赵备备白丽
Owner HEBEI IRON AND STEEL
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