High-shear dispersion emulsifying machine for sodium fluoride purification

Abstract

The utility model relates to the technical field of sodium fluoride purification, in particular to a high-shear dispersion emulsifying machine for sodium fluoride purification, which comprises a purification box and an access cover plate, and an ultrasonic transmitter and a temperature adjusting rod are arranged in the purification box; the maintenance cover plate is connected with an ultrasonic generator and a high-shear dispersion emulsifying machine; the method has the beneficial effects that a set amount of process water and alkali liquor are supplemented into the purification box in advance, solid-phase sodium fluoride is added into the purification box, the solution is subjected to high-speed shearing and stirring at a proper frequency, the temperature of the solution is increased to 80 DEG C, and meanwhile, the solution is oscillated for 30 minutes through ultrasonic waves; the modulus of the solution is reduced, and the content of sodium fluosilicate and silicon dioxide wrapped in sodium fluoride in the solution is reduced; the solution is discharged from the discharging pipe and then is subjected to solid-liquid separation, the liquid phase is used for the front-end process, and the solid-phase sodium fluoride is subjected to water washing, shearing and ultrasonic oscillation again, so that the purification effect of the sodium fluoride is improved, and the quality of the sodium fluoride is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sodium fluoride purification, in particular to a high shear dispersing emulsifier for sodium fluoride purification. Background Art

[0002] Sodium fluoride (NaF) is an important chemical raw material with a wide range of uses. It is the main source of fluoride ions in many fluoride compounds. Compared with potassium fluoride, it is not only cheaper, but also less prone to deliquescence. Main uses: as a raw material for the manufacture of other fluorides; used as agricultural pesticides and bactericides; also as a wood preservative, water treatment agent, light metal fluoride salt treatment agent, smelting and refining protective agent, and UF3 adsorbent in the nuclear industry; cleaning fluid, flux and welding agent for steel and other metals; flux and sunscreen for ceramics, glass and enamel, hide and skin treatment agent for the leather industry; preservative for adhesives; as a phosphating accelerator in the surface treatment of ferrous metals to stabilize the phosphating solution and improve the performance of the phosphating film; as an additive in the production of sealing materials and brake pads to increase wear resistance; as a flux in the steel inlay of mechanical tools to increase welding strength; as an additive in concrete to enhance the corrosion resistance of concrete.

[0003] There are great safety and environmental issues in the storage of silicon dioxide; the contradiction between the increasing inventory of by-product fluorine-containing silicon slag and the resource utilization and value of fluorine-containing silicon slag is becoming increasingly prominent; currently most of the fluorine-containing silicon slag can only be piled up due to the lack of high-value utilization technology, which not only wastes resources, but also affects the production and operation of anhydrous hydrogen fluoride.

[0004] However, the current technology for producing sodium silicate and sodium fluoride by reacting silicon dioxide with sodium hydroxide is not yet mature. When fluorine-containing silicon slag reacts with sodium hydroxide, sodium fluoride, silicon dioxide, sodium silicate, sodium fluorosilicate, etc. are generated. The reaction is very violent. The produced sodium fluoride is wrapped with sodium fluorosilicate and silicon dioxide. It is difficult to purify sodium fluoride, resulting in lower quality of sodium fluoride products, which affects the continuation of the process. Utility Model Content

[0005] The utility model aims to provide a high shear dispersing emulsifier for purifying sodium fluoride to solve the problems raised in the above-mentioned background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a high shear dispersing emulsifier for purifying sodium fluoride, the high shear dispersing emulsifier for purifying sodium fluoride comprising:

[0007] A purification box, wherein the purification box is connected to a charging cover plate, a temperature measuring instrument, a liquid level measuring instrument and a pressure measuring instrument are arranged on the upper side of one end of the purification box, the liquid level measuring instrument is connected to a connecting pipe, and an ultrasonic transmitter and a temperature regulating rod are arranged inside the purification box;

[0008] The inspection cover is connected to the purification box, and the inspection cover is connected to an ultrasonic generator and a high shear dispersing emulsifier.

[0009] Preferably, legs are provided at the four corners of the lower end of the purification box, a hinge is connected to a side wall on one side of the upper end of the purification box, and the purification box is rotatably connected to one end of the feeding cover plate through the hinge.

[0010] Preferably, the temperature measuring instrument, the liquid level measuring instrument and the pressure measuring instrument are fixedly connected to the upper side wall of the purification box, and the temperature measuring instrument, the liquid level measuring instrument and the pressure measuring instrument are located on one side of the feeding cover plate.

[0011] Preferably, the inner wall at one end of the purification box is fixedly connected to the temperature regulating rod, and the inner wall of the purification box at one side of the pressure measuring instrument is fixedly connected to the ultrasonic transmitter.

[0012] Preferably, the connecting pipe is located inside the purification box, and one end of the connecting pipe is fixedly connected to the liquid level measuring instrument.

[0013] Preferably, the inspection cover is fixedly connected to the purification box by a plurality of bolts, the upper end of the inspection cover is fixedly connected to the ultrasonic generator, and a discharge pipe is provided on the lower side wall of the purification box at one end away from the temperature regulating rod.

[0014] Preferably, the lower end of the inspection cover is fixedly connected to the high shear dispersing emulsifier.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] A set amount of process water and alkali solution is added to the purification box in advance through the feeding cover plate, and solid phase sodium fluoride is added into the purification box. The solution is subjected to high-speed shear stirring by a high-shear dispersing emulsifier of appropriate frequency, and the solution is heated to 80°C by a temperature regulating rod, and the solution is vibrated for 30 minutes by an ultrasonic transmitter; the modulus of the solution is reduced, and the content of sodium fluorosilicate and silicon dioxide contained in the sodium fluoride in the solution is reduced; the solution is discharged from the discharge pipe and then solid-liquid separation is carried out, the liquid phase is used for the front-end process, and the solid phase sodium fluoride is washed, sheared, and ultrasonically vibrated again, so as to increase the purification effect of sodium fluoride, improve the quality of sodium fluoride products, and ensure the continuation of the process. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the internal structure of the purification box of the utility model;

[0019] Figure 3 This is the process flow chart of the utility model.

[0020] In the figure: 1. Purification box; 2. Feeding cover; 3. Temperature measuring instrument; 4. Liquid level measuring instrument; 5. Pressure measuring instrument; 6. Ultrasonic generator; 7. Inspection cover; 8. Hinge; 9. Support leg; 10. Discharge pipe; 11. High shear dispersing emulsifier; 12. Ultrasonic transmitter; 13. Connecting pipe; 14. Temperature regulating rod. DETAILED DESCRIPTION

[0021] In order to make the purpose and technical solution of the utility model clearly and completely described, and the advantages more clearly understood, the embodiments of the utility model are further described in detail in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are part of the embodiments of the utility model, not all of the embodiments, and are only used to explain the embodiments of the utility model, and are not used to limit the embodiments of the utility model. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Embodiment 1:

[0023] See also Figure 1-Figure 3 The utility model provides a technical solution: a high shear dispersing emulsifier for purifying sodium fluoride, the high shear dispersing emulsifier for purifying sodium fluoride comprises:

[0024] A purification box 1, the purification box 1 is connected to a charging cover plate 2, a temperature measuring instrument 3, a liquid level measuring instrument 4 and a pressure measuring instrument 5 are arranged on the upper side of one end of the purification box 1, the liquid level measuring instrument 4 is connected to a connecting pipe 13, and an ultrasonic transmitter 12 and a temperature regulating rod 14 are arranged inside the purification box 1; legs 9 are arranged at the four corners of the lower end of the purification box 1, a hinge 8 is connected to a side wall on one side of the upper end of the purification box 1, and the purification box 1 is rotatably connected to one end of the charging cover plate 2 through the hinge 8; the temperature measuring instrument 3, the liquid level measuring instrument 4 and the pressure measuring instrument 5 are fixedly connected to the upper side wall of the purification box 1, and the temperature measuring instrument 3, the liquid level measuring instrument 4 and the pressure measuring instrument 5 are located on one side of the charging cover plate 2; the connecting pipe 13 is located inside the purification box 1, and one end of the connecting pipe 13 is fixedly connected to the liquid level measuring instrument 4;

[0025] A set amount of process water and alkali solution is added to the purification box 1 in advance through the charging cover plate 2, and solid phase sodium fluoride is added into the purification box 1. The solution is subjected to high-speed shear stirring by a high-shear dispersing emulsifier 11 of appropriate frequency, and the solution is heated to 80° C. by a temperature regulating rod 14, and the solution is vibrated for 30 minutes by an ultrasonic transmitter 12; the modulus of the solution is reduced, and the content of sodium fluorosilicate and silicon dioxide contained in the sodium fluoride in the solution is reduced; the solution is discharged from the discharge pipe 10 and then solid-liquid separation is performed, the liquid phase is used for the front-end process, and the solid phase sodium fluoride is washed, sheared, and ultrasonically vibrated again. In addition, the height of the solution inside the purification box 1 can be timely observed by a liquid level measuring instrument and a connecting pipe 13, and the pressure inside the box can be detected by a pressure measuring instrument 5.

[0026] Embodiment 2:

[0027] On the basis of the first embodiment, it also includes an inspection cover plate 7, which is connected to the purification box 1, and the inspection cover plate 7 is connected to the ultrasonic generator 6 and the high shear dispersing emulsifier 11; the inspection cover plate 7 is fixedly connected to the purification box 1 by a plurality of bolts, the upper end of the inspection cover plate 7 is fixedly connected to the ultrasonic generator 6, and the lower side wall of the end of the purification box 1 away from the temperature regulating rod 14 is provided with a discharge pipe 10; the lower end of the inspection cover plate 7 is fixedly connected to the high shear dispersing emulsifier 11;

[0028] The inspection cover plate 7 and the purification box 1 can be disassembled by bolts, so that the high shear dispersing emulsifier 11 can be easily repaired, and the ultrasonic frequency inside the box can be observed by the ultrasonic generator 6.

[0029] Embodiment three:

[0030] On the basis of the first embodiment, in order to facilitate the control of the temperature inside the purification box 1, the inner wall of one end of the purification box 1 is fixedly connected to the temperature regulating rod 14, and the inner wall of the purification box 1 on one side of the pressure measuring instrument 5 is fixedly connected to the ultrasonic transmitter 12;

[0031] The temperature regulating rod 14 is connected to an external power source, so that the temperature of the solution inside the purification box 1 can be regulated, and the liquid temperature can be observed through the temperature measuring instrument 3.

[0032] Embodiment 4:

[0033] Process operation:

[0034] Based on the process data, experience and product delivery inspection analysis during the silicate trial production, the factors affecting the low quality of sodium silicate and sodium fluoride products were determined. Through equipment inspection, selection and experimental demonstration, suitable purification equipment and processes were found, and the relationship between equipment operating parameters, material reaction time, temperature and pressure was explored. In the production of silicates, a process device that can reduce the content of sodium fluorosilicate and silicon dioxide contained in sodium fluoride and improve the purity of sodium fluoride was optimized and explored;

[0035] Fluorine-containing silicon dioxide (fluosilicic acid content: 10%, silicon dioxide: 30%, water: 60%) and alkali solution (sodium hydroxide content: 30%) are stirred in a certain ratio and heated to 105°C. Sodium fluoride and sodium silicate produced after complete reaction are subjected to solid-liquid separation and purification by separation equipment; the liquid phase sodium silicate is concentrated and sold, and the solid phase sodium fluoride is purified in a sodium fluoride purification device; the sodium fluoride content and impurity content are within normal ranges (reaching the first-grade product of YS / T517-2009 standard or above), thereby achieving the purpose of purifying sodium fluoride.

[0036] In actual use, a set amount of process water and alkali solution is added to the purification box 1 in advance through the feeding cover plate 2, and solid phase sodium fluoride is added into the purification box 1, the solution is subjected to high-speed shear stirring by a high-shear dispersing emulsifier 11 of appropriate frequency, and the solution is heated to 80° C. by a temperature regulating rod 14, and the solution is vibrated for 30 minutes by an ultrasonic transmitter 12; the modulus of the solution is reduced, and the content of sodium fluorosilicate and silicon dioxide contained in the sodium fluoride in the solution is reduced; the solution is discharged from the discharge pipe 10 and then solid-liquid separation is performed, the liquid phase is used for the front-end process, and the solid phase sodium fluoride is washed, sheared, and ultrasonically vibrated again.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A high shear dispersing emulsifier for sodium fluoride purification, Features: The high shear dispersing emulsifier for purifying sodium fluoride comprises: A purification box (1), the purification box (1) is connected to a charging cover plate (2), a temperature measuring instrument (3), a liquid level measuring instrument (4) and a pressure measuring instrument (5) are provided on the upper side of one end of the purification box (1), the liquid level measuring instrument (4) is connected to a connecting pipe (13), and an ultrasonic transmitter (12) and a temperature regulating rod (14) are provided inside the purification box (1); The inspection cover plate (7) is connected to the purification box (1), and the inspection cover plate (7) is connected to an ultrasonic generator (6) and a high-shear dispersing emulsifier (11).

2. A high shear dispersing emulsifier for sodium fluoride purification according to claim 1, Features: The four corners of the lower end of the purification box (1) are provided with supporting legs (9), and a hinge (8) is connected to a side wall on one side of the upper end of the purification box (1). The purification box (1) is rotatably connected to one end of the feeding cover plate (2) via the hinge (8).

3. A high shear dispersing emulsifier for purifying sodium fluoride according to claim 1, Features: The temperature measuring instrument (3), the liquid level measuring instrument (4) and the pressure measuring instrument (5) are fixedly connected to the upper side wall of the purification box (1), and the temperature measuring instrument (3), the liquid level measuring instrument (4) and the pressure measuring instrument (5) are located on one side of the feeding cover plate (2).

4. A high shear dispersing emulsifier for purifying sodium fluoride according to claim 1, Features: The inner wall at one end of the purification box (1) is fixedly connected to a temperature regulating rod (14), and the inner wall at one side of the purification box (1) is fixedly connected to an ultrasonic transmitter (12).

5. A high shear dispersing emulsifier for purifying sodium fluoride according to claim 1, Features: The connecting pipe (13) is located inside the purification box (1), and one end of the connecting pipe (13) is fixedly connected to the liquid level measuring instrument (4).

6. A high shear dispersing emulsifier for purifying sodium fluoride according to claim 1, Features: The inspection cover plate (7) is fixedly connected to the purification box (1) by means of a plurality of bolts, the upper end of the inspection cover plate (7) is fixedly connected to the ultrasonic generator (6), and a discharge pipe (10) is provided on the lower side wall of the purification box (1) at one end away from the temperature regulating rod (14).

7. A high shear dispersing emulsifier for purifying sodium fluoride according to claim 1, Features: The lower end of the inspection cover plate (7) is fixedly connected to the high shear dispersing emulsifier (11).

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