kiln

thumb|250px|Charcoal kiln in California thumb|250px|Indian brick kiln thumb|250px|Hops kiln thumb|250px|Farnham Pottery, [[Wrecclesham, Surrey with the preserved bottle kiln on the right of photo]] thumb|250px|A modern tunnel kiln thumb|right|250px|Fired ware on a kiln car exiting an intermittent kiln

A kiln is a thermally insulated chamber, a type of oven, that produces temperatures sufficient to complete some process, such as hardening, drying, or chemical changes. Kilns have been used for millennia to turn objects made from clay into pottery, tiles and bricks. Various industries use rotary kilns for pyroprocessing (to calcinate ores, such as limestone to lime for cement) and to transform many other materials.