Industrialization development of flotation of medium grade phosphate rock in Haikou, Yunnan

Yunnan Phosphorus rich mineral resources, but more than 90% of the refractory low-grade phosphate rock, mined in accordance with the current rate of more than ten million tons a year, grade â…  product bonanza will last less than 10 years of mining, high-grade ore resources crisis has Obviously, especially with the start-up construction of the Yunnan National Phosphate Compound Fertilizer Base, the demand for high-quality phosphate rock will increase rapidly, the consumption rate of high-quality rich ore will continue to accelerate, and the resource situation will be more severe. The development and utilization of low-grade phosphorus in Yunnan Mine resources are imminent and imperative.

Yunnan has hundreds of millions of tons of low-grade phosphate resources that need to be developed and utilized. With the goal of realizing the development and utilization of low-grade phosphate rock flotation, it is the first to carry out research on flotation industrialization development of low-grade phosphate rock in Haikou, Yunnan, and provide technology for industrialized development and effective utilization of low-grade phosphate rock flotation in Yunnan. Supporting and guiding, promoting the effective integration and sustainable development of phosphate resources in Yunnan Province, and improving the comprehensive utilization and benefits of resources have important strategic and practical significance.

This paper analyzes and summarizes the ore properties and process mineralogical characteristics of the Haikou medium grade phosphate rock, and studies and verifies the process flow and the selection and application of the chemical agent. The positive-reverse flotation process and the new high-efficiency flotation reagent are used in Haikou. The grade silicon-calcium phosphate rock is tested and developed in three stages: laboratory test, tonnage expansion continuous test and industrial test. The small test development has obtained P_2O_531.05% concentrate, MgO 0.45%, and concentrate yield 72.04%. The recovery rate is 88.23%; the expansion and development yields the concentrate grade P_2O_5 31.84%, MgO 0.48%, SiO_214.65%, concentrate yield 69.83%, concentrate recovery rate 88.54%: industrial test development to obtain concentrate grade P_2O_532.47% , MgO 0.88%, SiO_211.77%, concentrate yield 61.02%, concentrate recovery rate 81.06%.

After simple treatment, the flotation tailings water can be returned to the grinding classification and flotation. The concentrate water can be returned to the reverse flotation without treatment, and has no effect on the flotation process and indicators. The recovery of water is high, and the ore dressing wastewater is closed. The cycle is not vented, and zero emissions can be achieved. The success of industrialization development proves that under the current technical and economic conditions, Haikou's medium-grade phosphate rock can fully realize large-scale development and utilization.

This industrialization research has found important factors affecting the flotation of colloidal phosphate rock, such as temperature, chemical system and flotation equipment , and proposed appropriate control adjustment methods, which provide important guidance for future industrial production to improve mineral processing technical indicators; The recovery rate and the original ore grade were analyzed by regression analysis, and the relationship of concentrate recovery rate model was obtained. The relationship between the grade of enrichment of flotation concentrate of silicic calcium phosphate rock was summarized, and the selection of process flow and prediction of concentrate grade were obtained. It has important guiding role; the technical achievements obtained are the construction of large-scale flotation plant in Haikou, providing engineering design basis for large-scale development and utilization of medium-grade phosphate rock resources, providing experience accumulation and technical support for industrial production in the future, and being the medium-low grade phosphorus in Yunnan. The industrialization of mineral resources has played a leading and demonstrative role.

Blended Powder

A blended powder of tungsten carbide and Metal Alloy Powder can be used for laser cladding, a process used to deposit a layer of material onto a substrate using a laser beam. This blended powder is typically used as a feedstock material for laser cladding applications where high wear resistance and hardness are required.

Tungsten carbide is a hard and wear-resistant material that is commonly used in cutting tools, mining equipment, and other high-wear applications. It has excellent thermal conductivity and high melting point, making it suitable for laser cladding processes.

Metal alloy powders, on the other hand, are often added to the Tungsten Carbide Powder to enhance certain properties or tailor the characteristics of the final cladding layer. These metal alloys can include nickel, cobalt, chromium, or other elements, depending on the specific requirements of the application.

The blended powder is typically prepared by mixing the tungsten carbide and metal alloy powders in the desired ratio. This mixture is then fed into a laser cladding system, where it is melted using a high-power laser beam. The molten powder is rapidly solidified onto the substrate, forming a dense and wear-resistant cladding layer.

The resulting cladding layer can have excellent hardness, wear resistance, and thermal conductivity, making it suitable for various applications such as tooling, wear parts, and surface protection. The specific properties of the cladding layer can be adjusted by varying the composition and ratio of the tungsten carbide and metal alloy powders in the blend.

Overall, the blended powder of tungsten carbide and metal alloy powder offers a versatile and customizable solution for laser cladding applications, providing enhanced wear resistance, hardness, and other desired properties to the final cladding layer.

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