CN211025447U

CN211025447U - Coarse silver recovery and filtration device

Info

Publication number: CN211025447U
Application number: CN201921707179.9U
Authority: CN
Inventors: 金浩; 李代颖
Original assignee: Wuhan Changhai Electric Propulsion And Chemical Power Supply Co ltd
Current assignee: Wuhan Changhai Electric Propulsion And Chemical Power Supply Co ltd
Priority date: 2019-10-12
Filing date: 2019-10-12
Publication date: 2020-07-17
Anticipated expiration: 2029-10-12

Abstract

The utility model discloses a filter equipment is retrieved to coarse silver, include both ends open-ended cylinder body and locate the filter bag in the cylinder body, cylinder body bottom opening part be provided with foraminiferous stainless steel bottom baffle, bottom baffle below is the toper filtration end, the high-power bottom suction filtration mouth of toper filtration end passes through first diaphragm pump and connects first liquid storage pot, the cylinder body lateral wall be provided with gliding movable suction filtration mouth from top to bottom, movable suction filtration mouth pass through second diaphragm pump and connect the second liquid storage pot, when this filter equipment is arranged in the coarse silver powder that produces and silver nitrate mother liquor recovery in the technology production, promotion work efficiency that can show changes the product quality of retrieving silver powder, the utility model discloses can solve in the recovery process and influence great technical difficulty-wash and filter edulcoration process inefficiency problem to recovery efficiency, the silver nitrate mother liquor that retrieves a batch 500L in the present stage adopts original way time about 2 days, and adopt novel filter equipment after the time can shorten for 1 day.

Description

Coarse silver recovery and filtration device

Technical Field

The utility model belongs to the technical field of the environmental protection equipment, specifically be a useless silver recovery filter equipment.

Background

The recovery of crude silver in silver production is mainly two chunks: the method comprises the following steps of firstly, producing unqualified silver powder in silver powder production, obtaining a ground water tank and the like, wherein the main form of the silver powder is silver powder, and the recovery process comprises the steps of recovering the silver powder, cleaning, melting, dissolving, filtering to remove impurities and obtaining a qualified silver nitrate product; and secondly, mother liquor containing impurities is remained in the silver nitrate production process, and the recovery process comprises mother liquor, silver powder reduction, cleaning, melting, dissolving, filtering and impurity removal and qualified silver nitrate product.

At present, the filtering device mainly adopted for recovering the crude silver is provided with a solid-liquid separation device with a diaphragm vacuum pump, a Buchner funnel, normal-pressure filtration and the like.

① is equipped with the solid-liquid separation device of the diaphragm vacuum pump, if the organic matter content is more in mother liquor and reduction silver powder, the filtrate will be stratified, the filtration speed is very slow, the long-time negative pressure suction filtration will also lead to the damage of the apparatus, inefficiency and economic efficiency is also lower. ② Buchner funnel generally needs to increase the filter paper to use, the aperture of the filter paper is smaller, the filtrate also will be stratified, the situation of difficult suction filtration, the work efficiency is low, can't carry on the effective recovery to the mother liquor of the waste silver, if the negative pressure increases, will destroy the filter paper, can not filter the organic matter in the filtrate.

SUMMERY OF THE UTILITY MODEL

For solving the above technical problem that exists among the prior art, the utility model discloses according to the actual problem that meets in the coarse silver recovery, provided the coarse silver recovery filter equipment who takes portable suction filtration mouth.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a filter equipment is retrieved to coarse silver, includes both ends open-ended cylinder body and locates the filter bag in the cylinder body, cylinder body bottom opening part be provided with foraminiferous stainless steel bottom baffle, bottom baffle below is the toper filter bottom, the high-power bottom suction filtration mouth of toper filter bottom passes through first diaphragm pump and connects first liquid storage pot, the cylinder body lateral wall be provided with gliding movable suction filtration mouth from top to bottom, movable suction filtration mouth pass through the second diaphragm pump and connect the second liquid storage pot.

The crude silver recovery and filtration device is characterized in that filter paper is paved on a baffle at the bottom of the crude silver recovery and filtration device.

The crude silver recovery and filtration device is characterized in that a movable suction filtration port is internally connected with a flange and is provided with filter paper.

The power of the first diaphragm pump of the crude silver recovery and filtration device is larger than that of the second diaphragm pump.

The inner surface and the outer surface of the cylinder body of the crude silver recovery and filtration device are made of 316L materials.

The utility model has the advantages that when the filtering device is used for recovering coarse silver powder and silver nitrate mother liquor generated in process production, the work efficiency can be obviously improved, the product quality of the silver powder can be obviously improved, the problem that the cleaning, filtering and impurity removing process is low in efficiency when the recovery efficiency is greatly influenced in the recovery process can be solved, the original method time is adopted for recovering a batch of 500L silver nitrate mother liquor in the current stage to be about 2 days, and the time can be shortened to 1 day after the novel filtering device is adopted.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

The figures are numbered: 1-cylinder body, 2-movable suction filtration mouth, 3-filter paper, 4-bottom baffle, 5-conical filter bottom, 6-bottom suction filtration mouth, 7-first diaphragm pump, 8-first liquid storage pot, 9-second diaphragm pump, and 10-second liquid storage pot.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Referring to fig. 1, the utility model discloses a silver powder solid-liquid separation filter equipment, including both ends open-ended cylinder body 1 and locate the filter bag in the cylinder body 1, wherein cylinder body 1 mainly is as the strorage device of filtrating or reduction silver powder, silver nitrate mother liquor has stronger acidity, there is excessive reduction liquid in the reduction silver powder, so cylinder body surface and inside material must be 316L materials, the available volume of cylinder body 1 is 100L, the mesh number of filter bag generally chooses 1000 meshes, the filter bag needs to laminate with cylinder body 1 internal wall, cylinder body 1 bottom opening part be provided with circular foraminiferous 316L stainless steel bottom baffle 4, the mesh number is about 10 meshes, play the supporting role for the filter bag mainly when solution natural filtration or suction filtration, bottom baffle 4 below is toper filter bottom 5, toper filter bottom 5 is for connecting the natural filtration device of cylinder body 1 bottom, mainly used for ordinary pressure diaphragm pump filtration or bottom suction filtration use, bottom suction filtration mouth 6 below toper filter bottom 5 connects first liquid storage tank 8 through first liquid storage pot 7, first liquid storage tank 7 is used for carrying out the separation with reduction silver powder, first diaphragm pump 8 is used for storage liquid storage tank 2 is connected the mobile waste liquid storage tank and the liquid silver nitrate slides the filter liquid can adjust according to the second side wall, the waste liquid storage tank 2, the waste liquid extraction mouth is provided with the second filter liquid storage tank 2.

Further, the bottom baffle 4 is paved with the filter paper 3, and the filter paper 3 is selected and installed as a secondary filter device after being filtered by the filter bag according to actual needs, so that the filter paper required in actual needs can be flatly paved and fixed, and the filter paper is prevented from being damaged due to excessive filter liquor.

Movable suction filtration mouth 2 designs in 1 side of cylinder body, movable suction filtration mouth 2 inscription flange, the suction filtration mouth can slide from top to bottom and increase filter paper in the exit, the main objective of this design is when filtrating or reduction silver powder is being difficult to filter solution layering appearing, can adjust the suction filtration mouth to filtrating layering department, directly gets rid of filtrating, then carries out the suction filtration again, can practice thrift a large amount of operating time like this, promotes efficiency.

This filter equipment's diaphragm pump divides big or small two, and second diaphragm pump 9 is small-size diaphragm pump, and first diaphragm pump 7 power is slightly big, and both use of mutually supporting during the filtration, can practice thrift greatly and filter the scavenging period, promote work efficiency.

The utility model discloses washing and two bold pieces of filtration edulcoration in the filter equipment mainly used silver was retrieved. The practical use of the filter device will be described in detail below.

Firstly, the method comprises the following steps: and (5) cleaning. The cleaning method mainly comprises the steps of cleaning the reduced silver powder, wherein the reduced silver powder is formed by reducing silver nitrate mother liquor in a reaction kettle through hydrazine hydrate, then guiding the reacted silver powder into a cylinder body 1, standing for 10 minutes to enable the solution to be layered with the silver powder, moving a movable suction filter port 2 into an upper layer solution, carrying out suction filtration, closing the movable suction filter port 2 when the upper layer solution is nearly completely sucked, opening a bottom suction filter port 6, draining the residual solution, and then cleaning for 2-3 times in the same operation until the silver powder reaches a warehousing standard.

Secondly, the method comprises the following steps: the process comprises the steps of filtering and removing impurities, wherein the step is carried out in the last step of silver powder recovery, the silver particles are mainly dissolved into silver nitrate and then filtered, and organic impurities in a silver nitrate solution after the silver powder is dissolved are difficult to remove through a filter bag in a suction filtration mode, so that the normal pressure filtration adopted in the step is suitable at present. The silver nitrate solution is placed in the cylinder body 1, under the weak acidity condition, organic matters can be layered with the silver nitrate solution, organic matter impurities can be in the lower layer of the solution generally, a normal pressure filtering device is a bottom suction filter opening 6 generally, and if the content of the organic matters is high, filter paper can be directly blocked, so that the problems of difficulty in filtering and low filtering efficiency are caused. And the filtering device of the utility model can solve the problem to a certain extent. After the silver nitrate solution is fixed in a layered mode, the movable suction filtration port 2 of the cylinder body 1 is adjusted to the upper layer silver nitrate solution, low-power suction filtration is carried out, after the upper layer clarified silver nitrate solution is subjected to suction filtration, the movable suction filtration port 2 is closed, the conical high-power bottom suction filtration port 6 is opened, the residual mother liquor is subjected to suction filtration, and after the suction filtration is finished, the obtained product is qualified through laboratory full-inspection tests, and the device can be put into production and is suitable for use.

The device of this equipment mainly used solves the filtering problem that silver powder was retrieved, and the design thinking is small-size serialization filtration equipment, can with the useless silver powder quantity that produces in the actual production for the benchmark design line quantity, equipment is simple, easy to operate, after this factory's actual experiment, the feasibility is better, can to a great extent increase work efficiency, practices thrift the cost, has positive propulsive effect to actual production.

The above embodiments are merely illustrative of the principles and effects of the present invention, and some embodiments may be applied, and it will be apparent to those skilled in the art that a plurality of modifications and improvements may be made without departing from the inventive concept of the present invention, and all of these modifications and improvements fall within the protection scope of the present invention.

Claims

1. The utility model provides a filter equipment is retrieved to coarse silver which characterized in that: including both ends open-ended cylinder body (1) and locate the filter bag in cylinder body (1), cylinder body (1) bottom opening part be provided with foraminiferous stainless steel bottom baffle (4), bottom baffle (4) below is the toper and strains end (5), first liquid storage pot (8) are connected through first diaphragm pump (7) in bottom suction filtration mouth (6) of toper filtration end (5), cylinder body (1) lateral wall be provided with gliding movable suction filtration mouth (2) from top to bottom, movable suction filtration mouth (2) connect second liquid storage pot (10) through second diaphragm pump (9).

2. The crude silver recovery and filtration device according to claim 1, wherein the bottom baffle (4) is laid with filter paper (3).

3. The crude silver recovery and filtration device as claimed in claim 1, wherein the movable suction filtration port (2) is internally connected with a flange and is provided with filter paper.

4. A crude silver recovery filter unit according to claim 1, 2 or 3, characterized in that the first diaphragm pump (7) has a higher power than the second diaphragm pump (9).

5. The crude silver recovery and filtration device according to claim 1, 2 or 3, wherein the cylinder (1) is made of 316L on the inner and outer surfaces.