Fume production

USEBLASTING - Comparable to 40% ammonia dynamite. High toxic fume production of this explosive limits its use to one where prevalent winds can cany these toxic fumes in a safe direction, away from the user. 

CALCIUM DIFLUORIDE (7789-75-5) CaFj Noncombustible solid. Reacts with acids, liberating hydrogen fluoride fumes production of HF increases with teir erature. Incompatible with mineral acids alkalis, ammonia, aliphatic amines, alkanolamines, alkylene oxides, amides, epichlorohydrin, nitromethane, organic anhydrides, isocyanates, vinyl acetate. 

Aggregate, alumiiia (alumiiium oxide), cement raw mix, clay, dolomite, fluorspar, kaolin, light weight aggregate, lime, limestone, magnesia (magnesium oxide), pigments, silica (silicon dioxide), silica fume Products... 

Average particle size and particle size distribution are very important properties of colloidal silica that influence the behavior of such materials in a broad number of applications. When colloidal sihcas are aggregated in gels, precipitates, or fumed products, their texture can be described in terms of pore volume distributions. The texture of the aggregate also influences its behavior in applications. The chapters in this section describe methods used to determine particle size and pore volume distributions in silicas. 

Vegetable-based solvents cause inereased fume production during pouring and (in the case of die-easting) upon opening of the die. This is due to the low evaporation and eonsequently high residual solvent eontent upon pouring. This effeet does not oeeur with silieate ester solvents. 

The fume products are recycled if possible, but will be removed for separate treatment if the impurity content is too high. 

Cheyrezy, 1995). The particle size and specific surface area of the silica fume are secondary factors, and products with specific surface areas ranging between 10 m /g and 20 m /g may be considered acceptable. The most injurious impurities that may be present in silica fume products are residual carbon and alkalis (de Larrard, 1989). 

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