Automatic Chalk Production Line
Chalk Powder Automatic Productino Line Design:
In order to achieve high efficiency, consistent quality, and little manual labor in the production of educational supplies, an Automatic Chalk Production Line is a fully integrated, continuous manufacturing system that turns raw gypsum into finished chalk sticks through a smooth process of grinding, mixing, molding, drying, and packaging.
Preparing Raw Materials and Reducing Initial Size
The processing of the main raw material, gypsum, a type of calcium sulfate, is the first step in the production process. It is necessary to first reduce raw gypsum ore, which is sometimes obtained in huge chunks, to a manageable size. Usually, a Hammer Mill or a sturdy coarse crusher is used to perform this, breaking the ore into homogenous, smaller pieces. The line frequently includes a specialized grinding machine for the finer, more controlled grinding required to produce the base powder. The gypsum needs to be ground regularly, but it doesn’t need to be as fine as an Ultrafine Grinder used for medicine or other chemicals. For this purpose, a universal grinder or a high-speed dry grinder are frequently used.The reactive plaster of Paris (hemihydrate) is created by calcining (heating) the ground material to remove excess water. After that, the qualities of this powdered plaster are stabilized by aging. For large-scale operations, the first stage of crushing and grinding, which is managed by machinery like a 500KG grinder, is essential to guaranteeing a consistent feedstock. This idea is similar to that of processing other mineral or dry food products like rice, sugar, or salt. This section of the line is always equipped with an effective dust collector grinder or vacuum mill system to maintain a clean and safe production environment and prevent the inhalation of fine gypsum dust, a concern similar to that in flour mills or spice processing plants using a black pepper grinder.
Precision molding, de-aeration, and slurry mixing
After being properly measured, the aged plaster powder is mixed with water in an automated mixing tank. To create a smooth, pourable slurry, the ratio—typically three parts powder to one part water—is crucial. To avoid premature setting, this mixing procedure needs to be thorough and quick. Additional pigments and binding agents are added at this stage for specialist chalk lines, like those that produce colored or dustless chalk, necessitating homogenous dispersion similar to mixing ingredients in food processing like batter or dough. In order to produce chalk sticks with uniform density and smooth writing qualities, the slurry is further subjected to a vacuum de-aeration process to eliminate trapped air bubbles.Here, rows of precise stainless steel molds are filled quickly by sophisticated hydraulic or pneumatic injectors, frequently yielding dozens of chalk sticks each minute. Similar to how a cutting type form gives shape to other products, the mold design determines the ultimate shape—round, hexagonal, or triangular. To guarantee speed and repeatability, a central PLC closely monitors the entire mixing and molding process.
Curing, Drying, and Demolding
The produced but still wet chalk sticks are immediately removed using precision pins after a brief initial setting in the molds.After being carefully placed onto conveyor belts, these tiny green (unfired) chalks are transported through a multi-zone drying tunnel. Over the course of many hours, the surplus water is progressively removed by controlled, circulating warm air (around 80°C), enabling the plaster to re-crystallize and acquire its ultimate strength. The integrity of the finished product is determined by this drying process, which is less harsh than the strong heat employed in a cryogenic grinding machine or an air-cooled crusher system. As with the regulated drying of ceramic bone china or some tea leaves, the drying kinetics must be carefully controlled to avoid warping or cracking.
Automated Packaging, Cooling, and Quality Control
The chalk sticks are chilled to room temperature after coming out of the dryer.After that, they go through an automated inspection process that looks for visible flaws and dimensional accuracy using visual cameras or basic mechanical gauges. After that, acceptable chalk is sent to the packing section. Automated devices count and arrange the sticks into rows before packing them into cartons for bulk packaging into boxes. The delicate sticks are protected from harm by the packaging equipment, which frequently has stainless steel guides and a precision movement akin to an electric grinder for delicate handling. The line can incorporate shrink-wrapping and labeling stations for retail packs. After packaging, the final boxes are palletized for shipping, frequently automatically.
Compliance, Flexibility, and System Integration
A centralized control system oversees the entire Automatic Chalk Production Line, coordinating the charger that feeds the grinding machine with raw gypsum, the slurry mixing parameters, the molding cycle, the dryer temperature, and the speed of packaging. This makes it possible to manage recipes precisely, switch between different colors or sizes of chalk quickly, and provide complete manufacturing traceability. Although the line was created for gypsum, its fundamental ideas of liquid-solid mixing, molding, heat curing, and powder processing (similar to a cassava grinding mill for starch) are used in a wide range of sectors, from construction and chemical to food (bean curd, some maize snacks). Using water-soluble binders to reduce dust, modern lines prioritize environmentally responsible manufacture, making the finished product safer for use in classrooms.Reputable manufacturers make sure their systems, from the main grinding machine to the conveyors, meet relevant safety standards, similar to holding a CE Certificate grinder for industrial equipment. The equipment, particularly in contact zones, is built with large stainless steel components for durability and hygiene. The Automatic Chalk Production Line is a prime example of effective, dependable, and clean manufacturing for a basic teaching tool, from raw materials to boxed output.
Parameters:
Model Name | SG-600 | |
| Crushing Capacity(kg/h) | 1000~2000 | |
| Power(kw) | 11 | |
| Feeding Size(mm) | <5mm | |
| Fineness(mesh) | 20~40mesh |
Model Name | SG-800 | |
| Crushing Capacity(kg/h) | 2000~4000 | |
| Power(kw) | 15 | |
| Feeding Size(mm) | <5mm | |
| Fineness(mesh) | 20~40mesh |
Trade Capacity
| International Commercial Terms(Incoterms): | FOB, CIF, CFR | Terms of Payment: | LC, T/T, PayPal, Western Union |
| Average Lead Time | 60 working days | Main Markets | North America, South America, Europe, Southeast Asia/ Mideast, East Asia(Japan/ South Korea), Australia, Domestic |
| Nearest Port: | Ningbo Port; Shanghai Port | Factory Address: | JiangSu, China |
Ampere of Motors Customization for Seeds Grinder:
| KW | HP | Ampere |
| 75kw | 100HP | 135A |
| 55kw | 75HP | 99A |
| 30kw | 40HP | 54A |
| 22kw | 30HP | 39A |
| 2.2kw | 3HP | 3.9A |
| 1.5kw | 2HP | 2.7A |
Test Report for Flax Seed Grinder:
A flax seed grinder is a type of seed nut grinder specifically designed for grinding flax seeds. Flax seeds are small, hard seeds that are packed with nutrition and are commonly used in baking and cooking. Grinding flax seeds helps to unlock their nutrients and make them easier to digest.
Flax seed grinders typically feature sharp blades or burrs that rotate to crush the flax seeds into a fine powder. This powder can then be used in a variety of recipes, such as smoothies, baked goods, and yogurt toppings. Some flax seed grinders are manual and require hand-cranking, while others are electric and feature powerful motors for faster grinding.
When choosing a flax seed grinder, it’s important to look for one with durable blades or burrs that can withstand the hard texture of flax seeds.
There are 3 ways of cooling down the grinder: water cooling system; air cooling system and liquid nitrogen freezing system. You can choose the right one if the grinder gets too hot. When machines goes too hot, the metal can expand, causing the grinding wheel to get stuck.
| Business Type: | Manufacturer/Factory | Main Products: | Mill, grinder, granulator, mixer, Crushing Equipment |
| Number of Employees: | 100 | Year of Establishment: | 2014.05 |
| Production Capacity | 5000Set/Year | After-sales Service: | Technical Support; on-line teach lessons |
| R&D Capacity: | ODM, OEM | Annual Output Value: | US$5 Million – US$10 Million |
| No. of R&D Staff: | 5 | No. of Production Lines: | 6 |
LK Mixer is a professional manufacturer for grinder, mixer and pulverizer. These machines are widely used in pharmaceutical, cosmetic, health care products and chemical industries. Our main product including granulating machine, grinder, mixer, dryer, etc. All mechanical products in accordance with the China GMP design requirements. And also we have other certifications such as CE, UL for motors.
Business Philosophy
“Quality is the main policy of sales” and “integrity is the principle of success” are the business philosophy of our people. We carry out one-year warranty, lifelong maintenance service, with technical consultation, with material test machine and other services, and long-term supply of equipment. Welcome new and old customers to negotiate cooperation!
Certifications:
Customer Side Machine Groups Showcase Videos:
Dust Collector Shipment
Shipment – Packing Method
Two Large Industrial Grinder Ready to Ship
Domestic Shipment Show Case:
Operation Instruction
General Provisions
The operation instructions for a commercial grinder may vary depending on the specific model and manufacturer. However, here are some general guidelines that may apply to many high speed grinders:
- Safety precautions: Before operating the high speed grinder, it is important to review all safety precautions and warnings provided in the user manual. Safety precautions may include wearing appropriate personal protective equipment, such as eye protection and hearing protection, and avoiding loose clothing or jewelry that could become caught in the grinder.
- Preparation: The high speed grinder should be placed on a stable and level surface, and all necessary components should be assembled according to the manufacturer’s instructions. The grinder should also be connected to a power source that is appropriate for its voltage and wattage.
- Loading the grinder: The material to be ground should be loaded into the grinder according to the manufacturer’s instructions. Overloading the grinder may cause damage to the machine and result in poor grinding performance.
- Starting the grinder: The grinder should be started according to the manufacturer’s instructions. This may involve pressing a button, turning a dial, or flipping a switch. The user should ensure that their hands are clear of the grinder and that the material to be ground is positioned properly.
- Adjusting the speed and settings: The speed and other settings of the high speed grinder may be adjusted according to the material being ground and the desired outcome. The user should follow the manufacturer’s instructions for making adjustments to the grinder.
- Monitoring the grinding process: The user should monitor the grinding process to ensure that it is progressing smoothly and that the material is being ground to the desired size and consistency. Any issues or abnormalities should be addressed promptly to prevent damage to the machine.
- Shutting down the grinder: When the grinding process is complete, the grinder should be shut down according to the manufacturer’s instructions. The user should ensure that the machine is completely stopped and that all moving parts have come to a complete stop before attempting to clean or service the grinder.
Overall, the operation instructions for a commercial grinder may involve a number of steps and safety precautions. It is important to carefully review the manufacturer’s instructions and follow proper operating procedures to ensure safe and effective use of the machine.
Preparation Work
Before running a commercial grinder, there are several important preparation steps that should be taken to ensure safe and effective operation of the machine. Here are some general guidelines for preparing to run a high speed grinder:
- Read the user manual: The first step in preparing to run a high speed grinder is to carefully read the user manual provided by the manufacturer. The user manual will provide important information about the specific model of grinder being used, including its features, specifications, and safety precautions.
- Select the appropriate grinding wheel: The grinding wheel used in a high speed grinder should be selected based on the material being ground and the desired outcome. It is important to use the correct type of grinding wheel to prevent damage to the machine and ensure optimal grinding performance.
- Inspect the grinder: Before running the grinder, it is important to inspect it for any signs of damage or wear. The user should check for loose or missing components, cracks or other signs of damage to the machine’s housing or other parts, and any other issues that could affect the grinder’s operation.
- Install the grinding wheel: The grinding wheel should be installed according to the manufacturer’s instructions, making sure that it is securely fastened and aligned properly. The user should also check the wheel for any cracks or other signs of damage before installation.
- Secure the workpiece: The workpiece to be ground should be securely clamped or held in place before starting the grinder. This will help to ensure safe and effective operation and prevent the workpiece from becoming dislodged or damaged during grinding.
- Connect the power source: The high speed grinder should be connected to a power source that is appropriate for its voltage and wattage. It is important to use a properly grounded power source to ensure safe and reliable operation of the machine.
- Test run: Before beginning actual grinding operations, it may be useful to perform a test run to ensure that the grinder is functioning properly and that the grinding wheel is aligned and balanced properly. The user should follow the manufacturer’s instructions for performing a test run.
By following these preparation steps, users can ensure safe and effective operation of a high speed grinder and achieve optimal grinding results.
Treatment of inspection
Inspection of a commercial grinder is an important maintenance procedure that helps ensure safe and effective operation of the machine. Here are some general guidelines for inspecting a high speed grinder:
- Disconnect power source: Before performing any inspection or maintenance on a high speed grinder, the power source should be disconnected to prevent accidental startup.
- Check for wear and damage: The user should inspect the grinder for any signs of wear or damage, such as cracks in the housing, worn or damaged grinding wheels, or loose or missing parts. Any issues should be addressed promptly to prevent further damage to the machine.
- Check alignment and balance of grinding wheel: The grinding wheel should be inspected for proper alignment and balance, as these factors can affect the quality of the grinding operation. If the grinding wheel is not properly aligned or balanced, it should be adjusted or replaced as necessary.
- Check for proper lubrication: The high speed grinder should be inspected for proper lubrication, as inadequate lubrication can cause excessive wear and damage to the machine’s moving parts. The user should follow the manufacturer’s instructions for lubrication, and add lubricant as necessary.
- Inspect electrical components: The electrical components of the high speed grinder, including the wiring, switches, and control panel, should be inspected for any signs of wear, damage, or loose connections. Any issues should be addressed promptly to prevent electrical problems.
- Test run: After completing the inspection, it may be useful to perform a test run of the high speed grinder to ensure that it is functioning properly and that any issues have been addressed.
By following these inspection guidelines, users can help ensure safe and effective operation of a high speed grinder and minimize the risk of damage or injury during grinding operations.
Operation Attention
Running a commercial grinder can be a dangerous operation if proper precautions are not taken. Here are some general guidelines for safe operation of a high speed grinder:
- Personal protective equipment: The user should wear appropriate personal protective equipment, such as safety glasses, hearing protection, and gloves, to prevent injury from flying debris, noise, and contact with the grinding wheel.
- Secure workpiece: The workpiece being ground should be securely clamped or held in place to prevent it from becoming dislodged during grinding.
- Use proper grinding wheel: The user should select the appropriate grinding wheel for the material being ground and ensure that it is installed correctly and securely. The grinding wheel should be inspected for cracks or other damage before use.
- Adjust grinding wheel speed: The speed of the grinding wheel should be adjusted according to the manufacturer’s instructions to ensure optimal grinding performance and prevent damage to the machine or workpiece.
- Avoid excessive pressure: The user should avoid applying excessive pressure to the grinding wheel, as this can cause the wheel to overheat and wear out more quickly.
- Avoid overheating: The high speed grinder should not be operated continuously for extended periods of time, as this can cause overheating and damage to the machine.
- Monitor grinding operation: The user should closely monitor the grinding operation to ensure that the workpiece is being ground properly and that the grinding wheel is functioning correctly.
- Disconnect power source: After completing grinding operations, the power source should be disconnected to prevent accidental startup.
By following these guidelines, users can operate a high speed grinder safely and effectively, and achieve optimal grinding results. It is important to follow the manufacturer’s instructions and all applicable safety regulations when operating any type of machinery.
Applications of Industrial Seed Grinder
Industrial seed grinders are used in a variety of applications across many industries. Here are some of the most common applications of industrial seed grinders:
- Food industry: Industrial seed grinders are used extensively in the food industry to grind seeds, nuts, and spices into fine powders or pastes. These powders and pastes are then used in a variety of products such as sauces, seasonings, and spreads.
- Pharmaceutical industry: In the pharmaceutical industry, industrial seed grinders are used to grind plant material into a fine powder, which is then used to make medicines and supplements.
- Cosmetics industry: Industrial seed grinders are also used in the cosmetics industry to grind plant material into a fine powder or paste, which is then used in products such as face masks, scrubs, and exfoliants.
- Agricultural industry: Industrial seed grinders are used in the agricultural industry to process seeds, such as soybeans, into animal feed.
- Chemical industry: In the chemical industry, industrial seed grinders are used to grind materials such as resins, pigments, and dyes into a fine powder.
- Renewable energy industry: Industrial seed grinders are also used in the renewable energy industry to process biomass into a fine powder, which is then burned to generate electricity.
Overall, industrial seed grinders are versatile machines that are used in many different industries for a variety of applications. They are essential for processing plant material into fine powders and pastes that can be used in many different products.
In order to achieve high output, consistent quality, and operational efficiency for the educational supplies industry, an Automatic Chalk Production Line is a fully integrated, continuous manufacturing system that turns raw gypsum into finished, packaged chalk sticks through a smooth, automated process of grinding, calcination, mixing, molding, drying, and packaging.
Intake of Raw Materials and Primary Size Reduction
Receiving and preparing gypsum rock, which is mostly made of calcium sulfate dihydrate, is the first step in the process. First, a controlled charger or conveyor is used to feed large pieces of raw gypsum into the system.The decrease of coarse size is the first crucial stage. The big rocks are broken up into smaller, more consistent granules, usually about 5 mm in size, using a strong coarse crusher or a Hammer Mill. To produce a feedstock appropriate for the next step of thermal processing, this initial crushing is necessary. Similar to the main breaking of cassava roots, certain seeds, or mineral ores in other chemical or food-related operations, this technology is essential to many bulk material processing companies.
Aging, Calcination, and Fine Grinding
After being crushed, the gypsum granules are sent to a special grinding machine for additional processing.A uniform, medium-fine powder is required here, but an ultrafine grinder used for medicine or other spices, such as those ground by a licorice grinder, is not. This consistent powder consistency is usually achieved with a universal grinder or a high speed dry grinder. After that, the powdered gypsum is sent to a calcination furnace, which is typically a rotating kiln, and heated to about 150°C. A portion of the water of crystallization is driven out by this regulated heating, changing the dihydrate into the reactive hemihydrate—also referred to as plaster of Paris. After that, the calcined plaster is sent to aging silos and left to rest for roughly 48 hours. Later on in the process, this aging ensures uniform setting times by stabilizing its chemical properties.An effective dust collector grinder or vacuum mill system is essential during these dry handling phases, which include crushing, grinding, and transporting powder. Similar to the systems used in flour mills or businesses that process tea, salt, or sugar, it regulates airborne gypsum dust, guaranteeing a safe working environment and preventing product loss.
Accurate Slurry Blending and De-aeration
After that, the aged plaster powder is carefully metered into an automated mixing tank, usually at a ratio of roughly three parts powder to one part water. In this case, it is mixed with water to create a pourable, smooth slurry. At this stage, exact proportions of pigments and binding agents are added to create colored or dustless chalk, necessitating complete and uniform dispersion.The technology used for mixing must guarantee that no lumps are created. The slurry goes through an essential vacuum de-aeration procedure after mixing. In order to produce chalk sticks with high density, smooth surfaces, and consistent strength—as well as to keep them from becoming brittle or porous—this procedure eliminates trapped air bubbles. In theory, the de-aeration unit works similarly to producing a consistent consistency in certain food combinations or specialty substances.
Molding and Forming at High Speed
The high-speed molding station receives the de-aerated slurry right away. Here, rows of precise stainless steel molds are filled with it under pressure. The FM800 series and other contemporary lines are capable of producing hundreds of chalk sticks in a single cycle.The molds serve as a precise cutting form for the liquid slurry, defining the final shape, which might be circular, hexagonal, or triangular. Ejection pins automatically push the produced, but still wet, “green” chalk sticks out of the molds onto a conveyor after a brief initial setting time. Programmable circuitry ensures uniformity throughout the quick, cyclical molding process.
Regulated Curing and Drying
After that, a multi-zone drying tunnel is used to transport the wet chalk sticks. For several hours, the sticks are surrounded by regulated warm air that is about 80°C. The surplus mixing water is eliminated by this slow, gentle drying process, which also enables the plaster to finish its chemical re-crystallization and acquire its ultimate strength and hardness.Similar to the regulated drying of ceramics or other food goods, the drying kinetics are carefully controlled to avoid warping or cracking. Although it is less harsh than the quick cooling in an air-cooled crusher, it is equally important for the integrity of the final product.
Automated Packaging, Sorting, and Cooling
The chalk sticks are cooled to room temperature after drying. After that, they go through an inspection room where any sticks with obvious flaws are eliminated. This area may have automated optical systems or basic mechanical sorters. After that, the packaging department receives the approved chalk. The sticks are arranged by automated counts and arraying devices before being put into boxes or covered with paper sleeves.To prevent harming the delicate sticks, the packaging equipment frequently has delicate handling mechanisms, possibly with movements as exact as the feed of an electric grinder. For a full turnkey solution, the line can incorporate palletizing robots, carton sealing, and labeling.
Operational excellence and system intelligence
A central computerized control system (PLC) controls the complete Automatic Chalk Production Line. From the charger and grinding machine at the beginning to the packing robots at the finish, it synchronizes every part. This makes it possible to precisely regulate production rates, quality standards, and recipes.With wide stainless steel surfaces in every slurry contact area for durability and ease of cleaning, the line is built for clean operation. Reputable producers make sure their systems meet industry safety requirements. Though specifically designed for chalk, the line’s engineering principles—exact mixing, molding, thermal processing, and raw material reduction (think of it as an Industrial Weed Grinder for fibrous materials)—are applicable to a wide range of manufacturing industries, from construction materials to food (such as forming certain corn or rice-based products). This automated line, which produces packed chalk and raw gypsum rock, is a prime example of scalable, dependable, and effective manufacturing.
Food Producing Process Flow:
Ultrafine grinding is one of the very key procedure in whole production line. It depends how many mesh that customer need to produce. That’s to say this machine can decide what kind of material will get finally before mxing.
Coarse Crusher Machine —>Grinding Machine —> Vibrating Table Sifter Machine—>Mixing Machine—>Packing Machine —> (Printed Packaging Film Roll or bags ) —> Filling, sealing machine, capping and Labeling Machine —>Pack into Box.
Contact us for detail proposal and cost:
Automatic Banana Powder Production Line Youtube Video
Customization Seeds Grinder According to your Capacity:
We can customize the capacity according to your special requirement, we can also customize the vacuum feeder connect with your production line (the dimension and width of grinder), for detail contact with our sales for proposal and price.
Videos of Seeds Grinder Machine:
Many model of Seeds Grinder, the universal grinder is suitable to cut the seeds into 12-120mesh, the high efficient grinder is useful, but cost a little bit higher than universal. The super fine grinder can grind into 100mesh to 320mesh. Customer can choose according to your own requirement. here show some example:
About LKMixer
LKMixer is a professional manufacturer for fertilizer production line, grinder, mixer and granulator, shredder. These machines are widely used in food, pharmaceutical, cosmetic, health care products and chemical industries. The Food materials like Peanut, mushroom, seeds, potato, bean, tobacco, salt, cannabis, tea, Sugar, corn, Coffee, rice, pepper, grain as so on. Grinders have many types such as Pulse Dust Grinder which suitable for zero pollution environment, Turbine Mill which is suitable for coffee bean, 12-120mesh all can meet, Ultrafine Grinding Mill covers 80-200mesh, and also Winnowing Dust Grinder or other grinding machines like SF Hammer. Welcome to contact us for details. Contact us for more information. Proposal, catalog, quotation. Mobile/WhatsApp: +86 18019763531 Tel: +86 21 66037855 Email: sales@lkmixer.com
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