Novel solid-liquid separation leaching device

A technology of suction filtration device and vacuum device, which is applied in the direction of separation method, filtration separation, filtration circuit, etc., which can solve the problems of hindering the passage of filter holes, reducing the filtration speed, difficult filtration, etc., so as to reduce the loss of solid matter and avoid leakage of filtration , The effect of saving time in the operation process

Inactive Publication Date: 2012-07-11
PEKING UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, traditional filtration or suction filtration has the following disadvantages. Because solids and liquids move in the same direction, in many cases, the solid matter deposited on the filter medium such as filter paper, filter cloth, filter element or filter membrane will block the filter pores of the filter medium. It hinders or prevents other liquids from passing through the filter holes, which will reduce the filtration speed, and even cause the filter holes to be basically or completely blocked in severe cases, making it difficult to achieve thorough filtration, thus greatly affecting the filtration efficiency

Method used

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Examples

Experimental program
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Effect test

Embodiment 1

[0057] In a conventional manner, in a container with a volume of 3 L, lanthanum chloride and sodium bicarbonate were reacted to form a precipitate of lanthanum carbonate.

[0058] Install the suction filter device so that the suction filter device includes a suction filter with an upward outlet and a vacuum device. The suction filter includes a cup-shaped funnel a with an upward outlet and a filter cloth b. The filter cloth b is fixed on the funnel a by binding, and the vacuum device It mainly includes rubber conduit c, liquid storage tank d and vacuum system.

[0059] The suction filter is placed in the solid-liquid mixed solution where the lanthanum carbonate precipitates, and in order to make the suction filter float on the liquid surface, a float is set for the suction filter. Turn on the air pump switch, run the vacuum system, adjust the vacuum degree to 0.09-0.1MPa, and perform suction filtration until solid-liquid separation is achieved.

Embodiment 2

[0061] In a container with a volume of 2L, silver nitrate reacts with potassium iodide to form a silver iodide precipitate.

[0062] The suction filtration device is installed as in Example 1, the difference is that the filter element made of sintered glass is fixed on the bottom of the cup-shaped funnel with the outlet upward by bonding.

[0063] Place the suction filter in the solid-liquid mixed solution where the silver iodide precipitates, and set the float for the suction filter to float on the liquid surface. In order to make the solid-liquid separation more effective, before running the vacuum system for separation, let the solid-liquid mixture stand still enough to allow the solid matter to settle at the bottom. Then turn on the pump switch, run the vacuum system, adjust the vacuum degree to about 0.1MPa, and perform suction filtration until solid-liquid separation is achieved.

Embodiment 3

[0065] In a container with a capacity of 3L, lanthanum chloride and sodium fluoride react to form a lanthanum fluoride precipitate.

[0066] Install the suction filtration device as in Example 1, the difference is that after running for a period of time, the funnel is taken out, and the sediment on the surface of the filter medium is cleaned; After fully standing, continue suction filtration until solid-liquid separation is achieved.

[0067] After suction filtration, sprinkle a small amount of water on the solid, let it stand for a while, then drain it, and then further dry it or use a desiccant to absorb moisture.

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Abstract

The invention relates to a novel leaching device and a using method and application thereof. The leaching device comprises a filter with an upward opening and a vacuuming device. The filter comprises a funnel with an upward opening and filter medium, a buoy is optionally arranged, and the vacuuming device comprises a guiding tube, a liquid storing tank and a vacuum system. The leaching device leads solid and liquid to move backwards in a leaching process, solid sediment settles downwards under gravity, the liquid is removed above through pumping, solid matters can be prevented from blocking the filtering medium, accordingly time is saved and filtering efficiency is improved.

Description

technical field [0001] The invention relates to a novel suction filtration device, in particular to a suction filtration device for solid-liquid separation. Background technique [0002] Filtration is a general term for a large class of unit operations. It is the process of purifying fluids through specific devices. There are many filtration methods and a wide range of material systems. Solid-liquid, solid-gas, large particles, and small particles are very common. . [0003] Suction filtration is a kind of filtration. Under the action of driving force or other external forces, the liquid in the solid-liquid suspension passes through the filter medium, and the solid particles and other substances are intercepted by the filter medium, so as to realize the separation of solid and liquid. It is common to use an air pump to reduce the pressure in the filter bottle to achieve the purpose of solid-liquid separation. The commonly used devices include Buchner funnel, suction filter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D36/04
Inventor 贺安琪张应刘毓海李钦徐怡庄吴瑾光
Owner PEKING UNIV
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