A fly ash ball production line

Abstract

The utility model discloses a dust removal ash pressure ball recycling process production line, including the dust storage bin, the dust storage bin one side is equipped with bucket elevator, and the dust storage bin is equipped with the inclined screw conveyor between the discharge gate and bucket elevator, and the design metering bin below bucket elevator, and the metering bin below is equipped with the wheel roll mixer, and the wheel roll mixer below is equipped with the buffer bin, and the discharge gate of buffer bin is connected through main belt conveyor mixer, and the high pressure ball machine below mixer is equipped with, and the high pressure ball machine is connected with the distribution sieve, and the distribution sieve below is equipped with the return material conveyor, and the chute is equipped between return material conveyor and main belt conveyor, through being equipped with dust storage bin, bucket elevator, inclined screw conveyor, metering bin, wheel roll mixer, buffer bin, main belt conveyor, mixer, high pressure ball machine, thereby can carry out high pressure ball to dust removal ash, realizes the self -use in factory area, can reduce smelting raw and auxiliary materials purchase cost, reduces the risk and cost of dust removal ash as the dangerous waste and the external transport disposal.

Description

Technical Field

[0001] This utility model belongs to the technical field of dust removal ash briquetting production line, and in particular relates to a dust removal ash briquetting reuse process production line. Background Technology

[0002] During the electric arc furnace (EAF) steelmaking process, a significant amount of dust is generated. Currently, this dust is typically collected and disposed of. Dust is classified as hazardous waste, specifically HW23 zinc-containing waste, with the hazardous waste code 312-001-23. For dust collected by dust collection devices during the scrap steel EAF steelmaking process, the existing engineering treatment involves collecting it in ton bags or tank trucks under normal operating conditions and transporting it to a qualified landfill for disposal. The disposal cost is 700 yuan per ton, resulting in resource waste and increased operating costs for the company. However, internal reuse of the dust would offer significant economic and environmental benefits, reducing the cost of purchasing raw materials for smelting and minimizing the risks and costs associated with transporting the dust as hazardous waste. Utility Model Content

[0003] In view of the shortcomings and defects in the existing technology, the purpose of this utility model is to provide a dust ash briquetting and recycling process production line, which solves the problem of resource waste caused by the failure to recycle and process the dust ash collected in the workshop in the existing technology, and at the same time increases the operating costs of enterprises.

[0004] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: a dust removal ash briquetting and recycling process production line, including an ash storage silo, a bucket elevator on one side of the ash storage silo, an inclined screw conveyor between the discharge port of the ash storage silo and the inlet of the bucket elevator, a metering silo below the upper discharge port of the bucket elevator, a roller mill mixer below the discharge port of the metering silo, and a water glass storage tank for adding water glass to the roller mill mixer on one side. A buffer silo is provided below the discharge port of the roller mill mixer. The discharge port of the buffer silo is connected to the mixer via an inclined main belt conveyor. A high-pressure briquetting machine is provided below the mixer. A material distribution screen is connected to the discharge port of the high-pressure briquetting machine. An inclined return conveyor is provided below the screen of the material distribution screen. The discharge port of the front end of the material distribution screen is connected to a ton bag. The return conveyor is located in front of the main belt conveyor, and a chute is provided between the discharge port of the return conveyor at its left end and the feed port at its left end of the main belt conveyor.

[0005] As a further improvement of this utility model, a horizontal screw conveyor is also provided between the discharge port of the buffer hopper and the left end feed of the main belt conveyor.

[0006] As a further improvement of this utility model, the height of the discharge port at the left end of the return conveyor is higher than the feed port at the left end of the main belt conveyor, and the chute is gradually inclined downward from front to back.

[0007] As a further improvement of this utility model, the main belt conveyor is equipped with a dust cover throughout its entire length.

[0008] As a further improvement of this utility model, the mixer is also provided with an adhesive addition port.

[0009] Compared with the prior art, this utility model has the following advantages:

[0010] 1. A bucket elevator is connected to one side of the ash storage silo via an inclined screw conveyor. The inclined screw conveyor transports the dust from the ash storage silo to the inlet of the bucket elevator. The bucket elevator lifts the incoming dust to a high position and transports it to a metering silo for weighing. The weighed dust is then transported from the metering silo to a roller mill mixer for crushing and grinding. After being ground, the dust is transported from the roller mill mixer to a buffer silo for height buffering, and then from the buffer silo to the main belt conveyor. The main belt conveyor transports the dust to the mixer to be mixed with the binder, and then into the high-pressure briquetting machine for briquetting. The briquettes are then screened, and the screened briquettes are packaged in ton bags and transported to the electric arc furnace in the plant area for comprehensive utilization as slag-forming agents. The dust that is not briquetized after screening falls onto the return conveyor, and is then recycled back to the main belt conveyor via the return conveyor and chute. The main belt conveyor then transports it back to the mixer and high-pressure briquetting machine to be briquetized again, thereby improving the briquetting rate.

[0011] After the dust collector ash is manufactured into balls, it can be returned to the electric arc furnace within the plant area for comprehensive recycling as a slag-forming agent. This achieves self-reuse within the plant area, enabling more than 80% of the dust collector ash to be recycled and used to replace some lime, composite slag materials, etc., as slag-forming agents. The construction of the project can reduce the purchase cost of raw and auxiliary materials for smelting; reduce the risk and cost of transporting and disposing of dust collector ash as hazardous waste by internal reuse; and reduce the emission of particulate matter and other pollutants by "using new technology to replace old technology". It has good economic, social and environmental benefits.

[0012] 2. By setting the chute so that the height of the discharge port at the left end of the return conveyor is higher than the feed port at the left end of the main belt conveyor, the chute is gradually tilted downward from front to back, so that the dust collected from the return conveyor can automatically slide back onto the main belt conveyor under the action of gravity.

[0013] 3. By installing dust covers on the main belt conveyor, dust leakage is reduced, thus improving environmental friendliness. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings:

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

[0016] Figure 2 for Figure 1 Top view;

[0017] In the diagram: 1. Ash storage silo; 2. Inclined screw conveyor; 3. Bucket elevator; 4. Metering silo; 5. Roller mixer; 6. Buffer silo; 7. Main belt conveyor; 8. Return conveyor; 9. High-pressure briquetting machine; 10. Water glass storage tank; 11. Ton bag; 12. Mixer; 13. Horizontal screw conveyor; 14. Adhesive addition port; 15. Chute. Detailed Implementation

[0018] The following is in conjunction with the appendix Figure 1-2 The present invention will be described in further detail below. For clarity, only the structures relevant to the inventive features of the present invention are shown in the figures.

[0019] For ease of description, the coordinate system is defined as follows: Figure 1 As shown, the left and right directions are horizontal, the front and back directions are vertical, and the up and down directions are vertical.

[0020] This utility model discloses a production line for the reuse of dust removal ash briquettes, referring to... Figure 1 and Figure 2A dust removal ash briquetting and recycling production line includes an ash storage silo 1, which is connected to dust removal equipment and is an existing piece of equipment in the plant. A bucket elevator 3 is arranged on the right side of the ash storage silo 1. An inclined screw conveyor 2 is arranged between the discharge port of the ash storage silo 1 and the inlet of the bucket elevator 3. The inclined screw conveyor 2 is gradually inclined upward from left to right. A metering silo 4, also known as a weighing silo, is arranged below the upper discharge port of the bucket elevator 3 and can be supported on the ground. A roller mill mixer 5 is located below the discharge port of the metering silo 4 and is supported on the ground. A water glass storage tank 10 is also provided on one side of the roller mill mixer 5, which can add water glass to the roller mill mixer 5 through pipes and pumps. A buffer hopper 6 is provided below the discharge port of the roller mill mixer 5. The buffer hopper 6 is also supported and fixed on the ground. The buffer hopper 6 plays a role in the transfer and transition, which can reduce the single drop height of the dust and reduce the impact. A horizontal screw conveyor 13 is provided at the discharge port of the buffer hopper 6. The horizontal screw conveyor 13 transports the dust to the left end of the main belt conveyor 7. The main belt conveyor 7 is set to gradually tilt upward from left to right, and the main belt conveyor 7 transports the dust from the left end to the right end, and finally transports the dust to the mixer 12 to be mixed with the binder. A binder addition port 14 is also provided above the mixer 12 to add binder. The high pressure briquetting machine 9 is directly connected below the mixer 12. The high pressure briquetting machine 9 presses the dust into briquettes.

[0021] The discharge port of the high-pressure briquetting machine 9 is connected to a material distribution screen. The front discharge port of the material distribution screen is connected to a ton bag 11 or a material box to package the screened briquettes for easy subsequent transfer. The smaller dust particles screened off at the screen fall onto the right feed port of the inclined return conveyor 8. The return conveyor 8 transports the dust from right to left. The height of the left discharge port of the return conveyor 8 is higher than the left feed port of the main belt conveyor 7. The return conveyor 8 is located in front of the main belt conveyor 7, and a chute 15 is provided between the left discharge port of the return conveyor 8 and the left feed port of the main belt conveyor 7. The chute 15 is gradually inclined downward from front to back. By making the height of the left discharge port of the return conveyor 8 higher than the left feed port of the main belt conveyor 7, and by making the chute gradually inclined downward from front to back, the dust coming off the return conveyor 8 can automatically slide back onto the main belt conveyor 7 under the action of gravity. The dust collected on the main belt conveyor 7 is then transported back to the mixer 12 and then to the high-pressure briquetting machine 9 for briquetting again. This allows the dust collected that has not been successfully briquetized to be recycled and reused, reducing the waste of dust collected.

[0022] It should be noted that the aforementioned inclined screw conveyor 2, bucket elevator 3, roller mill mixer 5, buffer silo 6, mixer 12, high-pressure briquetting machine 9, etc., can all be corresponding equipment commonly used in existing technologies. The main belt conveyor 7 and return conveyor 8 can be common belt conveyors. Furthermore, the main belt conveyor 7 is equipped with a dust cover throughout its entire length. The dust cover is installed using a dustproof structure commonly used in existing technologies, reducing dust leakage and improving environmental friendliness.

[0023] The implementation principle and effect of this utility model are as follows: A bucket elevator 3 is connected to one side of the ash storage silo 1 via an inclined screw conveyor 2. The inclined screw conveyor 2 transports the dust collected from the ash storage silo 1 to the inlet of the bucket elevator 3. The bucket elevator 3 lifts the incoming dust collected to a high position and transports it to a metering silo 4 for weight measurement. The measured dust collected is then transported from the metering silo 4 to a roller mill mixer for crushing and grinding. After grinding, the dust collected is transported from the roller mill mixer 5 to a buffer silo 6 for height buffering, and then from the buffer silo 6 to... On the main belt conveyor 7, the dust collected by the dust collector is transported to the mixer 12 and mixed with the binder. Then, it enters the high-pressure briquetting machine 9 to form briquettes. The briquettes are then screened, and the screened briquettes are packaged in the ton bag 11 and transported to the electric arc furnace in the plant area for comprehensive utilization as slag-forming agents. The dust collected by the dust collector that is not briquetted after screening falls onto the return conveyor 8, and is then recycled back to the main belt conveyor 7 via the return conveyor 8 and the chute. The main belt conveyor 7 then transports the dust back to the mixer 12 and the high-pressure briquetting machine 9 to form briquettes again, thereby improving the briquetting rate.

[0024] After the dust collector ash is manufactured into balls, it can be returned to the electric arc furnace within the plant area for comprehensive recycling as a slag-forming agent. This achieves self-reuse within the plant area, enabling more than 80% of the dust collector ash to be recycled and used to replace some lime, composite slag materials, etc., as slag-forming agents. The construction of the project can reduce the purchase cost of raw and auxiliary materials for smelting; reduce the risk and cost of transporting and disposing of dust collector ash as hazardous waste by internal reuse; and reduce the emission of particulate matter and other pollutants by "using new technology to replace old technology". It has good economic, social and environmental benefits.

[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances. It should be understood that the specific embodiments described herein are only for understanding this utility model and are not intended to limit this utility model. All other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of this utility model.

Claims

1. A dust collector ash briquetting and recycling process production line, comprising an ash storage silo, characterized in that: A bucket elevator is installed on one side of the ash storage silo. An inclined screw conveyor is installed between the discharge port of the ash storage silo and the inlet of the bucket elevator. A metering silo is installed below the upper discharge port of the bucket elevator. A roller mill mixer is installed below the discharge port of the metering silo. A water glass storage tank for adding water glass to the roller mill mixer is also installed on one side of the roller mill mixer. A buffer silo is installed below the discharge port of the roller mill mixer. The discharge port of the buffer silo is connected to a mixer via an inclined main belt conveyor. A high-pressure briquetting machine is installed below the mixer. A distribution screen is connected to the discharge port of the high-pressure briquetting machine. An inclined return conveyor is installed below the screen of the distribution screen. The discharge port of the front end of the distribution screen is connected to a ton bag. The return conveyor is located in front of the main belt conveyor, and a chute is installed between the left discharge port of the return conveyor and the left inlet of the main belt conveyor.

2. The dust collector ash briquetting and recycling process production line according to claim 1, characterized in that: A horizontal screw conveyor is also provided between the outlet of the buffer hopper and the feed inlet at the left end of the main belt conveyor.

3. The dust collector ash briquetting and recycling process production line according to claim 1, characterized in that: The height of the discharge port at the left end of the return conveyor is higher than the feed port at the left end of the main belt conveyor, and the chute is set to gradually slope downward from front to back.

4. The dust collector ash briquetting and recycling process production line according to claim 1, characterized in that: The main belt conveyor is equipped with a dust cover throughout its entire length.

5. The dust collector ash briquetting and recycling process production line according to claim 1, characterized in that: The mixer is also equipped with an adhesive addition port.

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