Lime calcium powder, also known as calcium hydroxide powder or quicklime powder, is a fine powdered inorganic compound, the main component is calcium hydroxide (Ca(OH)2), usually white or off-white. Ash calcium powder has excellent alkalinity, can be used to neutralize acidic substances, can also be used as disinfection, anti-corrosion and desiccant and other purposes. In the field of building materials, ash calcium powder is often used as a raw material for adhesives, coatings, fillers, moisture-proof agents and other materials.
Detection performance
| property | Detection method |
|---|---|
| appearance | Visual inspection |
| colour | Color comparison |
| Particle size distribution | Laser particle size analysis |
| luminance | Gloss meter |
| Ash content | Ash determination instrument |
| Active calcium content | Acid-base titration |
| Moisture content | Drying method |
| Specific surface area | Specific surface area meter |
| pH value | PH meter |
| Oil absorption | Air buoyancy method |
| density | densitometer |
| Specific gravity | Weighing method |
| Activity degree | Hardening time tester |
What properties should be tested for ash calcium powder? What tests are available?
Detection method
The following is a test method for the common properties of ash calcium powder:
Appearance: Using the visual method, observe the particle shape, color and other characteristics of gray calcium powder.
Color: The use of color comparator or color meter and other instruments, based on international standard color cards or specific color indicators, to determine the color of gray calcium powder.
Particle size distribution: Using a laser particle size analyzer, the particle size distribution of gray calcium powder is determined by the relationship between the intensity of scattered light and particle size.
Brightness: Use a gloss meter to measure the intensity of light reflected from the surface of the gray calcium powder to obtain its brightness value.
What properties should be tested for ash calcium powder? What tests are available?
Ash content: Using an ash analyzer, the ash calcium powder sample is heated to a certain temperature to determine the quality of the solid inorganic components.
Active calcium content: The percentage of active calcium content in ash calcium powder was determined by acid-base titration method.
Moisture content: Using the drying method, the ash calcium powder sample is heated to a certain temperature to determine the moisture content in it.
Specific surface area: Using a specific surface area meter, the specific surface area is calculated by measuring the adsorption and desorption process of the gray calcium powder sample.
pH value: Use a pH meter or acid-base indicator to determine the pH value in the lime calcium powder aqueous solution.
Oil absorption: air buoyancy method was used to determine the adsorption capacity of ash calcium powder to oil.
What properties should be tested for ash calcium powder? What tests are available?
Density and specific gravity: Determine the density and specific gravity of gray calcium powder by densitometer or weighing method.
Activity: The hardening time tester is used to determine the activity of lime calcium powder by observing the solidification time after mixing with water.