CN215586737U - Feeding system of lime stone among dirty sour processing procedure - Google Patents
Feeding system of lime stone among dirty sour processing procedure Download PDFInfo
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- CN215586737U CN215586737U CN202121283822.7U CN202121283822U CN215586737U CN 215586737 U CN215586737 U CN 215586737U CN 202121283822 U CN202121283822 U CN 202121283822U CN 215586737 U CN215586737 U CN 215586737U
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- limestone
- ball mill
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- grading
- grading cyclone
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Abstract
The utility model belongs to the field of metal smelting, and particularly relates to a limestone feeding system in a waste acid treatment process, which comprises a ball mill, wherein a feeding port of the ball mill is connected with a limestone feeding unit, and the limestone feeding system is characterized in that: the discharge port of the ball mill is connected with the feed port of the grading cyclone, the coarse material outlet of the grading cyclone is connected to the feed port of the ball mill, and the fine material outlet of the grading cyclone is connected to the limestone feed port of the waste acid treatment system; the limestone feeding unit feeds limestone into a ball mill for water adding and ball milling treatment, the obtained ball milling slurry enters a grading cyclone, the grading cyclone is used for grading, the obtained coarse material returns to the ball mill for ball milling treatment, and the obtained fine material is conveyed to a waste acid purification system. By adopting the scheme, the limestone particles with larger particle size in the limestone emulsion obtained after ball milling are separated by utilizing the grading cyclone, and the limestone particles are returned to the ball mill for repeated ball milling, so that the particle size in the limestone emulsion is reduced, and the utilization rate of limestone is effectively improved.
Description
Technical Field
The utility model belongs to the field of metal smelting, and particularly relates to a limestone feeding system in a waste acid treatment process.
Background
The waste acid generated by purifying the smelting flue gas is generally neutralized by limestone emulsion to generate a byproduct gypsum slag (CaSO)4﹒2H2O). The limestone emulsion is generally prepared by ball milling in a wet overflow ball mill, 5-15 mm limestone and water are continuously added into the ball mill, and the limestone emulsion with the granularity of about 200 meshes is prepared after ball milling. However, due to the influence of the amount of limestone fed and the amount of water added, it is difficult to avoid some limestone particles with larger particle size in the limestone emulsion. The limestone particles have small specific surface area and are difficult to completely react when in contact reaction with waste acid, and the limestone particles are made of CaCO3In the form of limestone, resulting in a lower limestone utilization efficiency.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a feeding system for limestone in a waste acid treatment process, which can effectively improve the utilization rate of the limestone.
In order to achieve the purpose, the utility model adopts the technical scheme that:
the utility model provides a charging system of dirty sour processing in-process lime stone, includes the ball mill, the pan feeding mouth of ball mill connects lime stone feed unit, its characterized in that: the discharge port of the ball mill is connected with the feed port of the grading cyclone, the coarse material outlet of the grading cyclone is connected to the feed port of the ball mill, and the fine material outlet of the grading cyclone is connected to the limestone feed port of the waste acid treatment system; the limestone feeding unit feeds limestone into a ball mill for water adding and ball milling treatment, the obtained ball milling slurry enters a grading cyclone, the grading cyclone is used for grading, the obtained coarse material returns to the ball mill for ball milling treatment, and the obtained fine material is conveyed to a waste acid purification system.
By adopting the scheme, the limestone particles with larger particle size in the limestone emulsion obtained after ball milling are separated by utilizing the grading cyclone, and the limestone particles are returned to the ball mill for repeated ball milling, so that the particle size in the limestone emulsion is reduced, and the utilization rate of limestone is effectively improved.
Drawings
FIG. 1 is a schematic view of a limestone feed system of the present invention.
Detailed Description
The technical scheme of the utility model is further detailed in the following with reference to the accompanying drawings.
A feeding system of limestone in a waste acid purification process comprises a ball mill 10, wherein a feeding port of the ball mill 10 is connected with a limestone feeding unit A, a discharging port of the ball mill 10 is connected with a feeding port of a grading cyclone 20, a coarse material outlet of the grading cyclone 20 is connected with a feeding port of the ball mill 10, and a fine material outlet of the grading cyclone 20 is connected with a limestone feeding port of a waste acid treatment system B; the limestone feeding unit A conveys limestone to the ball mill 10, water is added for ball milling treatment, the obtained ball milling slurry enters the classification cyclone 20, the classification of the classification cyclone 20 is carried out, the obtained coarse material returns to the ball mill 10 for ball milling treatment, and the obtained fine material is conveyed to the waste acid purification system B.
A slurry buffer tank 30 is arranged between the discharge hole of the ball mill 10 and the feed hole of the grading cyclone 20; a feed pump 40 is arranged between the slurry buffer tank 30 and the classifying cyclone 20. A slurry finished product groove 50 is arranged at the fine material outlet of the grading cyclone 20.
Specifically, the limestone feeding unit a feeds limestone to a feeding port of the ball mill 10, which is generally a wet overflow ball mill, and water and limestone are added, and the materials are crushed by impact grinding of a built-in steel ball through rotation of a ball mill cylinder to prepare slurry.
Slurry is pumped from the slurry buffer tank 30 via a feed pump 40 to the classifying cyclone 20, the pressure prevailing during the pumping providing power for the high speed rotation of the slurry within the cyclone. After the slurry enters the classification cyclone 20, coarse materials in the slurry enter the periphery of a revolving flow under the action of larger centrifugal force by utilizing the different centrifugal force applied to different-granularity particles in the slurry under high-speed rotation, and are finally discharged from a sand settling nozzle at the bottom of the cyclone and enter the ball mill 10; the fine material is subjected to smaller centrifugal force, is positioned in the center of the rotary flow, moves upwards along with the liquid flow, and is discharged from the overflow pipe to enter a finished product tank.
After the scheme is put into use, the operation is stable, solid-phase particles with the particle size of-200 meshes in the lime milk slurry are improved from 60% to more than 90%, the utilization rate of limestone is greatly improved, and the effect is obvious.
Claims (4)
1. The utility model provides a feeding system of lime stone among dirty sour processing procedure, includes ball mill (10), lime stone feeding unit (A), its characterized in that are connected to the pan feeding mouth of ball mill (10): the discharge hole of the ball mill (10) is connected with the feed inlet of a grading cyclone (20), the coarse material outlet of the grading cyclone (20) is connected to the feed inlet of the ball mill (10), and the fine material outlet is connected to the limestone feed inlet of the waste acid treatment system (B); the limestone feeding unit (A) feeds limestone into the ball mill (10) for water adding and ball milling treatment, the obtained ball milling slurry enters the classification cyclone (20), the classification cyclone (20) performs classification, the obtained coarse material returns to the ball mill (10) for ball milling treatment, and the obtained fine material is conveyed to the waste acid purification system (B).
2. The limestone charging system according to claim 1, characterized in that: and a slurry buffer tank (30) is arranged between the discharge hole of the ball mill (10) and the feed inlet of the grading cyclone (20).
3. The limestone charging system according to claim 2, characterized in that: a feeding pump (40) is arranged between the slurry buffer tank (30) and the grading cyclone (20).
4. The limestone charging system according to claim 1, characterized in that: and a slurry finished product groove (50) is arranged at a fine material outlet of the grading cyclone (20).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121283822.7U CN215586737U (en) | 2021-06-09 | 2021-06-09 | Feeding system of lime stone among dirty sour processing procedure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121283822.7U CN215586737U (en) | 2021-06-09 | 2021-06-09 | Feeding system of lime stone among dirty sour processing procedure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215586737U true CN215586737U (en) | 2022-01-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121283822.7U Active CN215586737U (en) | 2021-06-09 | 2021-06-09 | Feeding system of lime stone among dirty sour processing procedure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215586737U (en) |
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2021
- 2021-06-09 CN CN202121283822.7U patent/CN215586737U/en active Active
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