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Advantages and use of the Nielsen concentrator
First, the advantages
The Nielsen concentrator has the following advantages:
(1) The beneficiation ratio is very high, which can reach 10,000 to 30,000 times, and the concentrate yield is very small (0.003% to 0.01%).
(2) Global customer sample survey shows that the gold concentrate has a high grade with an average of 20,949 g/t. The gold recovery rate is higher than that of re-election equipment such as chutes, with an average of 31.76%.
(3) The entire sorting process is fully automated, the process is stable and reliable, and the wearing parts of the wearing parts are good, and the operating rate is as high as 97%.
(4) It is environmentally friendly without adding any chemicals.
(5) Less power consumption, less labor, lower production costs, and the return time is generally not more than half a year.
(6) The processing capacity is large, and the maximum processing capacity reaches 650t/h.
(7) The small footprint is easy to integrate into the existing concentrating plant's process.
   Second, the use occasion
The Nielsen concentrator should be included in its beneficiation process when:
(1) The sand deposit sample contains free heavy mineral particles of interest.
(2) It is found that there is visible gold in the core sample.
(3) Using metallurgical test methods to ascertain the presence of free heavy mineral particles in the ore.
(4) In the ore dressing tailings, the purpose of the monomer dissociation is observed to be heavy mineral loss.
(5) When testing the final tailings, high test values ​​occur from time to time.
(6) In the closed-circuit grinding cycle, a large number of heavy minerals are stored.
(7) When changing the grinding machine liner, cleaning the slurry tank (tank) or other mining points, it is found that there is a free target mineral.
Specific use occasions are:
(1) Recovering the mineral of interest from the sand mine.
(2) Recovering the main purpose heavy minerals from the concentrating cycle of the ore dressing mill.
(3) Recycling heavy minerals by-product from the bismuth metal grinding cycle.
(4) Recovering natural gold from flotation concentrates.
(5) Recycling of the target mineral during reprocessing of the tailings.
(6) Recycling of secondary minerals in secondary concentrate selection operations.
(7) Recycling of other large-density minerals (such as platinum , silver , mercury, etc.).
   Third, the applicable ore
There are two types of Nielsen concentrators: one is semi-continuous discharge (BKC); the other is continuous variable discharge (CVD). The former low mineral content for the purpose of a noble metal (Au, Ag, Pt, etc.) minerals, such as visible rock gold, gold and non-ferrous ores associated recovery of gold; copper concentrate by flotation recovery of gold visible; copper-nickel Recovery of platinum group elements in sulfide ore. Metal ore (wolframite, cassiterite, tantalite ore, chrome ore, titanium ore, rutile, etc.) for processing the latter purpose a relatively high mineral content, and the recovery of gold from sulphide tailings Iron removal of industrial minerals, recovery of iron alloys from slag, pre-selection of heavy ore sands and deliming.