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.

PHE Spare Gasket For Tranter And Swep

Tranter And Swep Heat Exchanger,Eplacement Tranter And Swep Gaskets,Tranter And Swep Phe Gasket,Phe Gasket For Tranter And Swep

Dongguan Runfengda F&M Co., Ltd , https://www.nbrfdphe.com