Lime can be used in the chemical industry in a variety of ways – as a natural calcium carbonate, as burnt calcium oxide, as slaked or hydrated lime, or as chemically precipitated calcium carbonate. In the chemical industry, lime is used for the production of inorganic or organic calcium compounds, as a reaction agent for chemical syntheses, to alter pH values, in chemical reactions, physico-chemical treatment processes and as a neutraliser. Lime is an important basic component in the manufacture of glass and ceramics. It is also indispensable in the sugar industry. Milk of lime is added to the raw beet juice. This pre-liming process leads to the separation of non-sugar substances, especially protein.