An inorganic pigment calcination device based on a filler system

Abstract

The present invention relates to the technical field of calcining equipment, and discloses an inorganic pigment calcining equipment based on a filler system, including a rotary kiln, a cylinder for calcining inorganic pigments is arranged inside the rotary kiln, a feed port for fillers is arranged at one end of the cylinder, a discharge port for outputting inorganic pigments is arranged at the other end of the cylinder, a screw feeder penetrating into the inner wall of the cylinder is arranged at one end of the cylinder near the feed port, the screw feeder is connected to the cylinder in a transmission connection, and the position of the cylinder near the feed port can be cleaned while the cylinder rotates to calcine the inorganic pigment. The invention is provided with a feeding piece at the feed port to ensure that the filler and the pigment are mixed evenly and are transmitted into the cylinder at the same time, and the material entering the cylinder is always kept in a uniform mixing state under the conveyance of the screw feeder, ensuring that the mixed material is evenly conveyed into the cylinder while avoiding the agglomeration of the material and blocking the feed port position, thereby ensuring smooth conveying.

Description

Technical Field

[0001] The present invention relates to the technical field of calcination equipment, and particularly relates to an inorganic pigment calcination equipment based on a filler system. Background Art

[0002] Calcination can improve the crystal structure of pigments, effectively remove organic substances, carbonates, moisture, metal impurities, etc. in raw materials, improve the purity of pigments, make their colors more pure, enhance the stability of pigments, and can also change the physical properties of pigments, such as changing colors due to crystal form and impurity changes, regulating particle size through particle aggregation or shrinkage, to meet the specific requirements of different application fields such as plastic coloring for color and particle size, thereby comprehensively improving the quality and applicability of inorganic pigments. At the same time, in order to achieve all-round improvement of pigment performance, inorganic pigments and fillers are cleverly combined during the calcination process, so that inorganic pigments have been greatly expanded and enhanced in terms of quality and application efficiency.

[0003] The cylindrical design of the calcination equipment enables the material to move in a circular motion along the cylinder wall during the rotation of the furnace bed. At the same time, due to a certain inclination angle of the furnace bed, the material will slowly move from the higher end to the lower end, thus realizing a continuous calcination process. However, when the material just entering the furnace bed has not had time to be evenly distributed under the action of the rotation of the furnace bed, it starts to move towards the bottom end due to the influence of the inclination angle. This will increase the thickness of the material near the feed port, while the material in other areas is relatively less, and after the pigment and filler are mixed, they form agglomerates with a certain viscosity. The material shows slight sintering due to the increase in temperature at the initial stage of calcination, which will cause the material to agglomerate on the furnace bed and cannot move normally along the inclined furnace bed, resulting in local material accumulation at the feed port, and further causing uneven heating and incomplete reaction. The accumulation and excessive thickness of the material at the feed port will cause this part of the material not to be calcined synchronously with the material in other parts. Because the thermal conductivity of the accumulated material will be affected, heat cannot be evenly transferred to the inside of the material, making this part of the material calcined incompletely, resulting in problems such as inconsistent crystal form transformation and incomplete removal of impurities. Summary of the Invention

[0004] Technical Problems to be Solved

[0005] Aiming at the above-mentioned disadvantages of the prior art, the present invention provides an inorganic pigment calcination equipment based on a filler system, which can effectively solve the problem of easy material accumulation at the feed port of the prior art.

[0006] To achieve the above objectives, the present invention is realized through the following technical solutions:

[0007] The present invention provides an inorganic pigment calcination equipment based on a filler system, comprising:

[0008] Rotary kiln, wherein a cylinder for calcining inorganic pigments is provided inside the rotary kiln, a feed inlet for filling materials is provided at one end of the cylinder, and a discharge opening for discharging inorganic pigments is provided at the other end of the cylinder;

[0009] A screw feeder extending into the inner wall of the cylinder is provided at one end of the cylinder close to the feed inlet. The screw feeder is in transmission connection with the cylinder and can clean the space near the feed inlet of the cylinder while the cylinder rotates for calcining inorganic pigments. A crushing member for reciprocally crushing agglomerated substances in the cylinder is provided at one end of the screw feeder close to the cylinder;

[0010] Wherein, a stirring member for preventing material stratification during the calcination process and improving the cooling efficiency of the material after calcination is provided at the other end of the crushing member;

[0011] The crushing member includes a fixed shaft fixedly connected to the middle of the screw feeder. An activity groove is provided on the outer surface of the fixed shaft. A slider is slidably connected to the inner wall of the activity groove. The slider is embedded in the inner wall of a limit groove. The limit groove is provided on the lower surface of a sleeve. The sleeve is sleeved on the outer wall of the fixed shaft. A grinding block is fixedly connected to one end of the sleeve close to the cylinder;

[0012] Wherein, the cylinder includes a preheating zone, a calcination zone and a cooling zone. The preheating zone, the calcination zone and the cooling zone are arranged in sequence from left to right. A channel one is provided on the inner wall of the preheating zone. The other end of the preheating zone is fixedly connected to the calcination zone. A channel two is provided on the inner wall of the calcination zone. A channel three is provided on the inner wall of the cooling zone;

[0013] The pitch of the channel one on the inner wall of the preheating zone is greater than the pitches of the channel two on the inner wall of the calcination zone and the channel three on the inner wall of the cooling zone. The groove depths of the channel one on the inner wall of the preheating zone and the channel two on the inner wall of the calcination zone are equal. The pitches of the channel two on the inner wall of the calcination zone and the channel three on the inner wall of the cooling zone are equal. The groove depth of the channel two on the inner wall of the calcination zone is less than the groove depth of the channel three on the inner wall of the cooling zone.

[0014] Furthermore, a transmission shaft is fixedly connected to the outside of the cylinder. A linkage member is provided on the outer surface of the transmission shaft. The linkage member includes a gear one meshed and connected to the lower surface of the transmission shaft. The other end of the gear one is fixedly connected to a positioning shaft. A limit block is sleeved on the outside of the positioning shaft. The other end of the positioning shaft is fixedly connected to a gear two. A gear three is meshed and connected to the upper surface of the gear two. The gear three is located in the middle of the outer surface of the feed inlet.

[0015] Furthermore, the lower surface of the grinding block is set as a fan shape with a slanted side, and there is a gap between the bottom end of the grinding block and the inner wall of the cylinder in the vertical direction.

[0016] Further, the stirring member includes a main shaft fixedly connected to one end of the fixed shaft. The surface of the main shaft is evenly provided with positioning areas, and a positioning cylinder is sleeved on the outer surface of the positioning areas. The inner wall of the positioning cylinder is provided with a threaded groove slidably connected to the outer surface of the positioning areas. Symmetrically fixed on the outer surface of the positioning cylinder are stirring rods for stirring the mixed materials in the cylinder.

[0017] Further, the fixed shaft is located in the internal space of the preheating zone.

[0018] The technical solution provided by the present invention has the following beneficial effects compared with the prior art:

[0019] The present invention is provided with a feeding member at the feeding port, which ensures that the filler and the pigment are evenly mixed and then transported into the cylinder. The materials entering the interior of the cylinder are always kept in a uniform mixing state under the transportation of the spiral feeder, ensuring that the mixed materials are evenly transported into the cylinder while avoiding the agglomeration of materials and blockage at the feeding port position, thus ensuring smooth transportation.

[0020] The present invention sets three calcination spaces in the cylinder, which are the preheating zone, the calcination zone, and the cooling zone from left to right. The pitch of the preheating zone is greater than that of the calcination zone and the cooling zone. The spiral groove depths of the preheating zone and the calcination zone are equal. The pitches of the calcination zone and the cooling zone are equal, but the spiral groove depth of the calcination zone is less than that of the cooling zone. When transporting materials, the materials are pushed by the blades of the spiral feeder and move along channel one to channel two at a relatively stable speed. When the materials just enter the preheating zone, due to the relatively small spiral groove depth of channel one, the pushing force received is relatively gentle, which is convenient for the materials to smoothly enter the transportation state. As the materials move along channel one towards channel two, the pitch gradually decreases, and the pushing distance of the spiral blades on the materials becomes larger under a unit rotation angle, making the moving speed of the materials gradually increase, which is more conducive to the materials quickly entering the calcination state. For some materials with slightly higher viscosity, which are prone to adhering to the spiral groove wall or have poor fluidity themselves, the relatively shallow depths of channel one and channel two contribute to the initial entry and preliminary pushing of the materials, avoiding the accumulation of materials caused by excessive depth at the beginning. At the same time, the materials at channel two will not be too thick, which helps the uniform calcination of the materials, avoiding the problems such as blocked heat transfer, poor gas exchange, and uneven mixing of materials due to excessive accumulation of materials in a unit space, and further causing quality problems such as uneven product temperature, incomplete reaction, abnormal particle size distribution, and finally color deviation and unstable performance of the product. As the materials move forward, the gradually deepening spiral groove can accommodate more materials, enabling more calcined materials to be stored in a unit space, improving the space utilization rate. At the same time, with the help of the self-gravity of the materials and the continuous pushing action of the spiral blades, the materials are more likely to flow towards the discharge port.

[0021] In the present invention, a crushing member is provided in the preheating zone. The spiral feeder is connected to the transmission shaft that drives the cylinder to rotate through a linkage member. While the cylinder rotates, Gear III drives the spiral feeder to rotate and convey the material into the preheating zone. At the same time, the fixed shaft at the preheating zone rotates, driving the grinding block to swing back and forth at the preheating zone position, capable of crushing the material accumulated in the preheating zone.

[0022] In the present invention, a stirring member is provided in the calcination zone. The stirring rod of the stirring member rotates along with the fixed shaft. At the same time, due to the connection between the positioning zone and the threaded groove, the stirring rod rotates while reciprocating between the positioning zones, capable of effectively stirring the material in the calcination zone and preventing the material from stratifying. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0024] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0025] Figure 2 It is a schematic diagram of the structure of the linkage member of an embodiment of the present invention;

[0026] Figure 3 It is a schematic diagram of the split structure of the cylinder of an embodiment of the present invention;

[0027] Figure 4 It is a schematic diagram of the connection between the stirring member and the crushing member of an embodiment of the present invention;

[0028] Figure 5 It is a schematic diagram of the split structure of the crushing member of an embodiment of the present invention;

[0029] Figure 6 It is a schematic diagram of the split structure of the stirring member of an embodiment of the present invention.

[0030] The reference numerals in the figure respectively represent: 1, rotary kiln; 2, cylinder body; 21, preheating zone; 211, channel one; 22, calcination zone; 221, channel two; 23, cooling zone; 231, channel three; 3, feed inlet; 4, discharge opening; 5, transmission shaft; 6, linkage; 61, gear one; 62, limit block; 63, positioning shaft; 64, gear two; 71, gear three; 72, screw feeder; 8, crushing member; 81, fixed shaft; 82, movable groove; 83, slider; 84, sleeve; 85, limit groove; 86, crushing block; 9, stirring member; 91, main shaft; 92, positioning zone; 93, positioning cylinder; 94, stirring rod; 95, thread groove. Detailed implementation manners

[0031] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some but not all of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0032] The present invention will be further described below with reference to the embodiments.

[0033] Embodiment:

[0034] Please refer to Figures 1 - 6 , the present invention provides a technical solution: a high-end inorganic pigment calcination device based on a filler system, including a rotary kiln 1, as Figure 1 and Figure 2 shown, a cylinder body 2 for calcining inorganic pigments is arranged inside the rotary kiln 1, a feed inlet 3 for filling materials is arranged at one end of the cylinder body 2, a discharge opening 4 for outputting inorganic pigments is arranged at the other end of the cylinder body 2, a screw feeder 72 extending into the inner wall of the cylinder body 2 is arranged near the feed inlet 3 of the cylinder body 2, the screw feeder 72 is in transmission connection with the cylinder body 2, and can clean the position near the feed inlet 3 of the cylinder body 2 while the cylinder body 2 rotates for inorganic pigment calcination. A transmission shaft 5 is fixedly connected to the outside of the cylinder body 2, a linkage 6 is arranged on the outer surface of the transmission shaft 5, the linkage 6 includes a gear one 61 meshed with the lower surface of the transmission shaft 5, the other end of the gear one 61 is fixedly connected with a positioning shaft 63, a limit block 62 is sleeved outside the positioning shaft 63, the other end of the positioning shaft 63 is fixedly connected with a gear two 64, and a gear three 71 meshed with the upper surface of the gear two 64 is arranged in the middle of the outer surface of the feed inlet 3.

[0035] In the early stage of calcination, the raw materials have just entered the calcination equipment. At this time, the pigment is a mixed material containing different components of pigments and fillers. If a simple top-feed method is used, when materials with different densities or particle sizes enter the calcination furnace under the action of gravity, stratification may begin. In addition, if partial agglomeration or stratification has occurred during the storage or transportation of the raw materials and no effective pretreatment is carried out before feeding, this state will continue into the early stage of calcination. Therefore, in the present invention, a feeding member is provided at the feeding port 3 to ensure uniform mixing of the filler and the pigment while transporting them into the cylinder 2. The materials entering the interior of the cylinder 2 are always kept in a uniform mixing state under the transportation of the screw feeder 72, ensuring the uniform transportation of the mixed materials into the cylinder 2 while preventing the materials from agglomerating and blocking at the feeding port 3 position, thus ensuring smooth transportation.

[0036] Reference Figure 3 , the interior of the cylinder 2 is provided with three calcination spaces, which are, from left to right, a preheating zone 21, a calcination zone 22, and a cooling zone 23. The pitch of the preheating zone 21 is greater than that of the calcination zone 22 and the cooling zone 23. The depths of the screw grooves in the preheating zone 21 and the calcination zone 22 are equal. The pitches of the calcination zone 22 and the cooling zone 23 are equal, but the depth of the screw groove in the calcination zone 22 is less than that of the cooling zone 23. When transporting the materials, the materials are pushed by the blades of the screw feeder 72 and move along the channel 211 towards the calcination zone 22 at a relatively stable speed. When the materials just enter the channel 211 of the preheating zone 21, due to the relatively small depth of the screw groove, the pushing force received is relatively gentle, facilitating the smooth entry of the materials into the transportation state. As the materials move forward along the channel 211 to the channel 221, the pitch gradually decreases, and the pushing distance of the blades of the screw feeder 72 on the materials becomes larger under a unit rotation angle, causing the moving speed of the materials to gradually increase, which can effectively prevent the materials from accumulating at one end of the cylinder 2 near the feeding port 3. For some materials with slightly higher viscosity, which are prone to adhering to the screw groove wall or have poor fluidity themselves, the relatively shallow depth of the screw groove at the feeding port 3 helps the initial entry and preliminary pushing of the materials, avoiding material accumulation caused by excessive depth at the beginning. At the same time, the materials at the channel 221 will not be too thick, which helps the uniform calcination of the materials, avoiding problems such as blocked heat transfer, poor gas exchange, and uneven material mixing due to excessive accumulation of materials in a unit space, and further causing quality problems such as uneven product temperature, incomplete reaction, abnormal particle size distribution, and finally color deviation and unstable performance of the product. As the materials move forward to the channel 231, the gradually deepening screw groove can accommodate more materials, enabling more calcined materials to be stored in a unit space, improving the space utilization rate. At the same time, with the help of the self-gravity of the materials and the continuous pushing action of the spiral blades, the materials are more likely to flow towards the discharge port.

[0037] Meanwhile, during the calcination process, the materials on the side closer to the heating source heat up faster. The physical properties of this part of the materials, such as viscosity and fluidity, may change first, resulting in stratification with other materials that have not yet heated up. The calcination temperature and heating rate are important influencing factors. Due to the too-fast heating rate, the internal changes of the materials cannot be evenly adjusted in time, which will cause the changes of some components to be ahead of other components. Some low-melting components in the pigment may quickly melt and aggregate, while other components are still in a solid state, causing blockage at the position of the cylinder 2 close to the feed inlet 3. Therefore, in this application, a crushing member 8 is provided at one end of the screw feeder 72. The screw feeder 72 is connected to the transmission shaft 5 that drives the cylinder 2 to rotate through a linkage member 6. While the cylinder 2 rotates, the gear three 71 drives the screw feeder 72 to rotate and convey the materials into the preheating zone 21. At the same time, the fixed shaft 81 at the preheating zone 21 rotates, driving the grinding block 86 to swing back and forth at the position of the preheating zone 21, which can crush the materials aggregated in the preheating zone 21.

[0038] Reference Figure 4 and Figure 5 , a crushing member 8 for crushing the caked substances in the cylinder 2 is provided at one end of the screw feeder 72 close to the cylinder 2. The crushing member 8 includes a fixed shaft 81 fixedly connected to the middle of the screw feeder 72. An activity groove 82 is formed on the outer surface of the fixed shaft 81. A slider 83 is slidably connected to the inner wall of the activity groove 82. The slider 83 is embedded in the inner wall of the limiting groove 85. The limiting groove 85 is provided on the lower surface of the sleeve 84. The sleeve 84 is sleeved on the outer wall of the fixed shaft 81. One end of the sleeve 84 close to the cylinder 2 is fixedly connected to a grinding block 86. The lower surface of the grinding block 86 is set as a fan shape with a slanted side, and there is a gap between the bottom end of the grinding block 86 and the inner wall of the cylinder 2 in the vertical direction.

[0039] The rotation of the screw feeder 72 drives the fixed shaft 81 to rotate. The fixed shaft 81 and the sleeve 84 rotate under the restriction of the slider 83. The slider 83 slides on the inner wall of the limiting groove 85. When the slider 83 slides to one end of the inner wall of the limiting groove 85, the slider 83 exerts a force on the sleeve 84, and the sleeve 84 drives the grinding block 86 to swing reciprocally. The grinding block 86 swings in the inner wall of the channel one 211, which can crush the materials aggregated in the preheating zone 21 without disturbing the passage of the non-aggregated materials.

[0040] During the middle stage of calcination, stratification occurs. As the calcination process progresses, the temperature gradually rises, and the physical and chemical changes of the materials intensify. Since the inorganic pigment and the filler are mixed into a composite material, when some pigment components undergo polymorphic transformation, their density or volume may change, resulting in stratification with other non-transformed components. At the same time, at high temperatures, some of the organic substances on the surface of the pigment may melt or decompose, increasing the viscosity between the materials. At this time, the mixing of the materials only relies on the rotation of the calcination equipment itself, and the power to turn the materials is insufficient. The more viscous parts will aggregate together to form stratification.

[0041] The rotation of the fixed shaft 81 drives the rotation of the main shaft 91. The main shaft 91 drives the rotation of the positioning area 92. The outer surface of the positioning area 92 is slidably connected to the threaded groove 95 of the positioning cylinder 93. As the main shaft 91 rotates, it can drive the positioning cylinder 93 to reciprocate and rotate along the positioning area 92. The positioning cylinder 93 drives the stirring rod 94 to rotate, thereby stirring and turning the materials in the calcination area 22 to prevent the materials from aggregating and stratifying.

[0042] In a continuous calcination furnace, when the residence time of the materials in a certain area of the furnace exceeds the normal range, the materials in this area may stratify with the materials in other areas due to continuous reactions. Therefore, the stirring rod 94 in the present invention can reciprocate under the restriction of the positioning area 92 to dynamically stir the materials in this area, improve the stirring effect, and reduce the probability of material stratification.

[0043] In the later stage of calcination, the pigment has basically completed the main physical and chemical changes and begins to enter the cooling process. During the cooling process, natural cooling and forced air cooling are usually adopted, and the temperature distribution and shrinkage of the pigment will be different. Forced air cooling may cause the surface temperature of the pigment to drop rapidly while the internal temperature drops slowly. This temperature gradient will cause the pigment to stratify. If the cooling speed is uneven, the shrinkage degree of the pigment will be different, resulting in stratification. Especially for some pigments containing multiple components, the thermal expansion coefficients and shrinkage rates of different components are different, and stress differences will be generated during the cooling process, causing the pigment to stratify. The cooling method and speed have a significant impact on later stratification.

[0044] Therefore, in addition to playing the role of dispersing material stratification like a part of the stirring member 9 in the calcination area 22, a part of the structure of the stirring member 9 located in the cooling area 23 can also stir the inorganic pigment. During the stirring process, the materials are continuously turned over, and the materials originally aggregated together are dispersed. When the stirring member 9 rotates, it will drive the pigment to circulate and turn over. The hotter part and the colder part of the materials in the materials are constantly mixed and exchange positions. In the area near the cooling wall surface, the materials are quickly taken away after the temperature drops, and at the same time, the hotter materials are brought to the vicinity of the cooling wall surface again. This cycle is repeated to improve the cooling efficiency.

[0045] The above embodiments are only used to illustrate the technical solutions of the present invention, not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements for some of the technical features; and these modifications or replacements will not make the essence of the corresponding technical solutions deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. An inorganic pigment calcination device based on a filler system, characterized in that, Comprising: A rotary kiln (1), inside which there is a cylinder body (2) for calcining inorganic pigments. One end of the cylinder body (2) is provided with a feed inlet (3) for filling materials, and the other end of the cylinder body (2) is provided with a discharge outlet (4) for discharging inorganic pigments; One end of the cylinder body (2) near the feed inlet (3) is provided with a screw feeder (72) extending into the inner wall of the cylinder body (2). The screw feeder (72) is in transmission connection with the cylinder body (2), and can clean the space of the cylinder body (2) near the feed inlet (3) while the cylinder body (2) rotates for calcining inorganic pigments. One end of the screw feeder (72) near the cylinder body (2) is provided with a crushing member (8) for reciprocally crushing the caked substances in the cylinder body (2); Wherein, the other end of the crushing member (8) is provided with a stirring member (9) for preventing material stratification during the calcination process and improving the cooling efficiency of the material after calcination; The crushing member (8) includes a fixed shaft (81) fixedly connected to the middle of the screw feeder (72). An activity groove (82) is formed on the outer surface of the fixed shaft (81). A slider (83) is slidably connected to the inner wall of the activity groove (82). The slider (83) is embedded in the inner wall of a limit groove (85). The limit groove (85) is arranged on the lower surface of a sleeve (84). The sleeve (84) is sleeved on the outer wall of the fixed shaft (81). One end of the sleeve (84) near the cylinder body (2) is fixedly connected to a grinding block (86); Wherein, the cylinder body (2) includes a preheating zone (21), a calcination zone (22) and a cooling zone (23). The preheating zone (21), the calcination zone (22) and the cooling zone (23) are arranged in sequence from left to right. A channel one (211) is arranged on the inner wall of the preheating zone (21). The other end of the preheating zone (21) is fixedly connected to the calcination zone (22). A channel two (221) is formed on the inner wall of the calcination zone (22). A channel three (231) is formed on the inner wall of the cooling zone (23); The pitch of the channel one (211) on the inner wall of the preheating zone (21) is greater than the pitches of the channel two (221) on the inner wall of the calcination zone (22) and the channel three (231) on the inner wall of the cooling zone (23). The groove depths of the channel one (211) on the inner wall of the preheating zone (21) and the channel two (221) on the inner wall of the calcination zone (22) are equal. The pitches of the channel two (221) on the inner wall of the calcination zone (22) and the channel three (231) on the inner wall of the cooling zone (23) are equal. The groove depth of the channel two (221) on the inner wall of the calcination zone (22) is less than the groove depth of the channel three (231) on the inner wall of the cooling zone (23).

2. The inorganic pigment calcination device based on a filler system according to claim 1, characterized in that: A transmission shaft (5) is fixedly connected to the outer side of the cylinder body (2). A linkage member (6) is arranged on the outer surface of the transmission shaft (5). The linkage member (6) includes a first gear (61) meshed and connected to the lower surface of the transmission shaft (5). The other end of the first gear (61) is fixedly connected to a positioning shaft (63). A limiting block (62) is sleeved outside the positioning shaft (63). The other end of the positioning shaft (63) is fixedly connected to a second gear (64). A third gear (71) is meshed and connected to the upper surface of the second gear (64). The third gear (71) is located in the middle of the outer surface of the feed inlet (3).

3. An inorganic pigment calcination device based on a filler system according to claim 1, characterized in that: The lower surface of the grinding block (86) is set as a fan shape with a slanted side, and there is a gap between the bottom end of the grinding block (86) and the inner wall of the cylinder body (2) in the vertical direction.

4. An inorganic pigment calcination device based on a filler system according to claim 1, characterized in that: The stirring member (9) includes a main shaft (91) fixedly connected to one end of a fixed shaft (81). Positioning areas (92) are evenly arranged on the surface of the main shaft (91). A positioning cylinder (93) is sleeved outside the positioning areas (92). Thread grooves (95) which are slidably connected to the outer surfaces of the positioning areas (92) are arranged on the inner wall of the positioning cylinder (93). Stirring rods (94) for stirring the mixed materials in the cylinder body (2) are symmetrically fixed to the outer surface of the positioning cylinder (93).

5. An inorganic pigment calcination device based on a filler system according to claim 1, characterized in that: The fixed shaft (81) is located in the internal space of the preheating area (21).

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