A charge mixing and granulating apparatus

Abstract

The utility model discloses a kind of furnace charge mixing granulating equipment, belong to nonferrous smelting equipment technical field. Including mixing cylinder, the inner lining is arranged on the mixing cylinder inner wall, and the inner lining is provided with several rows of mutually parallel material lifting devices, the material lifting device is fixed on the inner lining inner wall by several bolts, and the inner lining is fixed on the mixing cylinder inner wall by several bolts. The inner lining and material lifting device made of ultrahigh molecular weight polyethylene plate material are set, and the problems of poor mixing cylinder granulating effect, great maintenance difficulty and frequent cleaning are fully solved.

Description

Technical Field

[0001] This utility model relates to the field of non-ferrous smelting equipment technology, specifically to a furnace charge mixing and granulation equipment. Background Technology

[0002] In non-ferrous metallurgy, furnace charge preparation involves mixing concentrates and various materials, granulating them into pellets, and then using specific facilities and matching appropriate material ratios to ensure uniform mixing, good contact and reaction between sulfur and oxygen, promoting a sustained and complete reaction. A mixing cylinder is used for mixing and granulating the furnace charge, and the quality of the granulation plays a crucial role in the entire sintering process. It reflects the permeability of the furnace charge and directly affects the sintering quality. Existing mixing cylinders typically use wear-resistant cast iron liners and steel bars as feeders. During use, the following problems arise: 1. The cast iron liner is easily worn off, making maintenance difficult. 2. Due to improper feeder placement, a smooth surface forms on the inner wall of the cylinder, rendering the feeders ineffective and resulting in poor granulation and pelletizing. 3. Severe material adhesion occurs on the inner wall, exceeding 100mm in thickness, making the cylinder wall smooth and eliminating its ability to retain material. 4. Frequent cleaning is required, leading to high workload and a short production cycle. Summary of the Invention

[0003] The purpose of this invention is to provide a furnace charge mixing and granulation device to solve the problems existing in the prior art.

[0004] The technical solution adopted in this utility model is as follows:

[0005] A furnace charge mixing and granulation device includes a mixing cylinder 1, an inner lining 2 provided on the inner wall of the mixing cylinder 1, and several rows of parallel feeders 3 provided on the inner lining 2. The feeders 3 are fixed to the inner wall of the inner lining 2 by several bolts 4, and the inner lining 2 is fixed to the inner wall of the mixing cylinder 1 by several bolts 4.

[0006] The longitudinal section of the feeder 3 is trapezoidal, with a height of 80mm, a bottom width of 120mm, and a top width of 80mm.

[0007] The distance between adjacent lifting devices at a distance of 1.5 to 1.6 m from the discharge end of the mixing cylinder 1 is 1120 mm, and the distance between two adjacent lifting devices 3 at other parts of the mixing cylinder 1 is 628 mm.

[0008] Both the inner liner 2 and the feeder 3 are made of ultra-high molecular weight polyethylene sheets.

[0009] The feeder 3 is parallel to the central axis of the mixing cylinder 1.

[0010] The mixing cylinder 1 is divided into several granulation zones along its length. Each granulation zone is provided with several feeders 3 at equal intervals. The feeders 3 of adjacent granulation zones are staggered along their length.

[0011] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0012] The lining and feeder made of ultra-high molecular weight polyethylene (UHMWPE) sheet of this invention have excellent wear resistance and erosion resistance, and a smooth surface with extremely low water absorption. When the furnace charge is fully lifted, it can effectively improve the material adhesion to the inner wall. At the same time, it is lightweight and easy to cut, which greatly reduces the labor intensity of maintenance and replacement. It has good toughness and can be tightly bonded to the cylinder wall during installation, with good screw fastening performance. UHMWPE has strong rebound force, which can greatly reduce the impact of materials on the hopper and reduce noise.

[0013] This invention uses bolts to position and fix the liner and the feeder, reducing maintenance time and labor intensity. More importantly, it fits tightly against the inner wall of the cylinder, preventing material from getting stuck. Furthermore, the bolt heads are deeply embedded, effectively preventing the liner from falling off due to wear.

[0014] The lifting device of this invention can increase the height of the furnace charge, increase the agitation, and improve the granulation effect. The spacing between adjacent lifting devices at 1.5 to 1.6m from the discharge end is 1120 mm, which slows down the lifting intensity in the discharge section and reduces the height difference of the furnace charge falling, thus reducing the impact and breakage during movement. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model;

[0016] Figure 2 for Figure 1 A schematic diagram in direction A;

[0017] Figure 3 This is a layout diagram of the material feeder of this utility model;

[0018] Figure 4 This is a distribution diagram of the material lifting device of this utility model;

[0019] In the diagram: 1-mixing cylinder; 2-lining; 3-feeder; 4-bolt. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0022] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Example

[0023] like Figure 1-4 This embodiment provides a furnace charge mixing and granulation device, including a mixing cylinder 1. An inner lining 2 is provided on the inner wall of the mixing cylinder 1, and several rows of parallel feeders 3 are arranged on the inner lining 2. The feeders 3 are parallel to the central axis of the mixing cylinder 1. Both the inner lining 2 and the feeders 3 are made of ultra-high molecular weight polyethylene (UHMW-PE) sheets. The feeders 3 are fixed to the inner wall of the inner lining 2 by several bolts 4, and the inner lining 2 is fixed to the inner wall of the mixing cylinder 1 by several bolts 4.

[0024] The longitudinal section of the feeder 3 is trapezoidal, with a height of 80mm, a bottom width of 120mm, and a top width of 80mm. This feeder improves its material-holding function, increases the height of the furnace charge, and causes more intense tumbling, thus improving the granulation effect.

[0025] The distance between adjacent feeders on the mixing cylinder 1, located 1.5–1.6 m from the discharge end, is 1120 mm. This 1120 mm distance between adjacent feeders slows down the feeding process in the discharge section and reduces the height difference of the falling charge, thus reducing breakage during movement. The distance between any two adjacent feeders 3 on the remaining parts of the mixing cylinder 1 is 628 mm. This 628 mm distance between adjacent feeders extends the residence time of the charge within the cylinder, resulting in more thorough mixing and granulation; it also ensures a stable pelletizing rate during discharge after the charge has been granulated and pelletized.

[0026] like Figure 3 The mixing cylinder 1 is divided into several granulation zones along its length. Each granulation zone is provided with several rows of feeders 3 at equal intervals. The feeders 3 are arranged along the direction of the mixing cylinder 1, and the feeders 3 of adjacent granulation zones are staggered from each other in their length direction (horizontal position).

Claims

1. A furnace charge mixing and granulation device, comprising a mixing cylinder (1), characterized in that, The mixing cylinder (1) is provided with an inner lining (2) on its inner wall. Several rows of parallel feeders (3) are provided on the inner lining (2). The feeders (3) are fixed to the inner wall of the inner lining (2) by several bolts (4). The inner lining (2) is fixed to the inner wall of the mixing cylinder (1) by several bolts (4).

2. The furnace charge mixing and granulation equipment according to claim 1, characterized in that: The longitudinal section of the feeder (3) is trapezoidal, with a height of 80mm, a bottom width of 120mm, and a top width of 80mm.

3. The furnace charge mixing and granulation equipment according to claim 1, characterized in that: The distance between adjacent lifting devices at a distance of 1.5 to 1.6 m from the discharge end of the mixing cylinder (1) is 1120 mm, and the distance between two adjacent lifting devices (3) at other parts of the mixing cylinder (1) is 628 mm.

4. The furnace charge mixing and granulation equipment according to claim 1, characterized in that: The inner lining (2) and the feeder (3) are both made of ultra-high molecular weight polyethylene sheets.

5. The furnace charge mixing and granulation equipment according to claim 1, characterized in that: The feeder (3) is parallel to the central axis of the mixing cylinder (1).

6. The furnace charge mixing and granulation equipment according to claim 5, characterized in that: The mixing cylinder (1) is divided into several granulation zones along its length. Several feeders (3) are set at equal intervals in each granulation zone. The feeders (3) of two adjacent granulation zones are staggered in their length direction.

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