Testing method for bubble-particle adhesion collision behavior in coal slime flotation

Abstract

The invention discloses a testing method for bubble-particle adhesion collision behavior in coal slime flotation. The testing method comprises the steps that the using amount of an additive collecting agent kerosene and the using amount of a foaming agent sec-octyl alcohol are selected, and a floatation speed test is conducted on a coal slime sample; a test result is processed through calculation, the actual content of inorganic minerals and the content of clean coal in clean coal products of all stages of flotation are obtained, and then the bubble-coal particle effective adhesion probability is obtained through further calculation according to a bubble-coal particle effective adhesion probability formula; fitting analysis is conducted on the bubble-coal particle flotation cumulative recovery rate by adopting Origin software through a first-stage clean coal flotation kinetic equation and a second-stage clean coal flotation kinetic equation, and a bubble-particle effective collision rate coefficient is finally obtained through calculation to measure the floatation effect. Therefore, the purposes of further increasing the clean coal production rate and providing guidance for grades in the actual flotation production process are achieved.

Description

technical field [0001] The invention relates to a test method for the adhesion and collision of air bubble particles in coal slime flotation, in particular to a method for measuring the effective adhesion probability and effective collision rate coefficient of air bubbles and coal particles in the coal slime flotation process. Background technique [0002] Flotation is a technical method for separating useful minerals from ores according to the different physical and chemical properties of the surface of mineral particles. It is widely used in the separation of fine-grained and ultra-fine-grained materials. At present, flotation is the most effective method for fine-grained coal slime separation. method, with the continuous and in-depth improvement of the level of coal mining machinery, the proportion of coal slime in mining raw coal is gradually increasing, which seriously affects the normal operation of coal production and the output and quality of coal products, and the so...

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Problems solved by technology

[0003] The composition of coal, the properties of coal slurry, the chemical system, the flotation environment, and the process flow are all important factors affecting the separation efficiency of coal slime flotation. This is the reason for the complexity of the flotation process. Under the domination of factors, the flotation process changes over time. In order to deeply reveal the essence of the flotation process and scientifically manage the process, it is of great significance to study the flotation dynamics and its mathematical model. For this reason, many scholars have conducted research on the flotation process. A large number of theoretical studies, due to the complexity of flotation, these theories often have insufficient use, it is difficult to directly apply and regulate actual production, and lack certain field practicability

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