Feeding system of solid-liquid mixture for smelting

Abstract

The utility model discloses an adding system of a solid-liquid mixture for smelting, which comprises a stirring reaction kettle fixed on a foundation, a stirring motor is mounted at the bottom of the stirring reaction kettle, and the stirring motor is connected with a stirring paddle in the stirring reaction kettle; the top of the stirring reaction kettle is respectively connected with a corrosive liquid feeding pipe, a common liquid feeding pipe and a solid material discharging pipe, the corrosive liquid feeding pipe is provided with a first electronic flowmeter and a first program-controlled electromagnetic valve, the tail end of the corrosive liquid feeding pipe is connected with a corrosive liquid intermediate storage tank, the common liquid feeding pipe is provided with a second electronic flowmeter and a second program-controlled electromagnetic valve, and the solid material discharging pipe is connected with a second electronic flowmeter and a second program-controlled electromagnetic valve. The tail end of the common liquid feeding pipe is connected with a common liquid intermediate storage tank, and the tail end of the solid material discharging pipe is connected with a solid material feeder; a plurality of potential sensors are inserted into the side wall of the stirring reaction kettle and are annularly and alternately arranged up and down; the bottom of the stirring reaction kettle is further connected with a discharging pipe, and a third program control electromagnetic valve is installed on the discharging pipe.

Description

Technical Field

[0001] The utility model belongs to the technical field of nickel hydrometallurgy and relates to a mixing system for solid-liquid mixture for smelting. Background Art

[0002] In order to meet the production process requirements, the wet process workshop of the nickel smelter often needs to use a solid-liquid mixing device for batching and mixing. Before using the existing solid-liquid mixing device, it is necessary to first calculate the ratio between the solid and the liquid according to the capacity of the mixing tank, and then add the solid materials such as concentrate and the liquid materials such as hydrogen peroxide directly or through a delivery pump into the mixing tank to fully mix and stir the reaction, observe through the observation port or test with a test paper, and when the mixed reaction meets the requirements, it will be transported to the process for use. Because the liquid being transported is a hydrogen peroxide corrosive liquid, the personnel need to wear one-piece protective clothing during operation, and manually add the liquid barrel by barrel. Each time the ingredients are mixed, they will be soaked. The job has high labor intensity, is time-consuming and labor-intensive, and has low production efficiency.

[0003] At present, the wet process workshop of Jinchuan Nickel Smelter uses manual or old equipment to add materials. Most of the old equipment uses a single machine and single control device, that is, each mixing tank can only add corresponding materials. When two or more types of materials need to be added, they need to be added step by step. It is not easy to control the configuration ratio of solid and liquid materials, and the mixing and stirring reaction time of the solid-liquid mixture in the mixing tank is extremely dependent on the production experience of the post personnel. Once a misjudgment occurs, the entire production cycle will be lengthened, and it may also cause insufficient or excessive reaction. No matter which of the above reasons, it will affect the quality of the chemical reaction. With the increase in production demand, the production method of a single reaction tank can no longer meet production needs, which seriously limits the improvement of production efficiency. Utility Model Content

[0004] The utility model aims to provide a system for adding solid-liquid mixture for smelting, so as to solve the problems existing in the above-mentioned background technology and improve the feeding efficiency.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A system for adding solid-liquid mixture for smelting, comprising a stirred reactor fixed on a foundation, wherein a stirring motor is installed at the bottom of the stirred reactor, and the stirring motor is connected to a stirring paddle in the stirred reactor; a corrosive liquid feed pipe, a common liquid feed pipe and a solid material discharge pipe are respectively connected to the top of the stirred reactor, a first electronic flow meter and a first program-controlled electromagnetic valve are installed on the corrosive liquid feed pipe, and a corrosive liquid intermediate storage tank is connected to the end of the corrosive liquid feed pipe, a second electronic flow meter and a second program-controlled electromagnetic valve are installed on the common liquid feed pipe, and a common liquid intermediate storage tank is connected to the end of the common liquid feed pipe, and a solid feeder is connected to the end of the solid material discharge pipe; a plurality of potential sensors are inserted on the side wall of the stirred reactor, and the potential sensors are arranged alternately up and down in a ring shape; a discharge pipe is also connected to the bottom of the stirred reactor, and a third program-controlled electromagnetic valve is installed on the discharge pipe;

[0007] It also includes a PLC control system, which is respectively connected to the stirring motor, the first electronic flow meter, the first program-controlled solenoid valve, the second electronic flow meter, the second program-controlled solenoid valve, the third program-controlled solenoid valve, the potentiometer sensor and the solid feeder signal;

[0008] Working principle: Set the amount of corrosive liquid, ordinary liquid and solid material added and the reaction potential through the PLC control system, open the first program-controlled solenoid valve, the second program-controlled solenoid valve and the solid feeder to add materials to the stirred reactor simultaneously, and when the set amount of addition is reached, close the first program-controlled solenoid valve, the second program-controlled solenoid valve and the solid feeder, start the stirring motor, drive the stirring paddle to stir the reaction, and record the reaction potential measured by the potential sensor at the same time. When the set reaction potential is reached, turn off the stirring motor, the solid-liquid mixing reaction is complete, open the third program-controlled solenoid valve, and discharge it to the outside.

[0009] Compared with the prior art, the utility model has the following beneficial effects:

[0010] The device solves the problem of corrosive liquid splashing and injuring people when adding barrels of materials into the stirred reactor for configuration and the problem of uneven configuration and mixing. The device can automatically adjust the material amount according to the liquid control device and the solid control device to achieve synchronous, timed and quantitative addition of solid and liquid. To a certain extent, the device shortens the material addition cycle and improves the material reaction efficiency. Combined with the monitoring potential of the potential sensor, it avoids the problems of insufficient reaction and excessive reaction. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a structural schematic diagram of the system of the utility model.

[0012] In the figure, 1-stirring reactor, 2-stirring motor, 3-stirring paddle, 4-discharging pipe, 5-corrosive liquid feeding pipe, 6-ordinary liquid feeding pipe, 7-solid material discharge pipe, 8-first electronic flow meter, 9-first program-controlled solenoid valve, 10-corrosive liquid intermediate storage tank, 11-second electronic flow meter, 12-second program-controlled solenoid valve, 13-ordinary liquid intermediate storage tank, 14-potential sensor, 15-solid feeder, 16-third program-controlled solenoid valve. DETAILED DESCRIPTION

[0013] The present invention is further explained below in conjunction with the accompanying drawings and specific implementation methods.

[0014] like Figure 1 As shown, a system for adding solid-liquid mixture for smelting comprises a stirred reactor 1 fixed on a foundation, a stirring motor 2 is installed at the bottom of the stirred reactor 1, and the stirring motor 2 is connected to a stirring paddle 3 in the stirred reactor 1; a corrosion liquid feed pipe 5, a common liquid feed pipe 6 and a solid material discharge pipe 7 are respectively connected to the top of the stirred reactor 1, a first electronic flowmeter 8 and a first program-controlled electromagnetic valve 9 are installed on the corrosion liquid feed pipe 5, and a corrosion liquid intermediate storage tank 10 is connected to the end of the corrosion liquid feed pipe 5, a second electronic flowmeter 11 and a second program-controlled electromagnetic valve 12 are installed on the common liquid feed pipe 6, and a common liquid intermediate storage tank 13 is connected to the end of the common liquid feed pipe 6, and a solid feeder 15 is connected to the end of the solid material discharge pipe 7; a plurality of potential sensors 14 are inserted on the side wall of the stirred reactor 1, and the potential sensors 14 are arranged alternately up and down in a ring shape; a discharge pipe 4 is also connected to the bottom of the stirred reactor 1, and a third program-controlled electromagnetic valve 16 is installed on the discharge pipe 4;

[0015] It also includes a PLC control system, which is respectively connected to the stirring motor 2, the first electronic flow meter 8, the first programmable solenoid valve 9, the second electronic flow meter 11, the second programmable solenoid valve 12, the third programmable solenoid valve 16, the potentiometer sensor 14 and the solid feeder 15 for signals.

[0016] In the above device structure, the solid feeder adopts the solid feeder used in the existing reactor to achieve quantitative addition of solid materials; the corrosive liquid and the ordinary liquid are fed respectively by the corrosive liquid feed pipe (plastic pipe) and the ordinary liquid feed pipe (iron pipe), thereby avoiding pipeline corrosion and early mixed liquid reaction; and the corrosive liquid intermediate storage tank and the ordinary liquid intermediate storage tank can be set in multiple according to the process conditions, which is not limited here.

[0017] Taking nickel metallurgy as an example, the use of the solid-liquid mixture adding system of the utility model is further explained.

[0018] In this example, the corrosive liquid is hydrogen peroxide (H2O2). Ordinary liquids are industrial water (H2O), anolyte (containing As 3+ , Fe 2+), nickel carbonate solution (NiCO3), the three liquid materials are added to different common liquid intermediate storage tanks. Solid material: solid granular materials such as concentrate, copper slag or a mixture of the two.

[0019] First, the amount of corrosive liquid, ordinary liquid and solid material added and the reaction potential are set through the PLC control system, and the first program-controlled solenoid valve 9, the second program-controlled solenoid valve 12 and the solid feeder 15 are opened to synchronously feed the materials into the stirred reactor. During the feeding process, the first electronic flowmeter 8 and the second electronic flowmeter 11 respectively feedback the cumulative amount of corrosive liquid and ordinary liquid added, and the cumulative amount of solid material added can be known through the speed of the feeding motor and the feeding time of the solid feeder 15; after reaching the set amount of addition, the first program-controlled solenoid valve 9, the second program-controlled solenoid valve 12 and the solid feeder 15 are closed, and the stirring motor 2 is started to drive the stirring paddle 3 to perform a mixed stirring reaction, and at the same time, the reaction potentials measured by multiple potential sensors 14 are continuously collected for comparison and correction (because the multiple potential sensors 14 are arranged in an annular manner up and down along the side wall of the stirred reactor 1, the accuracy of the potential measurement during the reaction process is guaranteed); when the monitored potential average reaches the set reaction potential or is within the range of 1% above and below, the stirring motor 2 is closed, and at this time, the solid-liquid reaction is complete, and the third program-controlled solenoid valve 16 is opened to discharge outward, and enter the next process.

[0020] In summary, the device of the utility model can realize the timed and quantitative addition of multiple types of materials for mixing reaction, has good mixing effect, shortens the material addition cycle, improves production efficiency, and solves the problem of insufficient reaction or excessive reaction caused by the stirring reaction of solid materials with a large amount of solution; at the same time, it solves the problems of uneven configuration and splashing of corrosive liquids when adding ingredients barrel by barrel for mixing manually, simplifies and shortens the addition process of different types of materials, and has good practicality.

Claims

1. A system for adding solid-liquid mixture for smelting, characterized in that: The invention comprises a stirred reactor (1) fixed on a foundation, wherein a stirring motor (2) is installed at the bottom of the stirred reactor (1), and the stirring motor (2) is connected to a stirring paddle (3) in the stirred reactor (1); a corrosion liquid feed pipe (5), a common liquid feed pipe (6) and a solid material discharge pipe (7) are respectively connected to the top of the stirred reactor (1); a first electronic flow meter (8) and a first program-controlled electromagnetic valve (9) are installed on the corrosion liquid feed pipe (5), and a corrosion liquid intermediate storage tank (10) is connected to the end of the corrosion liquid feed pipe (5); a second electronic flow meter (11) and a second program-controlled electromagnetic valve (12) are installed on the common liquid feed pipe (6), and a common liquid intermediate storage tank (13) is connected to the end of the common liquid feed pipe (6), and a solid material discharge pipe (7) is connected to a solid feeder (15); a plurality of potential sensors (14) are inserted on the side wall of the stirred reactor (1), and the potential sensors (14) are arranged alternately up and down in a ring shape.

2. A system for adding solid-liquid mixture for smelting as claimed in claim 1, characterized in that: It also includes a PLC control system, which is respectively connected to the stirring motor (2), the first electronic flow meter (8), the first program-controlled solenoid valve (9), the second electronic flow meter (11), the second program-controlled solenoid valve (12), the potential sensor (14) and the solid feeder (15) by signals.

3. A system for adding solid-liquid mixture for smelting as claimed in claim 2, characterized in that: The bottom of the stirred reactor (1) is also connected to a discharge pipe (4), and a third program-controlled solenoid valve (16) is installed on the discharge pipe (4). The third program-controlled solenoid valve (16) is connected to a PLC control system signal.

Images