Weathering steel, i.e. atmospheric corrosion-resistant steel(Corten Steel), is a series of low-alloy steel between ordinary steel and stainless steel. Weathering steel is made of ordinary carbon steel with a small amount of corrosion-resistant elements such as copper and nickel. It has the characteristics of toughness, plasticity, forming, welding and cutting, abrasion, high temperature and fatigue resistance of high-quality steel. The weathering resistance is 2-8 times of ordinary carbon steel and the coating performance is 1.5-10 times of ordinary carbon steel. At the same time, it has the characteristics of rust resistance, corrosion resistance, life extension, thinning and consumption reduction, labor saving and energy saving. Weathering steel is mainly used in railway, vehicle, bridge, tower, photovoltaic, high-speed engineering and other steel structures exposed to the atmosphere for a long time. It is used to manufacture containers, railway vehicles, oil derricks, seaport buildings, oil production platforms and containers containing hydrogen sulfide corrosive medium in chemical and petroleum equipme.
Weathering Steel/ Corton Steel is refers to the low alloy structural steel with corrosion protection layer, which can be used to manufacture steel structures such as vehicles, Bridges, towers and containers.
Compared with ordinary carbon steel, weathering steel has better corrosion resistance in atmosphere.
Compared with stainless steel, weathering steel only trace alloy elements, so the price is relatively low.
Weathering steel is mainly used in railway, vehicle, bridge, tower, photovoltaic, high-speed engineering and other long-term exposure to the atmosphere of steel structure, manufacturing containers, railway vehicles, oil derricks, harbor buildings, oil production platforms and containers containing hydrogen sulfide corrosive medium in chemical and petroleum equipment.
Weather Resistant Steel Plate,Corten-A Steel Plate,S355J2W Steel Plate,A588 Steel Plate Shandong Guanzhou Iron and Steel Group Co., Ltd , https://www.shansteelsupply.com
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.