NTN 23168CCK Spherical Roller Bearing,340x580x190,SKF 23168CCK
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NTN 7013 bearing FAG 6015ZR bearing NTN 6072 bearing NACHI NU2317E bearing SKF 7004CD/DT bearing NSK NUP224 bearing NACHI 29348E bearing NSK 29440 bearing RHP 6002-2RS bearing KOYO 1214 bearing NACHI 6008 bearing RHP 609 bearing KOYO NU324 bearing NACHI 6817N bearing NSK 54215U bearing TORRINGTON F... 217KDD bearing SKF 51130 bearing NSK 6218DDU bearing FAG 1209KTV bearing SKF HK2210 bearing NTN 6911N bearing KOYO 62072RS bearing NSK 6811 bearing KOYO 51122 bearing NTN 6814N bearing FAG-NU322E-TVP2 INA HK2012 bearing TIMKEN 31330X
Colloidal Silica For Civil Engineering
Silica Sol is produced by a variety of chemical methods.Usually Colloidal Silica is monodispersed, meaning that all particles in the sol are of the same size.The particles are chemically "grown" from tiny silicon nuclei suspended in an aqueous solution, and the size of the particles depends on the desired properties of the finished sol.Silica gel is commonly found in small bags used to absorb moisture from clothing, electronics and other items.Larger particles make the silica mixture more stable or may remain dispersed.At high concentrations, smaller particles may form aggregates, making the mixture sticky and sticky.Particle size also affects the appearance of the sol, and mixtures of small particles are more transparent.Colloidal silica is used in a variety of applications.It can be used as abrasive or polishing agent for semiconductors, catalyst for various chemical reactions and coating products.Silica coatings help increase traction on surfaces such as floors and railways due to the abrasion of small particles and their ability to chemically react with another surface.Paper making is another area where colloidal silica is widely used.Here, silica acts as a drainage agent, allowing more starch to be contained in the water pulp processing process. The extra starch increases the toughness of the paper.In wine and juice manufacturing, colloidal silica is used to extract beverages by removing organic compounds from suspensions.These compounds, which would otherwise form an undesirable impurity in the beverage, or adversely affect flavor, would be attracted to the beverage sol by anticharged particles.Silica and impurities form deposits that can then be mechanically removed, leaving behind a pure drink.While in many industrial applications it is important to maintain a uniformly dispersed form of silica, in other cases it is necessary to form clumps or chains of particles.Silica gel, usually used as a desiccant in packaged products, can be formed in this way.When the pH value of colloidal silica drops below 7 or salt is added, the particles in the sol begin to adhere to each other and form chains.Eventually, silica gel is formed.
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