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Ceramic grade fluorite (85–95% CaF 2) is used in the manufacture of opalescent glass, enamels, and cooking utensils. The highest grade, "acid grade fluorite" (97% or more CaF 2 ), accounts for about 95% of fluorite consumption in the US where it is used to make hydrogen fluoride and hydrofluoric acid by reacting the fluorite with sulfuric acid .
The main uses of fluoride, in terms of volume, are in the production of cryolite, Na 3 AlF 6. It is used in aluminium smelting. Formerly, it was mined, but now it is derived from hydrogen fluoride. Fluorite is used on a large scale to separate slag in steel-making. Mined fluorite (CaF 2) is a commodity chemical used in steel-making.
It is used as a defense against herbivores by at least 40 green plants in Australia, Brazil, and Africa; [43] other biologically synthesized organofluorines include ω-fluoro fatty acids, fluoroacetone, and 2-fluorocitrate. [50] In bacteria, the enzyme adenosyl-fluoride synthase, which makes the carbon–fluorine bond, has been isolated. The ...
Plant nutrition is the study of the chemical elements and compounds necessary for plant growth and reproduction, plant metabolism and their external supply. In its absence the plant is unable to complete a normal life cycle, or that the element is part of some essential plant constituent or metabolite .
Fluorite of the acidspar grade is used directly as an additive to ceramics and enamels, glass fibers and clouded glass, and cement, as well as in the outer coating of welding rods. [5] Acidspar is primarily used for making hydrofluoric acid, which is a chemical intermediate for most fluorine-containing compounds.
Fragrance: used to add a pleasant odor to food, medicine, or other consumed or partially consumed items (such as incense, candles, or lotions) Dye: used to alter the color of food, medicine, or other consumed items Ritual: ingested or partially ingested (eg used as incense) as an important component of a cultural or religious ritual
Fluorite, the primary mineral source of fluorine, which gave the element its name, was first described in 1529; as it was added to metal ores to lower their melting points for smelting, the Latin verb fluo meaning ' to flow ' gave the mineral its name. Proposed as an element in 1810, fluorine proved difficult and dangerous to separate from its ...
According to Sun Simiao's (c. 670) Qianjin yifang (千金要方 "Supplement to the thousand Golden Remedies", the powder "contained five mineral drugs — fluorite, quartz, red bole clay, stalactite and sulfur, one animal drug, and nine plant drugs. It was claimed to be effective in curing many diseases and in increasing vitality, but was also ...