In China, iron ore with hematite grain size of less than 0.045mm or magnetite grain size of less than 0.03mm is commonly referred to as fine-grained iron ore . Yuanjiacun Iron deposit and Qidong Iron deposit in Shanxi and Hunan Province, respectively, are the most typical fine grain iron deposits in China. The Taiyuan Iron and Steel Group and scientific research units, who aimed at the Yuanjiacun iron ore recycle and conduct a large number of experimental studies. The original iron ore grade of 31.18%, −0.045mm particle size accounted for 93.81% of the total ore, they got concentrate iron grade 66.95%, and recovery rate of 72.62%. With this process, the Yuanjiacun iron deposit built a mineral processing plant with annual capacity of 22 million tons by the end of 2012 . Changsha Institute of Mining and Metallurgy proposed a selective flocculation desliming-anti-flotation technology and developed a SA-2 flocculant (for the purpose of fine grain size, complex nature of igneous iron ore in Qidong iron deposit) . At present, the Qidong iron deposit uses this technology to build a beneficiation plant with an annual treatment capacity of 2.8 million tons. Under the conditions of a raw ore grade of 28.36% and a grinding fineness of −0.038mm (98%), the concentrate iron grade 62.5%, the recovery of 68% have been achieved [18, 19, 20]. There are many examples like this. Stage grinding—stage magnetic separation likely is the best process for processing fine-grained magnetite [21, 22]; for fine-grained magnetite-hematite mixed iron ore, weak magnetic—strong magnetic—resurfacing—reverse flotation process can obtain the high recovery rate; that sorting fine particles hematite process mainly has strong magnetic—desliming—reverse flotation [23, 24], selective flocculation—reverse flotation  and strong magnetic—centrifugal beneficiation .
Magnetic Separators. Magnetic separators from Multotec represent the leading industrial uses of magnetic forces within mineral processing applications. Our magnetic separators are designed around application specific magnetic circuits to provide wet and dry separation processing solutions Dry drum cobber magnetic separators play a vital role in enhancing the efficiency of mineral processing.
Vanadium is another element that might be recovered from coal by using reverse flotation. Coal vanadium element can be found in some coal minerals such as illite, muscovite, roscoelite, and kaolin in the form of isomorphism, whereas tantalite and garnet are appeared in the form of absorption . In addition, quartz, calcite, and carbonaceous are found to be main gangues in stone coal . For many studies, flotation has been popular topic for many years, but there are not much more available studies on pre-concentration of vanadium in low-grade coal by the method .
Fluoride flotation after vulcanization. In this method, the oxidized mineral is first vulcanized with sodium sulfide or other vulcanizing agent (such as sodium hydrosulfide), and then the higher xanthate is used as a collector for flotation. When vulcanizing, the lower the pH of the slurry, the faster the vulcanization proceeds. The vulcanizing agent such as sodium sulfide is easily oxidized and has a short action time. Therefore, when the copper oxide is floated by a vulcanization method, the vulcanizing agent is preferably added in stages. Ammonium sulfate and aluminum sulfate contribute to the vulcanization of oxidized minerals. Therefore, the addition of these two agents during the flotation flotation can significantly improve the flotation effect, the copper oxide minerals which can be treated by the vulcanization method, mainly copper carbonates, such as Malachite, azurite, etc. can also be used for flotation of copper ore. However, if the malachite is not specially treated in advance, its vulcanization effect is very poor, and it cannot even be vulcanized.
Our ball mills have been used to grind glass, powder food products, create custom varnishes, make ceramic glaze, powder various chemicals.
This equipment is used to remove iron from kaolin. After being washed and cleaned, the kaolin slurry enters LHGC2000 high gradient magnetic separator to remove the residual iron and obtain high-purity and low-iron kaolin products. The iron removal rate is above 90%.
Examples of things that might be seen under the microscope:
Image 16: Two Isospora canis (coccidia) oocysts seen at low power.
Image 17: Isospora felis oocysts seen at low power - these cysts are more pointed than the canine form of coccidia.
Image 18: Bacterial rods (indicated with white arrows) seen at 400x.
Image 19: Extreme close-up (1000x) of bacterial rods seen in a fecal
floatation sample. These may or may not be clinically significant - bacteria are
normally seen on fecal floats.
Image 20: Isospora oocyst (extreme close-up - 1000x) prior to any maturation.
Image 21: Isospora oocyst (extreme close-up - 1000x) starting to undergo maturation
to its infectious state (see coccidia page for more details on coccidiosis). See how
the organism now has two central balls of cells, instead of just the one (as seen in image 20)?
It has undergone its first lot of cell division and maturation.
Image 22: Close-up image of an Isospora felis oocyst seen in a fecal flotation. The tiny rod-shaped
lines surrounding the oocyst are bacteria. This image gives you an idea of the relative
size differences between bacterial and protozoan coccidia organisms.
NEW! - Visit our great Fecal Float Parasite Pictures Gallery!
Cool case study: Here's a cool example of how fecal flotation testing can be put to practical use:
The following eggs were discovered on a recent fecal flotation of a kitten's faeces
at our clinic.
Image 24: This is a high-power (1000x oil immersion) view of one of the eggs - a Spirometra tapeworm egg.
Image 25: This is another high-power (1000x oil immersion) image of one of the fecal float eggs - a Spirometra tapeworm egg.
The kitten was wormed with an all-wormer tablet, one that included a common tapeworming medication: Praziquantel.
Within the day, a large (60cm) Spirometra tapeworm (also commonly known as a 'zipper-worm')
was voided in the kitten's faeces.
Image 26: This is the large Spirometra tapeworm that was voided in the kitten's faeces.
Shear-induced phase transformation is observed in planetary ball mill.
The principle of gold flotation is: flotation of large-density and coarse-grained minerals often use thicker slurry; on the contrary, when flotation of small density, fine-grained and sludge, use a thinner slurry, which can ensure a higher recovery rate and improve the quality of the concentrate.
We are privileged to serve our clients for the past 25 years with A-Z of equipment relating to magnetic separation, vibration, gold processing, lab equipment etc. We owe this to our team of dedicated and qualified engineers who have constantly kept upgrading the equipment with latest technology and standards. The magnetic separator of drum type is one of the earliest machines manufactured by us and perfected with time.
Type 420 hard stainless steel is the material widely used in Europe. It is very similar to type 440C, which is more widely used in the United States. Type 420 is not quite as hard as the type 440C. One of the advantages of 420 over type 440C is that it has a higher magnetic permeability, so that it is attracted more strongly by a magnetic field.
A good choice if you don't want a noisy machine, but grind results might not meet your expectations.
Do not centrifuge, dry or freeze the magnetic beads.
People who love their gadgets and gizmos are sure to be drawn to the cool design of this model. The Zelancio Electric Salt and Pepper or Spice Grinder Set are designed to be very easy to use for ultimate convenience. Not only do these grinders look sleek and stylish, but they also promise to be very easy to use.
Table Americas Grinding Media Consumption by Application (2014-2019) (K MT)