CN218372456U

CN218372456U - Zinc slag treatment device for steel cord galvanizing processing

Info

Publication number: CN218372456U
Application number: CN202222579042.8U
Authority: CN
Inventors: 郭琪超; 钱国平; 陈亮; 严华
Original assignee: Zhangjiagang City Junma Steel Cord Co ltd
Current assignee: Zhangjiagang City Junma Steel Cord Co ltd
Priority date: 2022-09-28
Filing date: 2022-09-28
Publication date: 2023-01-24
Anticipated expiration: 2032-09-28

Abstract

The utility model relates to a zinc-plating processing technology field, concretely relates to zinc dross processing apparatus of steel cord zinc-plating processing. The interior of a zinc dissolving tank in the zinc slag treatment device is provided with a reaction cavity for accommodating zinc slag and sulfuric acid solution. The sieve plate separates a filtrate cavity in the reaction cavity. The first centrifugal pump pumps the mixed solution to the first filtering tank for filtering. The reaction tank is positioned at one side of the zinc dissolving tank. The first filtering tank spans over the reaction tank. The bottom of the first filtering tank is provided with a second liquid outlet. The inside of first filtering ponds is provided with dismantlement formula filter screen. And the second centrifugal pump pumps the zinc sulfate solution into a second filtering tank for filtering. The liquid storage tank is positioned below the second filtering tank. The liquid storage tank is internally provided with a liquid storage cavity for receiving the filtrate of the second filter tank. A filter bag is arranged in the second filter tank. The filter bag is connected with the inner wall of the second filter tank. This zinc dross processing apparatus greatly reduced the processing cost of zinc dross, promoted the recycle ratio of zinc dross.

Description

Zinc slag treatment device for steel cord galvanizing processing

Technical Field

The utility model relates to a steel cord zinc-plating processing technology field, concretely relates to zinc dross processing apparatus of steel cord zinc-plating processing.

Background

The steel cord is a framework material for a tire, and the adhesion property of the steel cord to rubber determines the product quality of a radial tire. In the production process of the steel cord, a series of procedures such as rough drawing, middle drawing heat treatment, electroplating, wet drawing, stranding and the like are required. Among them, in order to further improve the corrosion resistance of the steel cord, manufacturers generally adopt a hot galvanizing process to treat the steel cord.

Hot galvanizing is the most basic, economic and effective process method for retarding environmental corrosion of metal products. The hot-dip process is that the temperature of a zinc ingot is raised to a molten state by internally heating ceramic in a zinc pot, and after the steel wire which is subjected to the acid cleaning process enters molten zinc liquid, the zinc liquid can be uniformly attached to the steel wire. The zinc liquid reacts with an iron matrix in the steel wire to form a uniform alloy layer, so that a physical barrier and electrochemical protection are provided for the steel wire, and the service life of the steel wire is prolonged.

However, in the hot galvanizing process of the steel cord, as iron on the surface of the steel wire is dissolved in the zinc liquid, zinc slag is generated by the reaction of the iron salt and the zinc. The zinc slag mainly consists of zinc-iron alloy crystals. The zinc dross is generally deposited on the bottom of a boiler, and because the thermal conductivity of the zinc dross is low, the accumulated excessive zinc dross easily causes the local temperature rise of the bottom of the boiler, thereby affecting the temperature of zinc liquid. Therefore, the fished zinc dross is difficult to be reused for the production of the steel cord, and the investment of extra cost is increased.

In summary, in the process of galvanizing a steel cord, how to design a zinc dross treatment apparatus to reduce the cost of treating zinc dross and improve the recycling rate of zinc dross becomes a technical problem to be solved by those skilled in the art.

Disclosure of Invention

An object of the utility model is to provide a dross treatment device for the in-process of steel cord implementation galvanizing process for reduce the cost of handling the dross, promote the recycle ratio of dross.

In order to achieve the above purpose, the utility model adopts the following scheme: the zinc slag treatment device for steel cord galvanizing processing comprises a zinc dissolving tank, a reaction tank, a first filtering tank, a second filtering tank, a liquid storage tank, a first centrifugal pump and a second centrifugal pump;

a reaction cavity for containing zinc slag and sulfuric acid solution is arranged in the zinc dissolving tank, a sieve plate is arranged in the reaction cavity, and the sieve plate separates a filtrate cavity in the reaction cavity;

a first liquid outlet is formed in the bottom of the filtrate cavity, an inlet of the first centrifugal pump is connected with the first liquid outlet through a pipeline, and an outlet of the first centrifugal pump is connected with the first filtering tank through a pipeline;

the reaction tank is positioned on one side of the zinc dissolving tank, the first filtering tank stretches over the reaction tank, a second liquid outlet is formed in the bottom of the first filtering tank, and a detachable filter screen is arranged in the first filtering tank;

a third liquid outlet is formed in the side wall of the reaction tank, an inlet of the second centrifugal pump is connected with the third liquid outlet through a pipeline, and an outlet of the second centrifugal pump is connected with the second filter tank through a pipeline;

the liquid storage tank is located below the second filtering tank, a liquid storage cavity for receiving the filtrate of the second filtering tank is formed in the liquid storage tank, a filter bag is arranged in the second filtering tank, and the filter bag is connected with the inner wall of the second filtering tank.

Preferably, the zinc dissolving tank is provided with an injection pipe for adding the sulfuric acid solution, and the bottom of the injection pipe is connected with a drainage pipe. So set up, the operating personnel of being convenient for adds sulphuric acid solution in to dissolving the zinc pond through the filling tube, and then is favorable to guaranteeing the concentration of sulphuric acid solution in the reaction cavity, promotes dissolving of zinc dross, has improved the efficiency of dissolving the zinc dross in dissolving the zinc pond, and the drainage tube is arranged in guiding sulphuric acid solution to get into the reaction cavity, has avoided splashing at the sulphuric acid solution of liquid feeding in-process.

Preferably, a stirring device is arranged above the reaction tank and comprises a support, a stirring motor and a stirring rod, the support spans over the reaction tank, the mounting end of the stirring motor is connected with the support, and the stirring rod is connected with an output shaft of the stirring motor. So set up, agitating unit is used for accelerating the reaction of the iron ion in the reaction tank and calcium hydroxide, has promoted the iron ion and has precipitated in the reaction tank with the form of iron hydroxide, is favorable to promoting the efficiency of handling the zinc dross.

Preferably, the inner wall of the first filtering tank is provided with an installation step, and the detachable filtering net is connected with the installation step through a fastening piece. So set up, the convenient to detach formula filter screen is installed in first filtering ponds, has reduced the installation degree of difficulty of dismantlement formula filter screen, is favorable to in time changing the filter screen and washs, and then has guaranteed the filter effect of first filtering ponds to particulate impurity and vermiculite.

Preferably, the bottom of the second filtering tank is provided with a supporting frame, the liquid storage tank is positioned on one side of the supporting frame, and a fine filtering tank is arranged between the second filtering tank and the liquid storage tank. So set up, the essence filtering ponds are used for filtering zinc sulfate solution through the second filtering ponds filterable once more, have further promoted zinc sulfate solution's purity.

Preferably, the filter bag is a non-woven fabric filter bag, and the edge of the non-woven fabric filter bag is welded on the inner wall of the second filter tank in a hot melting mode. So set up, the non-woven fabrics filter bag passes through the hot melt welded mode and links to each other with the inner wall of second filtering ponds, is favorable to improving the joint strength who crosses filter bag and second filtering ponds, has guaranteed the filter effect of second filtering ponds.

Preferably, the bottom of the liquid storage tank is provided with a heating coil. In particular, the heating coil is arranged in a snake shape at the bottom of the liquid storage tank. So set up, heating coil is used for heating the evaporation to the clear transparent zinc sulfate solution for further improve the concentration of zinc sulfate solution in the liquid storage tank, and then be convenient for zinc sulfate solution is applied to the electrogalvanizing industry of steel cord, has further promoted the recycle ratio of zincilate.

The utility model provides a zinc dross processing apparatus of steel cord zinc-plating processing, the sulphuric acid solution that the utilization was dissolved in the zinc bath is implemented to dissolve the zinc dross, the zinc-iron alloy in the zinc dross all exists in the mixed solution with the form of ion, the mixed solution is through the filtration back of sieve, first centrifugal pump filters in extracting the mixed solution to first filtering ponds, re-enter the reaction tank in respectively with hydrogen peroxide solution and excessive calcium hydroxide reaction, the reaction of iron ion and calcium hydroxide forms the iron hydroxide and deposits in the reaction tank, the second centrifugal pump filters in extracting zinc sulfate solution to the second filtering ponds, final zinc sulfate solution is saved in the liquid storage tank, therefore, greatly reduced the treatment cost of zinc dross, the recycle ratio of zinc dross has been promoted.

Drawings

FIG. 1 is a schematic perspective view of a zinc dross treatment apparatus for steel cord galvanizing process according to an embodiment of the present invention;

FIG. 2 is a front view of a zinc dross treating apparatus for galvanizing a steel cord in the embodiment of FIG. 1;

fig. 3 is a top view of fig. 2.

The reference numerals have the following meanings:

1. a zinc dissolving tank; 2. a reaction tank; 3. a first filtration tank; 4. a second filtration tank; 5. a liquid storage tank; 6. a first centrifugal pump; 7. a second centrifugal pump; 8. a sieve plate; 9. a reaction chamber; 10. a filtrate chamber; 11. a detachable filter screen; 12. a filter bag; 13. an injection pipe; 14. a support; 15. a stirring motor; 16. a support frame; 17. a fine filter; 18. a heating coil.

Detailed Description

The following detailed description of the embodiments of the present invention is provided with reference to the accompanying drawings.

The zinc dross treatment device for steel cord galvanizing processing shown in figures 1-3 aims to reduce the cost of zinc dross treatment and improve the recovery and utilization rate of the zinc dross.

This zinc dross processing apparatus utilizes the sulphuric acid solution in the zinc dissolving tank to implement to dissolve the zinc dross, the zinc-iron alloy in the zinc dross all exists in the mixed solution with the form of ion, the mixed solution is after the filtration of sieve, first centrifugal pump filters in extracting the mixed solution to first filtering ponds, reentrant reaction tank in respectively with hydrogen peroxide solution and excessive calcium hydroxide reaction, the reaction of iron ion and calcium hydroxide forms ferric hydroxide and deposits in the reaction tank, the second centrifugal pump filters in extracting the zinc sulfate solution to the second filtering ponds, final zinc sulfate solution is saved in the liquid storage tank, therefore, greatly reduced the treatment cost of zinc dross, the recycle ratio of zinc dross has been promoted.

The zinc dross treatment device for the steel cord galvanizing process of the example shown in fig. 1 comprises a zinc dissolving tank 1, a reaction tank 2, a first filtering tank 3, a second filtering tank 4, a liquid storage tank 5, a first centrifugal pump 6 and a second centrifugal pump 7.

The interior of the zinc dissolving tank 1 is provided with a reaction cavity 9 for accommodating zinc slag and sulfuric acid solution.

A sieve plate 8 is arranged in the reaction cavity 9. The sieve plate 8 separates a filtrate chamber 10 in the reaction chamber 9.

The bottom of the filtrate chamber 10 is provided with a first liquid outlet. The inlet of the first centrifugal pump 6 is connected with the first liquid outlet through a pipeline. The outlet of the first centrifugal pump 6 is connected with the first filtering tank 3 through a pipeline.

The reaction tank 2 is positioned at one side of the zinc dissolving tank 1. The first filtering tank 3 spans over the reaction tank 2. The bottom of the first filtering tank 3 is provided with a second liquid outlet. The inside of the first filtering tank 3 is provided with a detachable filter screen 11.

As shown in the figure, a third liquid outlet is arranged on the side wall of the reaction tank 2. The inlet of the second centrifugal pump 7 is connected with the third liquid outlet through a pipeline. The outlet of the second centrifugal pump 7 is connected with the second filtering tank 4 through a pipeline.

As shown in fig. 2, the liquid storage tank 5 is located below the second filtering tank 4. The liquid storage tank 5 is internally provided with a liquid storage cavity for receiving the filtrate of the second filter tank 4. A filter bag 12 is arranged in the second filter tank 4. The filter bag 12 is connected to the inner wall of the second filtering tank 4.

Wherein the filter bag 12 is a non-woven fabric filter bag. The edge of the non-woven fabric filter bag is welded on the inner wall of the second filter tank 4 in a hot melting way. So set up, the non-woven fabrics filter bag passes through the hot melt welded mode and links to each other with the inner wall of second filtering ponds 4, is favorable to improving the joint strength who crosses filter bag 12 and second filtering ponds 4, has guaranteed the filter effect of second filtering ponds 4.

As shown in fig. 2, a supporting frame 16 is disposed at the bottom of the second filtering tank 4, the liquid storage tank 5 is disposed at one side of the supporting frame 16, and a fine filtering tank 17 is disposed between the second filtering tank 4 and the liquid storage tank 5.

So set up, smart filtering pond 17 is used for filtering zinc sulfate solution through second filtering ponds 4 filterable once more, has further promoted zinc sulfate solution's purity. Wherein the fine filtering tank 17 has the same filtering structure as that of the second filtering tank 4. The fine filter 17 performs secondary filtration on the zinc sulfate solution by using a non-woven fabric filter bag. Meanwhile, a plurality of fine filter tanks 17 can be arranged between the second filter tank 4 and the liquid storage tank 5 according to actual requirements.

As shown in fig. 3, an installation step is provided on the inner wall of the first filtering tank 3. The detachable filter screen 11 is connected with the mounting step through a fastener. From this, convenient to detach formula filter screen 11 is installed in first filtering ponds 3, has reduced the installation degree of difficulty of dismantlement formula filter screen, is favorable to in time changing the filter screen and washs, and then has guaranteed first filtering ponds 3 to the filter effect of granule impurity and vermiculite.

In order to further increase the reaction rate of the reaction tank 2, a stirring device is arranged above the reaction tank 2. The stirring device comprises a bracket 14, a stirring motor 15 and a stirring rod. As shown in FIG. 3, the holder 14 spans the reaction cell 2. The mounting end of the stirring motor 15 is connected to the bracket 14. The stirring rod is connected with an output shaft of the stirring motor 15.

So set up, agitating unit is used for accelerating the reaction of the iron ion in the reaction tank 2 with calcium hydroxide, has promoted the form of iron ion with ferric hydroxide and has precipitated in reaction tank 2, is favorable to promoting the efficiency of handling the zinc dross.

As shown in fig. 3, the bottom of the reservoir 5 is provided with a heating coil 18. Wherein, in an optional scheme, the heating coil 18 is arranged in a serpentine shape at the bottom of the liquid storage tank 5.

So set up, heating coil 18 is used for heating the evaporation to the clear transparent zinc sulfate solution for further improve the concentration of zinc sulfate solution in liquid storage tank 5, and then be convenient for zinc sulfate solution and be applied to the electrogalvanizing industry of steel cord, further promoted the recycle ratio of zinc dross.

As shown in FIG. 1, the zinc dissolving tank 1 is provided with an injection pipe 13 to which a sulfuric acid solution is added. The bottom of the injection pipe 13 is connected with a drainage pipe. So set up, the operating personnel of being convenient for adds sulphuric acid solution in to dissolving zinc pool 1 through injection tube 13, and then is favorable to guaranteeing the concentration of sulphuric acid solution in reaction cavity 9, promotes dissolving of zinc dross, has improved the efficiency of dissolving 1 dissolving zinc dross in dissolving zinc pool. The drainage tube is used for guiding the sulfuric acid solution to enter the reaction cavity 9, so that the sulfuric acid solution is prevented from splashing in the liquid adding process.

The embodiment of the utility model provides an in during zinc sediment processing apparatus of proposing of steel cord galvanizing process use, including following step:

step one, putting zinc slag and a sulfuric acid solution into a zinc dissolving tank according to a proportion, and sampling and detecting the content of zinc and iron in a mixed solution after complete reaction;

step two, filtering the dissolved mixed solution through a sieve plate, pumping out the mixed solution through a first centrifugal pump, injecting the mixed solution into a first filtering tank, and filtering to remove impurities (dust, vermiculite and the like);

removing impurities from the mixed solution, then feeding the mixed solution into a reaction tank, adding hydrogen peroxide into the reaction tank, stirring and standing;

step four, adding excessive calcium hydroxide into the reaction tank, stirring and standing to enable iron ions in the mixed solution to be precipitated in the form of ferric hydroxide;

step five, pumping the zinc sulfate solution out by a second centrifugal pump, injecting the zinc sulfate solution into a second filtering tank, and filtering by using a filter bag (a non-woven fabric filter bag can be actually used on site, or a pp filter film can be used) in the second filtering tank to obtain a clear and transparent zinc sulfate solution;

heating the zinc sulfate solution by the heating coil to obtain a high-concentration zinc sulfate solution;

and step seven, extracting the zinc sulfate solution in the liquid storage tank for power supply and zinc plating process.

The utility model discloses not be limited to the concrete technical scheme that above-mentioned embodiment said, except above-mentioned embodiment, the utility model discloses can also have other embodiments. It will be understood by those skilled in the art that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the invention.

Claims

1. A zinc dross treatment device for steel cord galvanizing processing is characterized by comprising a zinc dissolving tank (1), a reaction tank (2), a first filtering tank (3), a second filtering tank (4), a liquid storage tank (5), a first centrifugal pump (6) and a second centrifugal pump (7);

the interior of the zinc dissolving tank (1) is provided with a reaction cavity (9) for accommodating zinc slag and sulfuric acid solution;

a sieve plate (8) is arranged in the reaction cavity (9), and the sieve plate (8) separates a filtrate cavity (10) in the reaction cavity (9);

a first liquid outlet is formed in the bottom of the filtrate cavity (10), an inlet of the first centrifugal pump (6) is connected with the first liquid outlet through a pipeline, and an outlet of the first centrifugal pump (6) is connected with the first filtering tank (3) through a pipeline;

the reaction tank (2) is positioned at one side of the zinc dissolving tank (1), the first filtering tank (3) stretches over the reaction tank (2), a second liquid outlet is formed in the bottom of the first filtering tank (3), and a detachable filter screen (11) is arranged in the first filtering tank (3);

a third liquid outlet is formed in the side wall of the reaction tank (2), an inlet of the second centrifugal pump (7) is connected with the third liquid outlet through a pipeline, and an outlet of the second centrifugal pump (7) is connected with the second filtering tank (4) through a pipeline;

the liquid storage tank (5) is located below the second filtering tank (4), a liquid storage cavity for receiving filtrate of the second filtering tank (4) is formed in the liquid storage tank (5), a filtering bag (12) is arranged in the second filtering tank (4), and the filtering bag (12) is connected with the inner wall of the second filtering tank (4).

2. The zinc dross treatment device for the galvanizing process of the steel cord according to claim 1, wherein an injection pipe (13) for adding a sulfuric acid solution is arranged on the zinc dissolving tank (1), and a drainage pipe is connected to the bottom of the injection pipe (13).

3. The zinc slag treatment device for the galvanizing processing of the steel cord according to the claim 1 or the claim 2, characterized in that a stirring device is arranged above the reaction tank (2), the stirring device comprises a bracket (14), a stirring motor (15) and a stirring rod, the bracket (14) spans the reaction tank (2), the mounting end of the stirring motor (15) is connected with the bracket (14), and the stirring rod is connected with the output shaft of the stirring motor (15).

4. The zinc dross treatment device for the galvanizing processing of the steel cord according to claim 1, wherein an installation step is arranged on the inner wall of the first filtering tank (3), and the detachable filter screen (11) is connected with the installation step through a fastener.

5. The zinc dross treatment device for the galvanizing process of the steel cord according to claim 1, wherein a supporting frame (16) is arranged at the bottom of the second filtering tank (4), the liquid storage tank (5) is arranged at one side of the supporting frame (16), and a fine filtering tank (17) is arranged between the second filtering tank (4) and the liquid storage tank (5).

6. The zinc dross treatment device for steel cord galvanizing process according to claim 1, wherein the filter bag (12) is a non-woven fabric filter bag, and the edge of the non-woven fabric filter bag is hot-melt welded on the inner wall of the second filter tank (4).

7. The zinc dross treatment device for galvanization of steel cords according to claim 1, wherein the bottom of the liquid reservoir (5) is provided with a heating coil (18).

8. The dross treatment device of claim 7, wherein the heating coil (18) is arranged in a serpentine shape at the bottom of the reservoir (5).