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LIME

机译:酸橙

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摘要

Lime production is the leading chemical use for limestone and dolomite. The term lime in this review refers to high calcium and dolomitic quicklime, their hydroxide forms and dead-burned dolomite. Lime is also reacted with water to produce calcium hydroxide (hydrated lime, type N hydrate, type S hydrate), and can also be reacted with carbon dioxide (CO_2) to make precipitated calcium carbonate. Lime has many industrial uses. In the metallurgical industries, lime is used as a fluxing agent in the manufacture of steel, as well as a foaming agent in slag, and works to protect the refractory. About 22 to 54 kg (50 to 120 lbs) of high calcium and dolomitic lime are consumed in the production of one ton of steel. In the nonferrous metal industries, high calcium lime is used in ore flotation and pH control.
机译:石灰生产是石灰石和白云石的主要化学用途。本文中的术语石灰是指高钙和白云石生石灰,其氢氧化物形式和烧死的白云石。石灰还与水反应生成氢氧化钙(熟石灰,N型水合物,S型水合物),还可以与二氧化碳(CO_2)反应生成沉淀的碳酸钙。石灰有许多工业用途。在冶金工业中,石灰在钢铁生产中用作助熔剂,在矿渣中用作发泡剂,并起到保护耐火材料的作用。一吨钢的生产消耗了约22至54千克(50至120磅)的高钙和白云石石灰。在有色金属工业中,高钙石灰用于浮选矿石和控制pH。

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