Device and process of using waste oil for coal flotation

Abstract

The invention discloses a device and a process of using waste oil for coal flotation. The device comprises a grease storage slot, an ore pulp pretreatment slot, a pretreatment barrel, a flotator and a filter press, wherein the grease storage slot is connected with the ore pulp pretreatment slot; the ore pulp pretreatment slot is provided with two charge holes which are separately an ore pulp charge hole and a grease charge hole; the bottom of the ore pulp pretreatment slot is connected with the pretreatment barrel; an atomizing spray nozzle is arranged at the top side of the pretreatment barrel; a collecting agent and foaming agent inlet tube arranged on the top of the atomizing spray nozzle is inserted into an ore pulp outlet; the pretreatment barrel is connected with the flotator; foam flotation is performed in the flotator; an overflow outlet of the flotator is connected with the filter press; and a bottom flow outlet of the flotator is connected with a second filter press. The device adopts waste oil such as gutter oil and hogwash oil as a medium so as to be adsorbed in a pore structure of coal to increase hydrophobic property and floatability of the coal, and therefore, the problem that the flotation process is suitable for a few coal types is solved. The device can increase a calorific value of coal, and also can reduce moisture content, so that quality improvement of coal is realized, and a coal dressing process is innovated.

Description

technical field [0001] The invention relates to a device and a process for using waste oil in coal flotation, and belongs to the technical field of waste recycling. Background technique [0002] With the improvement of people's living standards, household cooking and catering industry have developed rapidly, and a large amount of waste oil (including gutter oil, hog oil, etc.) is produced, and its safety hazards have been focused on by the society. Some waste oil is processed and refined into "edible oil" by unscrupulous traders through improper channels, and then enters the market and returns to the dining table. Due to high-temperature oxidation of animal and vegetable oils will produce highly toxic aflatoxin, benzopyrene and other carcinogens, which pose a huge threat to human health. Therefore, the comprehensive utilization of waste oil benefits people's healthy life and has important social significance. [0003] Froth flotation is currently the most widely used flota...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a device and process for using waste oil in coal flotation. Its purpose is to solve the problem of using waste oil such as waste oil and hog oil, and specifically to provide a pore structure that uses waste oil as a medium to adsorb on coal. Increase its hydrophobicity and floatability, and then solve the problem that the flotation process is suitable for less coal types

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