阅读说明：本技术 一种锂盐回转窑用不定形耐火材料 (Amorphous refractory material for lithium salt rotary kiln ) 是由 傅修文 王秀 李畅 马朋朋 鲍石鹏 于 2020-07-18 设计创作，主要内容包括：一种锂盐回转窑用不定形耐火材料,属于耐火材料生产设备技术领域。其特征在于以优质高铝矾土、刚玉为主,添加一定数量的结合剂和分散剂,在生产制造工艺中再加入保温性能优异的硅酸铝纤维板,制作成节能效果良好的浇注料预制件。本发明同传统的烧成制品相比,流程简单,减少了砖坯压制,高温烧成等生产工序,在生产制造过程中可节省大量能耗和人力、物力。在施工过程过程,可在窑体焊接锚固件,增强耐火材料的整体性,避免定型制品的抽签掉砖。对于定型制品不好施工的部位,可用不定型耐火材料支胎浇注施工。(An unshaped refractory material for a lithium salt rotary kiln belongs to the technical field of refractory material production equipment. The casting material prefabricated member is characterized in that high-quality high-alumina and corundum are used as main materials, a certain amount of binding agent and dispersing agent are added, and an aluminum silicate fiber board with excellent heat insulation performance is added in a production and manufacturing process to manufacture the casting material prefabricated member with good energy-saving effect. Compared with the traditional sintered product, the invention has simple process, reduces the production procedures of green brick pressing, high-temperature sintering and the like, and can save a large amount of energy consumption, manpower and material resources in the production and manufacturing process. In the construction process, an anchoring piece can be welded on the kiln body, the integrity of the refractory material is enhanced, and the shaped product is prevented from being drawn and falling off. For the parts of the shaped product which are not easy to construct, the unshaped refractory material can be used for supporting the tire for pouring construction.)

1. The unshaped refractory material for the lithium salt rotary kiln is characterized by comprising a refractory prefabricated member and an anchoring member, wherein the refractory prefabricated member is fixedly arranged on a rotary kiln body through the anchoring member; the refractory prefabricated part comprises a refractory prefabricated part body and an aluminum silicate fiber board, wherein the aluminum silicate fiber board is covered in the refractory prefabricated part body;

the refractory prefabricated part body comprises the following components in percentage by mass:

15-25 parts of bauxite particles with the particle size of 10-5;

10-20 parts of bauxite particles with the particle size of 5-3;

10-20 parts of mullite particles with the particle size of 3-1;

10-20 parts of mullite particles with the particle size of 1-0;

5-10 parts of corundum particles with the particle size of 1-0;

5-10 parts of corundum with the fineness of 200 meshes;

5-10 parts of composite micro powder;

2-6 parts of a compound water reducing agent;

2-6 parts of a binding agent;

the components of the fire-resistant prefabricated part body are crushed to preset grain sizes through different material mills, then the materials are uniformly mixed and are extruded together with the aluminum silicate fiber board through a sandwich extruder to form fire-resistant prefabricated part billets, and the fire-resistant prefabricated part billets are cut into blocks through a cutting device and are dried to obtain the fire-resistant prefabricated part.

2. The unshaped refractory for a lithium salt rotary kiln as claimed in claim 1, wherein: the composite micro powder comprises the following components in parts by weight:

α- Al₂O₃3-10 parts of micro powder;

1-8 parts of silicon micropowder;

5-15 parts of tripolyphosphate or hexametaphosphate.

3. The unshaped refractory for a lithium salt rotary kiln as claimed in claim 2, wherein: the binder is tripolyphosphate or hexametaphosphate;

the compound water reducing agent comprises a polycarboxylic acid water reducing agent and a naphthalene water reducing agent, wherein the mass ratio of the polycarboxylic acid water reducing agent to the naphthalene water reducing agent is 1: 1.

4. the unshaped refractory for a lithium salt rotary kiln as claimed in claim 3, wherein: the material grinding machine comprises a grinding outer machine shell, wherein the grinding outer machine shell comprises a feeding shell, a grinding shell and a discharging shell, the feeding shell, the grinding shell and the discharging shell are sequentially connected together from top to bottom, a main cavity body and an auxiliary cavity body are arranged in the feeding shell, a crankshaft is transversely arranged in the main cavity body, a front end shaft of the crankshaft is installed on the side wall of the main cavity body through a bearing seat, a rear end shaft of the crankshaft is connected with a crankshaft driving motor, and the crankshaft driving motor is fixed on the side wall of the other side of the main cavity body; the crankshaft comprises at least three connecting rod journals; the auxiliary cavity is communicated with the feeding shell; the feeding shell is in a funnel shape with a large upper part and a small lower part;

more than three material grinding sub-cavities are longitudinally arranged in the material grinding shell; the upper end of each material grinding subchamber is provided with an annular inner convex ring, a plurality of outer wall grinding bar edges are longitudinally arranged on the inner convex ring, a grinding connecting rod is arranged in each material grinding subchamber, the upper end of the grinding connecting rod is hinged on a connecting rod shaft neck, the lower end of the grinding connecting rod is connected with a grinding ball, the grinding ball is positioned at the lower end of the inner concave ring, and a plurality of ball grinding bar edges are arranged on the outer peripheral wall of the grinding ball; the gap between the grinding ball and the side wall of the material grinding sub-cavity is smaller than the particle size of the final required particles of the material;

when the crankshaft driving motor drives the crankshaft to rotate, each grinding connecting rod can be driven to vertically move up and down, and then each grinding ball is driven to vertically move, so that the ball grinding strip edges and the outer wall grinding strip edges are matched to grind and crush materials falling from the upper side.

5. The unshaped refractory for a lithium salt rotary kiln as claimed in claim 4, wherein: the grinding ball rotating driving device is arranged below the grinding balls in the grinding material sub-cavity; the grinding connecting rod comprises an upper connecting rod body and a lower connecting rod body, the upper connecting rod body and the lower connecting rod body are coaxially and rotatably connected, and the lower end of the lower connecting rod body is fixedly connected with the grinding ball into a whole; a strip-shaped screw hole is formed upwards from the lower part of the grinding ball and extends upwards into the lower connecting rod body; the grinding ball rotation driving device comprises a fixed sieve tray, the fixed sieve tray is horizontally fixed below the material grinding sub-cavity, and sieve holes are formed in the fixed sieve tray; vertically fixing a rotary driving screw shaft at the central part above the fixed sieve tray, and inserting the upper end of the rotary driving screw shaft into the strip-shaped screw hole; when the grinding connecting rod moves up and down, the lower connecting rod body and the grinding balls can rotate along the rotary driving lead screw to move up and down, and then the grinding strip edges of the ball bodies rotate to grind materials.

6. The unshaped refractory for a lithium salt rotary kiln as claimed in claim 5, wherein: the grinding ball rotation driving device further comprises a sealing dust-blocking structure, the sealing dust-blocking structure comprises a silica gel dust-blocking ring and a silica gel telescopic dust-blocking pipe, the silica gel dust-blocking ring is in a horn mouth shape with a small upper part and a large lower part, the upper end of the silica gel dust-blocking ring is coaxially fixed on the lower part of the grinding ball, and the lower end of the silica gel dust-blocking ring is provided with an inwards concave annular outer blocking edge; the flexible dirt guard pipe of silica gel pipe suit is on the rotation drive lead screw, and the lower extreme of the flexible dirt guard pipe of silica gel connects fixed sieve dish, keeps off along in the upper end setting of the flexible dirt guard pipe of silica gel turns up the annular, keep off along with the annular in the annular outside keep off along the lock fixed together, when grinding ball rotatory removal from top to bottom, keep off along and the annular outside keeps off along can not unhook in the annular.

7. The unshaped refractory for a lithium salt rotary kiln as claimed in claim 6, wherein: the feeding shell comprises a funnel cavity and a straight pipe cavity which are coaxially arranged from top to bottom;

a flexible material shaking device is arranged in a straight pipe cavity of a feeding shell, and comprises a material shaking driving motor, a transmission rotating shaft, a material shaking motor mounting bracket, a plurality of flexible wear-resistant rubber material guide pipes and a plurality of vibrating rings; a plurality of material guide cylinders are arranged in the feeding shell, and each material guide cylinder is vertically connected with each material grinding sub-cavity below the material guide cylinder in a penetrating way; the rubber material guide pipe is arranged in the material guide cylinder, and the vibration ring is sleeved outside the rubber material guide pipe; the adjacent vibrating rings are connected through a vibrating connecting rod, and a vibrating spring is sleeved on the vibrating connecting rod between the adjacent material guide cylinders; the material shaking driving motor and the transmission rotating shaft are both arranged on the outer wall of the feeding shell through a material shaking motor mounting frame, a driving gear is arranged at the upper end of a motor shaft of the material shaking driving motor, a driven gear is arranged at the upper end of the transmission rotating shaft, and the driving gear and the driven gear are meshed with each other; the lower end of the transmission rotating shaft is connected with one end of a fixed folding rod, the other end of the folding rod is connected with a driving connecting rod, and the driving connecting rod is connected with an adjacent vibration ring;

a funnel-shaped rotating lining is arranged in the funnel cavity, and a plurality of material guide strips are arranged on the inner wall of the rotating lining along the direction of a bus; the lower end of the rotating lining is arranged in the funnel cavity through a dustproof bearing, and a lining driving outer gear ring is arranged on the periphery of the upper end of the rotating lining; a meshing through hole is formed in the side wall of the funnel cavity, and the driving gear is embedded into the meshing through hole and meshed with the lining driving outer gear ring; when the material shaking driving motor drives the driving gear to rotate, the rotating lining can be synchronously driven to rotate in the funnel cavity.

8. The unshaped refractory for a lithium salt rotary kiln as claimed in claim 7, wherein: the rotary mixing device comprises a large-upper funnel-shaped mixing barrel and a small-lower funnel-shaped mixing barrel, an upper end cover and a lower end cover are respectively arranged at the upper end and the lower end of the mixing barrel, a mixing shaft is coaxially arranged in the mixing barrel, more than three rotary wings are radially arranged on a shaft body inserted into the mixing barrel by the mixing shaft, a mixing scraper is longitudinally fixed at the tail end of each rotary wing, and the upper end of the mixing shaft penetrates out of the upper end cover and is connected with a mixing driving motor; the upper end cover is provided with a plurality of feeding holes, and each feeding hole is respectively connected with a material grinding machine for grinding different materials; and a lower end cover is provided with a falling hole.

9. The unshaped refractory for a lithium salt rotary kiln as claimed in claim 8, wherein: the sandwich extruder comprises an extruder frame, a plate pushing machine and an extruder body, wherein the plate pushing machine and the extruder body are arranged on the extruder frame;

the extruder body comprises a spiral homogenizing bin and an extruding bin, wherein a solid material feeding port and a liquid material feeding port are arranged at the upper end of the spiral homogenizing bin, the solid material feeding port is arranged below a falling hole and can receive materials discharged from the falling hole, the liquid material feeding port is connected with a liquid material storage bin through a liquid material guide pipe and a liquid material guide pump, a ridge stirring body is arranged in the spiral homogenizing bin, a ridge stirring driving motor is arranged on the front end cover of the spiral homogenizing bin and connected with and drives the ridge stirring body, a discharge port is formed in the rear end cover of the spiral homogenizing bin, and the discharge port is connected with the front ends of a plurality of discharge branch pipes through a discharge main pipe;

a forming cavity is arranged in the extruding bin, a rear end cover capable of sliding forwards along the inner wall of the forming cavity is installed at the rear end of the forming cavity, a plugboard hole is formed in the rear end cover, a front end cover is fixedly installed at the front end of the forming cavity, a forming hole is formed in the front end cover, and a forming hole cover capable of being opened and closed is formed in the forming hole; a plurality of blank feeding ports are respectively formed in four side walls of the forming cavity and are respectively connected with the rear end of each discharging branch pipe;

the plate pushing machine is arranged at the rear end of the plugboard hole; the push plate machine comprises a push plate cylinder, a rear end cover cylinder, a first push rod, a second push rod, a push plate, an upper guide plate and a lower guide plate, wherein the push plate cylinder and the rear end cover cylinder are both fixedly arranged on the frame of the extruder; the upper guide plate and the lower guide plate are respectively horizontally arranged at the upper side and the lower side of the rear end of the forming cavity, the lower surface of the upper guide plate is provided with a plurality of upper guide rollers, and the upper surface of the lower guide plate is provided with a plurality of lower guide rollers; the front end of the aluminum silicate fiber board is inserted into the inserting plate hole, the upper side surface and the lower side surface of the middle part of the aluminum silicate fiber board are respectively arranged between the upper guide roller and the lower guide roller, and the rear end of the aluminum silicate fiber board is abutted against the working surface of the push plate; the telescopic rod of the rear end cover cylinder is connected with the rear end of the second push rod, and the front end of the second push rod is connected with the rear end cover;

after the aluminum silicate fiber board is inserted into the forming cavity from the board inserting hole through the first push rod and the push plate by the push plate cylinder, starting a ridge stirring driving motor, enabling the ridge stirring driving motor to rotate, stirring uniformly the solid material put into the solid material feeding port and the liquid material put into the liquid material feeding port, conveying the mixed material to each discharging branch pipe through the discharging port, enabling the mixed material to enter the forming cavity, tightly wrapping the aluminum silicate fiber board in the forming cavity, and opening the forming hole cover until the mixed material is tightly filled in the forming cavity and tightly wrapped with the aluminum silicate fiber board; and simultaneously starting the push plate cylinder and the rear end cover cylinder, and synchronously pushing the material wrapped aluminum silicate fiberboard to extrude a strip-shaped green brick from the forming hole of the front end cover through the first push rod and the second push rod.

10. The unshaped refractory for a lithium salt rotary kiln as claimed in claim 9, wherein: the cutting device comprises a cutting rack, a tray slide rail is horizontally arranged on the cutting rack, the front end of the tray slide rail is connected with a forming hole of the extrusion bin, and the rear end of the tray slide rail is connected with the transferring manipulator; the rotary cutter is installed above the cutting machine frame above the tray slide rail through the lifting driving device, and the lifting driving device can drive the rotary cutter to move up and down and cut the bar-shaped green bricks into block-shaped refractory prefabricated parts.

Technical Field

The invention belongs to the technical field of refractory material production equipment, and particularly relates to an unshaped refractory material for a lithium salt rotary kiln.

Background

With the implementation of national policies of energy conservation, emission reduction and environmental protection, energy-saving refractory materials are increasingly valued by refractory material enterprises, and the technical development of refractory materials is gradually transited from traditional sintered and shaped products to unshaped refractory materials. The substitution of amorphous refractory materials for shaped and sintered products is a great trend and represents the development direction of refractory materials. In Japan and Europe, the unshaped refractories account for 70 parts or more of the total amount of the refractory, and in China, the unshaped refractories account for less than 50 parts of the total amount of the refractory. In the aspect of production line construction, the construction cost of a 10 ten thousand ton unshaped refractory material production line is equal to 1/20 of a shaped refractory material production line, in the aspect of energy consumption, the power consumption for producing one ton of unshaped products is about 1/8 of that for producing shaped products, and the coal consumption (natural gas) is about 1/10 of that for producing shaped fired products. Therefore, compared with the shaped refractory material, the unshaped refractory material has the advantages of being incomparable to investment construction, energy saving and consumption reduction. In China, the lithium salt rotary kiln refractory material is mainly selected by firing high-alumina products, the conditions of high energy consumption and excessive heat loss exist in the production process, and a production enterprise hopes to replace the existing product by a novel energy-saving refractory material, so the development of the novel energy-saving refractory material is in the process of production.

In view of the above, the applicant designs an unshaped refractory material for a lithium salt rotary kiln, which can be used for preparing a castable prefabricated member with a good energy-saving effect.

Disclosure of Invention

The invention aims to solve the technical problem of providing an unshaped refractory material for a lithium salt rotary kiln, which can be used for preparing a castable prefabricated member with a good energy-saving effect.

In order to solve the technical problems, the technical scheme of the invention is as follows: the rotary kiln is characterized by comprising a refractory prefabricated member and an anchoring member, wherein the refractory prefabricated member is installed and fixed on a rotary kiln body through the anchoring member; the refractory prefabricated part comprises a refractory prefabricated part body and an aluminum silicate fiber board, wherein the aluminum silicate fiber board is covered in the refractory prefabricated part body;

the refractory prefabricated part body comprises the following components in percentage by mass:

15-25 parts of bauxite particles with the particle size of 10-5;

10-20 parts of bauxite particles with the particle size of 5-3;

10-20 parts of mullite particles with the particle size of 3-1;

10-20 parts of mullite particles with the particle size of 1-0;

5-10 parts of corundum particles with the particle size of 1-0;

5-10 parts of corundum with the fineness of 200 meshes;

5-10 parts of composite micro powder;

2-6 parts of a compound water reducing agent;

2-6 parts of a binding agent;

the components of the fire-resistant prefabricated part body are crushed to preset grain sizes through different material mills, then the materials are uniformly mixed and are extruded together with the aluminum silicate fiber board through a sandwich extruder to form fire-resistant prefabricated part billets, and the fire-resistant prefabricated part billets are cut into blocks through a cutting device and are dried to obtain the fire-resistant prefabricated part.

Preferably, the composite micro powder comprises the following components in parts by weight:

α- Al₂O₃micro powder3-10 parts;

1-8 parts of silicon micropowder;

5-15 parts of tripolyphosphate or hexametaphosphate.

Preferably, the binder is tripolyphosphate or hexametaphosphate;

the compound water reducing agent comprises a polycarboxylic acid water reducing agent and a naphthalene water reducing agent, wherein the mass ratio of the polycarboxylic acid water reducing agent to the naphthalene water reducing agent is 1: 1.

preferably, the material grinding mill comprises an outer grinding shell, wherein the outer grinding shell comprises a feeding shell, a grinding shell and a discharging shell, the feeding shell, the grinding shell and the discharging shell are sequentially connected together from top to bottom, a main cavity and an auxiliary cavity are arranged in the feeding shell, a crankshaft is transversely arranged in the main cavity, a front end shaft of the crankshaft is mounted on the side wall of the main cavity through a bearing seat, a rear end shaft of the crankshaft is connected with a crankshaft driving motor, and the crankshaft driving motor is fixed on the side wall of the other side of the main cavity; the crankshaft comprises at least three connecting rod journals; the auxiliary cavity is communicated with the feeding shell; the feeding shell is in a funnel shape with a large upper part and a small lower part;

the feeding shell is in a funnel shape with a large upper part and a small lower part; more than three material grinding sub-cavities are longitudinally arranged in the material grinding shell; the upper end of each material grinding subchamber is provided with an annular inner convex ring, a plurality of outer wall grinding bar edges are longitudinally arranged on the inner convex ring, a grinding connecting rod is arranged in each material grinding subchamber, the upper end of the grinding connecting rod is hinged on a connecting rod shaft neck, the lower end of the grinding connecting rod is connected with a grinding ball, the grinding ball is positioned at the lower end of the inner concave ring, and a plurality of ball grinding bar edges are arranged on the outer peripheral wall of the grinding ball; the gap between the grinding ball and the side wall of the material grinding sub-cavity is smaller than the particle size of the final required particles of the material;

when the crankshaft driving motor drives the crankshaft to rotate, each grinding connecting rod can be driven to vertically move up and down, and then each grinding ball is driven to vertically move, so that the ball grinding strip edges and the outer wall grinding strip edges are matched to grind and crush materials falling from the upper side.

Preferably, the grinding device also comprises a grinding ball rotation driving device which is arranged below the grinding balls in the grinding material sub-cavity; the grinding connecting rod comprises an upper connecting rod body and a lower connecting rod body, the upper connecting rod body and the lower connecting rod body are coaxially and rotatably connected, and the lower end of the lower connecting rod body is fixedly connected with the grinding ball into a whole; a strip-shaped screw hole is formed upwards from the lower part of the grinding ball and extends upwards into the lower connecting rod body; the grinding ball rotation driving device comprises a fixed sieve tray, the fixed sieve tray is horizontally fixed below the material grinding sub-cavity, and sieve holes are formed in the fixed sieve tray; vertically fixing a rotary driving screw shaft at the central part above the fixed sieve tray, and inserting the upper end of the rotary driving screw shaft into the strip-shaped screw hole; when the grinding connecting rod moves up and down, the lower connecting rod body and the grinding balls can rotate along the rotary driving lead screw to move up and down, and then the grinding strip edges of the ball bodies rotate to grind materials.

Preferably, the grinding ball rotation driving device further comprises a sealing dust-blocking structure, the sealing dust-blocking structure comprises a silica gel dust-blocking ring and a silica gel telescopic dust-blocking pipe, the silica gel dust-blocking ring is in a horn mouth shape with a small upper part and a large lower part, the upper end of the silica gel dust-blocking ring is coaxially fixed on the lower part of the grinding ball, and the lower end of the silica gel dust-blocking ring is provided with an inwards concave annular outer blocking edge; the flexible dirt guard pipe of silica gel pipe suit is on the rotation drive lead screw, and the lower extreme of the flexible dirt guard pipe of silica gel connects fixed sieve dish, keeps off along in the upper end setting of the flexible dirt guard pipe of silica gel turns up the annular, keep off along with the annular in the annular outside keep off along the lock fixed together, when grinding ball rotatory removal from top to bottom, keep off along and the annular outside keeps off along can not unhook in the annular.

Preferably, the feeding shell comprises a funnel cavity and a straight pipe cavity which are coaxially arranged from top to bottom;

a flexible material shaking device is arranged in a straight pipe cavity of a feeding shell, and comprises a material shaking driving motor, a transmission rotating shaft, a material shaking motor mounting bracket, a plurality of flexible wear-resistant rubber material guide pipes and a plurality of vibrating rings; a plurality of material guide cylinders are arranged in the feeding shell, and each material guide cylinder is vertically connected with each material grinding sub-cavity below the material guide cylinder in a penetrating way; the rubber material guide pipe is arranged in the material guide cylinder, and the vibration ring is sleeved outside the rubber material guide pipe; the adjacent vibrating rings are connected through a vibrating connecting rod, and a vibrating spring is sleeved on the vibrating connecting rod between the adjacent material guide cylinders; the material shaking driving motor and the transmission rotating shaft are both arranged on the outer wall of the feeding shell through a material shaking motor mounting frame, a driving gear is arranged at the upper end of a motor shaft of the material shaking driving motor, a driven gear is arranged at the upper end of the transmission rotating shaft, and the driving gear and the driven gear are meshed with each other; the lower end of the transmission rotating shaft is connected with one end of a fixed folding rod, the other end of the folding rod is connected with a driving connecting rod, and the driving connecting rod is connected with an adjacent vibration ring;

a funnel-shaped rotating lining is arranged in the funnel cavity, and a plurality of material guide strips are arranged on the inner wall of the rotating lining along the direction of a bus; the lower end of the rotating lining is arranged in the funnel cavity through a dustproof bearing, and a lining driving outer gear ring is arranged on the periphery of the upper end of the rotating lining; a meshing through hole is formed in the side wall of the funnel cavity, and the driving gear is embedded into the meshing through hole and meshed with the lining driving outer gear ring; when the material shaking driving motor drives the driving gear to rotate, the rotating lining can be synchronously driven to rotate in the funnel cavity.

Preferably, the material mixing device further comprises a rotary material mixing device, wherein the rotary material mixing device comprises a funnel-shaped material mixing cylinder with a large upper end and a small lower end, the upper end and the lower end of the material mixing cylinder are respectively provided with an upper end cover and a lower end cover, a material mixing shaft is coaxially arranged in the material mixing cylinder, the material mixing shaft is inserted into a shaft body in the material mixing cylinder and radially provided with more than three rotary wings, the tail end of each rotary wing is longitudinally fixed with a material mixing scraper, and the upper end of the material mixing shaft penetrates out of the upper end cover and is connected with a material mixing driving motor; the upper end cover is provided with a plurality of feeding holes, and each feeding hole is respectively connected with a material grinding machine for grinding different materials; and a lower end cover is provided with a falling hole.

Preferably, the sandwich extruder comprises an extruder frame, a plate pushing machine and an extruder body, wherein the plate pushing machine and the extruder body are arranged on the extruder frame;

the extruder body comprises a spiral homogenizing bin and an extruding bin, wherein a solid material feeding port and a liquid material feeding port are arranged at the upper end of the spiral homogenizing bin, the solid material feeding port is arranged below a falling hole and can receive materials discharged from the falling hole, the liquid material feeding port is connected with a liquid material storage bin through a liquid material guide pipe and a liquid material guide pump, a ridge stirring body is arranged in the spiral homogenizing bin, a ridge stirring driving motor is arranged on the front end cover of the spiral homogenizing bin and connected with and drives the ridge stirring body, a discharge port is formed in the rear end cover of the spiral homogenizing bin, and the discharge port is connected with the front ends of a plurality of discharge branch pipes through a discharge main pipe;

a forming cavity is arranged in the extruding bin, a rear end cover capable of sliding forwards along the inner wall of the forming cavity is installed at the rear end of the forming cavity, a plugboard hole is formed in the rear end cover, a front end cover is fixedly installed at the front end of the forming cavity, a forming hole is formed in the front end cover, and a forming hole cover capable of being opened and closed is formed in the forming hole; a plurality of blank feeding ports are respectively formed in four side walls of the forming cavity and are respectively connected with the rear end of each discharging branch pipe;

the plate pushing machine is arranged at the rear end of the plugboard hole; the push plate machine comprises a push plate cylinder, a rear end cover cylinder, a first push rod, a second push rod, a push plate, an upper guide plate and a lower guide plate, wherein the push plate cylinder and the rear end cover cylinder are both fixedly arranged on the frame of the extruder; the upper guide plate and the lower guide plate are respectively horizontally arranged at the upper side and the lower side of the rear end of the forming cavity, the lower surface of the upper guide plate is provided with a plurality of upper guide rollers, and the upper surface of the lower guide plate is provided with a plurality of lower guide rollers; the front end of the aluminum silicate fiber board is inserted into the inserting plate hole, the upper side surface and the lower side surface of the middle part of the aluminum silicate fiber board are respectively arranged between the upper guide roller and the lower guide roller, and the rear end of the aluminum silicate fiber board is abutted against the working surface of the push plate; the telescopic rod of the rear end cover cylinder is connected with the rear end of the second push rod, and the front end of the second push rod is connected with the rear end cover;

after the aluminum silicate fiber board is inserted into the forming cavity from the board inserting hole through the first push rod and the push plate by the push plate cylinder, starting a ridge stirring driving motor, enabling the ridge stirring driving motor to rotate, stirring uniformly the solid material put into the solid material feeding port and the liquid material put into the liquid material feeding port, conveying the mixed material to each discharging branch pipe through the discharging port, enabling the mixed material to enter the forming cavity, tightly wrapping the aluminum silicate fiber board in the forming cavity, and opening the forming hole cover until the mixed material is tightly filled in the forming cavity and tightly wrapped with the aluminum silicate fiber board; and simultaneously starting the push plate cylinder and the rear end cover cylinder, and synchronously pushing the material wrapped aluminum silicate fiberboard to extrude a strip-shaped green brick from the forming hole of the front end cover through the first push rod and the second push rod.

Preferably, the cutting device comprises a cutting frame, a tray slide rail is horizontally arranged on the cutting frame, the front end of the tray slide rail is connected with a forming hole of the extrusion bin, and the rear end of the tray slide rail is connected with the transfer manipulator; the rotary cutter is installed above the cutting machine frame above the tray slide rail through the lifting driving device, and the lifting driving device can drive the rotary cutter to move up and down and cut the bar-shaped green bricks into block-shaped refractory prefabricated parts.

Compared with the prior art, the invention has the beneficial effects that:

1. the invention uses the castable, prefabricated parts and other unshaped refractory materials to complete the masonry construction of the lithium salt rotary kiln, belonging to the major technical breakthrough of the refractory materials for the lithium salt rotary kiln; the developed lithium salt unshaped prefabricated brick is added with the aluminum silicate fiberboard with excellent heat preservation effect in the production and manufacturing process, and the energy consumption can be saved by 15-20 parts in the using process compared with a fired product; in the masonry construction process, all refractory materials are fixed with the rotary kiln body through the anchoring pieces, integrity of the refractory materials is guaranteed, and the situation that the bricks fall off due to drawing sticks caused by movement of the rotary kiln is prevented. The composite water reducing agent is added in the invention, the composite water reducing agent comprises a polycarboxylic acid water reducing agent and a naphthalene water reducing agent, and the mass ratio of the polycarboxylic acid water reducing agent to the naphthalene water reducing agent is 1: 1, the polycarboxylic acid water reducing agent and the naphthalene water reducing agent can generate a synergistic effect, and the drying speed of the refractory material extruded piece is further accelerated.

2. The refractory material for the lithium salt rotary kiln is composed of high-quality high-alumina bauxite, corundum, mullite and the like, and the finished product has high-temperature strength and good thermal shock stability; the cost is reduced, the energy consumption is reduced, and the natural gas consumption can be saved by producing the lithium battery raw materials.

Drawings

FIG. 1 is a schematic structural view of a material mill (example II);

FIG. 2 is a schematic view of the structure of the milling chamber and the milling ball;

FIG. 3 is a schematic view of the structure of the milling subchamber and the milling ball in cooperation (example III);

FIG. 4 is a schematic structural diagram of a rotary mixing device and a spiral homogenizing silo;

FIG. 5 is a schematic view of the external structure of the extrusion chamber;

FIG. 6 is a schematic cross-sectional structure of an extrusion chamber;

FIG. 7 is a schematic perspective view of a bar-shaped green brick;

FIG. 8 is a schematic view of the structure of the cutting device;

FIG. 9 is a schematic structural view of the cut refractory preform;

FIG. 10 is a schematic view showing an operation state of the transfer robot;

in the figure: 1. a crankshaft; 2. a crankshaft drive motor; 3. rotating the lining; 4. a funnel cavity; 5. a straight lumen; 6. a vibrating ring; 7. a rubber material guide pipe; 8. a vibration link; 9. a vibration spring; 10. grinding and dividing cavities; 11. grinding the ball; 12. a discharging shell; 13. grinding the material shell; 14. an inner collar; 15. a drive link; 16. fixing the folding rod; 17. a material shaking motor mounting rack; 18. a transmission rotating shaft; 19. a material shaking driving motor; 20. a driven gear; 21. a driving gear; 22. a secondary cavity; 23. a bearing seat; 24. a main chamber; 25. a connecting rod journal; 26. grinding the connecting rod; 27. grinding the inner wall into strip edges; 28. grinding the strip edges by using the spheres; 29. a strip-shaped screw hole; 30. rotating the drive screw shaft; 31. an annular inner blocking edge; 32. an annular outer blocking edge; 33. a silica gel telescopic dust blocking pipe; 34. fixing the sieve tray; 35. a mixing shaft; 36. a feeding hole; 37. a mixing barrel; 38. a material mixing scraper plate; 39. rotating the fins; 40. dropping a hole; 41. a ridge stirring driving motor; 42. a solid material feeding port; 43. a spiral material homogenizing bin; 44. a liquid material inlet; 45. a main discharge pipe; 46. discharging and pipe dividing; 47. a second push rod; 48. a first push rod; 49. pushing the plate; 50. an upper guide roller; 51. an upper guide plate; 52. extruding a bin; 53. a blank feeding port; 54. a front end cover; 55. a rear end cap; 56. a lower guide plate; 57. a lower guide roller; 58. an aluminum silicate fiberboard; 59. a strip-shaped green brick; 60. rotating the cutter; 61. a lift drive; 62. a tray slide rail; 63. a cutter frame; 64. a refractory preform; 65. a transfer robot; 66. silica gel dust ring.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.