Multifunctional bentonite production system

Abstract

The utility model belongs to the field of bentonite production, and particularly relates to a multifunctional bentonite production system which mainly comprises a raw material shed, a crusher, a pug mill, a dosing machine, a two-stage vacuum extruder, a dryer, a metering belt weigher, a flour mill, an auxiliary bin, a first feeder, a first belt conveyor and an elevator, a feed port of the surge bin is connected with a feed port of the metering belt weigher, a feed port of the auxiliary bin is connected with a feed port of the metering belt weigher, an outlet of the metering belt weigher is connected with a feed port of the flour mill through a second elevator, and an outlet of the flour mill is connected with a feed port of the finished product bin; auxiliary agents stored in the auxiliary agent bin are added according to a production plan so as to change the product type; through the integrated and modularized design, bentonite products of various types and specifications can be produced on the same production system, so that the production efficiency and the equipment utilization rate are greatly improved, and the production cost is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of bentonite production, and specifically relates to a multifunctional bentonite production system. Background Art

[0002] Bentonite is widely used in drilling, construction, chemical industry, casting and other fields due to its unique properties of water absorption, expansion, suspension and thixotropy. However, with the advancement of science and technology and the development of industry, the application field of bentonite is constantly expanding, and the demand for products is also diversified and personalized.

[0003] Pelletized bentonite, also known as pelletized soil or granular bentonite, is an important geotechnical material, which is then obtained through drying, screening, etc. Pelletized soil is widely used in civil engineering, environmental engineering, farmland hydraulic engineering and other fields.

[0004] Bentonite for casting, also known as foundry clay, plays an important role in the casting process. Its main functions include promoting the bonding of sand molds, enhancing the wear resistance and fire resistance of sand molds, and improving the plasticity of sand molds to ensure the quality of casting. There are mainly two types of bentonite for casting: calcium-based bentonite and sodium-based bentonite.

[0005] Drilling mud soil, referred to as mud soil, uses bentonite, which usually has excellent properties, such as high dispersibility, suspension, swelling, adhesion, adsorption and cation exchange, etc. In drilling mud, bentonite can provide better mud performance, meet the requirements of drilling technology, and thus improve drilling efficiency.

[0006] The pelletizing clay, foundry clay and slurry clay production lines of conventional bentonite processing enterprises are independent, and the maximum production capacity of each production line is also fixed. Since the market demand for various types and specifications of bentonite is different in each period, the independently set up production lines may have insufficient production capacity or overload operation in a certain period of time.

[0007] Therefore, it is necessary to provide an improved technical solution to address the above-mentioned deficiencies in the prior art. Utility Model Content

[0008] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a multifunctional bentonite production system, which can produce a variety of products such as foundry soil, mud soil and pellet soil, and can adjust production according to market development and customer needs.

[0009] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0010] A multifunctional bentonite production system comprises a raw material shed, a crusher, a mud kneading machine, a dosing machine, a two-stage vacuum extruder, a dryer, a metering belt scale, a grinding machine, an additive bin, a first feeder, a first belt conveyor and an elevator. The raw materials in the raw material shed are added to the first feeder by a grab bucket. The outlet of the first feeder is connected to the feeding end of the first belt conveyor. The outlet of the first belt conveyor is connected to the feeding port of the crusher. The outlet of the crusher is connected to the feeding port of the mud kneading machine through the belt conveyor. At the same time, the outlet of the dosing machine is connected to the feeding port of the mud kneading machine. The dosing machine is used to add a sodiumizing agent into the mud kneading machine. The outlet of the mud kneading machine is connected to the feed port of the two-stage vacuum extruder through a belt conveyor, the outlet of the two-stage vacuum extruder is connected to the feed port of the dryer, the outlet of the dryer is connected to the feed port of the buffer bin via the first elevator, the feed port of the buffer bin is connected to the feed port of the metering belt scale, and at the same time, the feed port of the auxiliary agent bin is connected to the feed port of the metering belt scale, the outlet of the metering belt scale is connected to the feed port of the grinding mill via the second elevator, and the outlet of the grinding mill is connected to the feed port of the finished product bin; the auxiliary agents stored in the auxiliary agent bin are added according to the production plan to change the product type.

[0011] Furthermore, the multifunctional bentonite production system also includes a packaging machine and a finished product steel silo; the finished product silo outlet is respectively connected to the feed port of the packaging machine and the feed port of the finished product steel silo, a silo top dust collector is installed on the top of the finished product steel silo, and a discharger is installed at the outlet of the finished product steel silo.

[0012] Furthermore, the multifunctional bentonite production system also includes a buffer silo, the outlet of the finished product silo is connected to the feed port of the buffer silo through a pneumatic conveying pipeline, and the outlet of the buffer silo is connected to the feed port of the packaging machine.

[0013] Furthermore, the multifunctional bentonite production system also includes a fourth belt conveyor, a drying yard, a second feeder, and a fifth belt conveyor; the outlet of the two-stage vacuum extruder conveys the extrudate of the two-stage vacuum extruder to the drying yard via the fourth belt conveyor; the extrudate after drying is added to the feed port of the second feeder by the loader, the outlet of the second feeder is connected to the feed end of the fifth belt conveyor, and the outlet of the fifth belt conveyor is connected to the feed port of the dryer.

[0014] Furthermore, there are two two-stage vacuum extruders, namely a first two-stage vacuum extruder and a second two-stage vacuum extruder arranged below the first two-stage vacuum extruder; the outlet of the mud kneading machine is connected to the feed port of the first two-stage vacuum extruder through a third belt conveyor, the feed port of the second two-stage vacuum extruder is connected to the outlet of the first two-stage vacuum extruder, and the outlet of the second two-stage vacuum extruder is connected to the feed port of the dryer.

[0015] Furthermore, the multifunctional bentonite production system also includes a main workshop; the raw material shed is divided into a crushing area close to the main workshop, and the grab bucket, the first feeder, the first belt conveyor, the crusher and the second belt conveyor are arranged in the crushing area; the outlet end of the second belt conveyor extends into the main workshop; the mud kneading machine, the dosing machine, the two-stage vacuum extruder, the dryer, the first elevator, the buffer bin, the metering belt scale, the additive bin, the second elevator, the grinding machine and the finished product bin are arranged in the main workshop.

[0016] Furthermore, the crusher adopts a double-toothed roller crusher, model 2PGC800×600.

[0017] Furthermore, the dryer is a rotary drum dryer, and the specification of the rotary drum is 3m×30m.

[0018] Furthermore, the grinding mill adopts LM vertical roller mill, model LM1500K.

[0019] Furthermore, the mud kneading machine adopts a double-shaft high-power mixer; the belt conveyor and the measuring belt scale both have a bandwidth of 800 mm; the first elevator adopts a chain bucket elevator, and the second elevator adopts a bucket elevator.

[0020] The beneficial effects of the utility model are:

[0021] The utility model can produce a variety of products such as foundry soil, mud soil and pelletized soil. While seizing the foundry soil and mud soil markets, the production can be adjusted according to market development and customer needs; the occurrence of idle production lines can be effectively reduced; the bentonite multifunctional production system realizes the production of bentonite products of various types and specifications on the same production line through integrated and modular design, thereby greatly improving production efficiency and equipment utilization and reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments and descriptions of the present invention are used to explain the present invention and do not constitute an improper limitation on the present invention. Among them:

[0023] Figure 1 This is an image connection diagram of the production system equipment of an embodiment of the utility model.

[0024] Figure 2 This is an image diagram of the production system equipment after the product of the embodiment of the utility model is ground.

[0025] In the figure: 100-loader, 102-first feeder, 103-first belt conveyor, 104-crusher, 105-second belt conveyor, 106-grab, 301-mud kneading machine, 302-third belt conveyor, 303-first double-stage vacuum extruder, 304-second double-stage vacuum extruder, 305-fourth belt conveyor, 306-additive bin, 307-second feeder, 308-fifth belt conveyor, 309-dryer, 310-first elevator, 311-buffer bin, 312-metering belt scale, 313-second elevator, 314-grinding machine, 316-finished product bin, 317-dosing machine, 802-finished steel bin, 803-unloader, 804-bin top dust collector, 901-buffer bin, 902-packaging machine. DETAILED DESCRIPTION

[0026] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field belong to the protection scope of the present invention.

[0027] In the description of the present invention, the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and do not require that the present invention must be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention. The terms "connected" and "connected" used in the present invention should be understood in a broad sense. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0028] The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0029] like Figure 1 to Figure 2As shown, a multifunctional bentonite production system includes a raw material shed, a crusher 104, a clay kneading machine 301, a dosing machine 317, a double-stage vacuum extruder, a dryer 309, a metering belt scale 312, a grinder 314, an additive bin 306, a first feeder 102, a first belt conveyor 103 and an elevator. The raw material in the raw material shed is added to the first feeder 102 by a grab bucket 106. The raw material is bentonite ore that has been dried and dehydrated, and the moisture content is about 25%; the first feeder 10 The outlet of the crusher 104 is connected to the feed port of the mud extruder 301 through the belt conveyor, and the outlet of the dosing machine 317 is connected to the feed port of the mud extruder 301, and the dosing machine 317 is used to add a sodiumizing agent to the mud extruder 301; the outlet of the mud extruder 301 is connected to the feed port of the mud extruder 301 through the belt conveyor. The conveyor is connected to the feed port of the double-stage vacuum extruder, the outlet of the double-stage vacuum extruder is connected to the feed port of the dryer 309, the outlet of the dryer 309 is connected to the feed port of the buffer bin 311 via the first elevator 310, the feed port of the buffer bin 311 is connected to the feed port of the metering belt scale 312, and the feed port of the additive bin 306 is connected to the feed port of the metering belt scale 312, and the outlet of the metering belt scale 312 is connected to the second elevator 313. The feed port of the grinding mill 314 is connected, and the outlet of the grinding mill 314 is connected to the feed port of the finished product silo 316; the auxiliary agents stored in the auxiliary agent silo 306 are added according to the production plan to change the product type; the auxiliary agents generally include solid agents and liquid agents, generally the liquid agents are quantitatively added by a metering pump, and the solid agents are added by a metering belt scale; in this embodiment, the auxiliary agents used for mud soil and pelletized soil are solid agents, so the metering belt scale 312 is used for metering and addition.

[0030] Furthermore, the bentonite multifunctional production system also includes a packaging machine 902 and a finished product steel silo 802; the finished product silo 316 and the finished product steel silo 802 are both equipped with a pneumatic conveying system, and the outlet of the finished product silo 316 is respectively connected to the feed port of the packaging machine 902 and the feed port of the finished product steel silo 802, and the finished products are pneumatically conveyed to the finished product steel silo 802 as needed, and the products to be packaged are pneumatically conveyed to the packaging machine; the outlet of the finished steel silo 802 is equipped with a discharger 803, and the finished steel silo 802 can directly pneumatically convey the products to the powder tank truck; the top of the finished product silo 316 and the finished product steel silo 802 are both equipped with a silo top dust collector 804, and the volume of the finished product silo 316 and the finished product steel silo 802 is 60m 3 .

[0031] Furthermore, the bentonite multifunctional production system further comprises a buffer silo 901, the outlet of the finished product silo 316 is connected to the feed port of the buffer silo 901 through a pneumatic conveying pipeline, and the outlet of the buffer silo 901 is connected to the feed port of the packaging machine 902; the volume of the buffer silo 901 is 20m 3 .

[0032] Furthermore, the multifunctional bentonite production system also includes a fourth belt conveyor 305, a drying yard, a second feeder 307, and a fifth belt conveyor 308; the outlet of the two-stage vacuum extruder conveys the extrudate of the two-stage vacuum extruder to the drying yard via the fourth belt conveyor 305; the extrudate after drying is added to the feed port of the second feeder 307 by the loader 100, and the outlet of the second feeder 307 is also connected to the feed end of the fifth belt conveyor 308 via a sealing cover, and the outlet of the fifth belt conveyor is connected to the feed port of the dryer 309.

[0033] Furthermore, there are two two-stage vacuum extruders, namely a first two-stage vacuum extruder 303 and a second two-stage vacuum extruder 304 arranged below the first two-stage vacuum extruder 303; the outlet of the mud kneading machine 301 is connected to the feed port of the first two-stage vacuum extruder 303 through the third belt conveyor 302, the feed port of the second two-stage vacuum extruder 304 is connected to the outlet of the first two-stage vacuum extruder 303, and the outlet of the second two-stage vacuum extruder 304 is connected to the feed port of the dryer 309; by squeezing the mud twice, a material with a good degree of mixing can be obtained.

[0034] Furthermore, the multifunctional bentonite production system also includes a main workshop; the raw material shed is divided into a crushing area close to the main workshop, and the grab 106, the first feeder 102, the first belt conveyor 103, the crusher 104 and the second belt conveyor 105 are arranged in the crushing area; the crushing area of ​​the raw material shed is arranged close to the main workshop to reduce the transportation of raw ore and save production costs; the outlet end of the second belt conveyor 105 extends into the main workshop; the mud kneading machine 301, the dosing machine 317, the two-stage vacuum extruder, the dryer 309, the first elevator 310, the buffer bin 311, the metering belt scale 312, the additive bin 306, the second elevator 313, the grinding machine 314 and the finished product bin 316 are arranged in the main workshop.

[0035] The correct selection of process equipment is the key to ensure smooth process flow, stable product quality and reduced production costs. In a specific embodiment, the purpose is to propose a multifunctional bentonite production system with an annual output of 300,000 tons. After comparison, it is decided to use the following advanced, reliable, high-efficiency and low-energy main process equipment:

[0036] The feeder is an automatic metering feeder. After determining the production demand parameters according to the material properties and production requirements, the feeder can automatically control the frequency and adjust the feeding amount. The first feeder 102 and the second feeder 307 are both SL1000.

[0037] Crusher 104, since the moisture content of the raw material is about 25%, according to the material characteristics and actual production experience, a double-toothed roller crusher is selected, specifically 2PGC800×600 double-toothed roller crusher is selected, and the feed particle size is <350mm.

[0038] The bentonite is subjected to sodium treatment, and a sodiumizing agent is added thereto through a mixing device to enhance the various properties of the modified soil. Common modification methods include mechanical extrusion, yard aging, and mill adding agent method. The yard aging method requires a large amount of manpower and a large floor space, the agent mixing degree is poor, and the reaction time is long, and the modification effect is poor; the mill adding alkali method requires the feed ore to have a low water content; and the mechanical extrusion sodiumization method can operate continuously, the reaction time is short, and the sodiumization effect is the best. Therefore, this embodiment adopts a mechanical extrusion sodiumization method, and a sodiumizing agent is added to the mud training machine 301. According to the material characteristics and the processing capacity, the mud training machine 301 uses a double-shaft high-power mixer, and the mud squeezing operation uses a JZK55 two-stage vacuum extruder.

[0039] Dryer 309, the drying goal is to reduce the moisture content of bentonite mud from about 25% to below 15% after heat exchange with heat. The drying equipment for processing extruded bentonite mainly includes mesh belt dryer 309, disc continuous dryer 309, rotary drum dryer 309, flash dryer 309, etc.; these four drying methods are compared comprehensively in terms of technical and economic scale according to the processing capacity of the multifunctional production line with an annual output of 300,000 tons to obtain the following Table 1.

[0040] It can be seen from Table 1 that the rotary drum dryer 309 has the characteristic of large single-unit production capacity. The number of equipment required to process the same amount of ore is far less than the number of equipment required for mesh belt drying, disc continuous drying and flash drying methods. This not only reduces equipment investment and personnel allocation, but also saves equipment floor space and reduces civil construction costs. At the same time, since the rotary drum drying can dry wet materials at a higher temperature, the drying efficiency is improved, and the drying energy consumption per unit product is reduced while ensuring the quality of the dried product, saving energy. Therefore, this embodiment selects the rotary drum dryer 309, and according to the processing volume, the rotary drum dryer 309 with a rotary drum specification of 3m×30m is selected.

[0041] Table 1 Comprehensive economic comparison of different drying schemes

[0042]

[0043] Grinding mill 314. Commonly used grinding equipment in China include Raymond mill (swing mill), vertical mill, ball mill, etc. The grinding equipment commonly used by domestic bentonite processing enterprises is Raymond mill; Raymond mill has small processing capacity per unit and large final power. Taking the commonly used model 5R4119 Raymond mill as an example, its production capacity is 3t / h per unit and the power of the equipment is 168.5kw per unit. The number of equipment required for this production system is 16 units and the total power of the equipment is 2696kW. This embodiment uses LM vertical roller mill. Taking LM1500K vertical mill as an example, its production capacity is 30t / h / unit, and the equipment power is 715kw / unit. The number of equipment required for this production system is 2 units, and the total equipment power is 1430kW. It has high grinding efficiency, large production capacity, low power consumption, simple process flow, low wear, easy adjustment of product fineness, low operating cost, and small footprint; the discharge port of the mill is connected to a cyclone dust collector, and the cyclone dust collector is used to collect the product; the air outlet of the cyclone dust collector is connected to the air outlet of a pulse dust collector, and the pulse dust collector is used for dust removal; the negative pressure conveying air duct of the pulse dust collector is connected to a negative pressure fan; the ash outlet of the cyclone dust collector and the ash outlet of the pulse dust collector are connected to a pneumatic conveying pipe to convey the product to the finished product silo.

[0044] Packaging machine 902, select the fully automatic packaging machine 902, realize automatic control, automatic packaging of tons of packaging, adopt intelligent warehouse management, reduce dust pollution and labor intensity.

[0045] Other equipment: The belt conveyor and the metering belt scale 312 both have a bandwidth of 800 mm; the first elevator 310 adopts a B500Z chain bucket elevator, the second elevator 313 adopts a D250 bucket elevator, and the loader 100 has a shovel load capacity of 6 tons.

[0046] This production system is suitable for bentonite products with the following ingredients: pelletized soil: 98% sodium bentonite + 1% auxiliary agent; foundry soil: 100% sodium bentonite, no agent added; mud soil: 98% sodium bentonite + 2% auxiliary agent; from their composition, it can be seen that their main components are the same, but the content is different. Therefore, the production system of the utility model realizes the production of three products on the same production line through the optimization process, and produces pelletized soil, foundry soil and mud soil according to actual needs, thereby improving equipment utilization and reducing production costs. The optimized main production process is briefly described as: ore → drying → (adding sodium agent) crushing → squeezing mud → aging → drying → (adding auxiliary agents as needed) grinding → packaging → product.

[0047] The main production process of this embodiment is as follows: after the raw materials in the yard are dried, they are transported to the crushing area by the loader 100, and are hoisted into the feeder on the first belt conveyor 103 by the grab bucket 106, and then fed into the double-toothed roller crusher for crushing. The crushed ore is sent to the mud kneading machine 301 via the second belt conveyor 105, and the sodium agent is added through the dosing machine 317 for mixing. After mud kneading, the product enters the two-stage mud extruder for mud extrusion and aging. After mud extrusion and aging, the product enters the rotary dryer 309 for drying. After drying, the product is transported to the pre-grinding buffer bin 311 via the first elevator 310 and the like; then it is ground, and the ground product is a qualified foundry soil product. At the same time, different auxiliary agents can be added before grinding according to the different product positioning. The auxiliary agents are also sent to the pre-grinding buffer bin 311 through the belt scale to produce pelletized soil and mud soil products. The products are pneumatically conveyed to the finished product silo 802 or to the finished product silo 316. The products in the finished product silo 802 can be directly loaded into powder tank trucks for transportation. The finished product silo 316 is the silo before packaging, and the packaged products are sent to the finished product warehouse for storage and sale.

[0048] The process of this production system is flexible and reliable, and can ensure the quality indicators and stability of the products produced. Pelletized soil, foundry soil, and mud soil comply with the GB / T 20973-2020 "Bentonite" standard. The product indicators of pelletized soil produced by this production system are: water absorption ≥300%, blue absorption ≥22g / 100g, expansion capacity ≥15mL / g, 75μm sieving rate ≥95%, and moisture 9%~13%. The product indicators of foundry soil are: wet compressive strength ≥100kPa, hot wet tensile strength ≥2.5kPa, blue absorption ≥28g / 100g, 75μm sieving rate ≥85%, and moisture 9%~13%.

[0049] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention are within the scope of protection of the pending claims of the present invention.

Claims

1. A multifunctional bentonite production system, comprising a raw material shed, a crusher (104), a clay kneading machine (301), a dosing machine (317), a two-stage vacuum extruder, a dryer (309), a metering belt scale (312), a grinding machine (314), an additive bin (306), a first feeder (102), a first belt conveyor (103) and an elevator, characterized in that: The raw materials in the raw material shed are added to the first feeder (102) by the grab bucket (106), the outlet of the first feeder (102) is connected to the feeding end of the first belt conveyor (103), the outlet of the first belt conveyor is connected to the feeding port of the crusher (104), the outlet of the crusher (104) is connected to the feeding port of the mud extruder (301) through the belt conveyor, and at the same time, the outlet of the dosing machine (317) is connected to the feeding port of the mud extruder (301), and the dosing machine (317) is used to add a sodiumizing agent into the mud extruder (301); the outlet of the mud extruder (301) is connected to the feeding port of the double-stage vacuum extruder through the belt conveyor, and the outlet of the double-stage vacuum extruder is connected to the dry The outlet of the dryer (309) is connected to the feed inlet of the buffer bin (311) via the first elevator (310), the feed inlet of the buffer bin (311) is connected to the feed inlet of the metering belt scale (312), and the feed inlet of the auxiliary agent bin (306) is connected to the feed inlet of the metering belt scale (312), the outlet of the metering belt scale (312) is connected to the feed inlet of the grinding mill (314) via the second elevator (313), and the outlet of the grinding mill (314) is connected to the feed inlet of the finished product bin (316); the auxiliary agent stored in the auxiliary agent bin (306) is added according to the production plan to change the product type.

2. The multifunctional bentonite production system according to claim 1, characterized in that: It also includes a packaging machine (902) and a finished steel silo (802); the outlet of the finished steel silo (316) is connected to the feed port of the packaging machine (902) and the feed port of the finished steel silo (802) respectively, a silo top dust collector (804) is installed on the top of the finished steel silo (802), and a discharger (803) is installed at the outlet of the finished steel silo (802).

3. The multifunctional bentonite production system according to claim 2, characterized in that: It also includes a buffer silo (901), the outlet of the finished product silo (316) is connected to the feed port of the buffer silo (901) through a pneumatic conveying pipeline, and the outlet of the buffer silo (901) is connected to the feed port of the packaging machine (902).

4. The multifunctional bentonite production system according to claim 1, characterized in that: It also includes a fourth belt conveyor (305), a drying yard, a second feeder (307), and a fifth belt conveyor (308); the outlet of the two-stage vacuum extruder conveys the extrudate of the two-stage vacuum extruder to the drying yard via the fourth belt conveyor (305); the extrudate after drying is added to the feed port of the second feeder (307) by the loader (100), the outlet of the second feeder (307) is connected to the feed end of the fifth belt conveyor (308), and the outlet of the fifth belt conveyor is connected to the feed port of the dryer (309).

5. The multifunctional bentonite production system according to claim 1, characterized in that: There are two two-stage vacuum extruders, namely a first two-stage vacuum extruder (303) and a second two-stage vacuum extruder (304) arranged below the first two-stage vacuum extruder (303); the outlet of the mud kneading machine (301) is connected to the feed port of the first two-stage vacuum extruder (303) through the third belt conveyor (302), the feed port of the second two-stage vacuum extruder (304) receives the outlet of the first two-stage vacuum extruder (303), and the outlet of the second two-stage vacuum extruder (304) is connected to the feed port of the dryer (309).

6. The multifunctional bentonite production system according to claim 1, characterized in that: The invention also comprises a main workshop; the raw material shed is divided into a crushing area close to the main workshop, and the grab bucket (106), the first feeder (102), the first belt conveyor (103), the crusher (104) and the second belt conveyor (105) are arranged in the crushing area; the outlet end of the second belt conveyor (105) extends into the main workshop; the mud kneading machine (301), the dosing machine (317), the two-stage vacuum extruder, the dryer (309), the first elevator (310), the buffer bin (311), the metering belt scale (312), the additive bin (306), the second elevator (313), the grinding machine (314) and the finished product bin (316) are arranged in the main workshop.

7. The multifunctional bentonite production system according to claim 1, characterized in that: The crusher (104) is a double-toothed roller crusher, model 2PGC800×600.

8. The multifunctional bentonite production system according to claim 1, characterized in that: The dryer (309) is a rotary drum dryer (309) with a rotary drum specification of 3m×30m.

9. The multifunctional bentonite production system according to claim 1, characterized in that: The grinding mill (314) is a LM vertical roller mill, model LM1500K.

10. The multifunctional bentonite production system according to claim 1, characterized in that: The mud kneading machine (301) adopts a double-shaft high-power mixer; the belt conveyor and the measuring belt scale (312) both have a belt width of 800 mm; the first elevator (310) adopts a Z-type chain bucket elevator, and the second elevator (313) adopts a bucket elevator.

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