An enhanced mixing and granulating integrated machine and an enhanced mixing and granulating method thereof

Abstract

A reinforced mixing and granulating integrated machine comprises a cylinder, a paddle shaft, a support system, a cylinder drive system, and a paddle shaft drive system. The cylinder is arranged horizontally and tilted on the support system, and a feed port and a discharge port are provided at both ends of the cylinder, respectively. The paddle shaft is arranged in the cylinder and passes through both ends of the cylinder. The cylinder drive system is arranged at the bottom outside the cylinder. The paddle shaft drive system is arranged outside the cylinder and connected to the paddle shaft. Along the direction of material movement, the paddle shaft is provided with mixing and stirring blades in the upstream section inside the cylinder, and spiral granulating blades in the downstream section inside the cylinder. On the basis of the existing cylindrical mixer / granulator, the present invention adds a paddle shaft inside the cylinder, and the paddle shaft is simultaneously installed with mixing and stirring blades and spiral granulating blades, thereby converting the traditional passive mixer / granulator into an enhanced mixing and granulating integrated machine with active and passive coupling, improving the mixing and granulating effect and efficiency, and also reducing energy consumption and saving space.

Description

Technical Field

[0001] The invention relates to a material mixing and granulating device and method, in particular to an enhanced mixing and granulating integrated machine and an enhanced mixing and granulating method thereof, and belongs to the field of bulk material granulation. Background Art

[0002] In the steel industry, sintering is the process of agglomerating fine ore concentrates, rich ore powders, and secondary iron-containing raw materials of varying composition and particle size into agglomerates. Because fine ore concentrates, rich ore powders, and secondary iron-containing raw materials are all finely divided and cannot be sintered directly, they must first be mixed and processed into granular materials of a certain volume before use. Therefore, mixing and granulation are crucial steps in the sintering process.

[0003] Existing technology for mixing and granulating sintering raw materials primarily utilizes a cylindrical mixer / granulator. During the mixing and granulation process, the material enters from the higher end and rotates at a certain speed as the cylinder rotates, driving the material inside the cylinder up along the wall. When the material is lifted to a certain height, where the angle of lift of the particles is greater than the angle of repose, the pile collapses, causing the material to slide relative to the surface. During this sliding process, mixing and granulation are completed, and the material is ultimately discharged from the lower end outlet. Because cylindrical mixers / granulators are passive devices, their ability to convert mechanical energy into mixing and granulation is limited. The resulting material motion intensity is weak, resulting in poor mixing and granulation effectiveness and low efficiency. Therefore, existing sintering mixing and granulation processes often utilize a two- or three-stage mixing and granulation method. The first stage typically uses a cylindrical mixer to mix the sintering raw materials, while the subsequent one or two stages use a cylindrical granulator for granulation. This existing sintering mixing and granulation method results in high energy consumption for the mixing and granulation system and a large equipment footprint, which to some extent restricts the development trend of green and low-cost sintering technology. Summary of the Invention

[0004] In response to the above-mentioned deficiencies in the prior art, the present invention proposes an enhanced mixing and granulating integrated machine and an enhanced mixing and granulating method thereof. Based on the existing cylindrical mixer / granulator, the present invention adds a rotating paddle shaft inside the cylinder. The upstream section of the paddle shaft is equipped with mixing and stirring blades to mix the raw materials, and the downstream section of the paddle shaft is equipped with spiral granulating blades to granulate the mixed materials. This transforms the traditional passive mixer / granulator into an enhanced mixing and granulating integrated machine with active and passive coupling. This improves the mixing and granulating effect and efficiency on the one hand, and reduces the energy consumption of the mixing and granulating system and reduces the floor space on the other.

[0005] According to a first embodiment of the present invention, an enhanced mixing and granulating integrated machine is provided.

[0006] A reinforced mixing and granulating all-in-one machine, comprising a cylinder, a paddle shaft, a support system, a cylinder drive system, and a paddle shaft drive system. The cylinder is arranged horizontally and tilted on the support system, and a feed port and a discharge port are provided at both ends of the cylinder, respectively. The feed port is arranged higher than the discharge port. The paddle shaft is arranged in the cylinder and passes through both ends of the cylinder. The cylinder drive system is arranged at the bottom outside the cylinder and is used to drive the cylinder to rotate. The paddle shaft drive system is arranged outside the cylinder and is connected to the paddle shaft and is used to drive the paddle shaft to rotate. Along the direction of material movement, the paddle shaft is provided with mixing and stirring blades in the upstream section inside the cylinder, and with spiral granulation blades in the downstream section inside the cylinder.

[0007] In the present invention, the mixing and stirring blades are strip-shaped blades, and the spiral granulating blades are spiral surface blades.

[0008] In the present invention, the impeller shaft is provided with n layers of mixing blades at the upstream section along the direction of material flow. Each layer of mixing blades comprises a plurality of strip-shaped blades evenly and symmetrically distributed around the circumference of the same cross-section of the impeller shaft. Here, n is 2 to 30.

[0009] In the present invention, the strip-shaped blades of any two adjacent layers of mixing and stirring blades are arranged in a staggered manner, that is, the projections of the strip-shaped blades of any two adjacent layers of mixing and stirring blades in the direction of the cylinder axis do not overlap.

[0010] Preferably, each layer of mixing and stirring blades is composed of two strip-shaped blades symmetrically distributed on the circumference of the same cross section of the paddle shaft, and the strip-shaped blades of any three consecutive layers of mixing and stirring blades are arranged in a 60° staggered manner in the axial direction of the cylinder.

[0011] In the present invention, the material-facing surface of the strip-shaped sheet blades of the mixing and stirring blades is a wedge-shaped material-facing surface.

[0012] In the present invention, the angle between the material-contacting surface of the spiral blade of the spiral granulating blade and the horizontal plane is 0 to 90°, preferably 30 to 60°.

[0013] In the present invention, the device also includes a dripping water supply system disposed within the barrel. The dripping water supply system includes a dripping water pipe, multiple dripping nozzles, and a dripping regulating valve. The dripping water pipe extends from one end of the barrel into the barrel. The multiple dripping nozzles are evenly distributed on the dripping water pipe and located above the mixing and stirring blades. The dripping regulating valve is disposed on the dripping water pipe and is located outside the barrel.

[0014] In the present invention, the device also includes an atomizing water supply system disposed within the barrel. The atomizing water supply system comprises an atomizing water pipe, multiple atomizing nozzles, and an atomizing regulating valve. The atomizing water pipe extends from one end of the barrel into the barrel. Multiple atomizing nozzles are evenly distributed on the atomizing water pipe and positioned above the spiral granulating blades. The atomizing regulating valve is disposed on the atomizing water pipe and located outside the barrel.

[0015] In the present invention, the rotation direction of the cylinder is opposite to the rotation direction of the propeller shaft.

[0016] In the present invention, the all-in-one machine further comprises a material particle size detection device arranged at the discharge port of the cylinder.

[0017] In the present invention, the rotation speed of the cylinder is less than Preferably Where: R is the radius of the cylinder, g is the acceleration due to gravity.

[0018] In the present invention, the inclination angle of the cylinder is 1 to 10°, preferably 1 to 5°.

[0019] According to a second embodiment of the present invention, a method for enhanced mixing and granulation is provided.

[0020] A method for enhanced mixing and granulation or a method for enhanced mixing and granulation using the enhanced mixing and granulation integrated machine according to the first embodiment, the method comprising the following steps:

[0021] 1) The material to be mixed enters the cylinder through the feed port at the higher end of the cylinder. The material rotates with the cylinder and moves toward the lower feed port.

[0022] 2) The material first enters the mixing blade area. The strip-shaped blades of the mixing blade rotate with the paddle shaft. During the rotation process, the mixing blade quickly cuts the material and drives the material to be ejected along the material discharge direction under the action of the wedge-shaped material surface. The mixing blade and the rotating cylinder work together to arouse violent cutting, convection and diffusion mixing of the material, achieving efficient and strong mixing of the material to obtain a mixed material.

[0023] 3) The mixed material then enters the spiral granulation blade area, and the spiral blade of the spiral granulation blade rotates with the blade shaft. During the rotation process, the spiral granulation blade collides with the mixed material, generating an axial force F1 and a radial force F2 from the discharge port to the feed port. The mixed material rolls in three dimensions under the combined action of the radial force F2 and the rotating cylinder. During the rolling process, the mixed material continuously adheres to the fine particles on the path and quickly grows into balls. Under the action of the axial force F1, the rolling granulation time of the mixed material is extended, and the granulated material after the granulation process is finally discharged from the discharge port.

[0024] In the present invention, a material particle size detection device is provided at the discharge port of the cylinder, and the particle size detection device detects the particle size of the granulated material discharged from the discharge port as d0, mm. The initial speed of the paddle shaft is set to Z0, r / min. According to the process conditions, the average particle size range of the granulated material is set to [d min , d max ], mm. Determine whether d0 is within the set particle size range [d min , d max ], adjust the real-time speed Z1 of the propeller shaft, r / min. The specific steps are:

[0025] When d0>150%d max hour,

[0026] When 130% d max <d0≤150%d max hour,

[0027] When d max <d0≤130%d max hour,

[0028] When d min ≤d0≤d max When Z1=Z0.

[0029] When 80% d min <d0<d min hour,

[0030] When 50% d min <d0≤80%d min hour,

[0031] When d0≤50%d min hour,

[0032] Among them: k1, k2, k3, k4, k5, k6 are the propeller shaft speed adjustment coefficients, the value range of k1 is 0.65-0.9, the value range of k2 is 0.35-0.65, the value range of k3 is 0.1-0.35, the value range of k4 is 0.15-0.5, the value range of k5 is 0.5-0.9, and the value range of k6 is 0.9-1.2. Set the particle size range [d min , d max ] is taken as [3, 8] mm.

[0033] Detect the size of d0 in real time and adjust the real-time speed of the paddle shaft to Z1, so that the particle size of the granulated material discharged from the discharge port is d0∈[d min, d max ].

[0034] In order to solve the problems in the prior art of sintering mixing and granulation using a cylindrical mixer / granulator for passive mixing and granulation, resulting in poor mixing and granulation effect and low efficiency of the materials, high energy consumption of the existing mixing and granulation system, and large equipment footprint, the present invention proposes an enhanced mixing and granulation integrated machine. Based on the existing cylindrical mixer / granulator, the present invention adds a rotating paddle shaft inside the cylinder, and the upstream section of the paddle shaft is equipped with a mixing and stirring blade to mix the raw materials, and the downstream section of the paddle shaft is equipped with a spiral granulation blade to granulate the mixed materials, thereby transforming the traditional passive mixer / granulator into an enhanced mixing and granulation integrated machine with active and passive coupling, which improves the mixing and granulation effect and efficiency on the one hand, and reduces the energy consumption of the mixing and granulation system and reduces the footprint on the other hand.

[0035] In the present invention, the enhanced mixing and granulating integrated machine includes a cylinder, a paddle shaft, a support system, a cylinder drive system, and a paddle shaft drive system. The cylinder is arranged horizontally and tilted on the support system. Generally speaking, the inclination angle of the cylinder is 1 to 10 degrees, preferably 1 to 5 degrees (for example, 3 degrees). Among them, a feed port is provided at the higher end of the cylinder, and a discharge port is provided at the lower end of the cylinder. A cylinder drive system is provided at the bottom outside the cylinder, and the cylinder drive system is used to drive the cylinder to rotate. The paddle shaft is arranged in the cylinder and passes through both ends of the cylinder, one end of which is connected to the paddle shaft drive system arranged outside the cylinder, and the paddle shaft drive system is used to drive the paddle shaft to rotate. Along the direction of material movement (i.e., the direction from the feed port to the discharge port), the paddle shaft is provided with a mixing and stirring blade in the upstream section inside the cylinder, and a spiral granulation blade is provided in the downstream section inside the cylinder.

[0036] Specifically, the mixing and stirring blade is a strip-shaped sheet-like structure blade, and the material-facing surface of the strip-shaped sheet-like blade is a wedge-shaped material-facing surface. The spiral granulating blade is a spiral surface structure blade. The mixing and stirring blade and the spiral granulating blade rotate together with the paddle shaft. During the rotation, the strip-shaped sheet-like blade of the mixing and stirring blade quickly cuts the material and drives the material to be ejected along the material discharge direction under the action of the wedge-shaped material-facing surface. On the one hand, it works together with the rotating cylinder to arouse violent cutting, convection and diffusion mixing of the material, realizing efficient and powerful mixing of the material. On the other hand, it helps push the material to flow toward the lower feed port to prevent blockage. Subsequently, the spiral granulating blade impacts and collides with the mixed material entering the spiral granulating blade area, causing the material to generate an axial force F1 and a radial force F2, such as Figure 4As shown. The axial force F1 points from the discharge port to the feed port, which, on the one hand, causes the material to roll in three-dimensional space under the combined action of the radial force F2 and the rotating cylinder, so that the material can continuously adhere to the fine particles on the path during the rolling process and quickly grow into balls, thereby enhancing the granulation effect. On the other hand, it can extend the granulation time of the system and further improve the granulation effect. Therefore, in the present application, the mixing and stirring blades in the upstream section of the paddle shaft mainly play the role of vigorously mixing the materials, while the spiral granulation blades in the downstream section of the paddle shaft mainly play the role of efficiently granulating the mixed materials. In other words, the present application combines mixing and granulation into one, and only one enhanced mixing and granulation all-in-one machine is needed, which can replace the two devices in the two-stage mixing granulation of the existing sintering process, thereby saving space, reducing the energy consumption of the mixing and granulation system, and improving the mixing and granulation effect and efficiency.

[0037] In order to further enhance the mixing effect of the mixing and stirring blades on the material in the present invention, this application sets n layers of mixing and stirring blades in the upstream section of the paddle shaft along the direction of material movement. Each layer of mixing and stirring blades is composed of a plurality of strip-shaped blades evenly and symmetrically distributed on the circumference of the same cross section of the paddle shaft. Among them, the number of layers n of the mixing and stirring blades is not limited and can be adjusted according to the scale of the entire system, that is, the material processing capacity. For example, the value of n is 2 to 30. The uniform distribution of the mixing and stirring blades in layers can extend the mixing time of the material and improve the dispersion of the material, thereby making the mixing of the components in the material more uniform and the mixing effect better, effectively assisting the next stage of material granulation.

[0038] As a preferred embodiment, in the multi-layer mixing blades of the present application, the strip-shaped blades of any two adjacent layers of mixing blades are arranged in a staggered manner, that is, the projections of the strip-shaped blades of the two adjacent layers of mixing blades in the direction of the cylinder axis do not overlap. Further preferably, as Figure 2 and Figure 4 As shown, each layer of mixing blades consists of two strip-shaped blades symmetrically distributed on the circumference of the same cross-section of the paddle shaft, and the strip-shaped blades of any three consecutive layers of mixing blades are arranged in a 60-degree staggered pattern along the axis of the cylinder. The further uniform staggered arrangement of the strip-shaped blades of the mixing blades results in a more intense impact and collision between the material, the cylinder, and the mixing blades, under the conditions of combining passive mixing of the rotating cylinder with active mixing of the mixing blades on the paddle shaft, thereby achieving more efficient mixing.

[0039] In order to better achieve the coupling between the passive mixing and granulation of the material by the cylinder and the active mixing and granulation of the material by the paddle shaft, maximize the joint action of the rotating cylinder and the rotating paddle shaft, and further improve the mixing and granulation effect and efficiency of the material, the rotation directions of the cylinder and the paddle shaft are set to be opposite in this application. Among them, the rotation speed of the cylinder and the paddle shaft can be adjusted according to the actual working conditions. The setting length L1 of the mixing and stirring blade on the paddle shaft and the setting length L2 of the spiral granulation blade can be set according to the physical properties of the material, the particle size requirements of the granulated material after granulation, etc. The angle between the material-facing surface of the spiral blade of the spiral granulation blade and the horizontal plane can also be set as needed. Generally speaking, the greater the material processing capacity of the system, the greater the inclination angle of the spiral granulation blade. In this application, the angle between the material-facing surface of the spiral blade of the spiral granulation blade and the horizontal plane is 0 to 90°, preferably 30 to 60°. It should be noted that in order to make the cylinder have a certain mixing and granulating effect, the material in the cylinder cannot rotate with the cylinder without leaving the cylinder, so the cylinder speed must be less than the critical speed. (The critical speed refers to the cylinder speed when the centrifugal force of the material rotating with the cylinder is equal to the material gravity). Where: R is the radius of the cylinder, g is the acceleration due to gravity. The speed of the paddle shaft can be adjusted in real time according to the granulation effect of the granulated material discharged from the discharge port.

[0040] The mixing and granulation of the sintered material requires the addition of water, so the enhanced mixing and granulation integrated machine described in the present invention also includes a dripping water adding system and an atomized water adding system arranged in the cylinder. Among them, the dripping water adding system is arranged above the mixing and stirring blade area in the cylinder to provide the required amount of water for the mixing of the material. The atomized water adding system is arranged above the spiral granulation blade area in the cylinder to provide the required atomized water for the growth of the material. The dripping water adding system and the atomized water adding system respectively include their own water pipes, nozzles and regulating valves. Generally speaking, more than 70% of the water in this application is added in the mixing and stirring blade area, and accordingly, the atomized water flow in the spiral granulation blade area generally accounts for 10% to 30% of the total water flow of the system. The specific flow rates of dripping water and atomized water can be adjusted according to the granulation effect. It is worth noting that the present application adds a paddle shaft in the cylinder and sets a mixing and stirring blade and a spiral granulation blade on the paddle shaft at the same time. While improving the mixing and granulation effect of the material, it also improves the dispersion of the added water in the material, making the material easier to agglomerate into granules. Conversely, the setting of dripping and atomized water also further assists the mixing and granulation of the raw materials, making the mixing and granulation effect and efficiency better.

[0041] Based on the above-mentioned enhanced mixing and granulating integrated machine, the present invention proposes an enhanced mixing and granulating method. In this method, the material to be mixed (for example, sintered ingredients prepared in a batching bin) enters the barrel through the feed port at the higher end of the barrel, and the material rotates with the barrel. The rotation of the barrel drives the material to rise along the wall of the barrel. After rising to a certain height, the material slides down relatively along the surface of the barrel and moves toward the lower feed port. While the barrel rotates, the paddle shaft arranged in the barrel drives the mixing and stirring blades and the spiral granulating blades to rotate at a certain speed under the action of the paddle shaft drive system. The downward-flowing material first enters the mixing and stirring blade area, and the material is vigorously mixed under the joint action of dripping water, the barrel and the mixing and stirring blades, so that the components in the material are evenly mixed to obtain a mixed material. The mixed material then enters the spiral granulating blade area. Under the joint action of atomized water, cylinder and spiral granulating blades, the mixed material continuously adheres to fine particles during the rolling process and rapidly nucleates and grows. After completing the granulation process, the granulated material is discharged from the discharge port and sent to the sintering machine through a belt.

[0042] In the above method, the present invention also detects the particle size d0 of the granulated material discharged from the discharge port by a material particle size detection device, and compares d0 with the particle size range of the granulated material set according to actual production needs [d min , d max ] is compared, so as to feedback and adjust the speed of the paddle shaft in the cylinder to control the particle size of the granulated material to meet the production requirements. During the working process, the initial speed of the paddle shaft is set to Z0, r / min.

[0043] When d0>d max When , reduce the shaft speed until d0∈[dmin, dmax];

[0044] When d min ≤d0≤d max When , the current state is maintained unchanged, that is, the initial speed of the propeller shaft is kept unchanged;

[0045] When d0<d min When , increase the speed of the propeller shaft until d0∈[dmin, dmax].

[0046] Compared with the prior art, the present invention has the following beneficial technical effects:

[0047] 1. Based on the existing cylindrical mixer / granulator, the present invention adds a rotating paddle shaft inside the cylinder, and the upstream section of the paddle shaft is equipped with a mixing and stirring blade to mix the raw materials, and the downstream section of the paddle shaft is equipped with a spiral granulating blade to granulate the mixed materials, thereby transforming the traditional passive mixer / granulator into an active and passive coupled enhanced mixing and granulating integrated machine, which improves the granulation effect and efficiency on the one hand, and reduces the energy consumption of the mixing and granulating system and reduces the floor space on the other hand.

[0048] 2. The present invention provides both mixing blades and spiral granulating blades on the paddle shaft. The mixing blades with strip-shaped sheet-like structure work together with the rotating cylinder to arouse violent cutting, convection and diffusion mixing of the materials, thereby achieving efficient mixing of the materials and preventing material blockage; the spiral granulating blades with spiral surface structure work together with the rotating cylinder to extend the granulation time and enhance the granulation effect, while allowing the mixed materials to continuously adhere to fine particles and quickly grow into balls, further improving the granulation effect and efficiency.

[0049] 3. According to the different water requirements of the mixing and stirring blade area and the spiral granulating blade area, the present invention is respectively provided with a dripping water adding system and an atomizing water adding system. While improving the mixing and granulating effect of the material, it also improves the dispersion of the added water in the material, making the material easier to agglomerate into granules, further assisting the granulation of the raw materials, and making the granulation effect and efficiency better.

[0050] 4. The present invention detects the particle size of the granulated material discharged from the discharge port of the cylinder, thereby performing real-time feedback adjustment on the rotation speed of the paddle shaft, controlling the particle size of the granulated material to meet production requirements, while reducing system energy consumption, which is in line with the development trend of green and low-consumption sintering technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 This is a structural schematic diagram of an enhanced mixing and granulating integrated machine of the present invention;

[0052] Figure 2 for Figure 1 Cross-sectional view at the AA position;

[0053] Figure 3 for Figure 1 Cross-sectional view of the middle BB position;

[0054] Figure 4 Schematic diagram of the structure of the mixing and stirring blades and the spiral granulating blades on the paddle shaft of the present invention;

[0055] Figure 5 Schematic diagram of the material-facing surface of the mixing and stirring blade in the present invention;

[0056] Figure 6 It is a schematic diagram of the installation position of the mixing and stirring blades in the present invention.

[0057] Reference numerals:

[0058] 1: Cylinder; 101: Feeding port; 102: Discharging port; 2: Paddle shaft; 201: Mixing and stirring blade; 20101: Material-facing surface of strip-shaped blade; 202: Spiral granulating blade; 3: Support system; 4: Cylinder drive system; 5: Paddle shaft drive system; 6: Drip water supply system; 601: Drip water pipe; 602: Drip nozzle; 603: Drip regulating valve; 7: Atomizing water supply system; 701: Atomizing water pipe; 702: Atomizing nozzle; 703: Atomizing regulating valve; 8: Material particle size detection device. DETAILED DESCRIPTION

[0059] The technical solutions of the present invention are illustrated below with examples, and the scope of protection requested by the present invention includes but is not limited to the following embodiments.

[0060] According to a first embodiment of the present invention, an enhanced mixing and granulating integrated machine is provided.

[0061] A reinforced mixing and granulating all-in-one machine, comprising a cylinder 1, a paddle shaft 2, a support system 3, a cylinder drive system 4, and a paddle shaft drive system 5. The cylinder 1 is arranged horizontally and tilted on the support system 3, and a feed port 101 and a discharge port 102 are provided at both ends of the cylinder 1, respectively. The feed port 101 is arranged higher than the discharge port 102. The paddle shaft 2 is arranged inside the cylinder 1 and passes through both ends of the cylinder 1. The cylinder drive system 4 is arranged at the bottom outside the cylinder 1, and is used to drive the cylinder 1 to rotate. The paddle shaft drive system 5 is arranged outside the cylinder 1 and is connected to the paddle shaft 2, and is used to drive the paddle shaft 2 to rotate. Along the direction of material movement, the paddle shaft 2 is provided with a mixing and stirring blade 201 in the upstream section inside the cylinder 1, and a spiral granulating blade 202 in the downstream section inside the cylinder 1.

[0062] In the present invention, the mixing and stirring blade 201 is a strip-shaped blade, and the spiral granulating blade 202 is a helicoidal blade.

[0063] In the present invention, along the direction of material flow, the impeller shaft 2 is provided with n layers of mixing blades 201 at the upstream section. Each layer of mixing blades 201 is composed of multiple strip-shaped blades evenly and symmetrically distributed on the circumference of the same cross section of the impeller shaft 2. Where n is 2 to 30.

[0064] In the present invention, the strip-shaped blades of any two adjacent layers of mixing and stirring blades 201 are arranged in a staggered manner, that is, the projections of the strip-shaped blades of any two adjacent layers of mixing and stirring blades 201 in the axial direction of the cylinder 1 do not overlap.

[0065] Preferably, each layer of mixing and stirring blades 201 is composed of two strip-shaped blades symmetrically distributed on the circumference of the same cross section of the impeller shaft 2, and the strip-shaped blades of any three consecutive layers of mixing and stirring blades 201 are arranged in a 60° staggered manner in the axial direction of the cylinder 1.

[0066] In the present invention, the material-facing surface 20101 of the strip-shaped sheet blade of the mixing and stirring blade 201 is a wedge-shaped material-facing surface.

[0067] In the present invention, the angle between the material-contacting surface of the spiral blade 202 and the horizontal plane is 0 to 90°, preferably 30 to 60°.

[0068] In the present invention, the device also includes a dripping water supply system 6 disposed within the barrel 1. The dripping water supply system 6 includes a dripping water pipe 601, multiple dripping nozzles 602, and a dripping regulating valve 603. The dripping water pipe 601 extends from one end of the barrel 1 into the interior of the barrel 1. The multiple dripping nozzles 602 are evenly distributed on the dripping water pipe 601 and are located above the mixing and stirring blades 201. The dripping regulating valve 603 is disposed on the dripping water pipe 601 and is located outside the barrel 1.

[0069] In the present invention, the device also includes an atomizing water supply system 7 disposed within the barrel 1. The atomizing water supply system 7 comprises an atomizing water pipe 701, multiple atomizing nozzles 702, and an atomizing regulating valve 703. The atomizing water pipe 701 extends from one end of the barrel 1 into the barrel 1. Multiple atomizing nozzles 702 are evenly distributed on the atomizing water pipe 701 and positioned above the spiral granulating blades 202. The atomizing regulating valve 703 is disposed on the atomizing water pipe 701 and located outside the barrel 1.

[0070] In the present invention, the rotation direction of the cylinder 1 is opposite to the rotation direction of the propeller shaft 2 .

[0071] In the present invention, the all-in-one machine further comprises a material particle size detection device 8 provided at the discharge port 102 of the cylinder 1 .

[0072] In the present invention, the rotation speed of the cylinder 1 is less than Preferably Where: R is the radius of the cylinder, g is the acceleration due to gravity.

[0073] In the present invention, the inclination angle of the cylinder 1 is 1 to 10°, preferably 1 to 5°.

[0074] Example 1

[0075] like Figure 1As shown, an enhanced mixing and granulating all-in-one machine includes a cylinder 1, a paddle shaft 2, a support system 3, a cylinder drive system 4, and a paddle shaft drive system 5. The cylinder 1 is arranged horizontally and tilted on the support system 3, and a feed port 101 and a discharge port 102 are provided at both ends of the cylinder 1. The feed port 101 is arranged higher than the discharge port 102. The paddle shaft 2 is arranged in the cylinder 1 and passes through both ends of the cylinder 1. The cylinder drive system 4 is arranged at the bottom outside the cylinder 1, and is used to drive the cylinder 1 to rotate. The paddle shaft drive system 5 is arranged outside the cylinder 1 and is connected to the paddle shaft 2, and is used to drive the paddle shaft 2 to rotate. Along the direction of material running, the paddle shaft 2 is provided with a mixing and stirring blade 201 in the upstream section inside the cylinder 1, and a spiral granulating blade 202 is provided in the downstream section inside the cylinder 1.

[0076] Example 2

[0077] like Figure 2-4 As shown, Example 1 is repeated, except that the mixing and stirring blade 201 is a strip-shaped blade and the spiral granulating blade 202 is a helicoidal blade.

[0078] Example 3

[0079] Repeat Example 2, except that along the material running direction, the paddle shaft 2 is provided with 15 layers of mixing blades 201 at the upstream section. Each layer of mixing blades 201 is composed of multiple strip-shaped blades evenly and symmetrically distributed on the circumference of the same cross section of the paddle shaft 2.

[0080] Example 4

[0081] Repeat Example 3, except that the impeller shaft 2 is provided with 9 layers of mixing blades 201 at the upstream section along the direction of material flow.

[0082] Example 5

[0083] Example 3 is repeated, except that the paddle shaft 2 is provided with 18 layers of mixing blades 201 at the upstream section along the direction of material flow.

[0084] Example 6

[0085] Example 3 is repeated, except that the strip-shaped blades of any two adjacent layers of mixing and stirring blades 201 are arranged in a staggered manner, that is, the projections of the strip-shaped blades of any two adjacent layers of mixing and stirring blades 201 in the axial direction of the cylinder 1 do not overlap.

[0086] Example 7

[0087] Repeat Example 6, except that each layer of mixing and stirring blades 201 is composed of two strip-shaped sheet blades symmetrically distributed on the circumference of the same cross section of the impeller shaft 2, and the strip-shaped sheet blades of any three consecutive layers of mixing and stirring blades 201 are arranged in a 60° staggered manner in the axial direction of the cylinder 1.

[0088] Example 8

[0089] like Figure 5 As shown, Example 7 is repeated, except that the material-facing surface 20101 of the strip-shaped sheet blade of the mixing and stirring blade 201 is a wedge-shaped material-facing surface.

[0090] Example 9

[0091] Example 8 was repeated, except that the angle between the material-impacting surface of the spiral blade 202 and the horizontal plane was 45°.

[0092] Example 10

[0093] Example 8 was repeated, except that the angle between the material-impacting surface of the spiral blade 202 and the horizontal plane was 60°.

[0094] Example 11

[0095] Example 8 was repeated, except that the angle between the material-impacting surface of the spiral blade 202 and the horizontal plane was 30°.

[0096] Example 12

[0097] Example 9 is repeated, except that the device further includes a dripping water supply system 6 disposed within the barrel 1. The dripping water supply system 6 includes a dripping water pipe 601, multiple dripping nozzles 602, and a dripping regulating valve 603. The dripping water pipe 601 extends from one end of the barrel 1 into the interior of the barrel 1. The multiple dripping nozzles 602 are evenly distributed on the dripping water pipe 601 and are located above the mixing and stirring blades 201. The dripping regulating valve 603 is disposed on the dripping water pipe 601 and is located outside the barrel 1.

[0098] The device also includes an atomizing water supply system 7 disposed within the barrel 1. The atomizing water supply system 7 comprises an atomizing water pipe 701, multiple atomizing nozzles 702, and an atomizing regulating valve 703. The atomizing water pipe 701 extends from one end of the barrel 1 into the barrel 1. Multiple atomizing nozzles 702 are evenly distributed along the atomizing water pipe 701 and positioned above the spiral granulating blades 202. The atomizing regulating valve 703 is disposed on the atomizing water pipe 701 and located outside the barrel 1.

[0099] Example 13

[0100] Repeat Example 12, except that the rotation direction of the cylinder 1 is opposite to the rotation direction of the propeller shaft 2.

[0101] Example 14

[0102] Example 13 is repeated, except that the all-in-one machine further includes a material particle size detection device 8 arranged at the discharge port 102 of the cylinder 1.

[0103] Example 15

[0104] Repeat Example 14, except that the rotation speed of cylinder 1 is Where: R is the radius of the cylinder, g is the acceleration due to gravity.

[0105] Example 16

[0106] Example 15 was repeated except that the inclination angle of the cylinder 1 was 3°.

[0107] Example 17

[0108] A method for enhancing mixing and granulation, using the enhanced mixing and granulation integrated machine of Example 16, the method comprising the following steps:

[0109] 1) The material to be mixed enters the cylinder 1 through the feed port 101 at the higher end of the cylinder 1. The material rotates with the cylinder 1 and moves toward the lower feed port 102.

[0110] 2) The material first enters the area of ​​the mixing and stirring blade 201. The strip-shaped blades of the mixing and stirring blade 201 rotate together with the paddle shaft 2. During the rotation process, the mixing and stirring blade 201 quickly cuts the material and drives the material to be ejected along the material discharge direction under the action of the wedge-shaped material surface. The mixing and stirring blade 201 and the rotating cylinder 1 work together to arouse violent cutting, convection and diffusion mixing of the material, thereby achieving efficient and strong mixing of the material to obtain a mixed material.

[0111] 3) The mixed material then enters the area of ​​the spiral granulating blade 202. The spiral blade of the spiral granulating blade 202 rotates with the blade shaft 2. During the rotation, the spiral granulating blade 202 collides with the mixed material, generating an axial force F1 and a radial force F2 pointing from the discharge port 102 to the feed port 101. The mixed material rolls in three-dimensional space under the combined action of the radial force F2 and the rotating cylinder 1. During the rolling process, the mixed material continuously adheres to the fine particles on the path and quickly grows into balls. Under the action of the axial force F1, the rolling granulation time of the mixed material is extended, and the granulated material after the granulation process is finally discharged from the discharge port 102.

[0112] Example 18

[0113] Repeat Example 17, except that a material particle size detection device 8 is provided at the discharge port 102 of the cylinder 1. The material particle size detection device 8 detects the particle size of the granulated material discharged from the discharge port 102 as d0, mm. The initial speed of the paddle shaft 2 is set to Z0, r / min. According to the process conditions, the average particle size range of the granulated material is set to [d min , d max ], mm. Determine whether d0 is within the set particle size range [dmin , d max ], adjust the real-time speed Z1 of the propeller shaft 2, r / min. The specific steps are:

[0114] When d0>150%d max hour,

[0115] When 130% d max <d0≤150%d max hour,

[0116] When d max <d0≤130%d max hour,

[0117] When d min ≤d0≤d max When Z1=Z0.

[0118] When 80% d min <d0<d min hour,

[0119] When 50% d min <d0≤80%d min hour,

[0120] When d0≤50%d min hour,

[0121] Among them: k1, k2, k3, k4, k5, k6 are the propeller shaft speed adjustment coefficients, the value range of k1 is 0.65-0.9, the value range of k2 is 0.35-0.65, the value range of k3 is 0.1-0.35, the value range of k4 is 0.15-0.5, the value range of k5 is 0.5-0.9, and the value range of k6 is 0.9-1.2. Set the particle size range [d min , d max ] is taken as [3, 8] mm.

[0122] The size of d0 is detected in real time, and the real-time rotation speed of the paddle shaft 2 is adjusted to Z1, so that the particle size d0∈[d min , d max ].

[0123] Application Example 1

[0124] The method described in Example 18 was used for sintering, mixing and granulating. A material particle size detection device 8 was installed at the discharge port 102 of the cylinder 1. The material particle size detection device 8 detected the particle size d0 = 5 mm of the granulated material discharged from the discharge port 102. The initial rotation speed Z0 of the paddle shaft 2 was set to 300 r / min. The average particle size range of the granulated material [d min , d max ] is [3, 8], mm. Determine whether d0 is within the set particle size range [d min , d max ], adjust the real-time speed Z1 of the propeller shaft 2, r / min.

[0125] Due to d min ≤d0≤d max When Z1=Z0, the paddle shaft 2 keeps the speed of 300r / min, and the sintering ingredients are mixed and granulated in the cylinder 1, ensuring that the particle size d0∈[d min , d max ].

[0126] Application Example 2

[0127] The method described in Example 18 was used for sintering, mixing and granulating. A material particle size detection device 8 was installed at the discharge port 102 of the cylinder 1. The material particle size detection device 8 detected the particle size d0 = 14 mm of the granulated material discharged from the discharge port 102. The initial rotation speed Z0 of the paddle shaft 2 was set to 300 r / min. The average particle size range of the granulated material [d min , d max ] is [3, 8], mm. Determine whether d0 is within the set particle size range [d min , d max ], adjust the real-time speed Z1 of the propeller shaft 2 in r / min. The value of k1 is 0.8.

[0128] Since d0>150%d max hour, The real-time rotation speed of the paddle shaft 2 is adjusted to 120 r / min so that the particle size d0∈[d min , d max ].

[0129] Application Example 3

[0130] The method described in Example 18 was used for sintering, mixing and granulating. A material particle size detection device 8 was installed at the discharge port 102 of the cylinder 1. The material particle size detection device 8 detected the particle size d0 = 11 mm of the granulated material discharged from the discharge port 102. The initial rotation speed Z0 of the paddle shaft 2 was set to 300 r / min. The average particle size range of the granulated material [d min , d max ] is [3, 8], mm. Determine whether d0 is within the set particle size range [d min , d max ], adjust the real-time speed Z1 of the propeller shaft 2 in r / min. The value of k2 is 0.5.

[0131] Since 130%d max <d0≤150%d max hour, The real-time rotation speed of the paddle shaft 2 is adjusted to 243.75 r / min, so that the particle size d0∈[d min , d max ].

[0132] Application Example 4

[0133] The method described in Example 18 was used for sintering, mixing and granulating. A material particle size detection device 8 was installed at the discharge port 102 of the cylinder 1. The material particle size detection device 8 detected the particle size d0 = 10 mm of the granulated material discharged from the discharge port 102. The initial rotation speed Z0 of the paddle shaft 2 was set to 300 r / min. The average particle size range of the granulated material [d min , d max ] is [3, 8], mm. Determine whether d0 is within the set particle size range [d min , d max ], adjust the real-time speed Z1 of the propeller shaft 2 in r / min. The value of k3 is 0.2.

[0134] Due to d max <d0≤130%d max hour, The real-time rotation speed of the paddle shaft 2 is adjusted to 285 r / min, so that the particle size d0∈[d min , d max ].

[0135] Application Example 5

[0136] The method described in Example 18 was used for sintering, mixing and granulating. A material particle size detection device 8 was installed at the discharge port 102 of the cylinder 1. The material particle size detection device 8 detected the particle size d0 = 2.6 mm of the granulated material discharged from the discharge port 102. The initial rotation speed Z0 of the paddle shaft 2 was set to 300 r / min. The average particle size range of the granulated material [d min , d max ] is [3, 8], mm. Determine whether d0 is within the set particle size range [d min , d max ], adjust the real-time speed Z1 of the propeller shaft 2 in r / min. The value of k4 is 0.3.

[0137] Since 80% d min <d0<d min hour, The real-time rotation speed of the paddle shaft 2 is adjusted to 312 r / min, so that the particle size d0∈[d min , d max ].

[0138] Application Example 6

[0139] The method described in Example 18 was used for sintering, mixing and granulating. A material particle size detection device 8 was installed at the discharge port 102 of the cylinder 1. The material particle size detection device 8 detected the particle size d0 = 2 mm of the granulated material discharged from the discharge port 102. The initial rotation speed Z0 of the paddle shaft 2 was set to 300 r / min. The average particle size range of the granulated material [d min , d max ] is [3, 8], mm. Determine whether d0 is within the set particle size range [d min , d max ], adjust the real-time speed Z1 of the propeller shaft 2 in r / min. The value of k5 is 0.7.

[0140] Since 50% d min <d0≤80%d min hour, The real-time rotation speed of the paddle shaft 2 is adjusted to 370 r / min, so that the particle size d0∈[d min , d max ].

[0141] Application Example 7

[0142] The method described in Example 18 was used for sintering, mixing and granulating. A material particle size detection device 8 was installed at the discharge port 102 of the cylinder 1. The material particle size detection device 8 detected the particle size d0 = 1 mm of the granulated material discharged from the discharge port 102. The initial rotation speed Z0 of the paddle shaft 2 was set to 300 r / min. The average particle size range of the granulated material [d min , d max ] is [3, 8], mm. Determine whether d0 is within the set particle size range [d min , d max ], adjust the real-time speed Z1 of the propeller shaft 2 in r / min. The value of k6 is 1.0.

[0143] Since d0≤50%d min hour, The real-time rotation speed of the paddle shaft 2 is adjusted to 500 r / min, so that the particle size d0∈[d min , d max ].

Claims

1. An enhanced mixing and granulating integrated machine, characterized by: The integrated machine comprises a cylinder (1), a paddle shaft (2), a support system (3), a cylinder drive system (4), and a paddle shaft drive system (5); the cylinder (1) is arranged horizontally and tilted on the support system (3), and a feed port (101) and a discharge port (102) are respectively provided at both ends of the cylinder (1); wherein the feed port (101) is arranged higher than the discharge port (102); the paddle shaft (2) is arranged in the cylinder (1) and passes through both ends of the cylinder (1); the cylinder drive system (4) is arranged at the bottom outside the cylinder (1), The invention is used to drive the cylinder (1) to rotate; the paddle shaft driving system (5) is arranged outside the cylinder (1) and connected to the paddle shaft (2) to drive the paddle shaft (2) to rotate; along the direction of material movement, the paddle shaft (2) is provided with a mixing and stirring blade (201) at the upstream section inside the cylinder (1), and a spiral granulating blade (202) at the downstream section inside the cylinder (1); by detecting the particle size of the granulated material discharged from the cylinder discharge port, the rotation speed of the paddle shaft is adjusted in real time by feedback, and the particle size of the granulated material is controlled to meet production requirements.

2. The intensified mixing and granulating integrated machine according to claim 1, characterized in that: The mixing and stirring blade (201) is a strip-shaped blade; the spiral granulating blade (202) is a spiral surface blade.

3. The intensified mixing and granulating integrated machine according to claim 2, characterized in that: Along the direction of material flow, the paddle shaft (2) is provided with n layers of mixing and stirring blades (201) at the upstream section; each layer of mixing and stirring blades (201) is composed of a plurality of strip-shaped blades evenly and symmetrically distributed on the circumference of the same cross section of the paddle shaft (2); wherein n is 2 to 30.

4. The intensified mixing and granulating integrated machine according to claim 2 or 3, characterized in that: The strip-shaped blades of any two adjacent layers of mixing and stirring blades (201) are arranged in a staggered manner, that is, the projections of the strip-shaped blades of the two adjacent layers of mixing and stirring blades (201) in the axial direction of the cylinder (1) do not overlap.

5. The enhanced mixing and granulating integrated machine according to claim 4, characterized in that: Each layer of mixing and stirring blades (201) is composed of two strip-shaped blades symmetrically distributed on the circumference of the same cross section of the blade shaft (2), and the strip-shaped blades of any three consecutive layers of mixing and stirring blades (201) are arranged in a 60° staggered manner in the axial direction of the cylinder (1).

6. The intensified mixing and granulating integrated machine according to any one of claims 2-3 and 5, characterized in that: The material-facing surface (20101) of the strip-shaped sheet blade of the mixing and stirring blade (201) is a wedge-shaped material-facing surface; and / or The angle between the material-contacting surface of the spiral blade of the spiral granulating blade (202) and the horizontal plane is 0 to 90 degrees.

7. The enhanced mixing and granulating integrated machine according to claim 4, characterized in that: The material-facing surface (20101) of the strip-shaped sheet blade of the mixing and stirring blade (201) is a wedge-shaped material-facing surface; and / or The angle between the material-contacting surface of the spiral blade of the spiral granulating blade (202) and the horizontal plane is 0 to 90 degrees.

8. The intensified mixing and granulating integrated machine according to claim 6, characterized in that: The angle between the material-contacting surface of the spiral blade of the spiral granulating blade (202) and the horizontal plane is 30 to 60 degrees.

9. The intensified mixing and granulating integrated machine according to claim 7, characterized in that: The angle between the material-contacting surface of the spiral blade of the spiral granulating blade (202) and the horizontal plane is 30 to 60 degrees.

10. The intensified mixing and granulating integrated machine according to any one of claims 1-3, 5, 7-9, characterized in that: The enhanced mixing and granulating integrated machine further comprises a dripping water adding system (6) arranged in the barrel (1); the dripping water adding system (6) comprises a dripping water pipe (601), a plurality of dripping water nozzles (602) and a dripping water regulating valve (603); the dripping water pipe (601) extends from one end of the barrel (1) into the interior of the barrel (1); the plurality of dripping water nozzles (602) are evenly distributed on the dripping water pipe (601) and are located above the mixing and stirring blades (201); the dripping water regulating valve (603) is arranged on the dripping water pipe (601) and is located outside the barrel (1); and / or The enhanced mixing and granulating integrated machine further comprises an atomizing water adding system (7) arranged in the barrel (1); the atomizing water adding system (7) comprises an atomizing water pipe (701), a plurality of atomizing nozzles (702) and an atomizing regulating valve (703); the atomizing water pipe (701) extends from one end of the barrel (1) into the interior of the barrel (1); the plurality of atomizing nozzles (702) are evenly distributed on the atomizing water pipe (701) and are located above the spiral granulating blades (202); the atomizing regulating valve (703) is arranged on the atomizing water pipe (701) and is located outside the barrel (1).

11. The intensified mixing and granulating integrated machine according to any one of claims 1-3, 5, 7-9, characterized in that: The direction of rotation of the cylinder (1) is opposite to the direction of rotation of the propeller shaft (2); and / or The integrated machine further comprises a material particle size detection device (8) arranged at the discharge port (102) of the cylinder (1).

12. The intensified mixing and granulating integrated machine according to claim 10, characterized in that: The direction of rotation of the cylinder (1) is opposite to the direction of rotation of the propeller shaft (2); and / or The integrated machine further comprises a material particle size detection device (8) arranged at the discharge port (102) of the cylinder (1).

13. The intensified mixing and granulating integrated machine according to any one of claims 1-3, 5, 7-9, characterized in that: The rotation speed of the cylinder (1) is less than Where: R is the radius of the cylinder, g is the acceleration due to gravity; and / or The inclination angle of the cylinder (1) is 1 to 10 degrees.

14. The intensified mixing and granulating integrated machine according to claim 10, characterized in that: The rotation speed of the cylinder (1) is less than Where: R is the radius of the cylinder, g is the acceleration due to gravity; and / or The inclination angle of the cylinder (1) is 1 to 10 degrees.

15. The intensified mixing and granulating integrated machine according to claim 13, characterized in that: The rotation speed of the cylinder (1) is and / or The inclination angle of the cylinder (1) is 1 to 5 degrees.

16. The intensified mixing and granulating integrated machine according to claim 14, characterized in that: The rotation speed of the cylinder (1) is and / or The inclination angle of the cylinder (1) is 1 to 5 degrees.

17. A method for performing enhanced mixing and granulation using the enhanced mixing and granulation integrated machine according to any one of claims 1 to 16, the method comprising the following steps: 1) The material to be mixed enters the barrel (1) through the feed port (101) at the higher end of the barrel (1), and the material rotates along with the barrel (1) and moves toward the lower feed port (102); 2) The material first enters the mixing and stirring blade (201) area, and the strip-shaped blades of the mixing and stirring blade (201) rotate together with the blade shaft (2). During the rotation process, the mixing and stirring blade (201) quickly cuts the material and drives the material to be ejected along the material discharge direction under the action of the wedge-shaped material-facing surface. The mixing and stirring blade (201) and the rotating cylinder (1) work together to arouse the violent cutting, convection and diffusion mixing of the material, thereby achieving efficient and strong mixing of the material to obtain a mixed material; 3) The mixed material then enters the area of ​​the spiral granulating blade (202), and the spiral blade of the spiral granulating blade (202) rotates together with the blade shaft (2). During the rotation process, the spiral granulating blade (202) collides with the mixed material, generating an axial force F1 and a radial force F2 pointing from the discharge port (102) to the feed port (101). The mixed material rolls in three-dimensional space under the combined action of the radial force F2 and the rotating cylinder (1). During the rolling process, the mixed material continuously adheres to the fine particles on the path and quickly grows into balls. Under the action of the axial force F1, the rolling granulation time of the mixed material is extended, and the granulated material after the granulation process is finally discharged from the discharge port (102).

18. The enhanced mixing granulation method according to claim 17, characterized in that: A material particle size detection device (8) is provided at the discharge port (102) of the cylinder (1). The material particle size detection device (8) detects the particle size of the granulated material discharged from the discharge port (102) as d0; the initial rotation speed of the paddle shaft (2) is set to Z0, r / min; according to the process conditions, the average particle size range of the granulated material is set to [d min , d max ]; Determine whether d0 is within the set particle size range [d min , d max ], adjust the real-time rotation speed Z1 of the propeller shaft (2), r / min; specifically: When d0>150%d max hour, When 130% d max <d0≤150%d max hour, When d max <d0≤130%d max hour, When d min ≤d0≤d max When Z1=Z0; When 80% d min <d0<d min hour, When 50% d min <d0≤80%d min hour, When d0≤50%d min hour, Among them: k1, k2, k3, k4, k5, k6 are the propeller shaft speed adjustment coefficients, the value range of k1 is 0.65-0.9, the value range of k2 is 0.35-0.65, the value range of k3 is 0.1-0.35, the value range of k4 is 0.15-0.5, the value range of k5 is 0.5-0.9, and the value range of k6 is 0.9-1.2; the particle size range [d min , d max ] is [3, 8] mm; The size of d0 is detected in real time, and the real-time rotation speed of the paddle shaft (2) is adjusted to Z1, so that the particle size d0∈[d min , d max ].

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