Best Kaolin Clay CAS 1332-58-7 for Skin Care And Industry

Brightness

• Whiteness is one of the main parameters of Kaolin process performance, and high-purity Kaolin Clay powder is white.

• The whiteness of Kaolin Clay is divided into natural whiteness and whiteness after calcination.

• For ceramic raw materials, the whiteness after calcining is very important. The higher the calcining whiteness, the better the quality.

Particle size distribution

• Particle size distribution refers to the percentage of natural Kaolin powder particles in a specific continuous range of different particle sizes (expressed in millimeters or micrometers).

• The particle size distribution characteristics of Kaolin powder are very important for the selectivity of ore and process applications. The particle size has a great influence on its plasticity, mud viscosity, ion exchange capacity, molding performance, drying performance and sintering performance. Increase.

• Kaolin Clay mines require technical treatment, and the ease of treatment is one of the criteria for evaluating the quality of the ore.

Plasticity

• The mud formed by the combination of Kaolin Clay powder and water can be deformed under the action of external force, and this deformation plasticity can be maintained even after the external force is removed.

• Plasticity is the basis of the Kaolin molding process in the ceramic body, and it is also the key technical indicator of the process.

• Plasticity index and plasticity index are usually used to describe the size of plasticity.

• The plasticity index is the percentage of the liquid limit water content of Kaolin Clay minus the plastic limit water content. That is, W plasticity index = 100 (W fluidity limit-W plasticity limit).

viscosity

• Combination refers to the ability of Kaolin Clay to combine with non-plastic raw materials to form a plastic mud mass and have a certain dry strength.

• The binding capacity is determined by adding standard quartz sand to Kaolin Clay (its mass composition is 70%, the particle size is 0.25 to 0.15 and 30%, and the particle size is 0.15 to 0.09 mm). The maximum sand content that the plastic can maintain is determined by the amount and flexural strength of the mud after drying.

Drying performance

• Drying performance refers to the performance of Kaolin Clay powder during the drying process, such as drying shrinkage, drying strength, drying sensitivity, etc.

• Dry shrinkage refers to the shrinkage of Kaolin Clay powder after anhydrous drying.

Sinterability

• Sinterability refers to the ability of the formed solid powdered Kaolin powder to be heated to close to its melting point (generally 1000°C or higher), the material spontaneously fills the gaps between particles and becomes dense.

• The state with the smallest porosity and the largest density is called the sintered state, and the corresponding temperature is called the sintering temperature.

• As the heating continues, the liquid phase in the sample rises and the sample begins to deform. The temperature at this time is called the transition temperature.

Firing shrinkage

• Sintering shrinkage refers to a series of physical and chemical changes (dehydration, decomposition, mullite formation, melting of fusible impurities to form glass that fills the gaps between particles, etc.) that occur during the calcination process of the dried Kaolin Clay blank. .direction. The properties that cause product shrinkage can also be divided into two types: linear shrinkage and body shrinkage.

Fire resistance

• Fire resistance refers to the ability of Kaolin Clay powder to withstand high temperatures without melting. The temperature at which it softens and starts to melt in high-temperature operation is called fire resistance.

Suspension

• Suspension and dispersibility refer to the characteristic that Kaolin Clay is not easy to settle when dispersed in water. Also called anti-aggregation. Generally speaking, the finer the particle size, the better the suspension.

  Kaolin Clay powder used in the enamel industry requires excellent suspension. Generally, the suspension performance of the sample after being dispersed in water for a period of time is used to determine its suspension performance.

Optionality

• Optionality refers to the manual screening, mechanical treatment, and chemical treatment of Kaolin Clay ore to remove harmful impurities and achieve the quality that meets the performance requirements of the industry.

• The selectivity of Kaolin Clay depends on the mineral composition, development state and particle size of harmful impurities. Quartz, feldspar, mica, iron, titanium minerals, etc. are all harmful impurities.

• Kaolin Clay beneficiation mainly includes projects such as sand removal, iron removal, and sulfur removal.

Adsorption

• Kaolin Clay powder has the ability to adsorb various ions and impurities in the surrounding medium, and has weak ion exchange performance in the solution.

• The pros and cons of these properties mainly depend on the main mineral composition of Kaolin Clay.

Chemical stability

• Kaolin Clay has strong acid resistance but poor alkali resistance. This feature can be used to synthesize molecular beams.

Electrical insulation

• High-quality Kaolin Clay powder has excellent electrical insulation and can be used to make high-frequency porcelain and wireless porcelain. The level of electrical insulation can be measured by resistance to breakdown.