Oyster shells

Oxytocinase Oysters Oyster shell Oyster shells Ozokerite... 

Eig. 1. Bags of oyster shell used as cultch for the settling of oyster spat. The spat-laden shell is ultimately distributed on leased oyster beds. 

Oyster shell, another of the many forms of fossiliferous limestones, is a relatively pure source of CaCO. ... 

Raw materials consist of combinations of limestone, cement rock, or oyster shells,... 

Lime from oyster shell 240 tons/day, shell (120 tons/day, hme) (1) 22 ft, 3 in, diam, 12 hearth furnaces ... 

Oyster Shells and Lime Rock Operating characteristics for hammer mills grinding oyster shells and burned lime for agricultural purposes are given in Table 20-30. 

TABLE 20-30 Operating Data for Grinding Oyster Shells and Burned Lime in Hammer Mills... 

Bicarbonate of soda 41 A26 Oyster shells, ground, V4 in and under 53 C27... 

Boneblack, 100 mesh and under 20-25 A275 Oyster shells, whole D27X... 

Austernschale, /. oyster shell, austilgen, v.t. destroy, efface, obliterate. Austonen, n. change in (color) tone. 

Fuel treatments have been used for very many years as an aid to improving the combustion efficiency process. Old formulations often used saw dust, wood flour, common salt, zinc sludge, ground oyster shell, and similar crude ingredients, but could still provide a dramatic effect when thrown into a fire. The metallic salts present (sodium in salt, zinc in sludge, and calcium in shell) acted as catalysts that dramatically lowered the ignition temperature of soot deposits from around 1100 °F/590 °C to only 600 °C/315 °C the fire burned vigorously and the soot disappeared. 

Another excipient used in feed additive premixes is a diluent used to dilute or standardize activity. Diluents are similar in composition to grain carriers, except the particle size is generally smaller. No attempt is made to absorb the active drug to the individual particles of the diluents. If a liquid is used it is mainly for dust control. A diluent is considered for use when the level of the active ingredient components in the premix approaches or exceeds 50% of the product or when two or more active components vary greatly from one another in density [13]. Examples of diluent materials are ground limestone, sodium sulfate, kaolin, corn cob flour, and ground oyster shells. 

Alzieu, C., J. Sanjuan, J.P. Deltreil, and M. Borel. 1986. Tin contamination in Arcachon Bay effects on oyster shell anomalies. Mar. Pollut. Bull. 17 494-498. 

Dow seawater A process for extracting magnesium from seawater. Calcined dolomite (CaO-MgO, dololime), or calcined oyster shell, is added to seawater, precipitating magnesium hydroxide. This is flocculated, sedimented, and filtered off. For use as a refractory it is calcined for the manufacture of magnesium chloride for the manufacture of magnesium metal, it is dissolved in hydrochloric acid. Developed by the Dow Chemical Company and later operated by the Steetly Company in West Hartlepool, UK, and Sardinia. 

Calcium carbonate (CaCO ) can be in the form of an odorless crystal or powder and is one of calcium s most stable compounds, better known in its natural state as limestone, marble, chalk, calcite, oyster shells, and the minerals marl and travertine. Calcium carbonate is the source of lime and is used as a filler for many products, including paints, plastics, and foods (bread), and as an antacid. 

The manufacture of Portland concrete consists of three basic steps—crushing, burning, and finish grinding. As noted earlier, Portland cement contains about 60% lime, 25% silicates, and 5% alumina with the remainder being iron oxides and gypsum. Most cement plants are located near limestone (CaCOs) quarries since this is the major source of lime. Lime may also come from oyster shells, chalk, and a type of clay called marl. The silicates and alumina are derived from clay, silicon sand, shale, and blast-furnace slag. 

Gui Zhi Gan Cao Long Gu Mu Li Tang (Cinnamon Twig, Licorice, Dragon Bone and Oyster Shell Decoction)... 

Kim, G. H., Jeon, Y. J., Byun, H. G., Lee, Y. S., and Kim, S. K. (1998). Effect of calcium compounds from oyster shell bound fish skin gelatine peptide in calcium deficient rats. J. Korean Fish. Soc. 31,149-159. 

Fujita, T., Fukase, M., Miyamoto, H., Matasumoto, T., and Ohue, T. (1990). Increase of bone mineral density by calcium supplement with oyster shell electrolysate. Bone Miner. 11, 85-91. 

Simkiss, K. The organic matrix of the oyster shell. Comp. Biochem. Physiol. 16, 427 (1965)... 

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