A device and process for using waste oil in coal flotation
A waste oil and oil technology, applied in flotation, solid separation, etc., can solve the problem of flotation process adapting to less coal types, and achieve the effects of wide application of coal types, high water content, and water content reduction
Active Publication Date: 2019-05-10
TAIYUAN UNIV OF TECH
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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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[0030] A device for coal flotation of waste oil, comprising a grease storage tank 1, a pulp pretreatment tank 3, a pretreatment cylinder 5, a flotation machine 7, and a filter press; the grease storage tank 1 is connected to the pulp pretreatment tank 3 , the pulp pretreatment tank 3 is provided with two feed ports: the pulp feed port and the grease feed port respectively, the bottom of the pulp pretreatment tank 3 is connected to the pretreatment cylinder 5, and the top side inlet end of the pretreatment cylinder 5 is provided with an atomizer Nozzle 4, the top is provided with an inlet pipe 6 inserted into the pulp outlet, the inlet pipe is the collector and foaming agent inlet pipe, the collector and foaming agent are mixed and enter from the inlet; the pretreatment cylinder 5 is connected to the flotation machine 7. Foam flotation is carried out in the flotation machine 7, the overflow outlet of the flotation machine is connected to the first filter press 8, and the underfl...
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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...
Claims
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IPC IPC(8): B03D1/02B03D1/08B03D1/14B03D103/08
CPCB03D1/025B03D1/08B03D1/14B03D2203/08
Inventor 张继龙张露雅
Owner TAIYUAN UNIV OF TECH