A ball milling system for batching fly ash

Abstract

This utility model discloses a ball milling system for batching fly ash, comprising a fly ash storage tank, an activator storage tank, a weighing scale, a feed hopper, and a ball mill. The ball mill includes a fixed base, a cylinder mounted on the fixed base, and two sets of bearing seats. A feed pipe and a discharge port are fixedly installed on both sides of the cylinder, with the ends of the feed pipe and the cylinder discharge port passing through the interior of the bearing seats. Several activation ring plates are sequentially fixed along the length of the inner wall of the cylinder, with the center line of the activation ring plates aligned with the center line of the cylinder. Several strip-shaped holes are formed on the activation ring plates, with the length of the strip-shaped holes arranged radially along the activation ring plates. The advantages of this utility model are: its simple and easy-to-implement connection structure ensures sufficient movement of the steel balls in the ball mill for grinding the material, achieving steel ball activation, fully realizing ultra-fine grinding of fly ash, and improving the utilization rate of fly ash to 36%.

Description

Technical fields:

[0001] This utility model relates to a batching ball milling system, and more particularly to a batching ball milling system for fly ash. Background technology:

[0002] Fly ash is a powder collected from the flue gas of pulverized coal boilers after coal is ground and burned in power plants. It can be used as an active material for artificial pozzolanic. Research on fly ash began relatively early both domestically and internationally, and it is now widely used in the building materials industry, particularly in cement and concrete. This is undoubtedly an effective way to utilize fly ash in large quantities. However, the fly ash currently used in cement and concrete is unprocessed, and the raw ash has low activity, resulting in a low direct usage rate of only about 20%, which greatly limits the utilization rate of solid waste. Utility model content:

[0003] The purpose of this utility model is to provide a fly ash batching ball milling system with a simple connection structure, which fully realizes ultrafine grinding of fly ash and improves the utilization rate of fly ash.

[0004] This utility model is implemented by the following technical solution: The purpose of this patent is to provide a ball milling system for batching fly ash, which includes a fly ash storage tank, an activator storage tank, a weighing scale, a feed hopper, and a ball mill; the discharge ends of the fly ash storage tank and the activator storage tank are both equipped with weighing scales, the discharge ends of the two weighing scales are connected to the feed inlet of the feed hopper, and the discharge inlet of the feed hopper is connected to the feed pipe of the ball mill; the ball mill includes a fixed base, a cylinder mounted on the fixed base, and two sets of bearing seats, the feed pipe and the discharge inlet are respectively fixed on both sides of the cylinder, and the ends of the feed pipe and the discharge inlet of the cylinder pass through the interior of the bearing seats; a plurality of activation ring plates are fixed sequentially along the length direction of the inner wall of the cylinder, the center line of the activation ring plate is a straight line with the center line of the cylinder, and a plurality of strip holes are opened on the activation ring plate, the length direction of the strip holes is arranged radially along the activation ring plate.

[0005] Furthermore, several curved liner plates are fixed inside the cylinder between the two activated ring plates. The thickness of the liner plates gradually decreases along their length, and the thick edge of the liner plate contacts the thin edge of the adjacent liner plate.

[0006] Furthermore, it also includes a fan, a dust collection hood, and a dust collector; the air outlet of the fan is connected to the feed pipe, the dust collection hood is provided at the discharge port of the cylinder, the air outlet of the dust collection hood is connected to the air inlet of the dust collector, and the discharge port of the dust collector is connected to the feed inlet of the feed hopper.

[0007] Furthermore, a rigid impeller feeder is provided at the discharge port of the feed hopper.

[0008] Advantages of this utility model: The connection structure of this utility model is simple and easy to implement. By setting an activation ring plate in the ball mill, the steel balls in the ball mill are ensured to move fully and grind the material, thus activating the steel balls. At the same time, the liner plate in the ball mill ensures that the material is carried up and lifted during the rotation of the cylinder. The larger steel balls fall first and the smaller steel balls fall later, which fully realizes the ultrafine grinding of fly ash and improves the utilization rate of fly ash to 36%. Attached image description:

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This is a schematic diagram of the overall structure of this utility model.

[0011] Figure 2 for Figure 1 A cross-sectional view of section AA.

[0012] Figure 3 for Figure 2 A cross-sectional view of section BB.

[0013] 1. Fly ash storage tank, 2. Activator storage tank, 3. Measuring scale, 4. Feed hopper, 5. Ball mill, 51. Fixed base, 52. Cylinder, 53. Bearing seat, 54. Feed pipe, 55. Activation ring plate, 55. Strip hole, 551. Liner, 56. Fan, 6. Dust collection hood, 7. Dust collector, 8. Rigid impeller feeder, 9. Detailed implementation method:

[0014] Example: Figure 1-3As shown, a fly ash batching ball milling system includes a fly ash storage tank 1, an activator storage tank 2, a weighing scale 3, a feed hopper 4, a ball mill 5, a fan 6, a dust collection hood 7, and a dust collector 8. The discharge ends of both the fly ash storage tank 1 and the activator storage tank 2 are equipped with weighing scales 3, and the discharge ends of the two weighing scales 3 are connected to the feed inlet of the feed hopper 4. The discharge inlet of the feed hopper 4 is connected to the feed pipe 54 of the ball mill 5. The ball mill 5 includes a fixed base 51, a cylinder 52 mounted on the fixed base 51, and two sets of bearing seats 53. Feed pipes 5 are fixedly installed on both sides of the cylinder 52. 4. The feed pipe 54 and the end of the discharge port of the cylinder 52 pass through the interior of the bearing seat 53; several activation ring plates 55 are fixed in sequence along the length direction of the inner wall of the cylinder 52 to ensure that the steel balls in the ball mill 5 can move fully and grind the material, thus realizing the activation of the steel balls. The center line of the activation ring plate 55 and the center line of the cylinder 52 are a straight line. Several strip holes 551 are opened on the activation ring plate 55. The length direction of the strip holes 551 is set along the radial direction of the activation ring plate 55, thus realizing the control of the movement speed of the material towards the discharge port of the cylinder 52.

[0015] Several curved liner plates 56 are fixed inside the cylinder 52 between the two activation ring plates 55, which play a role in protecting the cylinder 52. The thickness of the liner plates 56 gradually decreases along its length. The thick edge of the liner plate 56 contacts the thin edge of the adjacent liner plate 56, ensuring that the cylinder 52 carries up and lifts the material during rotation. The larger steel balls fall first, and the smaller steel balls fall later, which fully realizes the ultra-fine grinding of fly ash.

[0016] The air outlet of the blower 6 is connected to the feed pipe 54. A dust collection hood 7 is installed at the discharge port of the cylinder 52. The air outlet of the dust collection hood 7 is connected to the air inlet of the dust collector 8. The discharge port of the dust collector 8 is connected to the feed port of the feed hopper 4. A rigid impeller feeder 9 is installed at the discharge port of the feed hopper 4.

[0017] Working principle: Fly ash and activator are weighed to a certain amount by metering scale 3 and fed into feed hopper 4. Then, they are conveyed to ball mill 5 by rigid impeller feeder 9 to ensure a stable amount of material entering the mill. After that, the fly ash is ground into ultrafine powder by ball mill 5. Fan 6 blows air into ball mill 5, which not only conveys the material but also reduces the temperature of ball mill 5. After ball milling, the material is discharged from the outlet of ball mill 5 and collected by dust collection hood 7 and sent to dust collector 8. When the dust fineness in dust collector 8 meets the standard, it is collected as finished product. When the dust fineness in dust collector 8 does not meet the standard, it is returned to ball mill 5 for grinding.

[0018] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A ball milling system for batching fly ash, characterized in that, It includes a fly ash storage tank, an activator storage tank, a weighing scale, a feed hopper, and a ball mill; both the fly ash storage tank and the activator storage tank are equipped with weighing scales at their discharge ends, and the discharge ends of the two weighing scales are connected to the feed inlet of the feed hopper, which is connected to the feed pipe of the ball mill; the ball mill includes a fixed base, a cylinder mounted on the fixed base, and two sets of bearing seats, with the feed pipe and discharge inlet fixedly installed on both sides of the cylinder, and the ends of the feed pipe and the cylinder discharge inlet passing through the interior of the bearing seats; several activation ring plates are sequentially fixed along the length of the inner wall of the cylinder, the center line of the activation ring plates is a straight line with the center line of the cylinder, and several strip holes are opened on the activation ring plates, with the length direction of the strip holes arranged radially along the activation ring plates.

2. The fly ash batching ball milling system according to claim 1, characterized in that, Several curved liner plates are fixed inside the cylinder between the two activated ring plates. The thickness of the liner plates gradually decreases along their length, and the thick edge of the liner plate contacts the thin edge of the adjacent liner plate.

3. The fly ash batching ball milling system according to claim 1, characterized in that, It also includes a fan, a dust collection hood, and a dust collector; the air outlet of the fan is connected to the feed pipe, the dust collection hood is provided at the discharge port of the cylinder, the air outlet of the dust collection hood is connected to the air inlet of the dust collector, and the discharge port of the dust collector is connected to the feed inlet of the feed hopper.

4. A fly ash batching ball milling system according to any one of claims 1-3, characterized in that, A rigid impeller feeder is installed at the discharge port of the feed hopper.

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