Phosphorus ore mining method: China's phosphate rock mining underground and open-pit mining is divided into two categories. At present, the amount of ore mined in China is about 60% of the total amount of phosphate mining. The mining methods are mainly the open field method and the caving method. The room-column method and the sub-leveling method are the main methods. The open-pit mining in China accounts for about 40% of the total amount of phosphate mining. The representative large and medium-sized mines are Yunnan Phosphate Chemical Industry (Group) Co., Ltd. Jinning Phosphate Mine, Hubei Huangmailing Phosphorus Chemical Group Co., Ltd., Guizhou Yufu Mineral Fertilizer The group company and the Dajingkou Phosphorus Mine in Jingjing, Hubei, etc., are mostly open-pit mines in the hillside, and the single automobile road development and transportation system accounts for the vast majority.
Oxide powder for thermal spray refers to a type of powder material that is used in thermal spray processes. Thermal spray is a coating technique where a material in powder form is heated and propelled onto a substrate, forming a coating.
Oxide powders are commonly used in thermal spray applications due to their high melting points, excellent wear resistance, and thermal insulation properties. They can be used to create protective coatings on various surfaces, such as metals, ceramics, and plastics.
Some common types of oxide powders used in thermal spray include:
1. Aluminum oxide (Al2O3): This oxide powder is widely used for its high hardness, wear resistance, and thermal insulation properties. It is commonly used for coating applications in industries such as aerospace, automotive, and electronics.
2. Zirconium oxide (ZrO2): Zirconium oxide powder is known for its high melting point and excellent thermal barrier properties. It is often used in thermal spray coatings for gas turbine engine components, where thermal insulation is critical.
3. Chromium oxide (Cr2O3): Chromium oxide powder is used for its high hardness, corrosion resistance, and wear resistance. It is commonly used in applications where high temperature and abrasive wear resistance are required.
4. Titanium oxide (TiO2): Titanium oxide powder is known for its high refractive index and excellent UV resistance. It is often used in thermal spray coatings for optical and decorative applications.
These oxide powders can be applied using various thermal spray techniques, such as flame spraying, plasma spraying, or high-velocity oxy-fuel (HVOF) spraying. The choice of oxide powder and thermal spray technique depends on the specific application requirements and desired coating properties.
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