CN112718134A - Improved method for improving wet grinding efficiency and reducing abrasion - Google Patents
Improved method for improving wet grinding efficiency and reducing abrasion Download PDFInfo
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- CN112718134A CN112718134A CN202011513573.6A CN202011513573A CN112718134A CN 112718134 A CN112718134 A CN 112718134A CN 202011513573 A CN202011513573 A CN 202011513573A CN 112718134 A CN112718134 A CN 112718134A
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- wet grinding
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- porcelain
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/10—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
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Abstract
The invention discloses an improved method for improving wet grinding efficiency and reducing abrasion, belonging to the technical field of wet grinding in titanium dioxide production, wherein alumina ceramic balls with the types of phi 8, phi 10 and phi 14 are adopted to simultaneously participate in wet grinding, and the mass ratio of the ceramic balls with the types of phi 8, phi 10 and phi 14 is 3:4: 3. The wet grinding improvement method provided by the invention can reduce the abrasion of the porcelain ball from the original 350 mg/ton TiO2Down to a maximum of 100 mg/ton TiO2The time for adding the porcelain balls can be prolonged by at least one time, the times for adding the porcelain balls are reduced, and the cost of the porcelain balls can be reduced due to the reduction of the adding amount; meanwhile, the number of times of adding the porcelain balls is reduced, so that the number of times of parking is correspondingly reduced, and the working efficiency is improved.
Description
Technical Field
The invention belongs to the technical field of wet grinding in titanium dioxide production, and particularly relates to an improved method for improving wet grinding efficiency and reducing abrasion.
Background
In the production process of titanium dioxide, wet grinding is important, the wet grinding effect is poor, the normal operation of the production of the subsequent working section is directly influenced, and the product quality is unqualified. The grinding efficiency of the wet grinder has a direct relation with the size and the material of the porcelain ball, and the proper size is selected, so that the contact area is large during grinding, the grinding is sufficient, the effect is better, the grinding is not suitable, the contact area is small during grinding, the grinding is insufficient, and the effect is not good; under the condition that the sizes of the porcelain balls are proper, the materials of the porcelain balls are also important, the porcelain balls with poor quality have high abrasion and large abrasion loss, so that the grinding is insufficient in the production process, the screen allowance is once large, the quality cannot be guaranteed, the period for supplementing and replacing the porcelain balls is greatly accelerated, the cost is increased, the stability of production and the quality fluctuation are influenced, and the normal operation of subsequent production is influenced.
In the prior art, the grinding balls used for grinding are various, the ceramic grinding balls mainly comprise alumina, zirconia, silicon carbide, silicon nitride and the like, and because in the process of producing titanium dioxide, the medium in direct contact with the material has strict requirements and needs to meet the process production requirements, the ceramic balls are compared with the alumina, zirconia, silicon carbide, silicon nitride and the like, and the alumina ceramic balls are found to meet the production requirements of people in terms of materials and have the characteristics of low abrasion and impact resistance, so that the ceramic balls are more suitable for the process requirements of people.
Although the alumina porcelain ball is more in line with the production requirements, the grinding efficiency is always difficult to improve in production. Meanwhile, the abrasion is serious, the abrasion usually reaches 350 mg/ton TiO2, the abrasion of the ceramic balls is about the use cost and the driving stability of a wet grinding machine, the higher the abrasion of the ceramic balls is, the more the times and the addition amount of the ceramic balls are added, the higher the cost is, and the driving stability is poor, otherwise, the lower the abrasion of the ceramic balls is, the less the addition times are, the addition amount is, and the lower the cost is, so how to reduce the abrasion is one of the methods for reducing the cost and improving the working efficiency.
Disclosure of Invention
The invention aims to provide an improved method for improving wet grinding efficiency and reducing abrasion, so as to solve the problem that the grinding efficiency is difficult to improve in the prior grinding technology.
In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
an improved method for improving wet grinding efficiency and reducing abrasion adopts alumina ceramic balls with the models of phi 8, phi 10 and phi 14 respectively to participate in wet grinding at the same time, and the mass ratio of the alumina ceramic balls with the models of phi 8, phi 10 and phi 14 is 3:4: 3.
Preferably, the three types of porcelain balls with the diameter of 8, the diameter of 10 and the diameter of 14 are Pingxiang middle European porcelain balls.
Preferably, in the wet grinding process, the weight ratio of the porcelain balls to the grinding material to the water is 20:6: 5.
Preferably, in the wet grinding process, the loading capacity of the ball mill is 2/3-4/5 of the effective volume of the cylinder.
Compared with the prior art, the invention has the following beneficial effects:
1. the wet grinding improvement method provided by the invention can reduce the abrasion of the porcelain ball from the original 350 mg/ton TiO2Down to a maximum of 100 mg/ton TiO2The time for adding the porcelain balls can be prolonged by at least one time, the times for adding the porcelain balls are reduced, and the cost of the porcelain balls can be reduced due to the reduction of the adding amount; meanwhile, the number of times of adding the porcelain balls is reduced, so that the number of times of parking is correspondingly reduced, and the working efficiency is improved;
2. according to the wet grinding improvement method provided by the invention, under the same grinding time, the wet grinding slurry has less screen residue, which shows that the grinding efficiency is improved;
3. put into use in a production workshop, the abrasion of the porcelain ball is changed from the original 350 mg/ton TiO2Reduced to 100 mg/ton TiO2Comparing the Pingxiang shun porcelain ball with the middle Europe porcelain ball, the Zhunhen porcelain ball supplements 1T porcelain ball amount per month according to each wet grinder (still insufficient, the grinding effect is not good), and the middle Europe porcelain ball supplements 0.4T porcelain ball per month (enough, the effect is good), the cost can be reduced by 10700X 1-20800X 0.4X 12-28560 yuan/year, the use of the middle Europe porcelain ball not only saves supplement material cost 28560 yuan per year, but also has better grinding effect than Shunzhen, and less screen residue;
4. the method solves the problem that the sifting residue of the wet grinding machine exceeds the standard, the project is put into use, the production input cost and the operation cost of an enterprise are saved on the premise of optimization, the economic benefit and the product quality are relatively improved for the whole titanium white industry, the dilemma of the sharp increase of the production cost can be relieved, and the whole development of the titanium white industry is promoted.
Detailed Description
The present invention is further illustrated by the following examples, which include, but are not limited to, the following examples.
Example 1
The influence of the size of the porcelain ball on the grinding efficiency and the porcelain ball abrasion is researched, and the content is as follows:
1. four billiard ball mills are selected in a workshop, and the influence of the sizes of the same ceramic ball models on the grinding efficiency is compared.
2. Four types of European porcelain balls in Pingxiang, of which the types are 1# ball mill (phi 6, phi 8 and phi 10), 2# ball mill (phi 6, phi 8 and phi 13), 3# ball mill (phi 8, phi 10 and phi 14) and 4# ball mill (phi 10, phi 14 and phi 16), are selected for comparison experiments.
3. Respectively adding 20t of porcelain balls with different models for four billiard ball mills to carry out experiments, paying attention to the sifting residue and current of materials at the outlet of the ball mill every day during the experiments, and comparing the grinding efficiency; the porcelain balls were weighed daily.
3.1 Experimental procedure: (four billiard ball mill operating procedure is consistent)
3.2 Start-up and Normal operation thereof
3.2.1 opening the sand water filter valve to cool the bearing bush, and discharging cooling water into the outer pipe.
3.2.2 opening a cooling water main valve of a wet grinding machine bearing bush and cooling water inlet valves of front and rear bearing bushes, and controlling the flow to be 100-200L/h.
3.2.3 starting the bearing bush circulating oil pump, and controlling the opening degree to be 90%.
3.2.4 open dispersant reservoir inlet and outlet valves, notify chemical configuration post to feed to reservoir.
3.2.5 the wet grinding host is started to observe the current and oil temperature of the host.
3.2.6 according to the production task, calculating the flow of the desalted water and the dispersing agent, wherein the weight ratio of the ceramic balls to the grinding materials to the water is 20:6:5, and the loading capacity of the ball mill is 2/3-4/5 of the effective volume of the cylinder.
3.2.7 open the desalted and dispersant feed valves and then adjust the desalted and dispersant flow to the desired flow on the computer DCS operating interface.
3.2.8 starting the star feeder in DCS system, setting the HZ number of the rolling mill according to production task, weighing the rolling mill and interlocking with the screw, automatically adjusting the HZ number, controlling the weighing of the rolling mill to 80 + -10 Kg, and observing whether the feeding amount is normal on the screw observation port.
3.2.9 observing whether the operation of the feed inlet, the discharge outlet and the vibrating screen of the wet grinder is normal or not and whether the leakage of the material exists or not, sampling and detecting the concentration, the pH value, the 325-mesh screen residue and the content of SiO2 of the slurry after discharging for one hour, and adjusting the flow of the desalted water and the dispersing agent according to the detection result.
3.2.10 when the liquid level of the wet grinding buffer tank submerges the stirring paddle, stirring is started.
3.2.11 when the liquid level reaches the buffer tank one third position, the sand mill feed is prepared.
3.2.12 when the liquid level is too low, the sanding is informed, the feeding of the sanding is stopped, and the outlet valve of the buffer tank is closed. And when the liquid level is too high and the subsequent process cannot produce, stopping the wet grinder for a while according to normal stop.
3.2.13 the production process comprises sampling and analyzing according to the regulations, and recording carefully, wherein the recording content comprises the surplus of materials discharged from the ball mill every day, the current and the weight of the porcelain ball. (the feed of desalted water, dispersant, materials was operated in DCS, other manual operations)
The following table (table 1) is a statistical table of 8 consecutive days:
TABLE 1 comparison table of the influence of the size of the porcelain ball on the grinding efficiency and the porcelain ball abrasion
Example 2
The influence of the matching of three types of porcelain balls on the grinding efficiency and the porcelain ball abrasion is researched, and the contents are as follows:
1. and selecting three billiard ball mills in a workshop, and comparing the influence of the matching of three ceramic ball models on the grinding efficiency and the abrasion.
2. Selecting medium-European porcelain balls, wherein the models of the three porcelain balls are phi 8, phi 10 and phi 14, and the three proportions of the three porcelain balls are 3:4:3, 3:3:3 and 2:1:3 respectively.
3. Respectively adding 20t of porcelain balls with the same type and different proportions into the three billiard ball mills for carrying out experiments, paying attention to the sifting residue and current of the materials at the outlet of the ball mill every day during the experiments, and comparing the grinding efficiency; the porcelain balls were weighed daily.
3.1 Experimental procedure: (three billiard ball mill operating procedure is consistent)
3.2 Start-up and Normal operation thereof
3.2.1 opening the sand water filter valve to cool the bearing bush, and discharging cooling water into the outer pipe.
3.2.2 opening a cooling water main valve of a wet grinding machine bearing bush and cooling water inlet valves of front and rear bearing bushes, and controlling the flow to be 100-200L/h.
3.2.3 starting the bearing bush circulating oil pump, and controlling the opening degree to be 90%.
3.2.4 open dispersant reservoir inlet and outlet valves, notify chemical configuration post to feed to reservoir.
3.2.5 the wet grinding host is started to observe the current and oil temperature of the host.
3.2.6 according to the production task, calculating the flow of the desalted water and the dispersing agent, wherein the weight ratio of the ceramic balls to the grinding materials to the water is 20:6:5, and the loading capacity of the ball mill is 2/3-4/5 of the effective volume of the cylinder.
3.2.7 open the desalted and dispersant feed valves and then adjust the desalted and dispersant flow to the desired flow on the computer DCS operating interface.
3.2.8 starting the star feeder in DCS system, setting the HZ number of the rolling mill according to production task, weighing the rolling mill and interlocking with the screw, automatically adjusting the HZ number, controlling the weighing of the rolling mill to 80 + -10 Kg, and observing whether the feeding amount is normal on the screw observation port.
3.2.9 observing whether the operation of the feed inlet, the discharge outlet and the vibrating screen of the wet grinder is normal or not and whether the leakage of the material exists or not, sampling and detecting the concentration, the pH value, the 325-mesh screen residue and the content of SiO2 of the slurry after discharging for one hour, and adjusting the flow of the desalted water and the dispersing agent according to the detection result.
3.2.10 when the liquid level of the wet grinding buffer tank submerges the stirring paddle, stirring is started.
3.2.11 when the liquid level reaches the buffer tank one third position, the sand mill feed is prepared.
3.2.12 when the liquid level is too low, the sanding is informed, the feeding of the sanding is stopped, and the outlet valve of the buffer tank is closed. And when the liquid level is too high and the subsequent process cannot produce, stopping the wet grinder for a while according to normal stop.
3.2.13 the production process comprises sampling and analyzing according to the regulations, and recording carefully, wherein the recording content comprises the surplus of materials discharged from the ball mill every day, the current and the weight of the porcelain ball. (the feed of desalted water, dispersant, materials was operated in DCS, other manual operations)
The following table (table 2) is a statistical table of 8 consecutive days:
TABLE 2 comparison table of the impact of porcelain ball ratio on grinding efficiency and porcelain ball abrasion
Example 3
The influence of different kinds of ceramic balls on the grinding efficiency and the ceramic ball abrasion is researched, and the content is as follows:
1. two billiard ball mills are selected in a workshop, and the influence of two ceramic balls on grinding efficiency and abrasion is compared.
2. Selecting Pingxiang Zhouyu porcelain ball and Pingxiang Shunxian porcelain ball as research objects.
3. Adding 20t of different porcelain balls with the same type and proportion (phi 8: phi 10: phi 14 weight ratio is 3:4:3) into the two billiard ball mills respectively to carry out experiments, paying attention to the sifting residue and current of the materials at the outlet of the ball mill every day during the experiments, and comparing the grinding efficiency; the porcelain balls were weighed daily.
3.1 Experimental procedure: (two billiard ball mills operating in the same step)
3.2 Start-up and Normal operation thereof
3.2.1 opening the sand water filter valve to cool the bearing bush, and discharging cooling water into the outer pipe.
3.2.2 opening a cooling water main valve of a wet grinding machine bearing bush and cooling water inlet valves of front and rear bearing bushes, and controlling the flow to be 100-200L/h.
3.2.3 starting the bearing bush circulating oil pump, and controlling the opening degree to be 90%.
3.2.4 open dispersant reservoir inlet and outlet valves, notify chemical configuration post to feed to reservoir.
3.2.5 the wet grinding host is started to observe the current and oil temperature of the host.
3.2.6 according to the production task, calculating the flow of the desalted water and the dispersing agent, wherein the weight ratio of the ceramic balls to the grinding materials to the water is 20:6:5, and the loading capacity of the ball mill is 2/3-4/5 of the effective volume of the cylinder.
3.2.7 open the desalted and dispersant feed valves and then adjust the desalted and dispersant flow to the desired flow on the computer DCS operating interface.
3.2.8 starting the star feeder in DCS system, setting the HZ number of the rolling mill according to production task, weighing the rolling mill and interlocking with the screw, automatically adjusting the HZ number, controlling the weighing of the rolling mill to 80 + -10 Kg, and observing whether the feeding amount is normal on the screw observation port.
3.2.9 observing whether the operation of the feed inlet, the discharge outlet and the vibrating screen of the wet grinder is normal or not and whether the leakage of the material exists or not, sampling and detecting the concentration, the pH value, the 325-mesh screen residue and the content of SiO2 of the slurry after discharging for one hour, and adjusting the flow of the desalted water and the dispersing agent according to the detection result.
3.2.10 when the liquid level of the wet grinding buffer tank submerges the stirring paddle, stirring is started.
3.2.11 when the liquid level reaches the buffer tank one third position, the sand mill feed is prepared.
3.2.12 when the liquid level is too low, the sanding is informed, the feeding of the sanding is stopped, and the outlet valve of the buffer tank is closed. And when the liquid level is too high and the subsequent process cannot produce, stopping the wet grinder for a while according to normal stop.
3.2.13 the production process comprises sampling and analyzing according to the regulations, and recording carefully, wherein the recording content comprises the surplus of materials discharged from the ball mill every day, the current and the weight of the porcelain ball. (the feed of desalted water, dispersant, materials was operated in DCS, other manual operations)
The following table (table 3) is a statistical table of 8 consecutive days:
TABLE 3 comparison table of the influence of the ceramic ball variety on the grinding efficiency and the ceramic ball abrasion
The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and should not be used to limit the scope of the present invention, but all the insubstantial modifications or changes made within the spirit and scope of the main design of the present invention, which still solve the technical problems consistent with the present invention, should be included in the scope of the present invention.
Claims (4)
1. An improved method for improving wet grinding efficiency and reducing abrasion is characterized in that alumina ceramic balls with the models of phi 8, phi 10 and phi 14 are adopted to participate in wet grinding simultaneously, and the mass ratio of the alumina ceramic balls with the models of phi 8, phi 10 and phi 14 is 3:4: 3.
2. The improved method for improving wet grinding efficiency and reducing abrasion as claimed in claim 1, wherein said three types of porcelain balls of phi 8, phi 10 and phi 14 are Pingxiang medium Europe porcelain balls.
3. An improved method for improving wet milling efficiency and reducing attrition as claimed in claim 1 wherein the weight ratio of porcelain balls, milling material, water during the wet milling process is 20:6: 5.
4. An improved method for improving wet grinding efficiency and reducing abrasion as claimed in claim 1, wherein the loading capacity of the ball mill during the wet grinding process is 2/3-4/5 of the effective volume of the cylinder.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114433308A (en) * | 2021-12-31 | 2022-05-06 | 龙佰襄阳钛业有限公司 | Improved method for improving wet grinding capacity and reducing energy consumption |
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| JPS63258654A (en) * | 1987-04-15 | 1988-10-26 | 太平洋セメント株式会社 | Crushing system |
| CN105964346A (en) * | 2016-03-18 | 2016-09-28 | 安徽工程大学 | Visualization method for quantitative gradation technology of ball-milling equipment's milling ball |
| CN106391221A (en) * | 2016-11-18 | 2017-02-15 | 福州恒裕陶瓷有限公司 | Ball mill for grinding ceramic glaze |
| CN110538701A (en) * | 2019-09-11 | 2019-12-06 | 福州沐品润科技发展有限公司 | ball stone proportioning method and technology of ball mill for grinding ceramic glaze |
| CN110586262A (en) * | 2019-09-19 | 2019-12-20 | 山东天汇研磨耐磨技术开发有限公司 | Controllable method for installing alumina grinding medium for ball mill |
| CN111450944A (en) * | 2020-03-31 | 2020-07-28 | 佛山市恒益环保建材有限公司 | Grinding process of autoclaved aerated concrete slurry |
| CN111881582A (en) * | 2020-07-29 | 2020-11-03 | 武汉科技大学 | Method for selecting ball diameter and gradation of grinding ball of horizontal stirring mill |
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2020
- 2020-12-17 CN CN202011513573.6A patent/CN112718134A/en active Pending
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|---|---|---|---|---|
| JPS63258654A (en) * | 1987-04-15 | 1988-10-26 | 太平洋セメント株式会社 | Crushing system |
| CN105964346A (en) * | 2016-03-18 | 2016-09-28 | 安徽工程大学 | Visualization method for quantitative gradation technology of ball-milling equipment's milling ball |
| CN106391221A (en) * | 2016-11-18 | 2017-02-15 | 福州恒裕陶瓷有限公司 | Ball mill for grinding ceramic glaze |
| CN110538701A (en) * | 2019-09-11 | 2019-12-06 | 福州沐品润科技发展有限公司 | ball stone proportioning method and technology of ball mill for grinding ceramic glaze |
| CN110586262A (en) * | 2019-09-19 | 2019-12-20 | 山东天汇研磨耐磨技术开发有限公司 | Controllable method for installing alumina grinding medium for ball mill |
| CN111450944A (en) * | 2020-03-31 | 2020-07-28 | 佛山市恒益环保建材有限公司 | Grinding process of autoclaved aerated concrete slurry |
| CN111881582A (en) * | 2020-07-29 | 2020-11-03 | 武汉科技大学 | Method for selecting ball diameter and gradation of grinding ball of horizontal stirring mill |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114433308A (en) * | 2021-12-31 | 2022-05-06 | 龙佰襄阳钛业有限公司 | Improved method for improving wet grinding capacity and reducing energy consumption |
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Address after: 441500 No.1 Bianhe Road, Chengguan Town, Nanzhang County, Xiangyang City, Hubei Province Applicant after: Longbai Xiangyang Titanium Industry Co.,Ltd. Address before: 441500 No.1 Bianhe Road, Chengguan Town, Nanzhang County, Xiangyang City, Hubei Province Applicant before: XIANGYANG LOMON TITANIUM INDUSTRY Co.,Ltd. |
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Application publication date: 20210430 |