20 Terms
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Mineral mining
The extraction of valuable minerals or other geological materials from the earth for economic interests.
Industry: Mining
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Mineral mining
Daeves's reagent
Mining; General mining
An etchant used to distinguish carbides in chromium steels and tungstides in high-speed steels. The solution contains 20 g of potassium ferricyanide and 10 g of potassium hydroxide in 100 mL of ...
Canfield's reagent
Mining; General mining
An etchant, used for revealing phosphorus segregation in iron and steel, containing 1.5 g cupric chloride, 5 g nickel nitrate, and 6 g ferric chloride, in 12 mL hot water.
Villela's reagent
Mining; General mining
An etching reagent consisting of 95 ml of ethyl alcohol, 5 ml of hydrochloric acid, and 1 g of picric acid.
picral
Mining; General mining
An etching reagent consisting of a 2% to 5% solution of picric acid in ethyl alcohol. It may be used for plain carbon and low-alloy steels.
Heyn's reagent
Mining; General mining
An etching reagent containing 10% copper ammonium chloride in water.
Murakami's reagent
Mining; General mining
An etching reagent developed for use in the investigation of the structure of iron-carbonchromium alloys. It consists of a solution of 10 g potassium ferricyanide, 10 g potassium hydroxide, and 100 ...
Bolton's reagent
Mining; General mining
An etching reagent for cast iron that contains picric acid, nitric acid, and water. (Osborne, 1956)
