Characteristics of rare metal ore dressing process is mainly:
(1) the broken - jump Da and grinding - table two, don't adapt to the ore property and the characteristics of uneven coarse grained disseminated. Crushing principle is adopted in the process of crushing equipment (to roll mill and rod mill), avoid NiHua. In roughing hand to choose, photoelectric, heavy piece of table, cast a large amount of tailings in time, to avoid the unnecessary broken grinding and circulation, reduce the loss of metal.
(2) strengthen the jump Da, receive more early. The triple jump Da, recycling coarse monomer wolframite and rich even had body; Primary period of about 43 jump Da early recovery of metal; Rod mill after the jump jump Da after Da and shaking table, make up the table the defect of coarse grain is bad, make coarse monomer tungsten and rich even had got as far as possible recovery.
(3) strengthen the classification, mud separation. To reduce the interference of mud and sand, give full play to all levels of granularity re-election equipment efficiency. Used on the slurry treatment thickener slimer - centrifugal separator - inclined thick box - belt chute consisting of devices such as cash process, make the slime and operation recovery of 76% ~ 76%, roughing and choose two paragraphs total recovery rate of 91% or more.
In tungsten fine mud treatment in our country, a lot of progress. Use of pendulum chute in some tungsten materials processing 30 microns higher separation efficiency. Wet strong magnetic - flotation process to replace the float process, are part of fine mud recovery rate increased significantly.
In the seventy s in China since a large number of studies of wolframite flotation, especially using benzyl arsonic acid, toluene arsonic acid new medicament treatment such as tungsten fine mud, obtain good indicators.
Foreign mountain of scheelite is more, mature process is flotation - suiyeh. The method most suitable for the fine grained disseminated, calcite, fluorite, apatite and high calcium minerals is difficult to choose scheelite.
