CN214612686U

CN214612686U - Device for automatically adjusting sulfuric acid concentration

Info

Publication number: CN214612686U
Application number: CN202120389680.6U
Authority: CN
Inventors: 刘克洋; 张梅; 陆占清; 邹利明; 范茂盛; 张威; 闫建英; 张朝波
Original assignee: Yunnan Chihong Resources Comprehensive Utilization Co ltd
Current assignee: Yunnan Chihong Resources Comprehensive Utilization Co ltd
Priority date: 2021-02-22
Filing date: 2021-02-22
Publication date: 2021-11-05
Anticipated expiration: 2031-02-22

Abstract

The application provides a device of automatically regulated sulphuric acid concentration is applied to the neutral of hydrometallurgy zinc and leaches the in-process, is connected the installation with waste liquid conveyor's play liquid end, and the device includes: the waste liquid storage tank, the feed liquor pipe, drain pipe and reaction tank, the level gauge has been erect to waste liquid storage tank top, feed liquor pipe one end is connected with waste liquid conveyor, the other end is located waste liquid storage tank top, be provided with first motorised valve on the feed liquor pipe, drain pipe and reaction tank intercommunication, and be provided with the governing valve on the drain pipe, second motorised valve and flowmeter, be provided with the PH in the reaction tank and detect the meter, make the device can detect the PH value that the meter detected according to PH, the concentration of sulphuric acid in the automatically regulated reaction tank, it is slow to have avoided adjusting among the manual regulation process, the complicated scheduling problem of operation, the automation degree is high, adjust rapidly, it is accurate, and the production cost can be effectively reduced.

Description

Device for automatically adjusting sulfuric acid concentration

Technical Field

The application relates to the technical field of wet metallurgy, in particular to a device for automatically adjusting sulfuric acid concentration.

Background

The zinc hydrometallurgy mainly comprises the working procedures of roasting, leaching (leaching), leachate purification, electrodeposition and the like. After roasting, the zinc concentrate is subjected to neutral leaching by using electrolytic waste liquid to dissolve most of zinc oxide, and supernatant and underflow ore pulp are separated from the obtained ore pulp. And (4) after the supernatant is purified, electrodepositing to produce metal zinc, and casting into ingots. In the neutral leaching process, besides zinc enters the solution, metal impurities such as iron, arsenic, antimony, germanium and the like are dissolved to different degrees and enter the solution along with the zinc. These impurities can adversely affect the zinc electrodeposition process. Therefore, the concentration of sulfuric acid in the ore pulp needs to be well controlled in the neutral leaching and purification process, and the concentration of the sulfuric acid is usually adjusted by adding zinc electrolysis waste liquid.

At present, the concentration regulation process of sulfuric acid is manually operated, the operation is more complicated, timely response cannot be realized, the accuracy of sulfuric acid concentration control is easily influenced, and certain negative effects can be generated on the impurity purification effect.

Disclosure of Invention

In order to solve the defects in the prior art, the inventor provides a device capable of automatically adjusting the concentration of sulfuric acid in the leaching solution, so that the labor cost is greatly reduced, the operation is simple, the adjustment is rapid and convenient, and the production efficiency can be effectively improved.

Specifically, the present application is implemented as follows:

the utility model provides an automatic adjust device of sulphuric acid concentration, is connected the installation with the play liquid end of waste liquid conveyor, and the device includes: waste liquid storage tank, feed liquor pipe, drain pipe and reaction tank, waste liquid storage tank top has erect the level gauge, the one end and the waste liquid conveyor of feed liquor pipe are connected, and the other end is located waste liquid storage tank top, be provided with first motorised valve on the feed liquor pipe, drain pipe one end with waste liquid storage tank intercommunication, the other end with reaction tank intercommunication, the drain pipe is close to with waste liquid storage tank's intercommunication department the bottom of waste liquid storage tank, be provided with governing valve and second motorised valve on the drain pipe, be provided with the flowmeter between governing valve and the second motorised valve, be provided with the PH in the reaction tank and detect the meter.

Further, the apparatus further comprises: and the bottom of the overflowing liquid receiving disc is communicated with a first overflow pipe, the other end of the first overflow pipe is communicated with the reaction tank, and a third electric valve is arranged on the first overflow pipe.

Further, a storage tank overflow pipe is communicated with the side wall of the waste liquid storage tank close to the top, and the other end of the storage tank overflow pipe is communicated with the overflowing liquid storage tank; and the side wall of the overflowing liquid receiving disc is communicated with a second overflow pipe, the other end of the second overflow pipe is communicated with the overflowing liquid storage tank, and the overflow pipe of the storage tank and the second overflow pipe are provided with fourth electric valves.

Further, the first overflow pipe is disposed adjacent to the reaction tank.

Further, the reservoir overflow tube is on the same side as the second overflow tube.

Further, the level gauge is a radar level gauge.

Further, an electric stirrer is erected on the reaction tank.

Further, the apparatus further comprises: and the PLC is electrically connected with the liquid level meter, the regulating valve, the flowmeter, the PH detection meter, the electric stirrer, the first electric valve, the second electric valve, the third electric valve and the fourth electric valve.

The working principle of the application introduces:

the zinc electrolysis waste liquid is conveyed from an electrolysis workshop through the conveying device and flows into the waste liquid storage tank from the liquid inlet pipe for storage. When the liquid level meter detects that no waste liquid or less waste liquid exists in the waste liquid storage tank, the first electric valve on the liquid inlet pipe is opened, so that the waste liquid flows into the waste liquid storage tank; when the liquid level meter detects that the liquid level reaches the upper limit, the first electric valve on the liquid inlet pipe is closed, and the waste liquid stops flowing in. When a PH detector in the reaction tank detects that the PH value is too high (such as higher than 5.2), a second electric valve on the liquid outlet pipe is opened, so that the waste liquid in the waste liquid storage tank flows into the reaction tank, and the concentration of the sulfuric acid solution in the reaction tank is adjusted. When the solution in the waste liquid storage tank is too much, the waste liquid can spill over the diffuse liquid and connect the liquid dish, and the fourth motorised valve on the storage tank overflow pipe is opened simultaneously, and in the waste liquid flowed into the diffuse liquid storage tank, avoided the motorised valve on the feed liquor pipe to close untimely, lead to the condition that the waste liquid flowed out. In a similar way, the second overflow pipe on the side wall of the overflowing liquid receiving disc can effectively prevent the waste liquid in the overflowing liquid receiving disc from overflowing.

Compared with the prior art, the invention has the beneficial effects that:

(1) the application provides an automatically regulated sulphuric acid concentration's device controls the feed liquor, goes out the liquid through the motorised valve, simple structure, convenient operation, quick, changes the machine into by original through the manual regulation PH value and adjusts, has improved degree of mechanization, has reduced the cost of labor.

(2) Be equipped with governing valve and flowmeter on the drain pipe, the volume of the waste liquid that can accurate control flow in reaction tank is convenient for the accurate control concentration of sulphuric acid solution.

(3) The setting of diffuse liquid receiving disc and diffuse liquid storage tank can effectively avoid the waste liquid to spill over from the waste liquid storage tank, leads to the waste liquid to corrode equipment, causes serious accident even.

Drawings

FIG. 1 is a schematic structural diagram of an apparatus for automatically adjusting sulfuric acid concentration provided herein;

FIG. 2 is a schematic diagram of the structure of a reaction cell in the present application.

Reference numerals:

1-a waste liquid storage tank; 11-reservoir overflow; 2-liquid inlet pipe; 3-a liquid level meter; 4-a liquid outlet pipe; 41-regulating valve; 42-a flow meter; 5-a reaction tank; 51-PH detector; 52-electric stirrer; 6-liquid-overflowing liquid receiving disc; 61-a first overflow tube; 62-a second overflow tube; 7-a diffuse liquid storage tank; 81-first electrically operated valve; 82-second electrically operated valve; 83-third electrically operated valve; 84-fourth electrically operated valve.

Detailed Description

The present invention will be described in further detail with reference to the following detailed description and accompanying drawings. Wherein like elements in different embodiments are numbered with like associated elements. In the following description, numerous details are set forth in order to provide a better understanding of the present application. However, those skilled in the art will readily recognize that some of the features may be omitted or replaced with other elements, materials, methods in different instances. In some instances, certain operations related to the present application have not been shown or described in detail in order to avoid obscuring the core of the present application from excessive description, and it is not necessary for those skilled in the art to describe these operations in detail, so that they may be fully understood from the description in the specification and the general knowledge in the art.

Furthermore, the features, operations, or characteristics described in the specification may be combined in any suitable manner to form various embodiments. Also, the various steps or actions in the method descriptions may be transposed or transposed in order, as will be apparent to one of ordinary skill in the art. Thus, the various sequences in the specification and drawings are for the purpose of describing certain embodiments only and are not intended to imply a required sequence unless otherwise indicated where such sequence must be followed.

The numbering of the components as such, e.g., "first", "second", etc., is used herein only to distinguish the objects as described, and does not have any sequential or technical meaning. The term "connected" and "coupled" when used in this application, unless otherwise indicated, includes both direct and indirect connections (couplings).

It should be noted that the level gauge, the electric valve, the regulating valve, the flowmeter, the PH detector and the PLC controller described in this embodiment are all commercially available products, and the control method thereof is also a conventional technology that the inventor can write based on conventional technical means, industrial experience, and the utility model discloses an improvement, and this application does not relate to the improvement to the above-mentioned products.

Example 1

As shown in fig. 1, the present application provides an apparatus for automatically adjusting a sulfuric acid concentration, the apparatus including: waste liquid storage tank 1, feed liquor pipe 2, drain pipe 4 and

reaction tank

5, 1 top of waste liquid storage tank has erect level gauge 3, and level gauge 3 is used for measuring how much of waste liquid volume in the waste liquid storage tank 1, and preferably, level gauge 3 is the radar level gauge, measures accurate safety, the good reliability to probe and waste liquid contactless can not corroded by the waste liquid, can measure in succession simultaneously, accurately, fast. One end of the liquid inlet pipe 2 is connected with the waste liquid conveying device, and the other end of the liquid inlet pipe is positioned above the waste liquid storage tank 1, so that the zinc electrolysis waste liquid can be conveyed into the waste liquid storage tank 1 from an electrolysis workshop through the conveying device. The liquid inlet pipe 2 is provided with a first electric valve 81 capable of controlling the inflow of the waste liquid. Specifically, when the liquid level meter 3 detects that there is no waste liquid or there is little waste liquid in the waste liquid storage tank 1, the first electric valve 81 on the liquid inlet pipe 2 is opened to make the waste liquid flow into the waste liquid storage tank 1; when the liquid level meter 3 detects that the liquid level reaches the upper limit, the first electric valve 81 is closed, and the waste liquid stops flowing in. Drain pipe 4 one end and waste liquid storage tank 1 intercommunication, the other end and reaction tank 5 intercommunication to the bottom that drain pipe 2 and waste liquid storage tank 1's intercommunication department is close to waste liquid storage tank 1, the waste liquid of being convenient for flows. The liquid outlet pipe 2 is provided with a regulating valve 41 and a second electric valve 82, and the regulating valve 41 is used for controlling the inflow speed of the waste liquid so as to control the pH value in the reaction tank 5. A flow meter 42 is provided between the regulating valve 41 and the second electric valve 82, and the flow meter 42 is used for recording the amount of the waste liquid flowing into the reaction tank 5. Specifically, when the sulfuric acid solution in the reaction tank 5 needs to be adjusted to a specific PH value, the amount of the waste liquid that needs to flow in is calculated according to the specific PH value, the volume of the sulfuric acid solution in the reaction tank 5, the existing concentration and the concentration of the waste liquid, after the inflow amount of the waste liquid recorded by the flow meter 42 reaches the calculated volume, the adjusting valve 41 and the second electric valve 82 on the liquid outlet pipe 2 are closed, the inflow of the waste liquid is stopped, and the concentration of the sulfuric acid solution in the reaction tank 5 can be accurately adjusted. It should be noted that, the present application does not relate to an improvement in algorithm, and an algorithm for calculating the volume of waste liquid to be flowed belongs to common chemical knowledge and conventional technical means.

As shown in FIG. 2, a PH detector 52 is arranged in the reaction tank 5, and the PH detector 52 is used for detecting the PH value of the sulfuric acid solution in the reaction tank 5 in real time, so as to avoid that the technical and economic indexes of the zinc hydrometallurgy are influenced by overhigh or overlow PH value of the sulfuric acid solution in the reaction tank 5. The electric stirrer 52 is erected on the reaction tank 5, and the electric stirrer 52 is used for stirring the reaction tank 5, so that the reaction speed can be accelerated, the mixing of the solution and the waste liquid is facilitated, and the PH regulation speed is accelerated.

Further, the bottom of the waste liquid storage tank 1 is fixedly connected with a diffuse liquid receiving disc 6, and the diffuse liquid receiving disc 6 is used for receiving waste liquid overflowing from the top of the waste liquid storage tank 1. The bottom of the overflowing liquid receiving disc 6 is communicated with a first overflow pipe 61, the other end of the first overflow pipe 61 is communicated with the reaction tank 6, the first overflow pipe 61 is close to the reaction tank 5, the length of the first overflow pipe 61 can be reduced, and the cost is saved. Be provided with third motorised valve 83 on the first overflow pipe 61 for the waste liquid in the diffuse liquid receiving tray 6 also can flow into reaction tank 5, avoids the waste liquid to retrieve again after overflowing from waste liquid storage tank 1, improves labour cost. The side wall of the waste liquid storage tank 1 close to the top is communicated with a storage tank overflow pipe 11, the other end of the storage tank overflow pipe 11 is communicated with a diffusion liquid storage tank 7, the side wall of the diffusion liquid receiving disc 6 is communicated with a second overflow pipe 62, and the other end of the second overflow pipe 62 is communicated with the diffusion liquid storage tank 7. Be provided with fourth motorised valve 84 on storage tank overflow pipe 11 and the second overflow pipe 62, storage tank overflow pipe 11 sets up with second overflow pipe 62 homonymy, can effectively subtract the length of short storage tank overflow pipe 11 and second overflow pipe 62, reduce cost. The setting of diffuse liquid storage tank 7 can avoid overflowing after waste liquid storage tank 1, diffuse liquid meet the liquid dish 6 and fill the waste liquid in, or, first motorised valve 81 breaks down, can't close, leads to the waste liquid to spill over, corrodes equipment, sets up and takes place the production accident.

The present invention has been described in terms of specific examples, which are provided to aid understanding of the invention and are not intended to be limiting. For a person skilled in the art to which the invention pertains, several simple deductions, modifications or substitutions may be made according to the idea of the invention.

Claims

1. The utility model provides an automatic adjust device of sulphuric acid concentration, is connected the installation with waste liquid conveyor's play liquid end, includes: a waste liquid storage tank (1), a liquid inlet pipe (2), a liquid outlet pipe (4) and a reaction tank (5), it is characterized in that a liquid level meter (3) is arranged above the waste liquid storage tank (1), one end of the liquid inlet pipe (2) is connected with a waste liquid conveying device, the other end is positioned above the waste liquid storage tank (1), a first electric valve (81) is arranged on the liquid inlet pipe (2), one end of the liquid outlet pipe (4) is communicated with the waste liquid storage tank (1), the other end is communicated with the reaction tank (5), the communicating part of the liquid outlet pipe (4) and the waste liquid storage tank (1) is close to the bottom of the waste liquid storage tank (1), the liquid outlet pipe (4) is provided with a regulating valve (41) and a second electric valve (82), a flowmeter (42) is arranged between the regulating valve (41) and the second electric valve (82), and a PH detector (51) is arranged in the reaction tank (5).

2. The apparatus for automatically adjusting sulfuric acid concentration according to claim 1, further comprising: the overflow liquid receiving disc (6) is fixedly connected with the bottom of the waste liquid storage tank (1), a first overflow pipe (61) is communicated with the bottom of the overflow liquid receiving disc (6), the other end of the first overflow pipe (61) is communicated with the reaction tank (5), and a third electric valve (83) is arranged on the first overflow pipe (61).

3. The apparatus for automatically adjusting sulfuric acid concentration according to claim 2, wherein the side wall of the waste liquid storage tank (1) near the top is communicated with a storage tank overflow pipe (11), and the other end of the storage tank overflow pipe (11) is communicated with the overflow liquid storage tank (7); a second overflow pipe (62) is communicated with the side wall of the overflowing liquid receiving disc (6), the other end of the second overflow pipe (62) is communicated with the overflowing liquid storage tank (7), and a fourth electric valve (84) is arranged on the storage tank overflow pipe (11) and the second overflow pipe (62).

4. The apparatus for automatically adjusting sulfuric acid concentration according to claim 2, wherein the first overflow pipe (61) is disposed near the reaction tank (5).

5. The apparatus for automatically adjusting sulfuric acid concentration according to claim 3, wherein the overflow pipe (11) of the storage tank is on the same side as the second overflow pipe (62).

6. The device for automatically adjusting the sulfuric acid concentration according to claim 1, characterized in that the level gauge (3) is a radar level gauge.

7. The apparatus for automatically adjusting sulfuric acid concentration according to claim 3, wherein an electric stirrer (52) is erected on the reaction tank (5).

8. The apparatus for automatically adjusting sulfuric acid concentration according to claim 7, further comprising: and the PLC is electrically connected with the liquid level meter (3), the regulating valve (41), the flow meter (42), the PH detection meter (51), the electric stirrer (52), the first electric valve (81), the second electric valve (82), the third electric valve (83) and the fourth electric valve (84).