For partially oxidized gold-copper ore, ore is more difficult to handle due to the inclusion of iron hydroxide and copper oxide minerals. When the flotation-cyanide combined process is adopted, since the copper oxide is difficult to float, the gold-containing iron hydroxide cannot be recovered by the flotation method, and the copper mineral has an effect on cyanidation, so the recovery effect is poor. This type of ore is best used in the combined process of metallurgy. The first stage recovers the gold-containing sulfide by flotation, the second stage changes the agent to recover the copper oxide and the gold film on the surface, and the third stage uses the acid leaching to recover the copper-containing gold-containing sulfide whose surface has been cleaned.
The gold ore processed in a gold mine in Shandong is a gold-copper mine. The main metallic minerals are: pyrite, chalcopyrite, native gold, sphalerite, galena, silver, lead ore; gangue minerals are quartz, sericite, feldspar, biotite and the like. Natural gold and silver gold ore are 30% and 67%, respectively, of gold minerals. Most of the natural gold is distributed in pyrite. The natural gold particle size is 0.01 to 0.075 mm, and the silver gold ore particle size is 0.01 to 0.053 mm. The beneficiation uses a combined flotation-separation flotation-cyanide process. The main technical and economic indicators are: tailings containing gold 0.35 g / ton, gold-copper concentrate containing gold 312.57 g / ton, tailings containing gold 0.35 g / ton, cyanide operation ore containing gold 24.45 g / ton, dipping The gold content is 1.50 g/ton, the leaching rate is 93.87%, the washing rate is 99.39%, the replacement rate is 99.56%, the total recovery of gold is 92.8%, and the treated ore is 600 tons/day.
Cobalt-based alloy powders are commonly used in plasma transfer arc welding (PTAW) due to their excellent high-temperature properties and resistance to wear and corrosion. These alloys are typically composed of cobalt as the base metal, with various alloying elements such as chromium, tungsten, nickel, and carbon added to enhance specific properties.
The use of cobalt-based alloy powders in PTAW offers several advantages, including:
1. High-temperature strength: Cobalt-based alloys exhibit excellent strength and resistance to deformation at elevated temperatures, making them suitable for welding applications that involve high heat.
2. Wear resistance: These alloys have a high hardness and resistance to wear, making them ideal for welding applications where the welded parts are subjected to abrasive or erosive conditions.
3. Corrosion resistance: Cobalt-based alloys offer good resistance to corrosion, making them suitable for welding applications in aggressive environments, such as those involving chemicals or saltwater.
4. Thermal conductivity: Cobalt-based alloys have good thermal conductivity, allowing for efficient heat transfer during welding and reducing the risk of heat-affected zone (HAZ) defects.
5. Compatibility with other materials: Cobalt-based alloys can be easily welded to a wide range of base metals, including stainless steels, nickel alloys, and other cobalt-based alloys, providing versatility in welding applications.
To use cobalt-based alloy powders for PTAW, the powder is typically fed into the plasma arc using a powder feeder. The powder is then melted by the high-temperature plasma arc and deposited onto the workpiece, forming a weld bead. The specific welding parameters, such as arc current, travel speed, and powder feed rate, will depend on the specific alloy and application requirements.
It is important to note that the selection of the cobalt-based alloy powder should be based on the specific welding application and the desired properties of the final weld. Different cobalt-based a
Co Powder,Cobalt 6 Powder,Cobalt 12 Powder,Cobalt 21 Powder
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