Device for rapidly detecting sulfur content of concentrate

Abstract

The utility model discloses a device for rapidly detecting the sulfur content of concentrate, which comprises a closed sulfur determination absorber, a knob at the lower end of the closed sulfur determination absorber is connected with an absorption liquid storage bottle, the upper end of the closed sulfur determination absorber is connected with a basic burette, and the basic burette is externally connected with a sodium hydroxide standard liquid storage bottle; a distilled water storage bottle for washing is externally connected to the joint of the closed sulfur determination absorber and the carbon determination furnace; one side of the carbon determination furnace is connected with a second drying tower, the bottom of the second drying tower is connected with a second gas washing bottle, the second gas washing bottle is externally connected with a first drying tower, the bottom of the first drying tower is connected with a first gas washing bottle, the first gas washing bottle is connected with a buffer bottle, and the buffer bottle is externally connected with an air pump. According to the utility model, the open sulfur determination absorber is replaced by the closed sulfur determination absorber, and the washing branch pipe is additionally arranged, so that the application range of a combustion neutralization method is expanded to the determination of sulfur with the content of 0.01-50%, and one set of equipment and one method can meet the requirements of multiple sulfur determination, thereby not only improving the accuracy of an analysis result, but also saving the cost.

Description

Technical Field

[0001] This utility model relates to the field of sulfur content detection technology in concentrates, specifically a device for rapidly detecting sulfur content in concentrates. Background Technology

[0002] Production enterprises need to conduct chemical analysis on ores to guide enterprises in improving the grade of concentrates. The grade of concentrates mainly depends on the requirements of the raw ore and the production process. Adjusting the production process requires analyzing the ore medium to determine whether the raw ore and concentrate contain sulfur. The sulfur content must be measured by combustion iodometric titration. However, the accuracy and measurement range of combustion iodometric titration are no longer suitable for the current production needs and cannot meet the requirements for guiding the production of beneficiation plants.

[0003] To meet the production process requirements of the beneficiation plant and to better guide the process in improving concentrate grade, the laboratory purchases raw ore for testing of total sulfur content, available sulfur content, and other ore media. Previously, the laboratory used combustion iodometric titration, which is suitable for determining sulfur content in the range of 0.01% to 2%. However, due to the demands of modern production processes, it is necessary to test for sulfur content and available sulfur in ore waste residue with a sulfur content greater than 2% in the production process. Utility Model Content

[0004] The purpose of this invention is to provide a device for rapidly detecting the sulfur content of concentrates, which can improve the accuracy and precision of sulfur element analysis, expand the analysis range of sulfur, reduce costs, improve production efficiency, reduce environmental pollution, and improve the working environment, thereby overcoming the shortcomings of existing technologies.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A device for rapidly detecting the sulfur content of concentrate includes a closed-type sulfur absorber. A knob at the lower end of the closed-type sulfur absorber is connected to a storage bottle for adding hydrogen peroxide solution. A drain port at the lower end of the closed-type sulfur absorber is connected to a waste liquid bottle. An alkaline burette is connected to the upper end of the closed-type sulfur absorber, and a sodium hydroxide standard solution storage bottle is connected externally to the alkaline burette. One side of the closed-type sulfur absorber is connected to a carbon determination furnace via a three-tube ball joint, and a distilled water storage bottle for washing is connected externally to the three-tube ball joint. One side of the carbon determination furnace is connected to a second drying tower. The bottom of the second drying tower is connected to a second gas washing bottle containing sulfuric acid solution. A first drying tower is connected externally to the second gas washing bottle. The bottom of the first drying tower is connected to a first gas washing bottle containing potassium dichromate sulfuric acid washing solution. The first gas washing bottle is also connected to a buffer bottle used as an empty bottle, and an air pump is connected externally to the buffer bottle.

[0007] Furthermore, the carbon-fixing furnace is equipped with a temperature controller.

[0008] Furthermore, the second drying tower is used to hold silica gel and activated alumina.

[0009] Furthermore, the first drying tower contains granular soda lime or sodium hydroxide.

[0010] Compared with the prior art, the beneficial effects of this utility model are:

[0011] 1. The device for rapid detection of sulfur content in concentrate of this utility model replaces the open sulfur absorber with a closed sulfur absorber, which controls the amount of sulfur dioxide gas overflow and allows the sulfur dioxide gas to be fully absorbed and converted into sulfuric acid, making the analysis results faster and more accurate.

[0012] 2. The device for rapid detection of sulfur content in concentrate of this utility model is equipped with a flushing branch pipe to reduce the residual sulfur dioxide gas in the pipe, so that the sulfur dioxide gas can be quickly discharged from the pipe, thereby improving the accuracy and precision of sulfur element analysis results.

[0013] 3. This utility model has a wide range of applications and can be widely promoted. It is suitable for the determination of various ore media with sulfur content ranging from 0.01% to 50%, which improves the accuracy and precision of the beneficiation plant's production process and contributes to better guiding the beneficiation plant's production process. Attached Figure Description

[0014] Figure 1 This is a diagram showing the connection piping of the entire device of this utility model.

[0015] In the diagram: 1. Buffer bottle; 2. Air pump; 3. First gas washing bottle; 4. First drying tower; 5. Second gas washing bottle; 6. Second drying tower; 7. Carbon determination furnace; 8. Temperature controller; 9. Three-tube ball bearing; 10. Absorbent liquid storage bottle; 11. Distilled water storage bottle; 12. Waste liquid bottle; 13. Basic burette; 14. Sodium hydroxide standard solution storage bottle; 15. Closed-loop sulfur determination absorber. Detailed Implementation

[0016] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0017] To meet the production process requirements of beneficiation plants, and to better guide the process and improve concentrate grade, the laboratory has now added the determination of other ore media, such as the determination of total sulfur content and available sulfur content in waste residue and purchased raw ore. Previously, the laboratory used the combustion iodometric method, which is suitable for sulfur content of 0.01% to 2%. Due to the demands of modern production processes, it is necessary to test for sulfur content and available sulfur in ore waste residue and other media with sulfur content >2% in the production process. Through field practice, continuous summarization and refinement, this utility model provides a device for rapidly detecting the sulfur content of concentrate, such as... Figure 1 As shown, this utility model includes a closed-type sulfur absorber 15. A storage bottle 10 for adding hydrogen peroxide solution is connected to the knob at the lower end of the closed-type sulfur absorber 15. A waste liquid bottle 12 is connected to the drain port at the lower end of the closed-type sulfur absorber 15. An alkaline burette 13 is connected to the upper end of the closed-type sulfur absorber 15, and a sodium hydroxide standard solution storage bottle 14 is externally connected to the alkaline burette 13. One side of the closed-type sulfur absorber 15 is connected to a carbon determination furnace 7 via a three-tube ball joint 9, and a distilled water storage bottle 11 for washing is externally connected to the three-tube ball joint 9. One side of the carbon determination furnace 7 is connected to a second drying tower 6. The second drying tower 6 is used to hold silica gel and activated alumina. The bottom of the second drying tower 6 is connected to the second gas washing bottle 5, which contains sulfuric acid solution with a concentration of 1.84 g / mL. The second gas washing bottle 5 is connected to the first drying tower 4, which contains granular soda lime or sodium hydroxide. The bottom of the first drying tower 4 is connected to the first gas washing bottle 3, which contains potassium dichromate sulfuric acid washing solution. The first gas washing bottle 3 is also connected to the buffer bottle 1, which is used as an empty bottle. The buffer bottle 1 is connected to the air pump 2. The carbon-fixing furnace 7 is equipped with a temperature controller 8, which is used to monitor and control the temperature inside the carbon-fixing furnace 7 in real time.

[0018] In the above embodiments, the device for rapid detection of sulfur content in concentrates according to this invention provides a standard and guideline for the determination of sulfur in chemical analysis. It reduces the residue of sulfur dioxide gas in the tube, improving the accuracy and precision of the analytical results. In this device, by replacing the traditional open-type sulfur absorber with a closed-type sulfur absorber 15, the amount of sulfur dioxide gas overflow is controlled, allowing the sulfur dioxide gas to be quickly and fully absorbed and converted into sulfuric acid, thus making the analytical results faster and more accurate. Simultaneously, the addition of a distilled water storage bottle 11 connected to a flushing branch pipe to the device reduces the residue of sulfur dioxide gas in the tube, allowing the sulfur dioxide gas to be quickly discharged from the tube, improving the accuracy and precision of the sulfur element analysis results.

[0019] To further illustrate the above embodiments, this utility model also provides a method for rapidly detecting the sulfur content of concentrate, comprising the following steps:

[0020] S1: Rotate the knob at the lower end of the closed sulfur absorber 15 to add 40-60 mL of hydrogen peroxide absorbent from the absorbent storage bottle 10 into the closed sulfur absorber 15.

[0021] S2: Connect the power supply to the fixed carbon furnace 7 and the air pump 2, adjust the pressure of the air pump 2 to within the rated safe range, check the air tightness of the connecting hoses of the whole device and whether the airflow through the hoses is unobstructed, and ensure that the whole device is in good condition.

[0022] S3: Observe the furnace temperature during the combustion process of the carbon-fixing furnace 7. When the furnace temperature rises to the set temperature (1000-2500℃) (850℃ for effective sulfur and 1220℃ for total sulfur), start adding sodium hydroxide standard titration solution from the alkaline burette 13 until the hydrogen peroxide absorption solution just turns green and the green color remains stable. Then stop the gas supply.

[0023] S4: Weigh 0.1000g of the sample (0.5000g if the content is less than 1%; 0.0500g if the content is greater than 20%) into a heated porcelain boat and add 0.2g of linear copper oxide. Then, slowly push the porcelain boat containing the sample into the high-temperature part of the combustion tube, quickly seal it with a rubber stopper, preheat the device for 10-20 seconds, turn on the air pump 2 to ventilate for 5-8 minutes, and titrate the absorbent with sodium hydroxide standard titration solution until the bright green color remains stable and unchanged.

[0024] S5: Rinse the inlet pipe of the closed sulfur absorber 15 with water from the distilled water storage bottle 11, rinsing three times or more (in small amounts multiple times). If the absorbent in the closed sulfur absorber 15 changes color, continue titrating with sodium hydroxide standard titration solution until the bright green color remains stable.

[0025] S6: Remove the rubber stopper at the inlet of the combustion tube, take out the completely burned sample from the ceramic boat, rotate the knob at the lower end of the closed sulfur absorber 15 to discharge the absorbed liquid into the waste liquid bottle 12, and the program measurement is completed.

[0026] S7: The sulfur content of the sample can be calculated using chemical formulas.

[0027] After testing two experimental samples consecutively in S6 above, rotate the knob at the lower end of the closed-end sulfur absorber 15 to discharge the absorbed liquid into the waste liquid bottle 12.

[0028] In summary, this utility model improves upon the original equipment by replacing the open-type sulfur absorber with a closed-type sulfur absorber and adding a water washing branch pipe. The improved device expands the applicability of the combustion neutralization method to the determination of sulfur with a content of 0.01% to 50%. One set of equipment and one method can meet multiple sulfur determination needs, improve the accuracy of the analysis results, save costs, and better guide production.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the scope of the technology disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A device for rapid detection of sulphur content of a concentrate, characterized in that, The apparatus includes a closed-type sulfur absorber (15), with a knob at the lower end of the closed-type sulfur absorber (15) connected to an absorbent storage bottle (10) for adding hydrogen peroxide solution, a drain port at the lower end of the closed-type sulfur absorber (15) connected to a waste liquid bottle (12), and an alkaline burette (13) connected to the upper end of the closed-type sulfur absorber (15). A sodium hydroxide standard solution storage bottle (14) is connected externally to the alkaline burette (13). One side of the closed-type sulfur absorber (15) is connected to a carbon determination furnace (7) via a three-ball tube (9). A distilled water storage bottle (11) for washing is connected to the tube (9); one side of the fixed carbon furnace (7) is connected to the second drying tower (6), the bottom of the second drying tower (6) is connected to the second gas washing bottle (5) containing sulfuric acid solution, the second gas washing bottle (5) is connected to the first drying tower (4), the bottom of the first drying tower (4) is connected to the first gas washing bottle (3) containing potassium dichromate sulfuric acid washing solution, the first gas washing bottle (3) is also connected to the buffer bottle (1) used as an empty bottle, and the buffer bottle (1) is connected to the air pump (2).

2. A device for rapid determination of sulphur content of concentrates as claimed in claim 1, wherein: The carbon-fixing furnace (7) is equipped with a temperature controller (8).

3. A device for rapid determination of sulphur content of concentrates as claimed in claim 1, wherein: The second drying tower (6) is used to hold silica gel and activated alumina.

4. A device for rapid determination of sulphur content of concentrates as claimed in claim 1, wherein: The first drying tower (4) contains granular soda lime or sodium hydroxide.

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