Wet-method powder preparation production line

Abstract

The utility model discloses a wet-method pulverizing production line, which relates to the technical field of mechanical pulverizing equipment and comprises a jaw crusher, a cone crusher, a transfer bin, a double-roller pulverizing machine, a vibrating screen, a separating tower, a magnetic separator, a second dewatering screen, a first conveying belt, a second conveying belt, a third conveying belt, a fourth conveying belt and a first conveying pump. The jaw crusher, the cone crusher, the transfer bin, the double-roller flour mill and the vibrating screen are sequentially connected through a first conveying belt, a second conveying belt, a third conveying belt and a fourth conveying belt, the water spraying device is arranged on the upper portion of the vibrating screen, and the vibrating screen is connected with the separating tower through a first conveying pump. The separating tower is arranged at the upper part of the magnetic separator; the magnetic separator is arranged at the upper part of the second dewatering screen; the device has the characteristics of low operation and maintenance cost, capability of ensuring the quality and the yield of finished powder products and the like; the method is suitable for preparing mineral powder including quartz sand powder, dolomite powder, calcium carbonate powder and the like.

Description

Technical Field

[0001] This utility model relates to the field of mechanical powder making equipment technology, and in particular to a wet powder making production line. Background Technology

[0002] Currently, quartz sand production mainly employs two methods: wet grinding and dry grinding. While dry grinding offers significant energy advantages, the resulting powder contains more impurities that are difficult to separate. Wet grinding primarily uses two methods: water milling and ball milling. The former has lower output, while the latter consumes more energy and has higher production costs. Furthermore, in existing production lines, all controls are implemented via control panels with buttons, resulting in low information density, a large operating surface, and a mechanical display layout that is ergonomically inefficient and prone to errors.

[0003] Chinese patent (patent application number 202011461768.0) discloses a "wet preparation method and production line for high-purity quartz sand." This method and production line includes coarse crushing-screening, fine crushing-screening, magnetic separation, scrubbing, flotation, gravity separation, and dewatering. These steps can be connected to form an automated continuous production line, achieving continuous and efficient production of quartz sand. Furthermore, in this application, the fine crushing-screening, magnetic separation, scrubbing, flotation, and gravity separation processes are all carried out in a slurry state, constituting a wet sand-making process. This reduces energy consumption and environmental pollution. In addition, this application controls the slurry concentration in each stage of the wet sand-making process to ensure the treatment effect at each stage. Through multi-stage magnetic separation, multi-stage flotation, and gravity separation, the impurity content of the quartz sand can be reduced to less than 50 ppm, and further reduced to less than 30 ppm.

[0004] Another Chinese patent (patent application number 202021101895.5) discloses a "quartz sand production line," which includes a ore washing and sorting system, a storage system, a sand making system, and a water circulation system. The sand making system includes a fine crushing line, a screening mechanism, a secondary treatment line, and a drying line. The fine crushing line is connected to the ore washing and sorting system. The screening mechanism is equipped with a finished product outlet and a defective product outlet. The defective product outlet is connected to the input end of the secondary treatment line. Both the secondary treatment line and the finished product outlet are connected to the input end of the drying line. The water circulation system includes an acid supply device, a regulating tank, and a sludge treatment unit. The acid supply device is connected to the ore washing and sorting system. The input end of the sludge treatment unit is connected to the regulating tank. The sludge treatment unit supplies purified wastewater to the acid washing line, the rinsing and sorting line, and the secondary treatment line through pipelines. This quartz sand production line can reuse defective minerals and wastewater in the quartz sand production process, reducing production costs.

[0005] Another Chinese patent (patent application number 202022989580.5) discloses a "wet production line for high-purity quartz sand preparation." This production line includes a coarse crushing unit, a rod mill unit, a magnetic separator unit, a scrubbing machine, multiple flotation units, a gravity separation device, and a dewatering treatment device. These devices can be connected in series to form an automated continuous production line, achieving continuous and efficient production of quartz sand. In this production line, the material is processed in a slurry state through the rod mill unit, magnetic separator unit, scrubbing machine, multiple flotation units, and gravity separation device, thus employing a wet sand-making process. This reduces energy consumption and environmental pollution. Furthermore, this application controls the slurry concentration at each stage of the wet sand-making process, ensuring the processing effect at each stage. Through multi-stage magnetic separation, multi-stage flotation, and gravity separation, the impurity content of the quartz sand can be reduced to less than 50 ppm, and further reduced to less than 30 ppm.

[0006] Another Chinese patent (patent application number 202210180677.2) discloses a "Data-Driven Intelligent Production Control System for Quartz Sand," which includes a control module, a weighing module, and an alarm module. The weighing module includes a screening component and a weighing component. The screening component is located at the output port of the discharge conveyor to screen the quartz sand after cold-cold treatment. The weighing component weighs the quartz sand that does not meet the volume requirements and sends the weighing data to the control module. The control module includes a comparison unit that receives the weighing data sent by the weighing component and compares it with a standard value. If the weighing data is greater than the standard value, the control module sends an alarm signal to the alarm module, which then issues an alarm notification upon receiving the alarm signal. This application has the advantage of reducing the probability of poor cold-cold treatment of quartz sand.

[0007] Another Chinese patent (patent application number 202122235314.8) discloses a "novel intelligent control system for a crusher," which employs a technical solution including: a microcontroller unit and a crusher motor control module and a feeder motor control module connected to the microcontroller unit. The crusher motor control module is used to control the rotation of the crusher motor, and the feeder motor control module is used to control the rotation of the feeder motor. The microcontroller unit sends crushing command parameters to the crusher motor control module, and the crusher motor control module sends motor control signals according to the crushing command parameters to control the opening or closing of the first AC contactor and the second AC contactor. The opening or closing of the first AC contactor and the second AC contactor controls the forward or reverse rotation of the crusher motor. Summary of the Invention

[0008] In view of the shortcomings of the existing technology, the technical problem to be solved by this utility model is to provide a production line for preparing quartz sand powder with low operation and maintenance costs and guaranteed quality and output of the powdered product.

[0009] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is to design a wet milling production line, including a jaw crusher, a cone crusher, a transfer hopper, a double-roll mill, a vibrating screen, a water spraying device, a separation tower, a magnetic separator, a second dewatering screen, and a first conveyor belt, a second conveyor belt, a third conveyor belt, a fourth conveyor belt, and a first conveying pump; the jaw crusher and the cone crusher are connected by the first conveyor belt, the cone crusher and the transfer hopper are connected by the second conveyor belt, the transfer hopper and the double-roll mill are connected by the third conveyor belt, the double-roll mill and the vibrating screen are connected by the fourth conveyor belt, the water spraying device is located above the vibrating screen, the vibrating screen and the separation tower are connected by the first conveying pump, the separation tower is located above the magnetic separator, and the magnetic separator is located above the second dewatering screen.

[0010] It also includes a safety screen, a second conveying pump, a first dewatering screen, and a fifth conveyor belt; the vibrating screen is connected to the safety screen via the first conveying pump, and the safety screen is connected to the separation tower via the second conveying pump; the first dewatering screen is placed below the safety screen, and the first dewatering screen is connected to the transfer silo via the fifth conveyor belt.

[0011] It also includes a sixth conveyor belt and a finished product bin, with the two ends of the sixth conveyor belt connected to the second dewatering screen and the finished product bin, respectively.

[0012] It also includes a tail powder bin, which is located at the bottom of the separation tower.

[0013] This utility model's wet milling production line includes five separation devices: a vibrating screen, a safety screen, a separation tower, a magnetic separator, and a second dewatering screen. These devices can separate out the vast majority of impurities, thus ensuring the quality of the finished product. At the same time, by using roller milling equipment instead of traditional water mills or ball mills, the production output can be guaranteed while significantly reducing operating and maintenance costs. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the block structure of the production line of this utility model;

[0015] Figure 2 This is a schematic diagram of the start-up process of the production line of this utility model. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and embodiments. The following description is by way of example, but the scope of protection of the present invention should not be limited thereto.

[0017] Example:

[0018] The wet milling production line of this embodiment consists of a jaw crusher, a cone crusher, a transfer hopper, a double-roll mill, a vibrating screen, a water spraying device, a safety screen, a separation tower, a magnetic separator, a first dewatering screen, a second dewatering screen, a first conveyor belt, a second conveyor belt, a third conveyor belt, a fourth conveyor belt, a fifth conveyor belt, a sixth conveyor belt, a first conveyor pump, a second conveyor pump, a finished product silo, and a tailings silo (see appendix). Figure 1 (As shown).

[0019] The jaw crusher and cone crusher are connected by a first conveyor belt; the cone crusher and the transfer hopper are connected by a second conveyor belt; the transfer hopper and the roller mill are connected by a third conveyor belt; and the roller mill and the vibrating screen are connected by a fourth conveyor belt. A water spraying device is installed above the vibrating screen (the water spraying device includes a water washing nozzle, a water pump, and a circulating water tank; the water washing nozzle is located above the vibrating screen, the water pump is located in the circulating water tank, and the output end of the water pump is connected to the water washing nozzle via a water pipe). The vibrating screen and the safety screen are connected by a first conveyor pump; the safety screen and the separation tower are connected by a second conveyor pump; the separation tower is located above the magnetic separator; the magnetic separator is located above the second dewatering screen; and the second dewatering screen and the finished product bin are connected by a sixth conveyor belt. The tail powder bin is located below the separation tower; and the first dewatering screen is located below the safety screen and is connected to the transfer hopper by a fifth conveyor belt.

[0020] The startup process of each piece of equipment in the production line in this embodiment (i.e., the startup sequence) is shown in the appendix. Figure 2 As shown, the sequence is as follows: water spray device → sixth conveyor belt → second dewatering screen → magnetic separator → separation tower → second conveyor pump → safety screen → first conveyor pump → vibrating screen → fourth conveyor belt → roller mill → third conveyor belt → transfer silo → second conveyor belt → cone crusher → first conveyor belt → jaw crusher → fifth conveyor belt → first dewatering screen.

[0021] The stopping process (i.e., the order in which the equipment stops) in the production line of this embodiment is the reverse process (i.e., the opposite order) of the starting process described above.

[0022] To use, simply follow the above startup procedure and press the start / stop switches of the corresponding devices in sequence. To stop, press the start / stop switches of the corresponding devices in reverse order.

[0023] During production line operation, ore raw materials (such as quartz, dolomite, etc.) enter the jaw crusher for coarse crushing. The coarsely crushed material is conveyed by the first conveyor belt to the cone crusher for fine crushing. The finely crushed material is then conveyed by the second conveyor belt to a transfer hopper for temporary storage. The finely crushed material in the transfer hopper is conveyed by the third conveyor belt to the roller mill for fine grinding. The fine powder from the roller mill is conveyed by the fourth conveyor belt to a vibrating screen (the water washing nozzles in the water spraying device are located above the vibrating screen) for washing, separating the ore powder from the mud into a mixture. This mixture is then conveyed by the first conveyor pump to a safety screen for coarse and fine separation. Here, the material is divided into two streams: one stream contains coarse material, which falls into the first dewatering section below under gravity. The coarse material is dewatered by a water screen. After dewatering, it is transported by the fifth conveyor belt to a transfer silo for temporary storage. The other path is that the mixture after separating the coarse material is transported by the second conveyor pump to the separation tower for mud-powder separation. The separated mud-water enters the tail powder silo at the bottom of the separation tower for sedimentation under gravity. The separated ore powder enters the magnetic separator at the bottom of the separation tower for magnetic separation under gravity. Magnetic materials (such as iron powder) contained in the ore powder are attracted by the magnets in the magnetic separator (which are removed periodically). After magnetic separation, the ore powder enters the second dewatering screen at the bottom of the magnetic separator for dewatering under gravity. After dewatering, it becomes the finished product and is transported by the sixth conveyor belt to the finished product silo for storage.

[0024] The wet powder production line of this utility model is suitable for preparing mineral powders including quartz sand powder, dolomite powder and calcium carbonate powder.

Claims

1. A wet-milling production line, characterized in that: The system includes a jaw crusher, a cone crusher, a transfer hopper, a double-roll mill, a vibrating screen, a water spraying device, a separation tower, a magnetic separator, a second dewatering screen, and a first conveyor belt, a second conveyor belt, a third conveyor belt, a fourth conveyor belt, and a first conveying pump. The jaw crusher and the cone crusher are connected by the first conveyor belt, the cone crusher and the transfer hopper are connected by the second conveyor belt, the transfer hopper and the double-roll mill are connected by the third conveyor belt, the double-roll mill and the vibrating screen are connected by the fourth conveyor belt, the water spraying device is located above the vibrating screen, the vibrating screen and the separation tower are connected by the first conveying pump, the separation tower is located above the magnetic separator, and the magnetic separator is located above the second dewatering screen.

2. The wet-milling production line according to claim 1, characterized in that: It also includes a safety screen, a second conveying pump, a first dewatering screen, and a fifth conveyor belt; the vibrating screen is connected to the safety screen via the first conveying pump, and the safety screen is connected to the separation tower via the second conveying pump; the first dewatering screen is placed below the safety screen, and the first dewatering screen is connected to the transfer silo via the fifth conveyor belt.

3. The wet-milling production line according to claim 2, characterized in that: It also includes a sixth conveyor belt and a finished product bin, with the two ends of the sixth conveyor belt connected to the second dewatering screen and the finished product bin, respectively.

4. The wet-milling production line according to claim 3, characterized in that: It also includes a tail powder bin, which is located at the bottom of the separation tower.

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