Acasă > listă de emisiuni
If you need to perform a variety of grinding and mixing tasks in your laboratory, a moară la scară de laborator is ideal. These machines can process a wide range of materials, including metals, sand, ceramics, and others. The main benefits of these machines are their ease of use, durability, and efficiency.
Wet milling is an efficient method for reducing material particle size. It's frequently used in pharmaceuticals and organic chemistry. Wet milling using a mașină de frezat umedă is the process of dissolving solid material in a liquid slurry and reducing agglomerates to fine particles.
When deciding whether to use wet or dry milling, it is critical to consider the final product's particle size reduction requirements. Several factors, including the particle size of the grinding media and the size of the solid, can influence the final particle size. The final particle size can be achieved through multiple passes or through speed adjustments, depending on the type of wet milling equipment used.
Wet milling may be the best option if the particle size is less than 12 micron. This is because of the impact forces created when a solid particle in the slurry collides with the milling media. A smaller media produces a higher surface area while having a lower velocity through the fluid. By increasing the surface area, the dissolution rate increases, improving the product's bioavailability.
Fine milling can also improve the finished product's physical properties. Furthermore, small particles are desirable for a variety of applications. Formulations for parenteral and transdermal administration are among them. Particles of this size are also more resistant to degradation and sedimentation, which improves the final product's quality.
Wet milling equipment, on the other hand, has a low capacity and requires frequent maintenance. Furthermore, the amount of energy required is enormous. A hose pump is used to pump the agglomerates through the mill during a typical wet milling process.
A novel electromechanical principle for wet milling was developed to ensure that the milling process is optimized. The stainless steel beads are kept moving through the media by this electromechanical design, which includes a disc agitator.
While wet milling can reduce particle size in some materials, it can result in yield losses. To avoid these issues, it is recommended that the amount of liquid in the slurry be at least 60% of the total dry weight.
Cryogenic milling produces particles that are smaller and finer than those produced by traditional mechanical milling methods. This technique has been demonstrated to be a dependable method of processing temperature sensitive samples in the laboratory.
Cryogenic milling using a mașină de măcinat criogenică is ideal for producing particles that can be used in new products. These products require grain spectra ranging from 50 to 180 mm.
Any grinding mechanism, including jet mills, rotor-stator homogenizers, impact whirl mills, and internal agitated ball mills, can be used for cryogenic milling. However, when the product is sprayed with liquid nitrogen as it enters the Attritor, the best results are obtained.
Cryogenic milling results in rapid particle size reduction. A coarse wheat bran, for example, had a d90 of 1835 um before being reduced to a d90 of 1298 um in the first pass. 90% of the particles were smaller than 19 um and 195 um after the second pass.
Cryogenic milling produces finer particles, which have implications for nutrition-related properties. The SWRC (sodium and water retention capacity), for example, is affected by particle size. It increased by about 1% when milled at 15 um.
TWRC has been shown to be unaffected by laboratory scale cryogenic milling. This is due to the fact that wet milling produces a more porous structure.
A similar study on large-scale milling was conducted using an industrially available impact whirl mill. The TWRC was found to be higher in the wet-milled sample than in the lab-scale sample.
After one and two passes, wet-milled samples had d50 values of 55 and 33 um, respectively. While this is comparable to the d50 of laboratory-scale samples, the d90 decreased from 1835 um to 1535 um, indicating a greater proportion of smaller particles.
Lab-scale Cryogenically milled samples had d50 and d90 values of 1.2 and 1.4 mL/g dm, respectively. As a result, wheat bran has the highest surface area and water retention capacity. It also had the smallest particle size of any of the three samples.
Finally, the SWRC of laboratory-scale cryogenically milled bran was the same as that of wet-milled bran. The only distinction was the particle size.
Researchers have investigated the effect of impeller speed on grinding media in moara cu bile la scara de laborator. This is an important consideration in how the energy required to grind a sample is utilized. To date, the majority of studies have been carried out using laboratory-scale equipment. However, scaling up to a real-world pilot plant necessitates additional technological research.
A Discrete Element Method (DEM) simulation study was performed to evaluate the impact of impeller speed on grinding media in a stirred mill. This method allowed for a thorough examination of the flow properties of the grinding media. A total of four different grinding media shapes were simulated.
Blocky and spherical media are examples of this. Each media shape has a unique shape-related effect on its transport and sizing behavior. A blocky, elongated particle, for example, has a larger sphere of revolution than a close packing dimension. As a result, the granular force network has become more powerful. It also helps to increase the yield strength of bulk materials to be transported.
A finer screen limits the maximum particle size to a specific range. Additionally, finer screens reduce the amount of air that can enter the Grinding Chamber. Ultimately, this will reduce material heating as well as thermal degradation.
Previous research has concentrated on particle breakage rates in ball mills and vertically stirred media mills. However, few studies have been conducted to investigate the effects of media shape on grinding.
In one study, the power draw and torque of two different impeller designs were investigated. Another study looked at the effect of non-spherical, worn media on mill load position.
The experiments in this study were carried out on a pilot-scale tower mill. The settling zone in this case limited the tip speed to less than 3 m/s. Despite this limitation, the results of this study are expected to be representative of stirred mill behavior.
The Centre for Sustainable Resource Processing contributed to the funding of this study. To investigate the dynamics of the grinding media in a vertical stirred mill, the Discrete Element Method was used.
moară de măcinat la scară de laborator is useful for testing and analysis. They offer a clean, repeatable process that ensures the accuracy of your results. However, there are some things to think about before buying a lab mill.
First, you must decide which type of laboratory mill to purchase. There are numerous types, ranging from disc mills to bead mills. You want to buy a machine that will meet your requirements. When making a decision, consider the final particle size as well as the throughput rate.
It is also critical to select a mill that is long-lasting and simple to maintain. Cleaning lab equipment on a regular basis will help you avoid cross contamination between product runs. This helps to keep your project on track and reduces downtime.
The amount of power required to run a machine should also be considered. This is usually expressed in kilowatt hours per hour. This number can be used as a guide to calculate how much energy a production mill will require. For example, if your production mill produces 600kgs of material per week, you can use this to calculate how many kilowatt hours you will require.
Other factors to consider include power consumption and throughput. Throughput rates can also provide insight into the amount of energy required by manufacturing mills. This method allows you to see how your process will scale up to a larger production mill.
Scaling up a grinding process can be technically challenging. Fortunately, there are methods for hastening the process. One method is to use a high-speed mill. While this will be more expensive than a cheaper model, it will reduce the product's downtime.
Finally, think about the materials used in the mill's construction. This ensures that you are purchasing a machine that will last a long time. Proper design will keep costs low while still allowing your equipment to grind a wide range of samples.
Tencan's manufacturing center covers 20,000 square metres as well as its research and development center covers 22,000 square. This ensures that Tencan is able to meet all customer requirements. Tencan is a partner with 20 doctors and has been granted more than 30 patents.
Activitatea principală a companiei implică trei domenii: fabricarea de echipamente pentru pulberi, tehnologia pulberilor și materiale pulverulente. Ofertele noastre actuale includ Moară planetară cu bile de laborator crushing, milling machines and screening, mixing, stirring and equipment.
The company is accredited with the ISO9001 quality management system and CE, SGS, as and other certifications for systems. In addition, it has acquired more than 40 patents on core technology that have independent intellectual properties rights. It was designated a "high technology company in Hunan Province"
The major customers are universities, research institutions, as well as technology-based companies. We have more than 20000 customers across 60 countries, and have exported to over 60 countries.
EN 
NL
FR
DE
HI
IT
KO
PL
PT
RU
ES
TR
AR
BG
HR
CS
DA
FI
EL
JA
NO
RO
SV
IW
ID
LV
LT
SR
SK
SL
UK
VI
ET
HU
UZ
TH
FA
MS
BE
HY
AZ
KA
MN
MY
KK
TG
