Mica melting synthesis device and method

Abstract

The invention relates to the technical field of synthetic mica, in particular to a synthetic mica melting device and method.The synthetic mica melting device comprises a base and a melting furnace, a feeding device is arranged on the base, the feeding device comprises a feeding unit and a conveying unit, a melting device is arranged in the melting furnace, and the feeding unit is connected with the melting device; the founding device comprises a heat preservation and insulation unit and a founding unit. According to the device and method for melting and synthesizing the mica, compared with a traditional internal heating method, the melting process needs 50-55 h, the dynamic melting process only needs 10-15 h, the heat transfer effect is better, the heat conversion rate is higher, due to the fact that the device adopts the dynamic melting process, the transmission and mass transfer effects are good, the heating and heat preservation device is arranged in the furnace body, the five raw materials can be completely molten, and the production cost is reduced. An exhaust outlet is small, continuous operation can be realized, an environment-friendly treatment device can be externally connected, the environment is not polluted, energy is saved, the environment is protected, the yield is 85-90%, the furnace body can be recycled, and solid waste is not generated.

Description

Technical Field

[0001] The invention relates to the technical field of synthetic mica, in particular to a device and method for melting synthetic mica. Background Art

[0002] Synthetic mica is also called fluorphlogopite. It is made from chemical raw materials through high-temperature melting, cooling and crystallization. The molecular formula of its single crystal is KMg3(AlSi3O10)F2, which belongs to the monoclinic system and is a typical layered silicate. The traditional method of melting and cooling synthetic mica is called the internal heat method. As the name suggests, it is made by high-temperature internal melting and cooling.

[0003] However, the traditional internal heat method is to melt and crystallize in the same furnace, with intermittent operation, high energy consumption, low energy utilization, and low heat transfer efficiency. Heat is transferred from the inside to the surroundings, and the heating time is as long as 50-55 hours. In the high-temperature process, the exhaust is disordered, fluoride and powder are discharged, the internal temperature is uneven, and the raw materials at the edge of the furnace are not completely melted, resulting in a large number of "triangular pieces", furnace skin materials cannot be avoided, and the yield of synthetic mica sheets is low, only 75%-80%. After the operation is completed, 1 / 3 of the refractory bricks cannot be recycled, and there are many solid wastes.

[0004] Therefore, we urgently need to provide a device and method for melting synthetic mica. Summary of the invention

[0005] The object of the present invention is to provide a device and method for melting synthetic mica, so as to solve the problems proposed in the above-mentioned background technology that the traditional internal heating method of melting and crystallization is carried out in the same furnace body, the operation is intermittent, the energy consumption is high and the energy utilization rate is low, the heat transfer efficiency is low, the heat is transferred from the inside to the surroundings, the heating time is as long as 50-55 hours, and the exhaust is disordered during the high temperature process, fluoride and powder are discharged, the internal temperature is uneven, the raw materials at the edge of the furnace body are not completely melted, resulting in a large number of "triangular pieces" and a low material collection rate.

[0006] To achieve the above objectives, the present invention provides the following technical solutions: a device for melting synthetic mica, comprising a base and a melting furnace, wherein the melting furnace is arranged on the right side of the base, a feeding device is arranged on the base, and a melting device is arranged inside the melting furnace.

[0007] The feeding device comprises a loading unit and a conveying unit.

[0008] The loading unit includes a loading pipe, a loading hopper, and a feeding pipe. The loading pipe is obliquely installed on the top of the base, the loading hopper is fixedly connected to the top of the bottom of the outer surface of the loading pipe, and the feeding pipe is fixedly connected to the bottom of the outer surface of the loading pipe, and its bottom extends into the interior of the melting furnace.

[0009] A further improvement is that the feeding motor, the rotating shaft, and the feeding auger are: the feeding motor is installed on the top of the feeding pipe, the top of the rotating shaft is connected to the output end of the feeding motor, and the bottom thereof extends into the inner bottom of the feeding pipe, and the feeding auger is fixedly connected to the outer surface of the rotating shaft.

[0010] A further improvement is that the melting device includes a heat preservation and insulation unit and a melting unit.

[0011] The thermal insulation unit includes magnesium carbon refractory bricks, a thermal insulation layer, and a graphite liner. The melting furnace is paved with magnesium carbon refractory bricks, the thermal insulation layer is laid inside the magnesium carbon refractory bricks, and the graphite liner is installed inside the thermal insulation layer.

[0012] A further improvement is that the heat insulation layer is made of zirconium-containing glass fiber wool, a graphite electrode is provided at the bottom of the graphite liner, and the graphite electrode extends to the outside of the melting furnace.

[0013] A further improvement is that the melting unit includes silicon-molybdenum rods, carbon fiber plates, and overflow pipes. A plurality of silicon-molybdenum rods are respectively installed on the top of the melting furnace, and their bottoms extend into the interior of the melting furnace. The carbon fiber plate is installed on the right side of the top of the melting furnace, and its bottom extends into the upper part of the inner bottom of the melting furnace. The overflow pipe is fixedly connected to the upper middle part of the right outer surface of the melting furnace.

[0014] A method for melting synthetic mica comprises the following steps: S1: First, quartz sand, alumina, fused magnesia, potassium fluorosilicate and potassium carbonate are mixed in proportion and put into the interior of the upper hopper, and then the feeding motor is started to drive the rotating shaft to rotate, and then the feeding auger on the outer surface of the rotating shaft is driven to rotate, and the mixed material inside the feeding pipe is transported from the bottom to the top, and discharged into the interior of the melting furnace from the feeding pipe at the top of the feeding pipe.

[0015] S2: The materials to be mixed enter the interior of the melting furnace, and then the busbar (with low voltage and high current) after transformation by the transformer is connected to the graphite electrode at the bottom of the melting furnace. The graphite electrode generates heat, resulting in an arc reaction, which melts the mixed materials into liquid. Its rated power is 450-550KW, the heating temperature of the electrode center is 1450-1700℃, and the temperature of the molten material is controlled at 1550℃.

[0016] S3: Then the silicon-molybdenum rod on the top of the melting furnace is used for heating and insulation to avoid temperature loss inside the melting furnace. In addition, because the thermal insulation layer is made of zirconium-containing glass fiber wool, it can withstand high temperatures above 1600 degrees, further improving the thermal insulation function.

[0017] S4: Because the melting furnace is tilted as a whole, the tilt angle is 5 degrees, which is convenient for the flow of molten materials. After being heated, the melt flows into the interior of the crystallization furnace through the overflow pipe for cooling and crystallization. The raw material powder that is not completely melted is blocked by the carbon fiber plate to prevent it from flowing out through the overflow pipe. Compared with the prior art, the present invention has the following beneficial effects: 1. For the synthetic mica melting device, taking 15 tons of synthetic mica as an example, the traditional internal heat melting process takes 50-55 hours, while the dynamic melting process only takes 10-15 hours, with better heat transfer effect and higher heat conversion rate.

[0018] 2. The synthetic mica melting device has a dynamic melting process, good transmission and mass transfer effects, and a heating and heat preservation device is arranged inside the furnace body. The five raw materials can be completely melted, thereby reducing the output rate of the triangular sheets.

[0019] 3. The melting synthetic mica device has a small exhaust outlet, can realize continuous operation, can be connected to an external environmental protection treatment device, does not pollute the environment, is more energy-saving and environmentally friendly, and has a yield of 85%-90%. The furnace body can be recycled and does not generate solid waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative labor.

[0021] Figure 1 It is a front view structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the top view structure of the present invention; Figure 3 It is a schematic cross-sectional structural diagram of the feeding device of the present invention; Figure 4 It is a schematic cross-sectional structural diagram of the melting device of the present invention.

[0022] In the figure: 1, base; 2, melting furnace; 301, feeding pipe; 302, feeding hopper; 303, feeding pipe; 304, feeding motor; 305, rotating shaft; 306, feeding auger; 401, magnesium carbon refractory brick; 402, thermal insulation layer; 403, graphite liner; 404, graphite electrode; 405, silicon molybdenum rod; 406, carbon fiber plate; 407, overflow pipe. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] See also Figure 1-Figure 4 The present invention provides a technical solution: a device for melting synthetic mica, comprising a base 1 and a melting furnace 2, wherein the melting furnace 2 is arranged on the right side of the base 1, a feeding device is arranged on the base 1, and a melting device is arranged inside the melting furnace 2.

[0026] The feeding device comprises a loading unit and a conveying unit.

[0027] The loading unit includes a loading pipe 301, a loading hopper 302, and a feeding pipe 303. The loading pipe 301 is obliquely installed on the top of the base 1, the loading hopper 302 is fixedly connected to the top of the bottom of the outer surface of the loading pipe 301, and the feeding pipe 303 is fixedly connected to the bottom of the outer surface of the loading pipe 301, and its bottom extends into the interior of the melting furnace 2.

[0028] The feeding motor 304, the rotating shaft 305, and the feeding auger 306. The feeding motor 304 is installed on the top of the feeding tube 301, the top of the rotating shaft 305 is connected to the output end of the feeding motor 304, and its bottom extends into the inner bottom of the feeding tube 301. The feeding auger 306 is fixedly connected to the outer surface of the rotating shaft 305.

[0029] The melting device comprises a heat-insulating unit and a melting unit.

[0030] The thermal insulation unit includes magnesium carbon refractory bricks 401, a thermal insulation layer 402, and a graphite liner 403. The melting furnace 2 is paved with magnesium carbon refractory bricks 401, the thermal insulation layer 402 is laid inside the magnesium carbon refractory bricks 401, and the graphite liner 403 is installed inside the thermal insulation layer 402.

[0031] The heat insulation layer 402 is made of zirconium-containing glass fiber wool. A graphite electrode 404 is disposed at the bottom of the graphite inner liner 403 , and the graphite electrode 404 extends to the outside of the melting furnace 2 .

[0032] The melting unit includes silicon-molybdenum rods 405, carbon fiber plates 406, and overflow pipes 407. Multiple silicon-molybdenum rods 405 are respectively installed on the top of the melting furnace 2, and their bottoms extend into the interior of the melting furnace 2. The carbon fiber plate 406 is installed on the right side of the top of the melting furnace 2, and its bottom extends into the upper part of the bottom of the interior of the melting furnace 2. The overflow pipe 407 is fixedly connected to the upper middle part of the right outer surface of the melting furnace 2.

[0033] A method for melting synthetic mica comprises the following steps: S1: First, five kinds of raw materials, namely, quartz sand, alumina, fused magnesia, potassium fluorosilicate and potassium carbonate, are mixed in proportion and put into the interior of the upper hopper 302, and then the feeding motor 304 is started to drive the rotating shaft 305 to rotate, thereby driving the feeding auger 306 on the outer surface of the rotating shaft 305 to rotate, and the mixed material inside the feeding pipe 301 is transported from the bottom to the top, and discharged into the interior of the melting furnace 2 from the feeding pipe 303 at the top of the feeding pipe 301.

[0034] S2: The materials to be mixed enter the interior of the melting furnace 2, and then the busbar power after the transformer transformation is transformed into low voltage and high current to connect the graphite electrode 404 at the bottom of the melting furnace 2. The graphite electrode 404 generates heat, resulting in an arc reaction, so that the mixed materials are melted into liquid. Its rated power is 450-550KW, the heating temperature of the electrode center is 1450-1700℃, and the temperature of the molten material is controlled at 1550℃.

[0035] S3: Then the silicon-molybdenum rod 405 on the top of the melting furnace 2 is used for heating and insulation to avoid temperature loss inside the melting furnace 2. In addition, because the heat insulation layer 402 is made of zirconium-containing glass fiber wool, it can withstand high temperatures above 1600 degrees, further improving the heat insulation function.

[0036] S4: Because the melting furnace 2 is tilted as a whole with an angle of 5 degrees, it is convenient for the molten material to flow. After being heated, the melt flows into the interior of the crystallization furnace through the overflow pipe 407 for cooling and crystallization. The raw material powder that is not completely melted is blocked by the carbon fiber plate 406 to prevent it from flowing out through the overflow pipe 407.

[0037] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the statement "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0038] 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 synthetic mica melting device, comprising a base (1) and a melting furnace (2), wherein the melting furnace (2) is arranged on the right side of the base (1), and is characterized in that: A feeding device is arranged on the base (1), and a melting device is arranged inside the melting furnace (2); The feeding device comprises a loading unit and a conveying unit; The loading unit comprises a loading pipe (301), a loading hopper (302), and a feeding pipe (303); the loading pipe (301) is obliquely installed on the top of the base (1); the loading hopper (302) is fixedly connected to the top of the bottom of the outer surface of the loading pipe (301); the feeding pipe (303) is fixedly connected to the bottom of the outer surface of the loading pipe (301), and its bottom extends into the interior of the melting furnace (2).

2. The device for melting synthetic mica according to claim 1, characterized in that: The feeding motor (304), the rotating shaft (305), and the feeding auger (306), wherein the feeding motor (304) is installed on the top of the feeding tube (301), the top of the rotating shaft (305) is connected to the output end of the feeding motor (304), and the bottom thereof extends into the inner bottom of the feeding tube (301), and the feeding auger (306) is fixedly connected to the outer surface of the rotating shaft (305).

3. The device for melting synthetic mica according to claim 1, characterized in that: The melting device comprises a heat preservation and insulation unit and a melting unit; The thermal insulation unit comprises a magnesia-carbon refractory brick (401), a thermal insulation layer (402), and a graphite liner (403); the melting furnace (2) is paved with the magnesia-carbon refractory brick (401); the thermal insulation layer (402) is paved inside the magnesia-carbon refractory brick (401); and the graphite liner (403) is installed inside the thermal insulation layer (402).

4. The device for melting synthetic mica according to claim 3, characterized in that: The heat insulation layer (402) is made of zirconium-containing glass fiber wool, and a graphite electrode (404) is arranged at the bottom of the graphite liner (403), and the graphite electrode (404) extends to the outside of the melting furnace (2).

5. The device for melting synthetic mica according to claim 3, characterized in that: The melting unit comprises silicon-molybdenum rods (405), a carbon fiber plate (406), and an overflow pipe (407). The plurality of silicon-molybdenum rods (405) are respectively installed on the top of the melting furnace (2), and their bottoms extend into the interior of the melting furnace (2). The carbon fiber plate (406) is installed on the right side of the top of the melting furnace (2), and its bottom extends into the upper part of the bottom of the interior of the melting furnace (2). The overflow pipe (407) is fixedly connected to the upper middle part of the right outer surface of the melting furnace (2).

6. A method for melting synthetic mica according to any one of claims 1 to 5, characterized in that: The following steps are involved: S1: First, five kinds of raw materials, namely, quartz sand, alumina, fused magnesia, potassium fluorosilicate and potassium carbonate, are mixed in proportion and placed into the interior of the upper hopper (302), and then the feeding motor (304) is started to drive the rotating shaft (305) to rotate, thereby driving the feeding auger (306) on the outer surface of the rotating shaft (305) to rotate, so as to transport the mixed material inside the feeding pipe (301) from the bottom to the top, and discharge it into the interior of the melting furnace (2) from the feeding pipe (303) at the top of the feeding pipe (301); S2: the material to be mixed enters the interior of the melting furnace (2), and then the busbar (with low voltage and high current) after being transformed by the transformer is connected to the graphite electrode (404) at the bottom of the melting furnace (2), and the graphite electrode (404) generates heat, resulting in an arc reaction, so that the mixed material is melted into a liquid state. The rated power is 450-550KW, the heating temperature of the electrode center is 1450-1700°C, and the temperature of the molten material is controlled at 1550°C; S3: Then, the silicon-molybdenum rod (405) on the top of the melting furnace (2) is used for heating and heat preservation to prevent the temperature loss inside the melting furnace (2). Moreover, because the heat insulation layer (402) is made of zirconium-containing glass fiber wool, it can withstand high temperatures above 1600 degrees, thereby further improving the heat preservation and heat insulation function; S4: Because the melting furnace (2) is tilted as a whole, the tilt angle is 5 degrees, so as to facilitate the flow of molten materials. After being heated, the melt flows into the interior of the crystallization furnace through the overflow pipe (407) for cooling and crystallization. The raw material powder that is not completely melted is blocked by the carbon fiber plate (406) to prevent it from flowing out through the overflow pipe (407).

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