Rubber composition, preparation method thereof and application of rubber composition as rubber lining plate of ball mill

Abstract

The invention belongs to the technical field of mineral processing equipment, and particularly relates to a rubber composition, a preparation method thereof and application of the rubber composition as a rubber lining plate of a ball mill. The rubber composition provided by the invention comprises 100 parts of rubber, 40-80 parts of a reinforcing system, 1.5-4 parts of an anti-aging system, 2-6 parts of a vulcanization system, 3-8 parts of an activation system and 4-11 parts of other auxiliary agents, the rubber comprises natural rubber and butadiene rubber; the reinforcing system comprises medium super wear-resistant carbon black and high wear-resistant carbon black; the anti-aging system comprises an anti-aging agent and paraffin; the vulcanization system comprises sulfur and an accelerant; the activation system comprises zinc oxide and stearic acid; the other auxiliary agents comprise a plasticizer and a tackifier. The wear resistance, impact resistance and corrosion resistance of the rubber composition as the rubber lining plate of the ball mill can be remarkably improved, the service life of the rubber composition can be remarkably prolonged, the shutdown maintenance frequency in the production process is reduced, and the overall production efficiency and economic benefits are improved.

Description

Technical Field

[0001] The invention belongs to the technical field of mineral processing equipment, and in particular relates to a rubber composition and a preparation method thereof and an application thereof as a rubber lining plate of a ball mill. Background Art

[0002] Ball mill is the key equipment for ore crushing and grinding. Figure 1 As shown in the figure, the rubber lining inside it bears the impact, wear and corrosion of ore particles for a long time, which is one of the key factors affecting the performance and service life of ball mill equipment.

[0003] Although the traditional rubber lining used in the ball mill has a certain degree of wear resistance, it is prone to wear and cracking under extreme working conditions, resulting in the need for frequent replacement, which increases production costs. Summary of the invention

[0004] The object of the present invention is to provide a rubber composition and a preparation method thereof and an application thereof as a rubber lining of a ball mill. The rubber composition provided by the present invention has excellent wear resistance, impact resistance and corrosion resistance. As a rubber lining of a ball mill, it can extend the service life of the rubber lining, reduce the frequency of shutdown maintenance during the production process, and improve the overall production efficiency and economic benefits.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] The present invention provides a rubber composition, comprising the following raw materials in parts by weight:

[0007] 100 parts of rubber, 40-80 parts of reinforcing system, 1.5-4 parts of anti-aging system, 2-6 parts of vulcanizing system, 3-8 parts of activating system, 4-11 parts of other additives;

[0008] The rubber includes natural rubber and butadiene rubber;

[0009] The reinforcement system includes medium-super wear-resistant carbon black and high wear-resistant carbon black;

[0010] The anti-aging system includes an antioxidant and paraffin;

[0011] The vulcanization system includes sulfur and an accelerator;

[0012] The activation system includes zinc oxide and stearic acid;

[0013] The other auxiliary agents include plasticizers and tackifiers.

[0014] Preferably, the mass ratio of the natural rubber to the butadiene rubber is (40-70):(30-60).

[0015] Preferably, the mass ratio of the medium super wear-resistant carbon black to the high wear-resistant carbon black is (20-40): (20-40).

[0016] Preferably, the antioxidant includes antioxidant 4010 and antioxidant RD; the mass ratio of the antioxidant 4010, antioxidant RD and paraffin is (0.5-1): (0.5-2): (0.5-1).

[0017] Preferably, the accelerator is accelerator NOBS; the mass ratio of sulfur to accelerator is (1-3): (1-3).

[0018] Preferably, the mass ratio of zinc oxide to stearic acid is (2-5):(1-3).

[0019] Preferably, the plasticizer is engine oil; the tackifier is coumarone resin; and the mass ratio of the plasticizer to the tackifier is (2-5):(1-3).

[0020] The present invention provides a method for preparing the rubber composition described in the above technical solution, comprising the following steps:

[0021] The rubber is plasticized to obtain plasticized rubber;

[0022] The plasticized rubber, the reinforcement system, the anti-aging system, the activation system and other additives are subjected to internal mixing to obtain an internal mixing rubber material;

[0023] The mixed rubber material and the vulcanization system are subjected to open mixing to obtain an open mixing rubber sheet;

[0024] The open-mixed rubber sheet is placed in a mold for vulcanization molding to obtain the rubber composition.

[0025] Preferably, the temperature of the banburying is 60-80°C;

[0026] The vulcanization molding temperature is 140-145° C., the time is 30-40 min, and the pressure is 0.3-0.4 MPa.

[0027] The present invention provides the use of the rubber composition described in the above technical solution or the rubber composition prepared by the preparation method described in the above technical solution as a rubber lining of a ball mill.

[0028] The invention provides a rubber composition, comprising the following raw materials in parts by mass: 100 parts of rubber, 40-80 parts of a reinforcing system, 1.5-4 parts of an anti-aging system, 2-6 parts of a vulcanizing system, 3-8 parts of an activating system, and 4-11 parts of other additives; the rubber comprises natural rubber and butadiene rubber; the reinforcing system comprises medium-super wear-resistant carbon black and high wear-resistant carbon black; the anti-aging system comprises an antioxidant and paraffin; the vulcanizing system comprises sulfur and an accelerator; the activating system comprises zinc oxide and stearic acid; and the other additives comprise a plasticizer and a tackifier. The present invention adopts natural rubber and cis-1,4-butadiene rubber and uses them together, and under the condition that the rubber elasticity is not lost, the rubber wear resistance is improved as much as possible to balance the wear resistance, elasticity and processing performance of the rubber composition; the present invention adopts medium super wear-resistant carbon black and high wear-resistant carbon black and uses them together, while improving the strength and toughness of the rubber composition; the present invention adopts antioxidant and paraffin and uses them together, and can effectively prevent the rubber composition from aging under light and high temperature; the present invention adopts sulfur, accelerator, zinc oxide and stearic acid and uses them together, optimizes the cross-linked network structure of the rubber composition, and improves the tear resistance and fatigue resistance of the rubber composition; the present invention adopts other auxiliary agents to improve the processing performance and finished product appearance of the rubber composition. In summary, the formula of the rubber composition provided by the present invention can significantly improve the wear resistance, impact resistance, corrosion resistance and service life of the rubber composition as a ball mill rubber liner by accurately proportioning the above-mentioned raw materials, thereby reducing the frequency of downtime maintenance in the production process, and improving overall production efficiency and economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a partial schematic diagram of the cross-sectional structure of the ball mill;

[0030] In the figure: 1 is a rubber lining, 2 is a lifting bar, 3 is a bolt, and 4 is a ball mill cylinder. DETAILED DESCRIPTION

[0031] The present invention provides a rubber composition, comprising the following raw materials in parts by weight:

[0032] 100 parts of rubber, 40-80 parts of reinforcing system, 1.5-4 parts of anti-aging system, 2-6 parts of vulcanizing system, 3-8 parts of activating system, 4-11 parts of other additives;

[0033] The rubber includes natural rubber and butadiene rubber;

[0034] The reinforcement system includes medium-super wear-resistant carbon black and high wear-resistant carbon black;

[0035] The anti-aging system includes an antioxidant and paraffin;

[0036] The vulcanization system includes sulfur and an accelerator;

[0037] The activation system includes zinc oxide and stearic acid;

[0038] The other auxiliary agents include plasticizers and tackifiers.

[0039] In the present invention, unless otherwise specified, all preparation raw materials / components are commercially available products well known to those skilled in the art.

[0040] In parts by mass, the raw materials for preparing the rubber composition provided by the present invention include 100 parts of rubber. In the present invention, the rubber includes natural rubber and butadiene rubber. The mass ratio of the natural rubber to butadiene rubber is preferably (40-70): (30-60), more preferably (55-70): (30-45), and specifically 60:40, 70:30 or 55:45 in the embodiment. The present invention uses natural rubber and butadiene rubber in combination, and controls the mass ratio of natural rubber and butadiene rubber, which can improve the wear resistance of the rubber as much as possible while ensuring that the elasticity of the rubber is not lost, and further balance the wear resistance, elasticity and processing performance of the rubber composition.

[0041] In a specific embodiment of the present invention, the natural rubber is purchased from Zhonglian Rubber Co., Ltd. The butadiene rubber is purchased from Hunan Yizheng Chemical Co., Ltd.

[0042] Based on the mass fraction of the rubber, the raw materials for preparing the rubber composition provided by the present invention include 40 to 80 parts of a reinforcement system, specifically 60 parts, 55 parts or 70 parts in the embodiment. In the present invention, the reinforcement system includes medium-super wear-resistant carbon black and high wear-resistant carbon black. The mass ratio of the medium-super wear-resistant carbon black and the high wear-resistant carbon black is preferably (20 to 40): (20 to 40), more preferably (30 to 40): (25 to 30), specifically 35:25, 30:25 or 40:30 in the embodiment. The present invention uses medium-super wear-resistant carbon black and high wear-resistant carbon black in combination, and controls the mass ratio of the medium-super wear-resistant carbon black and the high wear-resistant carbon black, which can further improve the strength and toughness of the rubber composition.

[0043] In a specific embodiment of the present invention, the model of the medium-super wear-resistant carbon black is N220, and the model of the high wear-resistant carbon black is N330.

[0044] In the present invention, the high wear-resistant carbon black has similar performance to the medium and super wear-resistant carbon black, and has better processing performance than the medium and super wear-resistant carbon black. The high wear-resistant carbon black is easily dispersed in the rubber, has low heat generation, and the surface of the semi-finished product pressed out of the rubber is smooth; the vulcanized rubber has good wear resistance, high tensile stress, small permanent deformation, and good aging resistance.

[0045] Based on the mass fraction of the rubber, the raw materials for preparing the rubber composition provided by the present invention include 1.5 to 4 parts of an anti-aging system, specifically 2.5 parts or 3 parts in the embodiment. In the present invention, the anti-aging system includes an antioxidant and paraffin. The antioxidant preferably includes antioxidant 4010 and antioxidant RD; the mass ratio of the antioxidant 4010, antioxidant RD and paraffin is preferably (0.5 to 1): (0.5 to 2): (0.5 to 1), more preferably 1: 1: (0.5 to 1), specifically 1: 1: 0.5 or 1: 1: 1 in the embodiment. The present invention uses antioxidant 4010, antioxidant RD and paraffin in combination, and controls the mass ratio of the three, which can further effectively prevent the rubber composition from aging under light and high temperature, and improve its service life as a rubber liner of a ball mill.

[0046] In order to make the aging resistance of rubber products reach the most ideal level, the present invention adopts antioxidant 4010, antioxidant RD and paraffin in combination, which can not only fully utilize the synergistic benefits of the antioxidants in combination and improve the protective efficiency, but also avoid the frosting phenomenon caused by the large amount of antioxidants when a single antioxidant is used; at the same time, the combination can solve the protection problem of multi-factor aging.

[0047] Based on the mass fraction of the rubber, the raw materials for preparing the rubber composition provided by the present invention include 2 to 6 parts of a vulcanization system, specifically 3 parts or 2.2 parts in the embodiment. In the present invention, the vulcanization system includes sulfur and an accelerator. The accelerator is preferably accelerator NOBS; the mass ratio of the sulfur to the accelerator is preferably (1 to 3): (1 to 3), preferably (1.2 to 1.5): (1 to 1.5), specifically 1.5: 1.5 or 1.2: 1 in the embodiment.

[0048] Based on the mass fraction of the rubber, the raw materials for preparing the rubber composition provided by the present invention include 3 to 8 parts of the activation system, and specifically 7 parts in the embodiment. In the present invention, the activation system includes zinc oxide and stearic acid. The mass ratio of zinc oxide to stearic acid is preferably (2 to 5): (1 to 3), preferably (4 to 5): (2 to 3), and specifically 5:2 or 4:3 in the embodiment.

[0049] The present invention uses sulfur, an accelerator, zinc oxide and stearic acid in combination, and further controls the mass ratio of the four, which can further optimize the cross-linked network structure of the rubber composition and improve the tear resistance and fatigue resistance of the rubber composition.

[0050] During the vulcanization process, zinc oxide can react with accelerators, sulfur, stearic acid, rubber macromolecular chains and corresponding intermediates. As a vulcanization activator, zinc oxide mainly has an important influence on the formation speed, type and number of cross-linking bonds in the vulcanization process, thereby improving the degree of cross-linking of the vulcanized rubber.

[0051] Based on the mass fraction of the rubber, the raw materials for preparing the rubber composition provided by the present invention include 4 to 11 parts of other additives, specifically 5 or 6 parts in the embodiment. In the present invention, the other additives include plasticizers and tackifiers. The plasticizer is preferably engine oil; the tackifier is preferably coumarone resin; the mass ratio of the plasticizer to the tackifier is (2 to 5): (1 to 3), preferably (3 to 4): (2 to 3), specifically 3:2, 3:3 or 4:2 in the embodiment.

[0052] In the present invention, the relative density of the coumarone resin is 1.05 to 1.15 g / cm 3 , softening point is 75-135℃, pH value (acidometer method) is 5-9.

[0053] The rubber composition provided by the present invention preferably comprises the following raw materials in parts by weight: 40 to 70 parts of natural rubber, 30 to 50 parts of butadiene rubber, 2 to 5 parts of zinc oxide, 1 to 3 parts of stearic acid, 0.5 to 1 part of antioxidant 4010, 0.5 to 2 parts of antioxidant RD, 0.5 to 1 part of paraffin, 2 to 5 parts of engine oil, 2 to 3 parts of coumarone resin, 20 to 40 parts of medium-super wear-resistant carbon black, 20 to 40 parts of high wear-resistant carbon black, 1 to 3 parts of accelerator NOBS, and 1 to 3 parts of sulfur.

[0054] The rubber composition provided by the present invention more preferably includes the following raw materials in parts by weight: 55-70 parts of natural rubber, 30-45 parts of butadiene rubber, 4-5 parts of zinc oxide, 2-3 parts of stearic acid, 1 part of antioxidant 4010, 1 part of antioxidant RD, 0.5-1 part of paraffin, 3-4 parts of engine oil, 2-3 parts of coumarone resin, 30-40 parts of medium-super wear-resistant carbon black, 25-30 parts of high wear-resistant carbon black, 1-1.5 parts of accelerator NOBS, and 1.2-1.5 parts of sulfur.

[0055] As a specific embodiment of the present invention, the rubber composition includes the following raw materials in parts by mass: 60 parts of natural rubber, 40 parts of butadiene rubber, 5 parts of zinc oxide, 2 parts of stearic acid, 1 part of antioxidant 4010, 1 part of antioxidant RD, 0.5 part of paraffin, 3 parts of engine oil, 2 parts of coumarone resin, 35 parts of medium-super wear-resistant carbon black, 25 parts of high wear-resistant carbon black, 1.5 parts of accelerator NOBS, and 1.5 parts of sulfur.

[0056] As a specific embodiment of the present invention, the rubber composition includes the following raw materials in parts by mass: 70 parts of natural rubber, 30 parts of butadiene rubber, 4 parts of zinc oxide, 3 parts of stearic acid, 1 part of antioxidant 4010, 1 part of antioxidant RD, 1 part of paraffin, 3 parts of engine oil, 3 parts of coumarone resin, 30 parts of medium-super wear-resistant carbon black, 25 parts of high wear-resistant carbon black, 1 part of accelerator NOBS, and 1.2 parts of sulfur.

[0057] As a specific embodiment of the present invention, the rubber composition includes the following raw materials in parts by weight: 55 parts of natural rubber, 45 parts of butadiene rubber, 5 parts of zinc oxide, 2 parts of stearic acid, 1 part of antioxidant 4010, 1 part of antioxidant RD, 1 part of paraffin, 4 parts of engine oil, 2 parts of coumarone resin, 40 parts of medium-super wear-resistant carbon black, 30 parts of high wear-resistant carbon black, 1.5 parts of accelerator NOBS, and 1.5 parts of sulfur.

[0058] The present invention provides a method for preparing the rubber composition described in the above technical solution, comprising the following steps:

[0059] The rubber is plasticized to obtain plasticized rubber;

[0060] The plasticized rubber, the reinforcement system, the anti-aging system, the activation system and other additives are subjected to internal mixing to obtain an internal mixing rubber material;

[0061] The mixed rubber material and the vulcanization system are subjected to open mixing to obtain an open mixing rubber sheet;

[0062] The open-mixed rubber sheet is placed in a mold for vulcanization molding to obtain the rubber composition.

[0063] The present invention plasticizes the rubber to obtain plasticized rubber. In the present invention, the plasticization is carried out in an open mill, and the specific implementation process of the plasticization is preferably: the natural rubber is sequentially broken and the first thin pass is carried out, and then the second thin pass is carried out after adding butadiene rubber, and finally the thick roller is calendered and rolled down to obtain the plasticized rubber. The breaking of the rubber is preferably carried out under the condition of a roller spacing of 0.7 to 1.0 mm, the roller spacing of the first thin pass is preferably 0.3 to 0.5 mm, and the number of the first thin pass is preferably 5 to 7 times. The number of the second thin pass is preferably 3 to 4 times. The plasticity of the plasticized rubber is preferably 0.45±0.05.

[0064] After obtaining the plasticized rubber, the present invention performs banburying on the plasticized rubber, the reinforcement system, the anti-aging system, the activation system and other additives to obtain a banburying rubber compound. In the present invention, the banburying is preferably performed in a banburying mixer. The banburying temperature is preferably 60 to 80° C., the time is preferably 10 to 15 minutes, the banburying pressure is preferably 3.5 to 5 MPa, and the pressurizing time of the banburying is preferably 6 to 8 minutes.

[0065] After obtaining the internal mixing rubber compound, the present invention performs open mixing on the internal mixing rubber compound and the vulcanization system to obtain an open mixing rubber sheet. In the present invention, the open mixing is performed in an open mixing mill. The open mixing preferably includes sequentially performing thin pass and discharging a sheet, and the number of the thin pass is preferably 2 to 3 times. The roller distance of the thin pass is preferably 1 to 1.8 mm.

[0066] After obtaining the open-mixed rubber sheet, the present invention places the open-mixed rubber sheet in a mold for vulcanization molding to obtain the rubber composition. The vulcanization molding is performed in a flat vulcanizer, and the vulcanization molding temperature is preferably 140-145° C., the time is preferably 30-40 minutes, and the pressure is preferably 0.3-0.4 MPa.

[0067] The present invention provides the use of the rubber composition described in the above technical solution or the rubber composition prepared by the preparation method described in the above technical solution as a rubber lining of a ball mill.

[0068] In the present invention, after the rubber composition is obtained by vulcanization molding, the present invention preferably further comprises trimming and inspecting the rubber composition in sequence, and then installing it in a ball mill.

[0069] In order to further illustrate the present invention, the technical solutions provided by the present invention are described in detail below in conjunction with embodiments, but they should not be construed as limiting the protection scope of the present invention.

[0070] Examples 1 to 3

[0071] The raw materials and amounts (parts by mass) used in the rubber compositions provided in Examples 1 to 3 are shown in Table 1.

[0072] Table 1 Preparation raw materials and amounts (parts by mass) of the rubber compositions provided in Examples 1 to 3

[0073]

[0074]

[0075] The preparation method of the rubber composition provided in Examples 1 to 3 specifically comprises the following steps:

[0076] 1) Ingredients: Accurately weigh the various materials listed in Table 1 by weight using an electronic scale;

[0077] 2) Plastication: Add the natural rubber material into the open mixing mill, break the rubber at a roller distance of 0.7-1mm, then thin pass 7 times at a roller distance of 0.3-0.5mm, add butadiene rubber, and thin pass 4 times after averaging, calender with a thick roller and roll down to obtain a plasticized film roll, the plasticity of the plasticized film roll reaches 0.45±0.05.

[0078] 3) Internal mixing: Add zinc oxide, stearic acid, antioxidant 4010, antioxidant RD, paraffin, engine oil, coumarone, medium-super wear-resistant carbon black, high wear-resistant carbon black and plasticized film into an internal mixer, pressurize for 6 to 8 minutes, and discharge (sweep the powder once in the middle), wherein the internal mixing temperature is 60 to 80°C and the time is 15 minutes.

[0079] 4) Open mixing and sheeting: Add accelerator NOBS and sulfur to the rubber compound after internal mixing on an open mixing mill, pass it through three times (2 triangular bags), with a roller distance of 1 to 1.8 mm, and roll it off with a thick roller to obtain a film.

[0080] 5) Vulcanization molding: Cut the film into the required shape, put it into the mold, and vulcanize it in the vulcanizer. Vulcanization molding conditions: 145℃, 40min, 0.4MPa.

[0081] 6) Post-processing: After the vulcanized product is trimmed and inspected, it can be used for ball mill installation.

[0082] The rubber compositions prepared in Examples 1 to 3 were subjected to performance tests. The test methods and data are shown in Table 2.

[0083] Table 2 Performance test results of the rubber compositions prepared in Examples 1 to 3

[0084]

[0085]

[0086] It can be seen from Table 2 that the rubber composition provided in Examples 1 to 3 of the present invention is used as a rubber lining for a ball mill. After testing, the formula has high tensile strength, good wear resistance, and moderate hardness, which can replace the manganese steel lining and ordinary rubber lining of the ball mill, improve the wear resistance of the lining, extend the service life, reduce the dead weight of the ball mill and the weight and noise of the lining, and achieve the purpose of energy saving and consumption reduction, improve economic benefits, and reduce the labor intensity of workers. The rubber has good aging resistance and rebound performance. The performance of the rubber is not easy to deteriorate during use, which improves the safety and service life of the rubber lining of the ball mill. The specific performance is shown in Table 2, and the position of the rubber lining of the present invention in the ball mill is shown in Table 2. Figure 1 .

[0087] Comparative Examples 1-2

[0088] The raw materials and amounts (parts by mass) used in the rubber compositions of Comparative Examples 1 to 2 are shown in Table 3.

[0089] Table 3 Preparation raw materials and amounts (parts by mass) of the rubber compositions provided in Comparative Examples 1 to 2

[0090]

[0091]

[0092] The preparation method of the rubber composition provided in Comparative Examples 1 to 2 is substantially the same as that of Examples 1 to 3, except that:

[0093] Step 2) in Comparative Example 1) Plastication: Add the natural rubber material into an open mixing mill, break the rubber at a roller distance of 0.7-1 mm, then thin pass 7 times at a roller distance of 0.3-0.5 mm, calender with a thick roller and roll down to obtain a plasticized film roll.

[0094] Step 2) in Comparative Example 2) Plastication: Plastication: Add the butadiene rubber into an open mixing mill, break the rubber at a roller distance of 0.7-1 mm, then thinly pass it 4 times at a roller distance of 0.3-0.5 mm, calender it with a thick roller and roll it down to obtain a plasticized film roll.

[0095] The rubber compositions prepared in Comparative Examples 1 and 2 were subjected to performance tests. The test methods and data are shown in Table 4.

[0096] Table 4 Performance test results of the rubber compositions prepared in Comparative Examples 1 to 2

[0097]

[0098] From the results of Table 2 and Table 4, it can be seen that compared with Example 1, Comparative Example 1 only adds natural rubber, and Comparative Example 2 only adds butadiene rubber. The resulting products have poor elasticity and ductility and lack flexibility.

[0099] It can be seen from the above embodiments that the present invention uses natural rubber and butadiene rubber in combination, and under the condition of ensuring that the rubber elasticity is not lost, the rubber wear resistance is improved as much as possible to balance the wear resistance, elasticity and processing performance of the rubber composition; the present invention uses medium super wear-resistant carbon black and high wear-resistant carbon black in combination, while improving the strength and toughness of the rubber composition; the present invention uses antioxidant and paraffin in combination, which can effectively prevent the rubber composition from aging under light and high temperature; the present invention uses sulfur, accelerator, zinc oxide and stearic acid in combination, optimizes the cross-linked network structure of the rubber composition, and improves the tear resistance and fatigue resistance of the rubber composition; the present invention uses other additives to improve the processing performance and finished product appearance of the rubber composition. In summary, the formula of the rubber composition provided by the present invention can significantly improve the wear resistance, impact resistance, corrosion resistance and service life of the rubber composition as a ball mill rubber liner by accurately proportioning the above-mentioned raw materials, thereby reducing the frequency of downtime maintenance in the production process, and improving overall production efficiency and economic benefits.

[0100] Although the above embodiment describes the present invention in detail, it is only a part of the embodiments of the present invention, not all of the embodiments. Other embodiments can be obtained based on this embodiment without creativity, and these embodiments all fall within the protection scope of the present invention.

Claims

1. A rubber composition, characterized in that: The preparation comprises the following raw materials in parts by weight: 100 parts of rubber, 40-80 parts of reinforcing system, 1.5-4 parts of anti-aging system, 2-6 parts of vulcanizing system, 3-8 parts of activating system, 4-11 parts of other additives; The rubber includes natural rubber and butadiene rubber; The reinforcement system includes medium-super wear-resistant carbon black and high wear-resistant carbon black; The anti-aging system includes an antioxidant and paraffin; The vulcanization system includes sulfur and an accelerator; The activation system includes zinc oxide and stearic acid; The other auxiliary agents include plasticizers and tackifiers.

2. The rubber composition according to claim 1, characterized in that The mass ratio of the natural rubber to the butadiene rubber is (40-70):(30-60).

3. The rubber composition according to claim 1, characterized in that The mass ratio of the medium super wear-resistant carbon black to the high wear-resistant carbon black is (20-40): (20-40).

4. The rubber composition according to claim 1, characterized in that The antioxidant includes antioxidant 4010 and antioxidant RD; the mass ratio of the antioxidant 4010, antioxidant RD and paraffin is (0.5-1): (0.5-2): (0.5-1).

5. The rubber composition according to claim 1, characterized in that The accelerator is accelerator NOBS; the mass ratio of the sulfur to the accelerator is (1-3): (1-3).

6. The rubber composition according to claim 1 or 5, characterized in that: The mass ratio of zinc oxide to stearic acid is (2-5):(1-3).

7. The rubber composition according to claim 1, characterized in that The plasticizer is engine oil; the tackifier is coumarone resin; and the mass ratio of the plasticizer to the tackifier is (2-5):(1-3).

8. The method for preparing the rubber composition according to any one of claims 1 to 7, characterized in that: The following steps are involved: The rubber is plasticized to obtain plasticized rubber; The plasticized rubber, the reinforcement system, the anti-aging system, the activation system and other additives are subjected to internal mixing to obtain an internal mixing rubber material; The mixed rubber material and the vulcanization system are subjected to open mixing to obtain an open mixing rubber sheet; The open-mixed rubber sheet is placed in a mold for vulcanization molding to obtain the rubber composition.

9. The preparation method according to claim 8, characterized in that: The temperature of the banburying is 60-80°C; The vulcanization molding temperature is 140-145° C., the time is 30-40 min, and the pressure is 0.3-0.4 MPa.

10. Use of the rubber composition according to any one of claims 1 to 7 or the rubber composition prepared by the preparation method according to claim 8 or 9 as a rubber lining for a ball mill.

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