Silicon-titanium powder mud cake microwave drying device

Abstract

The utility model discloses a silicon titanium powder mud cake microwave drying device which comprises a tunnel-shaped microwave resonance furnace, a strip-shaped conveying device, a mud cake scraper device, an air curtain machine, a negative pressure dust remover and a discharging box, the tunnel-shaped microwave resonance furnace is provided with a feeding port and a discharging port, the discharging port is connected with the discharging box in a sealed mode, and the strip-shaped conveying device comprises a conveying belt. The conveying belt penetrates through the tunnel-shaped microwave resonance furnace and extends into the discharging box, a mud cake scraper device is arranged in front of a feeding port of the tunnel-shaped microwave resonance furnace and located above the conveying belt, an air curtain machine is arranged above the feeding port of the tunnel-shaped microwave resonance furnace, an exhaust port above the tunnel-shaped microwave resonance furnace is connected with a negative-pressure dust remover, and the negative-pressure dust remover is connected with the conveying belt. And a negative pressure dust remover is arranged above the blanking box. The height of the mud cake is limited before the mud cake enters the microwave resonance furnace, and the negative pressure dust remover is additionally arranged in the drying process and the discharging process, so that the silicon-titanium powder mud cake can be rapidly dried, the environment is kept clean in the drying process, and the utilization rate of raw materials is high.

Description

Technical Field

[0001] This application relates to the field of drying equipment technology, specifically to a microwave drying device for silicon-titanium powder cake. Background Technology

[0002] The main functions of silicon-titanium powder as a fertilizer include promoting plant growth, increasing crop yield and quality, and enhancing crop disease resistance and adaptability. Silicon-titanium powder can promote root development, improve the plant's ability to absorb and utilize nutrients, thereby increasing crop yield and quality. It can also enhance crop disease resistance, reduce the occurrence of diseases, and ensure crop growth and yield.

[0003] The process of producing silicon-titanium powder in the factory involves ball milling silicon- and titanium-containing ores into a slurry using a ball mill, then using a filter press to remove most of the water to make mud cakes. The mud cakes need to be dried and then pulverized again before they can be used as fertilizer.

[0004] In the early days, due to the low demand for titanium dioxide powder, the powder cakes were typically dried naturally. However, as the demand for titanium dioxide powder increased, the current availability of suitable drying facilities has made drying the powder cakes using drying equipment a better option.

[0005] Microwave drying is a novel drying method. During drying, the microwaves rotate at a rate of 2.4 billion times per second, causing water molecules to oscillate at high speeds. This friction generates immense heat. When the object absorbs microwave energy and converts it into heat, its temperature rises, and the moisture within evaporates, resulting in dehydration. Because microwaves have penetrating properties, they heat the medium simultaneously from the inside out, eliminating the need for heat conduction, thus achieving extremely rapid heating. Furthermore, regardless of the object's shape, the simultaneous heating of the inside and outside minimizes the temperature difference between the material's interior and exterior, ensuring uniform heating and preventing the burnt exterior and undercooked interior that often occurs with conventional heating methods. This significantly improves the drying quality.

[0006] Existing silicon-titanium powder cakes are dried using microwaves. However, since silicon-titanium powder is finely ground by ball milling equipment, a large amount of dust is generated at the microwave outlet and inlet after the silicon-titanium powder cake passes through the microwave drying equipment. This damages the production environment and wastes a lot of raw materials. At the same time, due to placement issues, the silicon-titanium powder cakes entering the microwave drying equipment are sometimes stacked together, resulting in insufficient drying and requiring rework. Utility Model Content

[0007] In view of this, this application provides a microwave drying device for silicon-titanium powder cakes, which limits the height of the cakes before they enter the microwave resonant furnace and adds a negative pressure dust collector during the drying process and unloading. This not only allows for rapid drying of silicon-titanium powder cakes, but also maintains a clean environment during the drying process and achieves high raw material utilization.

[0008] According to one aspect of this application, one embodiment provides a microwave drying apparatus for silicon-titanium powder cakes, including a tunnel-shaped microwave resonant furnace, a belt conveyor, a cake scraper device, an air curtain machine, a negative pressure dust collector, and a feeding box. The tunnel-shaped microwave resonant furnace has an inlet and an outlet, the outlet being closedly connected to the feeding box. The belt conveyor includes a conveyor belt that passes through the tunnel-shaped microwave resonant furnace to the feeding box. A cake scraper device is provided in front of the inlet of the tunnel-shaped microwave resonant furnace, located above the conveyor belt. An air curtain machine is provided above the inlet of the tunnel-shaped microwave resonant furnace. An exhaust port above the tunnel-shaped microwave resonant furnace is connected to the negative pressure dust collector. A negative pressure dust collector is provided above the feeding box.

[0009] Furthermore, the conveyor belt is a flat conveyor belt, which is mounted on the conveyor frame outside the tunnel-shaped microwave resonant furnace.

[0010] Furthermore, the mud cake scraper device includes a V-shaped scraper and a scraper fixing frame. The scraper fixing frame is gantry-shaped and is mounted on the conveyor frame. The V-shaped scraper is mounted on the scraper fixing frame.

[0011] Furthermore, the V-shaped scraper includes a main scraper and a secondary scraper. The main scraper has an arc-shaped surface, and the secondary scrapers are located on the outermost sides of the V-shaped scraper. The bottom surface of the secondary scraper directly contacts the surface of the conveyor belt, scraping off a portion of the silicon-titanium powder cake near the edge of the conveyor belt from the conveyor belt.

[0012] Furthermore, the V-shaped scraper is made of metal or polymer material.

[0013] Furthermore, receiving containers are provided on both sides of the mud cake scraper device to collect the silicon-titanium powder mud cake scraped off by the mud cake scraper device.

[0014] Furthermore, the width of the air curtain of the air curtain machine is greater than the width of the feed inlet of the tunnel-shaped microwave resonant furnace.

[0015] Furthermore, the negative pressure dust collector connected to the exhaust port above the tunnel-shaped microwave resonant furnace is a negative pressure wet dust collector.

[0016] Furthermore, the negative pressure dust collector on the feeding box is a bag-type negative pressure dust collector, and the bag can collect silicon titanium powder dust.

[0017] Furthermore, a chute-shaped discharge port is provided below the feeding box, and the width of the discharge port is the same as the width of the conveyor belt.

[0018] The beneficial effects of this utility model are as follows:

[0019] This invention relates to a microwave drying device for silicon-titanium powder cakes. The negative pressure dust collector above the tunnel-shaped microwave resonant furnace is a negative pressure wet dust collector. This not only allows the water vapor generated by the microwave heating of the silicon-titanium powder cakes to be discharged from the exhaust port, but also extracts some dust. The negative pressure wet dust collector can simultaneously adsorb water vapor and dust, achieving a purification effect and preventing dust pollution. The dust slurry collected by the negative pressure wet dust collector can be filtered again through a filter press to produce silicon-titanium powder cakes for reuse, preventing waste of raw materials.

[0020] This utility model discloses a microwave drying device for silicon-titanium powder cakes. A negative pressure dust collector is installed above the feeding box, which can directly collect silicon-titanium powder dust. Since the collected silicon-titanium powder dust is in dry powder form, it can be used directly as fertilizer without being crushed by a pulverizer. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the mud cake scraper device of this utility model;

[0023] Figure 3 This is a schematic diagram of the structure of the V-shaped scraper of the mud cake scraper device of this utility model;

[0024] Figure 4 for Figure 3 Schematic diagram of the cross-sectional structure of the V-shaped scraper main scraper AA in the middle AA direction;

[0025] Figure 5 for Figure 3 Schematic diagram of the cross-sectional structure of the V-shaped scraper secondary scraper BB in the middle BB direction.

[0026] In the diagram: 1. Tunnel-shaped microwave resonant furnace; 2. Conveyor belt; 21. Conveyor frame; 3. Mud cake scraper device; 31. V-shaped scraper; 311. Main scraper; 312. Secondary scraper; 32. Scraper fixing frame; 4. Air curtain machine; 5. Feed box; 51. Discharge port; 6. Negative pressure dust collector. Detailed Implementation

[0027] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments. Similar elements in different embodiments are referred to by related similar element reference numerals. In the following embodiments, many details are described to facilitate a better understanding of the present application. However, those skilled in the art will readily recognize that some features may be omitted in different situations, or may be replaced by other elements, materials, or methods. In some cases, certain operations related to the present application are not shown or described in the specification. This is to avoid obscuring the core parts of the present application with excessive description. For those skilled in the art, detailed description of these related operations is not necessary; they can fully understand the related operations based on the description in the specification and general technical knowledge in the art.

[0028] Furthermore, the features, operations, or characteristics described in the specification can be combined in any suitable manner to form various embodiments, and the operational steps involved in each embodiment can also be rearranged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the specification and drawings are only for clearly describing a particular embodiment and do not imply that they represent the necessary components and / or order.

[0029] The serial numbers assigned to components in this document, such as "first" and "second," are used only to distinguish the described objects and have no sequential or technical meaning. The terms "connection" and "linkage" used in this application, unless otherwise specified, include both direct and indirect connections (linkages). Example

[0030] Please refer to Figures 1-5 According to one aspect of this application, one embodiment provides a microwave drying apparatus for silicon-titanium powder cakes, including a tunnel-shaped microwave resonant furnace 1, a belt conveyor, a cake scraper device 3, an air curtain machine 4, a negative pressure dust collector 6, and a feeding box 5.

[0031] The tunnel-shaped microwave resonant furnace 1 has a feed inlet and a discharge outlet, the discharge outlet being closedly connected to the unloading box. The belt conveyor includes a conveyor belt 2, which is a flat conveyor belt that passes through the tunnel-shaped microwave resonant furnace 1 into the unloading box 5. The conveyor belt 2 is mounted on a conveyor frame 21 outside the tunnel-shaped microwave resonant furnace 1.

[0032] A cake scraper device 3 is provided in front of the feed inlet of the tunnel-shaped microwave resonant furnace 1. The cake scraper device 3 is located above the conveyor belt 2 to prevent excessively thick or wide silicon-titanium powder cakes from entering the tunnel-shaped microwave resonant furnace 1, and to prevent excessively thick silicon-titanium powder cakes from failing to achieve the expected drying effect under normal microwave heating process.

[0033] The mud cake scraper device 3 includes a V-shaped scraper 31 and a scraper fixing frame 32. The V-shaped scraper 31 is made of polyurethane. The scraper fixing frame 32 is gate-shaped and is set on the conveyor frame. The V-shaped scraper is set on the scraper fixing frame 32. The scraper of the V-shaped scraper 31 includes a main scraper 311 and a secondary scraper 312. The surface of the main scraper 311 is arc-shaped. The secondary scraper 312 is located on the outermost two sides of the V-shaped scraper 31. The bottom surface of the secondary scraper 312 directly contacts the surface of the conveyor belt 2, scraping a portion of the silicon-titanium powder mud cake near the edge of the conveyor belt 2 off the conveyor belt 2.

[0034] A receiving container 7 is provided on both sides of the mud cake scraper device 3 to collect the silicon-titanium powder mud cake scraped off by the mud cake scraper device 3. The silicon-titanium powder mud cake in the receiving container 7 can be poured back onto the conveyor belt 2 for subsequent drying.

[0035] An air curtain machine 4 is installed above the feed inlet of the tunnel-shaped microwave resonant furnace 1. The width of the air curtain machine 4 is greater than the width of the feed inlet of the tunnel-shaped microwave resonant furnace 1. The air curtain machine 4 serves two purposes: first, to prevent the heat inside the tunnel-shaped microwave resonant furnace from escaping through the feed inlet as hot air; and second, to prevent the dust inside the tunnel-shaped microwave resonant furnace from escaping through the feed inlet. Under the blowing of the air curtain machine, a positive pressure is formed at the feed inlet.

[0036] The exhaust port above the tunnel-shaped microwave resonant furnace 1 is connected to a negative pressure dust collector 6. The negative pressure dust collector 6 connected to the exhaust port above the tunnel-shaped microwave resonant furnace 1 is a negative pressure wet dust collector. The negative pressure wet dust collector can simultaneously adsorb water vapor and dust, achieving a purification effect and preventing dust pollution. The dust slurry collected by the negative pressure wet dust collector can be filtered again through a filter press to make silicon titanium powder cake for reuse, preventing waste of raw materials.

[0037] The exhaust port above the tunnel-shaped microwave resonant furnace 1 can be connected to the same negative pressure wet dust collector via a branch pipe and main pipe.

[0038] A negative pressure dust collector 6 is installed above the feeding hopper 5. This is a bag-type negative pressure dust collector, where the filter bags directly collect silicon-titanium powder dust. Since the collected silicon-titanium powder dust is in dry powder form, it can be used directly as fertilizer without further pulverization. A chute-shaped discharge port 51 is located below the feeding hopper 5. The width of the discharge port 51 is the same as the width of the conveyor belt. The discharge port 51 discharges the dried silicon-titanium powder cake onto a suitable container or conveyor device, such as a ton bag or a belt conveyor.

[0039] This invention relates to a microwave drying device for silicon-titanium powder cakes. The silicon-titanium powder cakes, formed after filtration by a filter press, are placed on a conveyor belt. A cake scraper device scrapes the cake above the V-shaped scraper from the conveyor belt into a receiving container. Simultaneously, cakes at the edges of the conveyor belt are also scraped off, allowing the cakes within a certain height and range to smoothly enter a tunnel-shaped microwave resonant furnace. Under microwave heating, the silicon-titanium powder cakes are dried according to a specific process within a fixed time. During the drying process, dust is generated from the cake powder scraped off by the scraper device and from powder that falls off the cake itself during drying. This dust is collected by a negative pressure dust collector to ensure that no dust is generated and no pollution occurs.

[0040] This invention relates to a microwave drying device for silicon-titanium powder cakes. After heating silicon-titanium powder cakes with a moisture content of not less than 35%, the cakes can be dried to form silicon-titanium powder cakes with a moisture content of not more than 3%, and the drying time can be shortened to within 3 hours.

[0041] The above-described specific examples are for illustrative purposes only and are not intended to limit the scope of this invention. Those skilled in the art to which this invention pertains can make various simple deductions, modifications, or substitutions based on the concept of this invention.

Claims

1. A microwave drying device for silicon-titanium powder cake, characterized in that: The system includes a tunnel-shaped microwave resonant furnace (1), a belt conveyor, a mud cake scraper device (3), an air curtain machine (4), a negative pressure dust collector (6), and a feeding box (5). The tunnel-shaped microwave resonant furnace (1) has a feed inlet and a discharge outlet. The discharge outlet is closedly connected to the feeding box (5). The belt conveyor includes a conveyor belt (2). The conveyor belt (2) passes through the tunnel-shaped microwave resonant furnace (1) and extends into the feeding box (5). A mud cake scraper device (3) is provided in front of the feed inlet of the tunnel-shaped microwave resonant furnace (1). The mud cake scraper device (3) is located above the conveyor belt (2). An air curtain machine (4) is provided above the feed inlet of the tunnel-shaped microwave resonant furnace (1). The exhaust port above the tunnel-shaped microwave resonant furnace (1) is connected to the negative pressure dust collector (6). A negative pressure dust collector (6) is provided above the feeding box (5).

2. The microwave drying apparatus for silicon-titanium powder cake according to claim 1, characterized in that: The conveyor belt (2) is set on the conveyor frame (21) outside the tunnel-shaped microwave resonant furnace (1).

3. The microwave drying apparatus for silicon-titanium powder cake according to claim 1, characterized in that: The mud cake scraper device (3) includes a V-shaped scraper (31) and a scraper fixing frame (32). The scraper fixing frame (32) is gantry-shaped and is set on the conveyor frame (21). The V-shaped scraper (31) is set on the scraper fixing frame (32).

4. The microwave drying apparatus for silicon-titanium powder cake according to claim 3, characterized in that: The V-shaped scraper (31) includes a main scraper (311) and a secondary scraper (312). The main scraper (311) has an arc-shaped surface, and the secondary scraper (312) is located on the outermost sides of the V-shaped scraper (31). The bottom surface of the secondary scraper (312) is in direct contact with the surface of the conveyor belt (2).

5. The microwave drying apparatus for silicon-titanium powder cake according to claim 3, characterized in that: The V-shaped scraper (31) is made of metal or polymer material.

6. The microwave drying apparatus for silicon-titanium powder cake according to claim 1, characterized in that: Material receiving containers are provided on both sides of the mud cake scraper device (3).

7. The microwave drying apparatus for silicon-titanium powder cake according to claim 1, characterized in that: The width of the air curtain of the air curtain machine (4) is greater than the width of the feed inlet of the tunnel-shaped microwave resonant furnace.

8. The microwave drying apparatus for silicon-titanium powder cake according to claim 1, characterized in that: The negative pressure dust collector (6) connected to the exhaust port above the tunnel-shaped microwave resonant furnace (1) is a negative pressure wet dust collector.

9. The microwave drying apparatus for silicon-titanium powder cake according to claim 1, characterized in that: The negative pressure dust collector (6) on the feeding box (5) is a bag-type negative pressure dust collector.

10. The microwave drying apparatus for silicon-titanium powder cake according to claim 1, characterized in that: The material box (5) is provided with a slide-shaped discharge port (51) below it, and the width of the discharge port (51) is the same as the width of the conveyor belt (2).

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