Description
How to get tungsten concentrate*-tungsten beneficiation
method*-tungsten enrichment machine
As kind of common metal, tungsten is usually mixed in kinds of
rocks with its low content, and it can be smelted after
beneficiation. There is wolframites and Scheelite and at this
moment, wolframites has been in dominating place to explore,
occupying over *0%. For tungsten enrichment, hand separation, heavy
medium separation, gravity separation, floatation separation,
magnetic separation and electrical separation has been
involved.Â
For wolframite tungsten ore, it has characteristics of low content,
low grade, coarse granule inlay, big density, low hardness, easy
argillization, and dark color. Its beneficiation is mainly gravity
separation. The density difference between wolframites and
impurities is big and gravity separation can be adopted. But the
wolframites granules shall be liberated from the impurities. So the
promary situation is to observe the crystal granule size of
wolframites. If the wolframites inlay is corse or it is lumpy
wolframites, coarse mineral jig separator can be used directly to
gain high grade tungsten ore. The equipment involved cover crusher,
rod mill, jig concentrator. If it is fine granules inlay or
wolframites mud, shaking table or centrifugal separator can be
used.
But for scheelite tungsten ore, it is usually mixed with sulfide,
mainly molybdenite, and the beneficiation for scheelite is
floatation separation. In alkaline medium, The PH is ***0.5 by
sodium carbonate and sodium hydroxide. The main inhibitor is sodium
silicate, quebracho sap, tannin, and kinds phosphate while the main
collectors are oleic acid, sodium oleate, tall oil, paraffin soap
oxide. These collectors owns foaming nature, so there is no need of
foaming agent here. In order to improve the floatation efficiency
of scheelite ore, polyvalent metalsalts can be added to the solium
silicate while pulp temprature shall be up to ****0 celsius
degree.Â
The standard to judge whether gravity separation can be used for
tungsten ore is whether density difference and embedded size of
concentrate blocks is in the handling scope, but not the ore grade
in the raw ore or slag.
The density difference is big enough for gravity separation.
however, granule liberation of useful material and gangue is also
needed as well. So if the liberation size is coarse or ok to
gravity separation, gravity separation can do the separatign job
well.
Different models can be used for tungsten of different size
embedded. Coarse granules embedded tungsten can be beneficiated by
coarse jigger like models of AM*0, 2LTC**2 models while fine
jiggers of JT***0/2 and LTA***0/2, 2LTC***9/8T can be used when it
comes to the ore with fine size embedded. Foe the ore very fine,
shaking table or pan-magnetic separator can be used for the
separation.
