On the status and the type of rock gold mining deposits in the domestic mine production using this technology point of view, flotation - concentrate typical of cyanidation process is mainly used for simple gold minerals gold-bearing quartz vein type gold-bearing sulfide ores and erosion Variable rock type ore. These two types of ore represent the vast majority of the gold industry. The typical representatives are the Linglong and Xincheng gold mines. The chemical element composition of the gold concentrate is shown in Table 1 and Table 2, respectively. Table 1 Chemical element content of flotation concentrate in Linglong gold mine element Au(g/t) Ag(g/t) Cu Pb Zn content(%) 90.0 53.0 0.83 0.29 0.31 element Fe S As P Hg content(%) 27.80 31.60 0.02 0.03 <0.001 element Au(g/t) Ag(g/t) Cu Pb Zn S Fe content(%) 82.50 121.0 0.37 0.90 0.21 43.72 43.15 Also. Xiaoqinling area of gold mines such as Henan WENYU Qinling, Dongchuang like gold, containing multi-metal mining quartz vein-type deposits, gold, silver flotation concentrate rich in sulfur and other elements Fe Zn Pb, difficult to directly cyanide, The copper and lead must be recovered after calcination to remove copper and then cyanide to extract gold and silver. However, with social development and technological progress, the number of hundreds of tons of metal content of arsenic deposits, with the diversification and pre-engineering technology, but also production of gold flotation concentrate, since the late 1990s have After the birth of the bacterial oxidation of intellectual property in China - the cyanide carbon slurry process gold demonstration plant, this kind of gold concentrate has become a sought-after raw material. Data 2 describes the classification of pretreatment methods for refractory gold ore and gold concentrates. See Table 3. Table 3 Refractory gold ore and gold concentrate pretreatment method Pretreatment method Scope of application Bake and enrich Calcination oxidation Pressurized oxidation Biological oxidation Carbon immersion Ultrafine grinding Gold concentrate Sulfide-coated gold or carbon gold ore, gold concentrate Sulfide, antimony compounds wrapped gold ore, gold ore, this method can not be oxidized ores organic carbon The raw ore and gold concentrate of sulphide-coated gold can be stirred or heap leached. Can overcome medium carbon gold Finely wrapped gold ore and gold concentrate Tungsten carbide thermal spray powder is a type of powder material that is used in thermal spray processes. It is composed of tungsten carbide particles, which are combined with a binder material to form a powder. Tungsten Carbides,Tungsten Carbide Powder,Tungsten Carbide Coating,HVOF Tungsten Carbide Coating Luoyang Golden Egret Geotools Co., Ltd , https://www.xtchvof.com
Table 2 Multi-element analysis results of cyanide ore from Xincheng Gold Mine
Some flotation gold concentrate containing high copper mine, or (as Inner clear water, Guangdong Gaoyao Hetai Gold, etc.), or with a higher silver (such as Zhejiang Suichang gold), or with a high lead ( For example, the Sanshandao Gold Mine in Shandong Province, although the cyanidation technology used in it is also a conventional cyanidation, it is necessary to adopt some special techniques or add some kind of passivating agent to make the process smooth and the index improved.
Thermal spraying is a coating process that involves heating the powder material to a molten or semi-molten state and then spraying it onto a surface to create a protective or functional coating. Tungsten carbide thermal spray powder is known for its hardness, wear resistance, and high melting point, making it suitable for applications where extreme wear or high temperatures are present.
The tungsten carbide particles in the powder provide the coating with excellent wear resistance, while the binder material helps to bind the particles together and adhere them to the surface. The powder can be sprayed using various thermal spray techniques, such as flame spraying, plasma spraying, or high-velocity oxy-fuel spraying.
Tungsten carbide thermal spray coatings are commonly used in industries such as aerospace, automotive, oil and gas, and mining, where components are exposed to harsh environments or abrasive conditions. These coatings can provide protection against wear, erosion, corrosion, and high temperatures, extending the lifespan of the coated components.