Eggshell powder making machine is industrial grinding mill equipment that can grind eggshells into 150-3000 mesh powder. The eggshell powder making machine can be equipped with conveyors, classifiers, powder collectors, balers, etc. to form a complete production line. The production line is intelligent and controllable, which not only improves the efficiency of eggshell powder making, but also saves a lot of labor.
Features: small footprint, stable operation, safe and reliable, long service life, simple operation, convenient maintenance, environmental protection, etc.
Working Principle of Eggshell Powder Making Machine
The material passes through the gap between the grinding roller and the grinding ring and achieves the effect of crushing and grinding due to the rolling of the grinding roller.
The ground powder falls on the chassis due to gravity and is blown to the classifier above the main engine for classification under the airflow of the blower.
If the fineness does not meet the requirements, it will still fall into the host for regrinding.
The fineness meets the requirements and flows into the pulse dust collector with the wind, and the finished product is discharged through the discharge valve after collection.
Advantages of Eggshell Powder Making Machine
● Higher output, lower energy consumption
The newly designed grinding curve of the grinding roller and ring further improves the grinding efficiency of the HGM ultrafine grinding mill. Under the same fineness and power, the production capacity is 40% higher than that of jet mills and stirring mills, the output is twice that of ball mills, and the system energy consumption is only 30% of jet mills.
●150-3000 mesh adjustable fineness
The cage-type powder concentrator of the HGM superfine grinder adopts German technology to effectively improve the precision of powder selection. In addition, a multi-head cage powder separator can be configured according to the user’s requirements for output, fineness, and screening rate. The fineness of the product can be adjusted arbitrarily between 150-3000 mesh, and the one-time screening rate can reach d97≤5μm.
● No rolling bearings and screws in the grinding chamber
There are no rolling bearings and screws in the cavity of the HGM ultrafine grinding mill. Users do not need to worry about damage to bearings or seals, and there is no problem of machine damage due to loose screws. The lubrication device is installed outside the main shaft, which can realize external non-stop lubrication and continuous production for 24 hours.
● Pulse dust collector dust removal makes the operation more environmentally friendly
The HGM ultrafine grinding mill is equipped with a high-efficiency pulse dust collector, so there will be no dust pollution during the operation of the entire crushing system. Equipped with silencer and anechoic room to reduce noise. Production is organized in accordance with national environmental protection standards.
Parameters of Eggshell Powder Making Machine
Parameters of HGM series ultrafine grinding mill
Ring Number (PCS)
Input Size (mm)
Adjustable range of finished product (mesh)
Outlet Size L*W*H (mm)
Main motor power (kw)
About Eggshell & Eggshell Powder
Speaking of eggs, there is an ancient controversy puzzle that often arouses ancient philosophers to explore and discuss the origin of life and the universe. “The chicken lays the egg, the egg lays the chicken, who is the first to appear in this world, is it a chicken or an egg?” This is still a question that is often explored to this day.
Eggs are eggs laid by hens, which contain rich nutrients such as protein, calcium, and phosphorus. It has many cooking methods and delicious taste, which is deeply loved by people. However, eggshells are often discarded as garbage. In fact, there are many benefits of eggshells, which can be reused after being processed by eggshell powder making machines.
Eggshell powder is a powdered product made from discarded eggshells. It is rich in inorganic salts and a small number of organic substances. It can be mixed into feed and fed to livestock and poultry to supplement calcium deficiency and promote the growth and development of livestock and poultry.
The eggshell powder contains 94.54% calcium carbonate, 1.15% protein, 4.36% magnesium carbonate, and calcium phosphate. It is widely used in food calcium source addition, feed additives, daily chemical product processing, cleaning, fertilizer, and other fields.
The production and utilization of eggshell powder, turning waste into treasure, has important economic value for the sustainable development of recycling ecology.
Natural drying is exposure to the sun to evaporate moisture from the eggshell. In order to make the moisture evaporate faster, the eggshells should not be spread too thick (below 3 cm). Don’t turn it at first, wait until the water evaporates, turn the pile and dry it again.
Heating and drying are to put the eggshells in a drying room for drying. There is heating equipment in the drying room, with air holes on it, and the room temperature is 80～100℃. The eggshell can be dried in about 2 hours at a temperature of 100°C.
② To remove impurities
Due to improper stacking and storage of eggshells, the eggshells will contain more impurities. Such as bamboo chips, wood chips, iron wires, etc., all need to be removed.
③ Eggshell powder milling
There are two methods for making powder from eggshells: the crushing method and the milling method.
The crushing method is to use an eggshell crusher to mash the dried eggshells into powder. It can be crushed on flat ground or put into a mortar. It can be tamped by hand, or the hammer can be driven by a motor. This method is suitable for households or a small amount of eggshell grinding.
The grinding method generally uses industrial grinding equipment to grind the eggshells into powder. This method is suitable for factories to process a large number of eggshells, and the fineness of eggshell powder can be adjusted freely according to requirements. The production is more flexible and the application is wider.
④ Sifting and packaging
The mashed eggshell powder is uneven in thickness and must be sieved. The coarse eggshell powder left on the sieve should be re-ground. If you use SBM’s industrial ultrafine grinding mill, its own powder classifier can automatically complete the powder screening. The production line can also be equipped with a packing machine to automatically complete the packaging of eggshell powder.
Process Flow of Eggshell Powder Production Line
Eggshell needs to undergo a reasonable grinding process to further realize its higher economic value. It is very important to choose suitable grinding equipment and design a scientific production line process.
The eggshell milling process is generally divided into two stages: crushing and grinding. The equipment used includes a jaw crusher, eggshell powder making machine, bucket elevator, electromagnetic vibrating feeder, fan, analyzer, conveying pipeline, etc. The specific process flow is as follows:
The first stage: broken
Eggshell is tougher and its fibers are thicker, so it needs to be coarsely crushed first. Use a crusher to crush the eggshell to the fineness (10mm-50mm) that can enter the mill.
The second stage: milling
The crushed small pieces of eggshell are sent to the silo by elevator and then sent to the grinding chamber of the mill evenly and quantitatively by the vibrating feeder for grinding.
① Fine powder processing: Raymond mill or high-pressure suspension roller mill can be used. ② Ultrafine powder processing: HGM ultrafine grinding mill or CLUM vertical roller mill can be used. ③ Coarse powder processing: European version of coarse powder mill can be used.
The ground material is classified by the classifier, and the unqualified powder is classified by the classifier and returned to the host for re-grinding.
The fourth stage: collecting powder
The powder that meets the fineness is separated and collected by the airflow through the pipe into the dust collector. The collected finished product powder is sent to the finished product silo by the conveying device through the discharge port. Then uniformly use a powder tanker or automatic packing machine for packaging.
Advantages of Eggshell Powder Mill Production Line
① The production line is equipped with special dust removal equipment, with low dust emission and good dust removal effect, basically reaching more than 99.99%, realizing dust-free workshop operations.
② The production line runs stably, with low vibration, reduces the operating noise to a smaller range, and at the same time has a low failure rate, reducing maintenance costs by nearly $5,000 per year.
③ An automatic control system is installed, which can remotely control the running status of the production line without requiring workshop personnel, making operation more convenient and maintenance more convenient.
④ The equipment is more reasonable and compact, the area of the production line is reduced by about 30%, and the investment cost is reduced by at least $3500.
⑤ High powder extraction rate and large output. At the same time, the finished eggshell fine powder after processing has uniform particle size, high quality, high purity, and stable quality, and the sieving rate is over 99.99%.
What are the effects of eggshell powder on plants?
The reason why eggshell powder plays a role in the growth and promotion of flowers is that eggshell powder can improve the physical properties of the soil, make it more loose and breathable, have good drainage, and is beneficial to the growth of roots. At the same time, the soil is loose and breathable, which is also conducive to the growth of microorganisms in the soil.
What is the medicinal value of eggshell powder?
External application of powder from eggshells can treat wounds, reduce inflammation and relieve pain. A layer of egg membrane in the eggshell can also cure burns and relieve pain.
The calcium carbonate content in the eggshell is as high as 90%, and it also contains a little sodium carbonate, hydrogen phosphate, and other substances.
The powder made from fried yellow eggshells can be taken with boiling water to cure diarrhea. Taking it before or after meals can relieve stomach pain, and can relieve pain and reduce acid in patients with duodenal ulcers and hyperacidity.
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