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  • Thermal properties of spray-coated geopolymer-type compositions
    The optimum water:cement ratio was determined by trial and error using a spray gun with 0.5-mm-diameter nozzle. For comparison, we also prepared coatings by dipping the steel into the geopolymer formulation. Fine- and coarse-ground vermiculite powders were added to some of the formulations to improve thermal .
  • Fire Resistant Coverings
    The sprayed mineral fiber fire resistive coatings are blends of mineral fibers and inorganic binders, which are applied directly to the surface being protected. The fibrous material is blown through a spe- cial spray gun that combines fibers, air, and water … The principal cementitious type of sprayed fire resistive material consists of expanded vermiculite aggregate, hydraulic binders, such …
  • ZCP2010ITSC189
    HVOF Lasercarb® Capital asset K$ 250 K$375 (includes (includes grid blating laser, powder booth , feeder, spray booth, chiller, gas gun powder installation) feeder, chiller, gas installation) Depreciation 2 2 period years Usage hour/ 4160 4160 year 45.07 $30.05 Direct hourly … Grid blasting Hvof Laser carb® Yes No Preheat Yes No Coat / cool Yes Yes Cool down … Table 4 Process comparison Nevertheless, preheating and slow cool down (in vermiculite ) are applied as a crack …
  • Industrial Gases
    … Cryogenic insulation 225–9 aerogel 227–8 perlite 227 radiation losses 228 thermal conductivities 229 vermiculite 227 see also … … Desflurane, see Fluranes DESY R&D institute 517 Detarred tobacco 371 Detonation 274 Detonation gun 324 Deuterium 137 … Electron beam coating 482 Electron capture detector 171, 224 Electron cyclotron resonance 403 Electronic flow controls 220–1 … … flat flame 477 hardening 319 high emissivity 477 high-velocity 269 premixed 267–9 spraying of powders 323–4 …
  • ZCP2011ITSC0795
    The flame-spray process was completed with a UNY- SPRAY -JET UTP gun at a pressure of 2.5 bar for the oxygen gas and of 1 bar for the acetylene. The melting process After spraying, the flame-spray coatings were laser remelted. … a furnace and their cooling rate after the laser treatment was slowed by placing them in vermiculite .
  • Ceramoconcrete refractory and heat-insulating components in ferrous and nonferrous metallurgy
    The material shows al- most no shrinkage, and this avoids the formation of a large number of cracks, which had been assumed to be a normal phenomenon for a gun - sprayed surface. The loss of mixture on coating a vertical surface is 25%. The organization has its own production of ex- panded vermiculite , so VKVS is used in making blocks …