FT-7100 Powder Flow Tester (Drum Method) Details

Application Description:

1. Research on the storage and transportation of granular materials, blockage of silos and pipelines, avalanche collapse, overall dense flow, mixing, agglomeration, and dispersion

2. The movement morphology, stability, collapse scale, and probability distribution of particulate matter in the drum

FT-7100 Powder Flow Tester (Drum Method) Details

3. Particle mixture, dry/wet particulate matter, composition matching

4. Different particle morphology and size combinations in research and development

5. Powder dispersion and agglomeration behavior

6. Characterization behavior of powder flowability, shear resistance or ability to maintain flow

7. The influence of external environment on flow, such as powder accumulation in transportation or pipelines and changes in environmental temperature and humidity

Function Description：Functional description

1. Cutting time and rate

2. Surface morphology of particle motion

3. Avalanches, collapse scales, and their probability scores

4. Free surface tilt

5. Thickness of surface flow layer

6. Free surface stability angle

7. Refer to the European Pharmacopoeia

8. Running PC software

9. Data and Graph Model Analysis

10.

system managementscope of applicationScope of application

：

Chemical industry, ceramic processing, food, cosmetics, pigments Quality control and research in the fields of powder and granular materials such as coatings, pharmaceuticals, metal powders, graphite powders, plastics, rubber, concrete, agriculture, etc., used for production and processing, R&D departments, quality departments, research institutes, universities, and laboratories

working principle:

The process of sample accumulation, avalanche, surface morphology, and volume changes in a rotating drum is captured in real-time by a camera and analyzed and processed in real-time by software to establish a data graph and model for analyzing the flowability of particles

Definition and method characteristics description of drum method:

The drum method refers to filling a drum with powder particles and slowly rotating it, measuring the number of times the particles collapse per rotation at a fixed speed. The larger the number of times, the better the flowability; On the contrary, the smaller the size, the poorer the liquidity. This method reflects the stability, critical transition, and collapse scale of particle flow And mass flow rate

The surface of particles in the drum can be divided into three regions from top to bottom due to different flow velocities: sparse flow zone, dense flow zone, and creep zone; The variation of shear rate has a significant impact on the flow characteristics and motion state of particles;

The movement characteristics of particles in a drum can be roughly divided into two regions: the flowing surface layer and the stationary bottom layer, which unify the entire process of particle matter from a stationary state to flow, and then from flow to stillness through blockage. By adjusting the rotational speed of the drum, the flow process and flow state of particles can be obtained

Based on the thickness of the particle flow layer or the inclination angle of the free surface in the drum, the shear rate of the flow layer is obtained, and then the flowability of the particle material is calculated The shear deformation rate of particles in the dense flow area from the center to the free surface under different rotational speeds and drum diameters exhibits linear variation characteristics. The average shear rate reflects the average shear deformation ability of particle flow, and is influenced by factors such as particle size, shape, friction coefficient, and flow state.

Parameter information: parameter

Outer diameter of drum cylinder: 150mm

Depth (length): 20-80mm (optional)

The cross-section of the drum is made of transparent glass

The

cross section of drum roller is transparent.

Rotation rate of drum roller: 0.8 r/min -120

r/min，

Resolution: 0.01 r/min

Fill the drum with powder samples to a volume of 50%

The

drum is filled with powder sample to volume 50%.

At a speed range of approximately 3-9 r/min, the particles can maintain stable flow and the free surface remains flat

When