Automatic analysis and flotation separation of gangue minerals in refractory coal slime
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Abstract
A coal preparation plant in Taiyuan city used kerosene oil as collector to separate refractory coking coal slime.Due to the complex structure of the coal gangue and the poor pertinence of kerosene oil, the floatation recovery rate was only about 65%.In this paper, the mineral composition and structure of the refractory slime gangue are analyzed by using the automatic mineral characterization system (AMCS), and a new targeted collector was developed using vegetable oil and hydrocarbon oil.The laboratory floatation recovery rate reached 88.7%, and the industrial application reached 78%, which solved the low flotation recovery rate and the flammable and explosive of kerosene oil.Otherwise, the new collector has a wide sources, low prices, and renewable.It is a great significance for the domestic coal slime flotation plant.
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