Mica, wet-ground

Exact si2ing of mica products coupled with surface treatment procedures have led to a greater use for wet ground mica in plastic compositions, particularly automobile bodies. These quahty products demand a high dollar value. 

Tables 4 and 5 show properties of ground mica products. For all forms of ground mica the index of refraction is 1.58 wt %, Mohs hardness is 2.5, oil absorption (Brit. Stand. 3483) is 60.75%, water solubihty (Brit. Stand. 1765) is <0.3%, the phericity factor is 0.01, and the softening point in °C is 1538. For Microni2ed and wet ground micas the brightness (green filter), pH, and apparent density in kg/m are 75, 5.2, and 160—224, respectively for dry ground mica, 66—75, 6.2, and 192—561, respectively (1).

Wet Ground Mica. Wet ground mica is used because of its unique properties, ie, luster, sHp and sheen, and high aspect ratio (1,1 )-... 

Har 160 Mica. [KMG Minerals] High aspect ratio wet ground mica. 

Snow White. [Unimin Spedaliy Minerals] Wet ground mica. 

In 2008, average prices for the US mica ranged from 200 to 400/ton for dry ground and from 700 to 1000/ton for wet-ground mica [27, 28]. Micronized mica was quoted at 700-1000/ton [28]. Prices for surface-treated grades vary and are usually... 

Wet-Ground Mica, High-aspect-ratio mica, Franklin Industrial Minerals Wetstick, PSA tapes resist moistrrre, Avery Dennison, Specialty Tape Div. 

BARIUM SULLATE PIGMENT ALUMINUM SILICATES DIATOMACEOUS SILICA MAGNESIUM SILICATES WET GROUND MICAS PURE TOLUIDINE RED TONER BARIUM SULFATE PIGMENT MAGNESIUM SILICATE PIGM. ALUMINUM SILICATE PIGM. DIATOMACEOUS SILICA RAW AND BURNT UMBER RAW AND BURNT SIENNA YELLOW IRON OXIDE SYNTHETIC FE-OXIDE INDIAN LACS PINE OIL TALL OIL... 

Kings Mountain, NC Operation Wet Ground Mica Products WG-325 ... 

Rouxhet, P. G., and G. W. Brindley, 1966. Experimental studies of fine grained micas. II. The water content of wet ground micas. Clay Mineral. 6 211-228. 

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