CN115820324B - Special lubricating grease for ball mill and preparation method thereof - Google Patents
Special lubricating grease for ball mill and preparation method thereof Download PDFInfo
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- CN115820324B CN115820324B CN202211638826.1A CN202211638826A CN115820324B CN 115820324 B CN115820324 B CN 115820324B CN 202211638826 A CN202211638826 A CN 202211638826A CN 115820324 B CN115820324 B CN 115820324B
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- 239000004519 grease Substances 0.000 title claims abstract description 49
- 230000001050 lubricating effect Effects 0.000 title claims abstract description 26
- 238000002360 preparation method Methods 0.000 title claims description 11
- 238000000498 ball milling Methods 0.000 title description 2
- 239000002199 base oil Substances 0.000 claims abstract description 63
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 45
- 239000007787 solid Substances 0.000 claims abstract description 28
- 239000000203 mixture Substances 0.000 claims abstract description 25
- 239000000344 soap Substances 0.000 claims abstract description 22
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 20
- 239000011575 calcium Substances 0.000 claims abstract description 20
- 239000007788 liquid Substances 0.000 claims abstract description 17
- 239000012188 paraffin wax Substances 0.000 claims abstract description 13
- 229910052751 metal Inorganic materials 0.000 claims abstract description 11
- 239000002184 metal Substances 0.000 claims abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000010439 graphite Substances 0.000 claims abstract description 7
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 7
- 239000003112 inhibitor Substances 0.000 claims abstract description 7
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims abstract description 7
- CWQXQMHSOZUFJS-UHFFFAOYSA-N molybdenum disulfide Chemical compound S=[Mo]=S CWQXQMHSOZUFJS-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052982 molybdenum disulfide Inorganic materials 0.000 claims abstract description 6
- 238000002156 mixing Methods 0.000 claims description 24
- 238000001914 filtration Methods 0.000 claims description 21
- 238000010438 heat treatment Methods 0.000 claims description 16
- 239000000463 material Substances 0.000 claims description 14
- 238000003756 stirring Methods 0.000 claims description 14
- 238000007872 degassing Methods 0.000 claims description 12
- 239000006185 dispersion Substances 0.000 claims description 10
- 238000004806 packaging method and process Methods 0.000 claims description 8
- 229920002367 Polyisobutene Polymers 0.000 claims description 6
- VQTUBCCKSQIDNK-UHFFFAOYSA-N Isobutene Chemical group CC(C)=C VQTUBCCKSQIDNK-UHFFFAOYSA-N 0.000 claims description 4
- WSFQLUVWDKCYSW-UHFFFAOYSA-M sodium;2-hydroxy-3-morpholin-4-ylpropane-1-sulfonate Chemical group [Na+].[O-]S(=O)(=O)CC(O)CN1CCOCC1 WSFQLUVWDKCYSW-UHFFFAOYSA-M 0.000 claims description 4
- 238000005496 tempering Methods 0.000 claims description 4
- UGUHFDPGDQDVGX-UHFFFAOYSA-N 1,2,3-thiadiazole Chemical group C1=CSN=N1 UGUHFDPGDQDVGX-UHFFFAOYSA-N 0.000 claims description 3
- 239000013556 antirust agent Substances 0.000 claims description 3
- 230000035515 penetration Effects 0.000 claims description 3
- 239000006078 metal deactivator Substances 0.000 claims description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 abstract description 14
- 229910000019 calcium carbonate Inorganic materials 0.000 abstract description 7
- 238000005086 pumping Methods 0.000 abstract description 7
- 239000002245 particle Substances 0.000 abstract description 5
- 239000002131 composite material Substances 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 22
- 238000000034 method Methods 0.000 description 20
- 230000008569 process Effects 0.000 description 18
- 239000000654 additive Substances 0.000 description 16
- 238000005461 lubrication Methods 0.000 description 9
- 230000000996 additive effect Effects 0.000 description 7
- 239000002904 solvent Substances 0.000 description 7
- 238000013461 design Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000000314 lubricant Substances 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 3
- 239000013538 functional additive Substances 0.000 description 3
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 239000007909 solid dosage form Substances 0.000 description 2
- VSVUSPDEPGDGSO-UHFFFAOYSA-N [S].CC(C)=C Chemical compound [S].CC(C)=C VSVUSPDEPGDGSO-UHFFFAOYSA-N 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000013329 compounding Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
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- 239000000428 dust Substances 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 150000004867 thiadiazoles Chemical class 0.000 description 1
Landscapes
- Lubricants (AREA)
Abstract
The invention relates to special lubricating grease for a ball mill, which comprises the following components in parts by weight: base oil: 14.6 to 58.0 portions; base grease: 25.0 to 45.0 parts; solid extreme pressure agent 1:1.0 to 3.0 parts; solid extreme pressure agent 2:2.0 to 3.0 parts; metal passivating agent: 0.1 to 0.3 part; liquid extreme pressure agent: 1.5 to 3.5 portions; rust inhibitor: 0.4 to 0.6 part; tackifier: 10.0 to 30.0 parts; the base oil is a mixture of paraffin-based base oil 150BS and naphthenic base oil a 1020; the base grease is anhydrous calcium soap; the solid extreme pressure agent 1 is a mixture of calcium carbonate with a particle size of 2-3 microns and less than 0.1 microns. The solid extreme pressure agent 2 is one or a mixture of two of colloidal graphite and colloidal molybdenum disulfide. The invention is a composite product with higher reliability, improves the low-temperature pumping performance, improves the temperature rise of tooth surfaces, has better environmental protection performance and better cost performance, and prolongs the service life of the open gear of the ball mill.
Description
Technical Field
The invention relates to the technical field of lubricating grease, in particular to special lubricating grease for a ball mill and a preparation method thereof.
Background
The special lubricating grease for the ball mill is used for lubricating low-speed, heavy-load and impact-load open gears. The open gear can transmit high torque, and the tooth surface is subjected to extremely high stress during starting, running and stopping, and is in a mixed friction state. The lubrication effect of the open gear of the ball mill is closely related to the type of lubricant, a lubrication system, design, processing, materials and assembly conditions of the gear. Common types of open gear lubricants include high viscosity oil type, solid dosage forms, compound type, solvent dilution type, and the like, and from the perspective of lubrication, a proper lubricant and a reasonable lubrication mode provide effective lubrication protection, and are one of methods for prolonging the service life of open gears. The open gear of the ball mill often has various problems in the running process, such as lubricant low-temperature pumping problem, environmental pollution problem, tooth surface temperature rise, pitting corrosion and the like, due to the large size of the gear, high tooth surface roughness and harsh working environment (such as dust, ore pulp and impact load), so that the service life of the gear equipment is reduced.
Disclosure of Invention
The invention aims to solve the technical problem of providing special lubricating grease for a ball mill, which is suitable for lubricating open gears of the ball mill. The product has a stable lubricating oil film; excellent high and low temperature flow properties; the lubrication of the tooth surface can be controlled in a proper temperature rise range, and the bearing capacity is good under impact load; good high temperature performance; the service life of the gear can be effectively prolonged.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the special lubricating grease for the ball mill comprises the following components in parts by weight:
base oil: 14.6 to 58.0 portions;
base grease: 25.0 to 45.0 parts;
solid extreme pressure agent 1:1.0 to 3.0 parts;
solid extreme pressure agent 2:2.0 to 3.0 parts;
metal passivating agent: 0.1 to 0.3 part;
liquid extreme pressure agent: 1.5 to 3.5 portions;
rust inhibitor: 0.4 to 0.6 part;
tackifier: 10.0 to 30.0 parts;
the base oil is a mixture of paraffin base oil 150BS and naphthenic base oil A1020, and the kinematic viscosity at 40 ℃ is 900-1000mm 2 /s；
The base grease is anhydrous calcium soap, the base oil in the anhydrous calcium soap component is a mixture of paraffin base oil 150BS and naphthenic base oil A1020, the weight percentage of the base oil is more than or equal to 80%, the drop point of the anhydrous calcium soap is more than 140 ℃, and the working cone penetration is required to be 220-250 (0.1 mm).
The solid extreme pressure agent 1 is prepared by mixing the following components in percentage by weight: 2 weight ratio of the mixture.
The solid extreme pressure agent 2 is one or a mixture of two of colloidal graphite and colloidal molybdenum disulfide.
The metal deactivator is a thiadiazole derivative.
The liquid extreme pressure agent is sulfurized isobutylene.
The rust inhibitor is zinc naphthenate.
The tackifier is polyisobutylene.
A preparation method of special lubricating grease for a ball mill comprises the following steps:
1) Base oil preparation: according to the following steps of 1:1 part by weight of paraffin base oil 150BS and naphthenic base oil A1020 are respectively filtered to a blending kettle through 200 meshes, heated to 40-45 ℃ and stirred and mixed for 50-60 minutes for standby;
2) And (3) material dispersion: uniformly dispersing the base grease and the anhydrous calcium soap into the base oil in the step 1) by using a high-speed disperser;
3) Primary heating and tempering: heating the mixed material obtained in the step 2) to 80-90 ℃, sequentially adding the liquid extreme pressure agent, the metal passivating agent and the antirust agent, mixing and stirring, and filtering for 60-90 minutes by 200 meshes;
4) Secondary heating and blending: maintaining the temperature of the mixture obtained in the step 3) at 80-90 ℃, sequentially adding the solid extreme pressure agent 1 and the solid extreme pressure agent 2, mixing and stirring, and filtering for 90-120 minutes by 300 meshes;
5) Heating and blending for three times: maintaining the temperature of the mixed material obtained in the step 4) at 80-90 ℃, adding a tackifier, and circularly stirring for 60-90 minutes without a filter screen;
6) And (5) degassing and packaging: transferring the lubricating grease obtained in the step 5) to a degassing kettle for degassing, filtering and packaging.
Compared with the prior art, the invention has the beneficial effects that:
the invention is a composite product with higher reliability, improves the low-temperature pumping performance, improves the temperature rise of tooth surfaces, has better environmental protection performance and better cost performance, and prolongs the service life of the open gear of the ball mill.
The base oil is selected by compounding high-viscosity paraffin base oil and hydrogenated naphthenic base oil, so that the oil film thickness is ensured, but no solvent is added, and the low-temperature performance is improved from the structure of soap fibers by the combination of the two base oils and anhydrous calcium soap, and the oil film thickness can be ensured. In addition, asphalt oil is used for improving the oil film thickness of a common solvent type product in the industry, and 10% -15% of solvent oil is added for improving the low-temperature performance, so that the solvent type product has the biggest defects that the solvent oil volatilizes along with the increase of temperature during use, so that the environment is polluted, the solvent type product is not suitable for long-term use, and unpredictable damage is caused to human bodies. The two base oils are different in type and different in function, the paraffin base oil ensures that soap fibers are tidy, and the hydrogenated naphthenic oil is better in low-temperature pumping performance, and the final finished product is better in low-temperature pumping performance.
The base grease adopts anhydrous calcium soap, and the base oil used for producing the anhydrous calcium soap is consistent with the base oil used in the application, and is paraffin base oil and hydrogenated naphthenic base oil. The base oil for anhydrous calcium soap production is the same as the base oil of the application, the mutual fusion property is better, and in the grease blending process of the application, the base oil of the application can enter into different positions in soap fibers through different processes. In the using process of the special lubricating grease for the ball mill, proper oil separation is ensured at different temperatures, and additives in the oil are brought out to play a role.
The solid extreme pressure agent 1 is compounded by two kinds of calcium carbonate with different particle sizes, so that the solid extreme pressure agent is stronger and more reliable in bearing capacity under high load according to the requirements of different working conditions, and once pitting occurs on the tooth surface, the two kinds of calcium carbonate can timely fill and remedy pitting parts, thereby avoiding expansion and prolonging the service life of the gear.
In the process design, the on-site pneumatic pump jet type oil feeding mode is fully considered. Whether the state of the lubricating grease is completely uniform is a key factor of whether the lubricating grease can completely reach a lubricating point or not, in order to ensure the absolute uniformity of the lubricating grease, two treatment modes are respectively carried out on the process design, and a high-speed disperser is used for dispersing the base grease so as to ensure the complete uniform dispersion into the base oil; aiming at the dispersion of the liquid agent, a high-mesh filtering mode is adopted, and the filtering time is required to be 60-90 minutes; the solid extreme pressure agent is dispersed in a high-mesh filtering mode, the filtering time is up to 300 meshes, and the filtering time is 90-120 minutes, so that calcium carbonate with different particle sizes is ensured to be uniformly dispersed in the material.
The tackifying effect of the tackifier is fully considered in the process design, a filter screen-free circulating stirring mode is adopted in the post-treatment process, so that the materials are ensured to be uniformly dispersed, the materials are better combined with the base oil and the additive, the viscosity of the whole base oil is improved, and a certain auxiliary effect is achieved in the extreme pressure performance. In the process, the design of each step of working procedure and the raw materials of the formula are complemented each other, and any change of the formula and the process can have a certain influence on the performance of the product.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present invention without making any inventive effort, are intended to fall within the scope of the present invention.
A special lubricating grease for ball mills comprises the following components in parts by weight:
base oil: 14.6 to 58.0 portions; the base oil is a mixture of paraffin base oil 150BS and naphthenic base oil A1020, and the kinematic viscosity at 40 ℃ is 900-1000mm 2 And/s. Good lubrication is maintained and there must be sufficient oil film thickness. The viscosity of the base oil determines the thickness of the oil film, the base oil with high viscosity is selected, the viscosity is higher at high temperature, and meanwhile, the pumping performance at low temperature needs to be ensured.
Base grease: 25.0 to 45.0 parts; the base grease is anhydrous calcium soap of anhydrous calcium base grease, and the working cone penetration degree is as follows: 220-250 (0.1 mm); the anhydrous calcium soap has excellent low-temperature fluidity and mechanical stability. The drop point of the anhydrous calcium soap is more than 150 ℃, and the temperature of the tooth surface of the ball mill during the open gear operation process is not higher than 80 ℃, so that the high-temperature performance of the anhydrous calcium soap completely meets the use requirement and no function is wasted.
Solid extreme pressure agent 1:1.0 to 3.0 parts; the solid extreme pressure agent 1 is prepared by mixing the following components in percentage by weight: 2 weight ratio of the mixture. The two kinds of particle size calcium carbonate are mutually matched when the tooth surfaces of the open gear of the ball mill are meshed, firstly, the respective extreme pressure performance can be exerted when the temperature of the tooth surfaces rises under high load and the oil film becomes thin, and secondly, when the tooth surfaces slightly pitting occurs, the pitting parts are rapidly filled with the calcium carbonate with different particle sizes, so that the pitting expansion is avoided, and the pitting inhibition effect is realized.
Solid extreme pressure agent 2:2.0 to 3.0 parts; the solid extreme pressure agent 2 is colloidal graphite, colloidal molybdenum disulfide or a mixture of the two.
Metal passivating agent: 0.1 to 0.3 part; the metal passivating agent is a thiadiazole derivative, can reduce the activity of metal, reduce the oxidation catalytic action of metal on lubricating oil and inhibit corrosion.
Liquid extreme pressure agent: 1.5 to 3.5 portions; the liquid extreme pressure agent is sulfurized isobutene, has low viscosity and excellent fluidity at low temperature, and can quickly enter the friction surface along with paraffin base oil 150BS with relatively low viscosity, so that equipment can still keep good lubrication at low temperature.
Rust inhibitor: 0.4 to 0.6 part; the rust inhibitor is zinc naphthenate.
Tackifier: 10.0 to 30.0 parts; the tackifier is polyisobutylene PIB2400; by adding tackifier polyisobutene PIB2400, the kinematic viscosity of the base oil at 40 ℃ reaches 1500-3500 mm 2 /s。
A preparation method of special lubricating grease for a ball mill comprises the following steps:
1) Base oil preparation: according to the following steps of 1:1 part by weight of paraffin base oil 150BS and naphthenic base oil A1020 are respectively filtered to a blending kettle through 200 meshes, heated to 40-45 ℃ and stirred and mixed for 50-60 minutes for standby;
2) And (3) material dispersion: uniformly dispersing the metal calcium soap into the base oil in the step 1) by using a high-speed disperser;
the process needs to use a high-speed disperser to uniformly disperse the base grease into the base oil to form a uniform mixture, and the dispersion is poor, so that the pumping performance is affected. The base grease is uniformly dispersed in the oil, and the oil enters the base grease to provide support for the dispersion and adhesion of the solid additive and the liquid additive in the later process.
3) Primary heating and tempering: heating the mixed material obtained in the step 2) to 80-90 ℃, sequentially adding the liquid extreme pressure agent, the metal passivating agent and the antirust agent, mixing and stirring, and filtering for 60-90 minutes by 200 meshes;
the process requires long 200 mesh filtration at 80-90 ℃ in order to improve the adhesion of the liquid additive, dissolve the additive in the paraffinic base 150BS, and retain the grease characteristics as the base enters the base grease.
The purpose of this step is to ensure that the grease is properly split during use and that the additives are released from the oil to function. Fully considers the problem of poor solubility of the high viscosity naphthenic base oil A1020 to additives, in combination with the paraffinic base oil 150BS. The performance of the liquid additive is superior to that of the high-viscosity oil type product.
4) Secondary heating and blending: maintaining the temperature of the mixture obtained in the step 3) at 80-90 ℃, sequentially adding the solid extreme pressure agent 1 and the solid extreme pressure agent 2, mixing and stirring, and filtering for 90-120 minutes by 300 meshes;
the process continues to improve the filtering mesh number and time, and performs accumulated dispersion, so that the efficiency is improved, and the ideal dispersion effect is achieved. The purpose of increasing the filtration mesh again is to disperse the two types of additives in the system in layers, the solid additives should encapsulate the base grease but not the liquid additives. The correct material adding sequence can greatly improve the quality stability of the product, different additives play roles under different working conditions and are matched with each other, the process design fully considers the theory that the composite product cannot deviate from oil lubrication, and when slight load occurs, the basic grease is taken as a sponge body to properly separate oil under different working conditions, and the basic oil carries the liquid additives to play roles so as to avoid the temperature rise of tooth surfaces; when heavy load occurs, the liquid agent cannot bear, and the basic grease carries the solid additive to play a role, so that the pitting of the tooth surface is avoided. The two additives are better matched, and the oil film thickness of the tooth surface is improved to be higher than that of a solid dosage form in the aspects of temperature rise and extreme pressure performance.
5) Heating and blending for three times: maintaining the temperature of the mixture obtained in the step 4) at 80-90 ℃, adding tackifier polyisobutene, and circularly stirring for 60-90 minutes without a filter screen;
the process is not subjected to filtration treatment, only stirring is selected, the original structure of the tackifier needs to be kept from being destroyed, the cofferdam function of the tackifier is performed to fix the whole system, and the functional additive is not allowed to run off when the functional additive needs to act, so that the functional additive cannot act.
6) And (5) degassing and packaging: transferring the lubricating grease obtained in the step (5) to a degassing kettle for degassing, filtering and packaging.
[ example ]
In this example, the weight parts of the components in the grease composition are shown in table 1:
table 1:
in this embodiment, the preparation method of the special lubricating grease for the ball mill comprises the following steps:
1) Base oil preparation: the paraffinic base oil 150BS and naphthenic base oil a1020 were each 200 mesh filtered, 1:1, mixing for standby;
2) And (3) material dispersion: uniformly dispersing anhydrous calcium soap into the mixed base oil in the step 1) by using a high-speed disperser;
3) Primary heating and tempering: heating the mixture obtained in the step 2) to 80-90 ℃, sequentially adding the sulfur isobutene T321, the thiadiazole derivative T561 and the zinc naphthenate, mixing, stirring and filtering;
4) Secondary heating and blending: maintaining the temperature of the mixture obtained in the step 3) at 80-90 ℃, sequentially adding the mixture of calcium carbonate, colloidal graphite and colloidal molybdenum disulfide or the mixture of colloidal graphite or colloidal molybdenum disulfide, mixing, stirring and filtering;
5) Heating and blending for three times: maintaining the temperature of the mixture obtained in the step 4) at 80-90 ℃, adding tackifier polyisobutene PIB2400, and circularly stirring without a filter screen;
6) And (5) degassing and packaging: transferring the lubricating grease obtained in the step (4) to a degassing kettle for degassing, filtering and packaging.
The process parameters of steps 3) to 4) are shown in table 2;
table 2:
product performance test:
the ball mill special lubricating grease prepared in 8 examples is respectively tested and evaluated by adopting the following testing equipment, and the main testing equipment and the testing method are as follows: flow pressure (DIN 50805); sintering load of four-ball machine (SH/T0202).
The test results are shown in the following table:
although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. The special lubricating grease for the ball mill is characterized by comprising the following components in parts by weight:
base oil: 14.6 to 58.0 portions; the base oil is a mixture of paraffin base oil 150BS and naphthenic base oil A1020, and has a kinematic viscosity of 900-1000mm at 40deg.C 2 /s；
Base grease: 25.0 to 45.0 parts; the base grease is anhydrous calcium soap, the base oil in the anhydrous calcium soap component is a mixture of paraffin base oil 150BS and naphthenic base oil A1020, the weight percentage of the base oil is more than or equal to 80 percent, the drop point of the anhydrous calcium soap is more than 140 ℃, and the working cone penetration requirement is 220-250;
solid extreme pressure agent 1:1.0 to 3.0 parts; the solid extreme pressure agent 1 is prepared by mixing the following components in percentage by weight: 2 weight ratio of the mixture;
solid extreme pressure agent 2:2.0 to 3.0 parts; the solid extreme pressure agent 2 is colloidal graphite or a mixture of the colloidal graphite and colloidal molybdenum disulfide;
metal passivating agent: 0.1 to 0.3 part;
liquid extreme pressure agent: 1.5 to 3.5 portions;
rust inhibitor: 0.4 to 0.6 part;
tackifier: 10.0 to 30.0 parts; the tackifier is polyisobutylene;
the preparation method of the special lubricating grease for the ball mill comprises the following steps:
1) Base oil preparation: according to the following steps of 1:1 part by weight of paraffin base oil 150BS and naphthenic base oil A1020 are respectively filtered to a blending kettle through 200 meshes, heated to 40-45 ℃ and stirred and mixed for 50-60 minutes for standby;
2) And (3) material dispersion: uniformly dispersing the base fat anhydrous calcium soap into the base oil in the step 1) by using a high-speed disperser;
3) Primary heating and tempering: heating the mixed material obtained in the step 2) to 80-90 ℃, sequentially adding the liquid extreme pressure agent, the metal passivating agent and the antirust agent, mixing and stirring, and filtering for 60-90 minutes by 200 meshes;
4) Secondary heating and blending: maintaining the temperature of the mixture obtained in the step 3) at 80-90 ℃, sequentially adding the solid extreme pressure agent 1 and the solid extreme pressure agent 2, mixing and stirring, and filtering for 90-120 minutes by 300 meshes;
5) Heating and blending for three times: maintaining the temperature of the mixed material obtained in the step 4) at 80-90 ℃, adding a tackifier, and circularly stirring for 60-90 minutes without a filter screen;
6) And (5) degassing and packaging: transferring the lubricating grease obtained in the step 5) to a degassing kettle for degassing, filtering and packaging.
2. A ball mill specific grease according to claim 1, wherein the metal deactivator is a thiadiazole derivative.
3. A ball mill specific grease according to claim 1, wherein the liquid extreme pressure agent is sulfurized isobutylene.
4. A ball mill specific grease according to claim 1, wherein the rust inhibitor is zinc naphthenate.
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| CN202211638826.1A CN115820324B (en) | 2022-12-20 | 2022-12-20 | Special lubricating grease for ball mill and preparation method thereof |
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| CN202211638826.1A CN115820324B (en) | 2022-12-20 | 2022-12-20 | Special lubricating grease for ball mill and preparation method thereof |
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| CN115820324B true CN115820324B (en) | 2024-01-26 |
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| CN111100743A (en) * | 2019-12-26 | 2020-05-05 | 辽宁海华科技股份有限公司 | Low-temperature long-life extreme pressure lubricating grease and preparation method thereof |
| CN111662767A (en) * | 2020-06-12 | 2020-09-15 | 辽宁海华科技股份有限公司 | Sizing machine lubricating grease and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20090325829A1 (en) * | 2008-06-27 | 2009-12-31 | Cowan Sandra S | Reduced Molybdenum Grease Formulation |
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| CN102839040A (en) * | 2011-06-22 | 2012-12-26 | 中国石油天然气股份有限公司 | Heavy-load self-repairing open gear lubricating grease |
| CN104560267A (en) * | 2013-10-28 | 2015-04-29 | 中国石油化工股份有限公司 | Anhydrous calcium grease and preparation method thereof |
| CN107502419A (en) * | 2017-07-21 | 2017-12-22 | 鞍山海华油脂化学有限公司 | A kind of gear type automobile steering gear lubricant composition |
| CN109135888A (en) * | 2018-08-03 | 2019-01-04 | 统石油化工有限公司 | A kind of complex calcium sulfonate grease and preparation method thereof |
| CN111100743A (en) * | 2019-12-26 | 2020-05-05 | 辽宁海华科技股份有限公司 | Low-temperature long-life extreme pressure lubricating grease and preparation method thereof |
| CN111662767A (en) * | 2020-06-12 | 2020-09-15 | 辽宁海华科技股份有限公司 | Sizing machine lubricating grease and preparation method thereof |
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| CN115820324A (en) | 2023-03-21 |
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