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Role of lapis lazuli

Edit:LYX Stone  Date:Jan 13, 2016

Lapis lazuli is mainly for processing into strontium carbonate and nitrate, which more than 90% for the production of strontium carbonate. Strontium carbonate is the main purpose is the production of color TV picture tube glass screen, this is because the SR can absorb the x-rays. Secondly, used in the manufacture of special glass, can also be used in the smelting of lead agent. Strontium nitrate is the coloring agent red Fireworks and flares. Very small amounts of strontium compounds are used in greases, ceramic glaze and drugs.