xenon is obtained commercially as a by-product of the separation of air into oxygen and nitrogen. after this separation, generally performed by fractional distillation in a double-column plant, the liquid oxygen produced will contain small quantities of krypton and xenon.
sand used for mining typically had anywhere from 19% magnetite to as low as 2%. the ironsand typically had to be separated from the sand mixture. because the magnetite is usually heavier than quartz, feldspar or other minerals, separation was usually done by washing it in sluice boxes a method similar to gold panning but on a larger scale .
charles frederick courtney – c. 25 september 1941 was an english metallurgist, manager of the sulphide corporation, a mining and chemical manufacturing company in australia. courtney was trained as a civil engineer in england, and was employed with the fairbairn engineering co. perhaps william fairbairn & sons
almonty industries is a global mining company focused on tungsten mining and exploration. its primary operations are in spain, portugal, and south korea. the company is listed on the toronto stock exchange history. the name almonty industries derives from the names of the fathers of two of the founders as a tribute to them. 'al' comes from .
because of the magnetic properties of the ore in jayville, new technologies were used, most notably the magnetic separation of iron ore. in 1895 the ball-norton electro-magnetic separator was used in a number of plants built and experiments made for magnetic separation, notably those at benson mines in st. lawrence county, new york; at the jayville mine and at the mineville in essex county.
magnetic separation is a process in which magnetically susceptible material is extracted from a mixture using a magnetic force. this separation technique can be useful in mining iron as it is attracted to a magnet. in mines where wolframite was mixed with cassiterite, such as south crofty and east pool mine in cornwall or with bismuth such as .
monazite is a reddish-brown phosphate mineral containing rare-earth metals. to be more specific, it represents a group of minerals. the most common species of the group is monazite- ce , that is, the cerium-dominant member of the group. it occurs usually in small isolated crystals.