Grinding device and method for raw material slurry for aluminum oxide production

Abstract

The invention relates to the technical field of aluminum oxide production, in particular to an aluminum oxide production raw material slurry grinding device and method.The aluminum oxide production raw material slurry grinding device comprises a shell, a material guiding box, a feeding pipe, a liquid inlet pipe and a mounting assembly, and the mounting assembly comprises a driving block, a gear, a rack, a rotating block, a connecting block, a movable block, a smashing roller and a fixed block; the fixed state of the movable block in the sliding groove of the connecting block is relieved, the fixed state of the smashing roller on the outer side of the connecting block is relieved, then the movable block is taken out of the sliding groove of the connecting block, and therefore the smashing roller can be taken out of the material guide box, and the smashing roller is disassembled; therefore, when the crushing roller is abraded, the crushing roller can be taken out from the material guide box and replaced with a new crushing roller, the whole raw material pulp grinding device does not need to be replaced, and the use cost of the raw material pulp grinding device is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of alumina production, and in particular to a device and method for grinding raw material slurry for alumina production. Background Art

[0002] With the continuous development of science and technology in my country, alumina is widely used in electrolytic aluminum, ceramics, medicine, electronics, machinery and other industries. In the production process of alumina, it is usually necessary to grind the bauxite raw materials first, and then add the mother liquor to obtain the raw material slurry.

[0003] Most of the existing raw material slurry grinding devices include a ball mill and a discharge hopper. The material enters the ball mill through the discharge hopper for grinding, and the Bayer process circulating mother liquor needs to be added. Generally, a buffer structure is arranged in the feed pipe to protect it from being damaged by impact. However, the material is not pretreated, resulting in the feed structure being easily damaged due to its large volume, and it is easy to get stuck in the feed pipe, thereby reducing the utilization efficiency of the grinding device. Therefore, a crushing roller is provided to crush the material, thereby avoiding the phenomenon that the feed structure is easily damaged due to its large volume, and it is easy to get stuck in the feed pipe, thereby improving the utilization efficiency of the grinding device.

[0004] During the long-term use of the crushing roller, the crushing roller is easily worn, but the crushing roller of the existing raw material slurry grinding device is fixedly installed in the device, resulting in that the worn crushing roller cannot be taken out of the device for replacement, so that the entire raw material slurry grinding device needs to be replaced after the crushing roller is worn, thereby increasing the use cost of the raw material slurry grinding device. Summary of the invention

[0005] The object of the present invention is to provide a raw material slurry grinding device and method for alumina production, which solves the technical problem that the crushing roller of the existing raw material slurry grinding device is fixedly installed in the device, resulting in that the worn crushing roller cannot be taken out of the device for replacement, so that the entire raw material slurry grinding device needs to be replaced after the crushing roller is worn, thereby increasing the use cost of the raw material slurry grinding device.

[0006] To achieve the above-mentioned purpose, the present invention provides an alumina production raw material slurry grinding device, comprising a shell, a material guide box, a feed pipe and a liquid inlet pipe, the material guide box is connected to the shell and is located on the outside of the shell, the feed pipe is connected to the material guide box and is located on the upper surface of the material guide box, the liquid inlet pipe is connected to the material guide box and is located on the side of the material guide box close to the shell, and also includes a mounting assembly; the mounting assembly includes a driving block, a gear, a rack, a rotating block, a connecting block, a movable block, a crushing roller and a fixed block, the driving block is used to drive the gear to move, the gear is located on the side of the driving block away from the material guide box, the rack is meshed with the gear and is located on the upper surface of the gear, the rotating block is used to rotate the connecting block, the connecting block is located on the side of the rotating block away from the rack, the movable block is detachably connected to the connecting block and is located on the side of the connecting block away from the rotating block, the crushing roller is fixed on the side of the movable block away from the connecting block, and the fixed block is used to limit and fix the movable block.

[0007] Wherein, the driving block includes a support plate, a driving motor and a rotating shaft, the support plate is fixed on a side of the material guide box away from the liquid inlet pipe; the driving motor is fixed on the upper surface of the support plate; the two sides of the rotating shaft are respectively connected to the output end of the driving motor and the gear, and the rotating shaft is located between the driving motor and the gear.

[0008] Wherein, the rotating block includes a rotating motor and a rotating rod, the rotating motor is fixed on the upper surface of the rack; the two ends of the rotating rod are respectively connected to the output end of the rotating motor and the connecting block, and the rotating rod passes through the material guide box.

[0009] Wherein, the alumina production raw material slurry grinding device also includes a transmission component, and the transmission component is used to transmit the material.

[0010] Wherein, the transmission component includes a support frame, a connecting spring and a material guide block, the support frame is fixed on the inner side of the material guide box; the connecting spring is fixed on the upper surface of the support frame; the material guide block is fixed on the upper surface of the connecting spring.

[0011] Among them, the transmission component also includes a control motor, a rotating rod and a spiral blade. The control motor is fixed on a side of the material guide box close to the gear; the rotating rod is connected to the output end of the control motor and passes through the material guide box; the spiral blade is fixed on the outside of the rotating rod and is located on the inside of the material guide box.

[0012] The present invention also provides a method for grinding raw material slurry for producing aluminum oxide, comprising the following steps:

[0013] After aligning the sliding grooves of the movable block with those of the connecting block, the movable block is pushed into the sliding groove of the connecting block until the movable block is aligned with the circular through hole of the connecting block, thereby driving the crushing roller to be installed on the outside of the connecting block;

[0014] Insert the fixing bolt into the circular through holes of the connecting block and the movable block, and then tighten the fixing nut on the outside of the fixing bolt, so that the movable block is limited and fixed in the sliding groove of the connecting block, thereby installing the crushing roller;

[0015] The driving motor is started, and the power output from the output end of the driving motor drives the rotating shaft to rotate, thereby driving the gear to rotate, and then driving the crushing roller to move longitudinally in the material guide box, so that the distance between the two crushing rollers matches the size of the material;

[0016] Pour the material into the feed pipe, and the material will enter the material guide box from the feed pipe, and then the material will be crushed between the two crushing rollers;

[0017] After being crushed, the material will fall onto the guide block on the right, then fall from the guide block on the right to the guide block on the left, and finally fall from the guide block on the left to the bottom of the guide box;

[0018] Pour the mother liquid into the liquid inlet pipe, and the mother liquid will enter the bottom of the material guide box from the liquid inlet pipe;

[0019] Start the control motor, and the power output from the output end of the control motor drives the rotating rod to rotate, thereby driving the spiral blade to rotate, and then driving the material and the mother liquor at the bottom of the material guide box to be transported from the material guide box to the shell, completing the grinding of the raw material slurry for alumina production.

[0020] The present invention provides an alumina production raw material slurry grinding device and method. When the crushing blade on the outer side of the crushing roller is worn, the fixed state of the movable block in the slide groove of the connecting block is released, so that the fixed state of the crushing roller on the outer side of the connecting block is released, and then the movable block is taken out from the slide groove of the connecting block, so that the crushing roller can be taken out of the material guide box, and the crushing roller can be disassembled. By disassembling the crushing roller, the crushing roller can be taken out of the material guide box when the crushing roller is worn and replaced with a new one, so there is no need to replace the entire raw material slurry grinding device, thereby reducing the use cost of the raw material slurry grinding device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0022] Figure 1 It is a schematic diagram of the overall structure of the alumina production raw material slurry grinding device according to the first embodiment of the present invention.

[0023] Figure 2 1 is a schematic cross-sectional view along the rotating rod of the first embodiment of the present invention.

[0024] Figure 3 The first embodiment of the present invention Figure 2 Enlarged view of point A.

[0025] Figure 4 1 is a schematic cross-sectional view along the fixing bolt of the first embodiment of the present invention.

[0026] Figure 5 The first embodiment of the present invention Figure 4 Enlarged view of point B.

[0027] Figure 6 It is a schematic structural diagram of the transmission component of the alumina production raw material slurry grinding device according to the second embodiment of the present invention.

[0028] Figure 7 The second embodiment of the present invention Figure 6 Enlarged view of point C.

[0029] Figure 8 It is a process step diagram of the method for grinding raw material slurry for the production of alumina according to the third embodiment of the present invention.

[0030] In the figure: 101-shell, 102-material guide box, 103-feeding pipe, 104-liquid inlet pipe, 105-gear, 106-rack, 107-connecting block, 108-movable block, 109-crushing roller, 110-support plate, 111-driving motor, 112-rotating shaft, 113-rotating motor, 114-rotating rod, 115-fixing bolt, 116-fixing nut, 201-support frame, 202-connecting spring, 203-material guide block, 204-guide rod, 205-guide sleeve, 206-control motor, 207-rotating rod, 208-spiral blade. DETAILED DESCRIPTION

[0031] Embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0032] First embodiment:

[0033] See also Figures 1 to 5 ,in Figure 1 This is a schematic diagram of the overall structure of the raw material slurry grinding device for alumina production. Figure 2 is a schematic cross-sectional view along the rotating rod 114, Figure 3 is a schematic cross-sectional view along the fixing bolt 115, Figure 4 is a schematic cross-sectional view along the fixing bolt 115, Figure 5 yes Figure 4 The enlarged view of point B shows that the present invention provides a raw material slurry grinding device for alumina production, including a shell 101, a material guide box 102, a feed pipe 103, a liquid inlet pipe 104 and a mounting assembly, wherein the mounting assembly includes a driving block, a gear 105, a rack 106, a rotating block, a connecting block 107, a movable block 108, a crushing roller 109 and a fixed block, wherein the driving block includes a support plate 110, a driving motor 111 and a rotating shaft 112, wherein the rotating block includes a rotating motor 113 and a rotating rod 114, and wherein the fixed block includes a fixing bolt 115 and a fixing nut 116.

[0034] In this embodiment, the material guide box 102 is connected to the shell 101 and is located on the outside of the shell 101. The feed pipe 103 is connected to the material guide box 102 and is located on the upper surface of the material guide box 102. The liquid inlet pipe 104 is connected to the material guide box 102 and is located on the side of the material guide box 102 close to the shell 101. The shell 101 and the material guide box 102 are both hollow structures, and the shell 101 is connected to the material guide box 102, so that The material and mother liquor in the material guide box 102 can be transferred to the shell 101 for further processing of the material and mother liquor. The feed pipe 103 is connected with the material guide box 102, so that the material entering the feed pipe 103 can enter the material guide box 102 from the feed pipe 103. The liquid inlet pipe 104 is connected with the material guide box 102, so that the mother liquor entering the liquid inlet pipe 104 can enter the material guide box 102 from the liquid inlet pipe 104.

[0035] The driving block is used to drive the gear 105 to move, and the gear 105 is located on the side of the driving block away from the material guide box 102. The rack 106 is meshed with the gear 105 and is located on the upper surface of the gear 105. The rotating block is used to rotate the connecting block 107, and the connecting block 107 is located on the side of the rotating block away from the rack 106. The movable block 108 is detachably connected to the connecting block 107 and is located on the side of the connecting block 107 away from the rotating block. The crushing roller 109 is fixed on the side of the movable block 108 away from the connecting block 107. The fixed block is used to limit and fix the movable block 108. The gear 105 can rotate along the axis of the gear 105 on the outside of the material guide box 102. It is meshed with the gear 105, so that the rotation of the gear 105 along the axis of the gear 105 can drive the rack 106 to move longitudinally outside the gear 105, the connecting block 107 has a slide groove, and the movable block 108 cooperates with the slide groove of the connecting block 107, so that the movable block 108 can move up and down in the slide groove of the connecting block 107, and then drive the crushing roller 109 to move up and down in the guide box 102, the number of the crushing rollers 109 is two, and they are respectively located at the front and rear sides of the guide box 102, and the crushing blades are evenly distributed on the outside of the crushing rollers 109, and the crushing blades on the outside of the two crushing rollers 109 are staggered, so that the material can be crushed between the two crushing rollers 109.

[0036] Secondly, the support plate 110 is fixed on a side of the material guide box 102 away from the liquid inlet pipe 104; the drive motor 111 is fixed on the upper surface of the support plate 110; the two sides of the rotating shaft 112 are respectively connected to the output end of the drive motor 111 and the gear 105, the rotating shaft 112 is located between the drive motor 111 and the gear 105, the output end of the drive motor 111 is connected to the rotating shaft 112, and drives the rotating shaft 112 to rotate along the axis of the rotating shaft 112, thereby driving the gear 105 to rotate along the axis of the rotating shaft 112.

[0037] At the same time, the rotating motor 113 is fixed on the upper surface of the rack 106; the two ends of the rotating rod 114 are respectively connected to the output end of the rotating motor 113 and the connecting block 107, the rotating rod 114 passes through the guide box 102, the rotating rod 114 passes through the guide box 102, the guide box 102 has a slot and a groove, the number of the rotating rod 114 is two, and they are respectively located on the left and right sides of the crushing roller 109, the rotating rod 114 on the left passes through the slot of the guide box 102, the rotating rod 114 on the right is located in the groove of the guide box 102, and the left side The rotating rod 114 can move longitudinally in the slot of the material guide box 102, and the rotating rod 114 on the right can move longitudinally and rotate in the groove of the material guide box 102. The output end of the rotating motor 113 is connected to the rotating rod 114 on the left, and drives the rotating rod 114 on the left to rotate along the axis of the rotating rod 114, thereby driving the connecting block 107 to rotate along the axis of the rotating rod 114 in the material guide box 102, and further driving the crushing roller 109 to rotate along the axis of the rotating rod 114 in the material guide box 102.

[0038] In addition, the fixing bolt 115 is detachably connected to the connecting block 107 and the movable block 108 respectively, and the fixing bolt 115 passes through the connecting block 107 and the movable block 108; the fixing nut 116 is detachably connected to the fixing bolt 115 and is sleeved on the outside of the fixing bolt 115, the connecting block 107 and the movable block 108 are both provided with circular through holes, the sizes of the circular through holes of the connecting block 107 and the movable block 108 are consistent, the fixing bolt 115 passes through the circular through holes of the connecting block 107 and the movable block 108, and the fixing nut 116 is threadedly connected to the fixing bolt 115, so that the fixing nut 116 can be tightened or loosened on the fixing bolt 115.

[0039] When using the alumina production raw material slurry grinding device of the present embodiment, during installation, the movable block 108 is aligned with the slide groove of the connecting block 107 and then the movable block 108 is pushed into the slide groove of the connecting block 107, thereby driving the crushing roller 109 to move up and down on the outside of the connecting block 107. When the movable block 108 is aligned with the circular through hole of the connecting block 107, the fixing bolt 115 is inserted into the circular through hole of the connecting block 107 and the movable block 108, and then the fixing nut 116 is tightened on the outside of the fixing bolt 115, so that the movable block 108 is limited and fixed in the slide groove of the connecting block 107, thereby making the crushing roller 109 move up and down at the outside of the connecting block 107. The outer side of the connecting block 107 is limited and fixed to realize the installation of the crushing roller 109, and then the driving motor 111 is started, so that the power output from the output end of the driving motor 111 drives the rotating shaft 112 to rotate along the axis of the rotating shaft 112, thereby driving the gear 105 to rotate along the axis of the rotating shaft 112 on the outer side of the guide box 102, and then driving the rack 106 to move longitudinally on the outer side of the guide box 102. The longitudinal movement of the rack 106 on the outer side of the guide box 102 drives the rotating motor 113 to move longitudinally on the outer side of the guide box 102, thereby driving the rotating rod 114 to move in the slot of the guide box 102. The crushing roller 109 can be moved longitudinally, thereby driving the crushing roller 109 to move longitudinally in the material guide box 102, so that the distance between the two crushing rollers 109 can be adjusted, so that the distance between the two crushing rollers 109 matches the size of the material, and then the material is poured into the feeding pipe 103, so that the material enters the material guide box 102 from the feeding pipe 103, and the rotating motor 113 is started, so that the power output from the output end of the rotating motor 113 drives the rotating rod 114 to rotate along the axis of the rotating rod 114, thereby driving the connecting block 107 to rotate along the axis of the rotating rod 114 in the material guide box 102, and then driving the movable block 108 to rotate in the material guide box 102. The guide box 102 rotates along the axis of the rotating rod 114, and the movable block 108 rotates along the axis of the rotating rod 114 in the guide box 102, thereby driving the crushing roller 109 to rotate along the axis of the rotating rod 114 in the guide box 102, so as to crush the materials between the two crushing rollers 109. When the crushing blades on the outer sides of the crushing rollers 109 are worn, the fixing nut 116 is loosened on the outer sides of the fixing bolts 115, and then the fixing bolts 115 are removed from the circular through holes of the connecting block 107 and the movable block 108.Thus, the fixed state of the movable block 108 in the chute of the connecting block 107 is released, and then the fixed state of the crushing roller 109 outside the connecting block 107 is released. Then, the movable block 108 is taken out of the chute of the connecting block 107, so that the crushing roller 109 can be taken out of the guide box 102, and the crushing roller 109 is disassembled. By disassembling the crushing roller 109, the crushing roller 109 can be taken out of the guide box 102 when the crushing roller 109 is worn and replaced with a new one, so that there is no need to replace the entire raw material slurry grinding device, thereby reducing the use cost of the raw material slurry grinding device.

[0040] Second embodiment:

[0041] Based on the first embodiment, please refer to Figure 6 and Figure 7 , Figure 6 is a schematic structural diagram of a transmission assembly of an alumina production raw material slurry grinding device according to a second embodiment, Figure 7 yes Figure 6 The enlarged view of point C of the present invention shows that an alumina production raw material slurry grinding device also includes a transmission component, and the transmission component includes a support frame 201, a connecting spring 202, a guide block 203, a guide rod 204, a guide sleeve 205, a control motor 206, a rotating rod 207 and a spiral blade 208.

[0042] In this embodiment, the transmission component is located on the side of the material guide box 102 away from the feed pipe 103, and is used to transmit the crushed material and the mother liquor poured into the material guide box 102, so as to facilitate the transmission of the material and the mother liquor to the shell 101 for further processing.

[0043] Among them, the support frame 201 is fixed on the inner side of the material guide box 102; the connecting spring 202 is fixed on the upper surface of the support frame 201; the guide block 203 is fixed on the upper surface of the connecting spring 202, and the guide block 203 is in the shape of a triangular prism. The connecting spring 202 is provided with a damper. When the connecting spring 202 is extended and swung, the damper of the connecting spring 202 will generate a damping force to prevent the connecting spring 202 from extending and swaying, so that the shaking of the connecting spring 202 will eventually stop and will not continue to shake. When the material falls onto the guide block 203, the guide block 203 will be moved up and down by gravity, thereby driving the connecting spring 202 to extend and sway. Since the connecting spring 202 has a self-recovering effect, the connecting spring 202 will buffer the up and down movement of the guide block 203.

[0044] Secondly, the guide rod 204 is fixed on the upper surface of the support frame 201 and is located on the inner side of the connecting spring 202; the guide sleeve 205 is slidably connected to the guide rod 204 and is fixed on the lower surface of the guide block 203 and is located on the inner side of the connecting spring 202. The guide rod 204 is a structure with a hollow interior and an open upper side. Part of the guide sleeve 205 extends into the guide rod 204, and the guide sleeve 205 can move up and down in the guide rod 204.

[0045] At the same time, the control motor 206 is fixed on one side of the material guide box 102 close to the gear 105; the rotating rod 207 is connected to the output end of the control motor 206 and passes through the material guide box 102; the spiral blade 208 is fixed on the outside of the rotating rod 207 and is located on the inside of the material guide box 102. The output end of the control motor 206 is connected to the rotating rod 207 and drives the rotating rod 207 to rotate along the axis of the rotating rod 207, thereby driving the spiral blade 208 to rotate along the axis of the rotating rod 207 in the material guide box 102, and then the material and mother liquor at the bottom of the material guide box 102 can be transferred to the shell 101.

[0046] When using the alumina production raw material slurry grinding device of the present embodiment, after the material is crushed, the material will fall onto the guide block 203 on the right, and gradually fall from the guide block 203 on the right to the guide block 203 on the left. When the material falls onto the guide block 203, the guide block 203 will move up and down under the action of gravity, thereby driving the guide sleeve 205 to move up and down in the guide rod 204. At this time, the connecting spring 202 will stretch and shake. Since the connecting spring 202 has a self-recovering effect, the connecting spring 202 will buffer the up and down movement of the guide block 203, and then buffer the falling force of the material to avoid the material from falling during the falling process. The material guide box 102 is damaged. When the material falls from the material guide block 203 on the left to the bottom of the material guide box 102, the mother liquor is poured into the liquid inlet pipe 104, so that the mother liquor enters the bottom of the material guide box 102 from the liquid inlet pipe 104, and then the control motor 206 is started, so that the power output from the output end of the control motor 206 drives the rotating rod 207 to rotate along the axis of the rotating rod 207, thereby driving the spiral blade 208 to rotate the material guide block 203 on the left side of the material guide box 102, and then driving the material and mother liquor at the bottom of the material guide box 102 to be transported from the material guide box 102 to the shell 101, completing the grinding of the raw material slurry in the alumina production process.

[0047] Third embodiment:

[0048] Based on the second embodiment, please refer to Figure 8 , Figure 8 1 is a flow chart of a method for grinding alumina production raw material slurry in a third embodiment. The present invention also provides a method for grinding alumina production raw material slurry, comprising the following steps:

[0049] S101, after aligning the movable block 108 with the slide groove of the connecting block 107, push the movable block 108 into the slide groove of the connecting block 107 until the movable block 108 is aligned with the circular through hole of the connecting block 107, thereby driving the crushing roller 109 to be installed on the outside of the connecting block 107;

[0050] S102, inserting the fixing bolt 115 into the circular through holes of the connecting block 107 and the movable block 108, and then tightening the fixing nut 116 on the outside of the fixing bolt 115, so that the movable block 108 is limited and fixed in the slide groove of the connecting block 107, so as to install the crushing roller 109;

[0051] S103, starting the driving motor 111, the power output from the output end of the driving motor 111 drives the rotating shaft 112 to rotate, thereby driving the gear 105 to rotate, and then driving the crushing roller 109 to move longitudinally in the material guide box 102, so that the distance between the two crushing rollers 109 matches the size of the material;

[0052] S104, pouring the material into the feed pipe 103, the material will enter the material guide box 102 from the feed pipe 103, and the material will be crushed between the two crushing rollers 109;

[0053] S105, after being crushed, the material will fall onto the material guide block 203 on the right, then fall from the material guide block 203 on the right to the material guide block 203 on the left, and finally fall from the material guide block 203 on the left to the bottom of the material guide box 102;

[0054] S106, pouring the mother liquid into the liquid inlet pipe 104, and the mother liquid will enter the bottom of the material guide box 102 from the liquid inlet pipe 104;

[0055] S107, start the control motor 206, the power output from the output end of the control motor 206 drives the rotating rod 207 to rotate, thereby driving the spiral blade 208 to rotate, and further driving the material and the mother liquor at the bottom of the material guide box 102 to be transported from the material guide box 102 to the shell 101, completing the grinding of the raw material slurry for alumina production.

[0056] When using the alumina production raw material slurry grinding method of the present embodiment, after aligning the movable block 108 with the slide groove of the connecting block 107, the movable block 108 is pushed into the slide groove of the connecting block 107, thereby driving the crushing roller 109 to move up and down on the outside of the connecting block 107. When the movable block 108 is aligned with the circular through hole of the connecting block 107, the fixing bolt 115 is inserted into the circular through hole of the connecting block 107 and the movable block 108, and then the fixing nut 116 is tightened on the outside of the fixing bolt 115, so that the movable block 108 is limited and fixed in the slide groove of the connecting block 107, and then the crushing roller 109 is moved on the outside of the connecting block 107. The crushing roller 109 is installed by limiting and fixing, and then the driving motor 111 is started, so that the power output from the output end of the driving motor 111 drives the rotating shaft 112 to rotate along the axis of the rotating shaft 112, thereby driving the gear 105 to rotate along the axis of the rotating shaft 112 on the outside of the guide box 102, and then driving the rack 106 to move longitudinally on the outside of the guide box 102. The longitudinal movement of the rack 106 on the outside of the guide box 102 drives the rotating motor 113 to move longitudinally on the outside of the guide box 102, thereby driving the rotating rod 114 to move longitudinally in the slot of the guide box 102, and then driving the crushing roller The rollers 109 are moved longitudinally in the guide box 102 so as to adjust the distance between the two crushing rollers 109 so as to match the size of the material. The material is then poured into the feed pipe 103 so that the material enters the guide box 102 from the feed pipe 103. The rotating motor 113 is started so that the power output from the output end of the rotating motor 113 drives the rotating rod 114 to rotate along the axis of the rotating rod 114, thereby driving the connecting block 107 to rotate along the axis of the rotating rod 114 in the guide box 102, and further driving the movable block 108 to rotate along the axis of the rotating rod 114 in the guide box 102. The movable block 108 rotates along the axis of the rotating rod 114 in the guide box 102, thereby driving the crushing roller 109 to rotate along the axis of the rotating rod 114 in the guide box 102, so as to crush the material between the two crushing rollers 109. After the material is crushed, the material will fall onto the guide block 203 on the right, and gradually fall from the guide block 203 on the right to the guide block 203 on the left. When the material falls onto the guide block 203, the guide block 203 will move up and down due to gravity, thereby driving the guide sleeve 205 to move up and down in the guide rod 204.At this time, the connecting spring 202 will stretch and shake. Since the connecting spring 202 has a self-restoring effect, the connecting spring 202 will buffer the up and down movement of the guide block 203, and then buffer the falling force of the material to prevent the material from damaging the guide box 102 during the falling process. When the material falls from the guide block 203 on the left to the bottom of the guide box 102, the mother liquid is poured into the liquid inlet pipe 104, so that the mother liquid will flow out of the liquid inlet pipe 104. Enter the bottom of the guide box 102, then start the control motor 206, so that the power output from the output end of the control motor 206 drives the rotating rod 207 to rotate along the axis of the rotating rod 207, thereby driving the spiral blade 208 to rotate the guide block 203 on the left side of the guide box 102, and then driving the material and mother liquor at the bottom of the guide box 102 to be transported from the guide box 102 to the shell 101, completing the grinding of the raw material slurry in the alumina production process.

[0057] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A raw material slurry grinding device for alumina production, comprising a shell, a material guide box, a feed pipe and a liquid inlet pipe, wherein the material guide box is connected to the shell and is located outside the shell, the feed pipe is connected to the material guide box and is located on the upper surface of the material guide box, and the liquid inlet pipe is connected to the material guide box and is located on a side of the material guide box close to the shell, characterized in that: Also included are mounting components; The mounting assembly includes a driving block, a gear, a rack, a rotating block, a connecting block, a movable block, a crushing roller and a fixed block, the driving block is used to drive the gear to move, the gear is located on the side of the driving block away from the material guide box, the rack is meshed with the gear and is located on the upper surface of the gear, the rotating block is used to rotate the connecting block, the connecting block is located on the side of the rotating block away from the rack, the movable block is detachably connected to the connecting block and is located on the side of the connecting block away from the rotating block, the crushing roller is fixedly arranged on the side of the movable block away from the connecting block, and the fixed block is used to limit and fix the movable block.

2. The alumina production raw material slurry grinding device according to claim 1, characterized in that: The driving block includes a support plate, a driving motor and a rotating shaft. The support plate is fixed on a side of the material guide box away from the liquid inlet pipe; the driving motor is fixed on the upper surface of the support plate; the two sides of the rotating shaft are respectively connected to the output end of the driving motor and the gear, and the rotating shaft is located between the driving motor and the gear.

3. The alumina production raw material slurry grinding device according to claim 1, characterized in that: The rotating block includes a rotating motor and a rotating rod. The rotating motor is fixed on the upper surface of the rack. The two ends of the rotating rod are respectively connected to the output end of the rotating motor and the connecting block. The rotating rod passes through the material guide box.

4. The alumina production raw material slurry grinding device according to claim 1, characterized in that: The alumina production raw material slurry grinding device also includes a transmission component, which is used to transmit materials.

5. The alumina production raw material slurry grinding device according to claim 4, characterized in that: The transmission component includes a support frame, a connecting spring and a material guide block. The support frame is fixed on the inner side of the material guide box; the connecting spring is fixed on the upper surface of the support frame; and the material guide block is fixed on the upper surface of the connecting spring.

6. The alumina production raw material slurry grinding device according to claim 5, characterized in that: The transmission component also includes a control motor, a rotating rod and a spiral blade. The control motor is fixed on a side of the material guide box close to the gear; the rotating rod is connected to the output end of the control motor and passes through the material guide box; the spiral blade is fixed on the outside of the rotating rod and is located on the inside of the material guide box.

7. A method for grinding alumina production raw material slurry, applied to the alumina production raw material slurry grinding device according to any one of claims 1 to 6, characterized in that: The following steps are involved: After aligning the sliding grooves of the movable block with those of the connecting block, the movable block is pushed into the sliding groove of the connecting block until the movable block is aligned with the circular through hole of the connecting block, thereby driving the crushing roller to be installed on the outside of the connecting block; Insert the fixing bolt into the circular through holes of the connecting block and the movable block, and then tighten the fixing nut on the outside of the fixing bolt, so that the movable block is limited and fixed in the sliding groove of the connecting block, thereby installing the crushing roller; The driving motor is started, and the power output from the output end of the driving motor drives the rotating shaft to rotate, thereby driving the gear to rotate, and then driving the crushing roller to move longitudinally in the material guide box, so that the distance between the two crushing rollers matches the size of the material; Pour the material into the feed pipe, and the material will enter the material guide box from the feed pipe, and then the material will be crushed between the two crushing rollers; After being crushed, the material will fall onto the guide block on the right, then fall from the guide block on the right to the guide block on the left, and finally fall from the guide block on the left to the bottom of the guide box; Pour the mother liquid into the liquid inlet pipe, and the mother liquid will enter the bottom of the material guide box from the liquid inlet pipe; Start the control motor, and the power output from the output end of the control motor drives the rotating rod to rotate, thereby driving the spiral blade to rotate, and then driving the material and the mother liquor at the bottom of the material guide box to be transported from the material guide box to the shell, completing the grinding of the raw material slurry for alumina production.

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