A Parameter Analysis Method Using Microwave Assisted Grinding Boronite

Abstract

The invention relates to a parameter analysis method of paigeite ground by adopting a microwave assisted method and belongs to the technical field of mineral processing. The parameter analysis method comprises the following steps: (1) carrying out microwave roasting on paigeite in a microwave oven, ensuring that the microwave power is 1500-2500 W, heating to be 450-650 DEG C and ensuring that the feeding quantity is 50-250 g; (2) grinding the paigeite treated by microwaves for 5-6 minutes and screening parts of which the grain sizes are less than or equal to 75 [mu]m; (3) optimizing the ball-milling process of the paigeite by adopting the central composite design of a response surface method, wherein the selected influence factors are microwave power X1 of which the unit is W, microwave roasting temperature X2 of which the unit is DEG C and feeding quantity X3 of which the unit is g, and a response value Y which is set to be the yield percentage of grains with the grain size of less than or equal to 75 [mu]m; (4) analyzing the influence of the selected experimental factors on the grinding efficiency of the paigeite through Design-Expert experimental design optimization software so as to obtain significant factors and optimal technological conditions capable of influencing the paigeite grinding efficiency.

Description

technical field [0001] The invention belongs to the technical field of mineral processing, and in particular relates to a parameter analysis method using microwave-assisted grinding of boronite. Background technique [0002] my country is a country rich in boron ore resources in the world. Among them, the boron-iron ore reserves in Liaodong area reach 280 million tons, accounting for 57.88% of my country's boron ore resources. The structure is complex and diverse, and there are many multi-element symbiotic minerals. There are more than 30 types of minerals that have been identified, which are typical low-grade refractory composite ores. This makes boronite valuable minerals and It is difficult to fully and effectively dissociate gangue minerals, and it is difficult to separate them by simple mechanical grinding methods. It is necessary to improve the existing grinding technology and improve the resource utilization rate of boronite, which can not only meet the needs of chemica...

AI Technical Summary

Problems solved by technology

[0003] In the traditional operation, the crushing and grinding process has a large investment and high energy consumption. In the concentrator, the investment in crushing and grinding accounts for more than 60% of the whole plant, the power consumption accounts for 50-60% of the beneficiation, and the production and operation costs also account for more than 40% of the whole plant; There are billions of tons of mineral materials that need to be crushed every year in the country, and more than 5% of the country's annual power generation is consumed in grinding, and about one million tons of steel are consumed in grinding; the energy in the grinding process is mainly dissipated in heat, Sound, friction, etc., the energy actually used for crushing to break the bond between mineral particles and generate a new surface only accounts for 1%, and the energy utilization rate is very low.

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