Experimental report on the selectivity of ore in Ningshan Yuxin Molybdenum Mine
The process and condition test of the Ningshan Molybdenum Mine is carried out to solve the problem of low recovery rate of the existing molybdenum concentrate.
This test was sent to a large sample containing 0.432% molybdenum and carbon %. The test sample is a molybdenum-rich high-carbon molybdenum ore, which is also difficult to treat molybdenum ore. The reason is that when molybdenum ore is associated with graphite or “carbonaceous matter†and talc , because of their similar natural buoyancy, neutral oil can float, making molybdenum and “carbonaceous matter†or talc difficult. Separation, especially the separation of molybdenite from "carbonaceous matter" is even more difficult.
The researchers passed a large number of tests, through a variety of pharmaceutical test comparisons, combined with the on-site process and process conditions, and finally determined the use of a coarse, two sweep, nine fine process, to obtain molybdenum concentrate containing 42.47% molybdenum, molybdenum recovery 85.95%, the test achieved the intended purpose, which provided a reference for the Ningshan molybdenum mine to improve the current plant molybdenum recovery rate.
Heat Treated Steel Bar And Tube
HEAT TREATED STEEL BAR AND TUBE
Heat treated steel bar is produced by heating and cooling in different temperature based on the steel grades to improve the steel bar mechanical properties or machinability for various industrial applications. Heat treated steel bar includes annealed steel bars, Normalized Steel Bar, quenched and temper qt steel bar.
Annealed Steel Bar has better ductility and lower hardness, which can be easier to be machined. The annealing processing is usually widely used for steel grade with higher carbon content above 0.5%. However, some low carbon steel also requires to do annealing for special usage such as 20CrMnTi gear steel. For some special material such as 20CrMnTi gear steel and GCr15 such bearing steel, spheroidizing annealing is often required.
Normalized steel bar sometime is also one kind of annealing processing. It mainly changes the grain to remove the impurities in steel and improves the strength and hardness. For some hot rolled steel bars, to keep the basic mechanical properties, normalizing is often used.
Quenching and Tempering, abbreviated as Q&T is a king of processing that strengthen or harden steel bars by heating the materials and then cooling in water, oil or other liquid medium, that rapidly the change from austenite to perlite to get the proper properties for various usage. The quenched & tempered steel bar materials are usually with carbon from 0.30% - 0.60%, it is widely used as merchant bars in components of various machines.
Our advantages on producing heat treated steel bars:
1) Big stocks of hot rolled round bars or wire rods as raw materials
2) Wide range of Cold Drawn Steel Bar sizes: from 10mm to 150mm
3) Different cold drawing medias powder or oil to get different surface
4) Straightening machines to get better straightness up to 0.5mm/m
5) Grinding and polishing machines to get better roughness upto 0.4um
6) Heat treating furnaces to adjust the mechanical properties
7) Full sets of testing equipment to test the sizes, mechanical properties and microstructure.
8) Multiple packages to avoid broken packages and anti-rusty
4140 steel tube,Round Steel Tubing,Heat Treated Steel Tube,Heat Treated Steel Bar And Tube,S355JR steel tube
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