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nature : the furnace, blast furnace or kiln temperature conditions, coke (or anthracite) as the reductant, silica flux for the reduction of phosphate rock for phosphorus element and then by oxidation (combustion)% phosphorus pentoxide, water absorption (hydration) and the phosphorylation system. General BF electric arc furnace production or element phosphorus by the phosphorylation system called thermal phosphoric acid, which already industrialized, electric furnace method to be widely adopted. Producers and Rotary Kiln is known as the PA. The thermal phosphoric acid concentration and purity than WPA higher. Preparation for the main types of phosphate and food industries (such as yeast culture agents), there were also used for production of high concentration phosphate (SSP).
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