What Is Bulk Density?
Bulk density is the mass per unit volume of dust or powder that is freely filled in a container.
- Chinese name
- Bulk density
- Classification
- Loose bulk density and tapped bulk density.
- Definition
- Refers to loose or powdery materials,
- Unit
- g / cm3 or kg / m3,
- Bulk density is the mass per unit volume of dust or powder that is freely filled in a container.
- The relationship between the bed material bulk density b and the bed material density p is b = p (1-)
- is the porosity of the material when it is stationary, b is the bulk density, which needs to be measured, and p is the true density. You can refer to the literature.
- bulk density
- Also known as bulk density, bulk density, hair density, referred to as bulk density. The mass per unit volume of the granular material in the stacked state. Calculate according to the formula: 0 = m / V 0 , where: 0 is the bulk density, kg / m; m is the mass of the material in a certain container, kg; V 0 is the bulk volume of the material, That is, the volume of the container, m, is the total volume including the voids between the particles and the voids inside the particles.
- The density calculated according to the natural bulk volume is called loose density; the calculation based on the tapped volume is called the tap density.
- Bulk density is affected by factors such as container size and filling method. The measurement should be performed according to a certain method. Usually, the sample is allowed to fall freely through a funnel from a certain height (see picture). The density after loose filling is called sparse filling density. The density after dense filling is called the dense packing bulk density. In addition, there are parameters such as compression ratio, filling ratio and porosity.
- Bulk density tester