Method for preparing low-rank coal slime bipolar collecting agent through modification of hydrocarbon-type oil

Abstract

The invention discloses a method for preparing a low-rank coal slime bipolar collecting agent through modification of hydrocarbon-type oil. The bipolar collecting agent is formed through reaction of the hydrocarbon-type oil and air. The preparing process comprises the following steps that 1, the conventional hydrocarbon-type oil is fed into a low-temperature plasma reaction chamber; 2, a reactionchamber body is placed in an oscillator for 3-5 min, and medicament is evenly distributed in the reaction chamber; 3, air with the quantity of flow being 30 L / (min.m<2>) is led into a plasma reactor;4, the low-temperature plasma reactor is started to make the hydrocarbon-type oil react with the air for 5-10 min; 5, the low-temperature plasma reactor is shut down; and 6, air leading is stopped, reaction products are taken out of the reactor, and the bipolar collecting agent is prepared. The method for preparing the low-rank coal slime bipolar collecting agent through modification of the hydrocarbon-type oil has the advantages that the preparation method is simple, raw materials are easy to get, the process is efficient, and the medicament property is stable by taking chemical change as priority; and by using the collecting agent prepared through the method, the low-rank coal slime flotation clean coal productivity can be greatly improved under the same medicament dosage.

Description

technical field [0001] The invention relates to the field of coal slime flotation. Aiming at the problems that traditional hydrocarbon oil collectors have weak collection ability for low-order coal slime and low flotation yield, the invention provides a method for preparing heteropolar collector method. Background technique [0002] Low-rank coal slime is a fine-grained coal resource produced in the thermal coal separation process. The annual output is roughly estimated to be about 200 million tons at a yield of 10%. But at present, it is mainly sold or stockpiled by blending coal. At the same time, raw material lump coal for power generation and coal chemical industry must be pulverized before use. Direct use of upgraded low-rank coal slime can not only save 10% of production costs but also simplify process configuration. The development of high-efficiency upgrading methods for low-order coal slime is of great significance for improving resource utilization and reducing t...

AI Technical Summary

Problems solved by technology

However, the preparation process of compound medicaments is complicated, the types of medicaments are complex, and simple compounding is the main method. At the same time, the price of the medicaments used is relatively high, so it is necessary to further explore efficient preparation methods

Therefore, in view of the outstanding problem of weak recovery ability of conventional collectors in low-rank coal slime flotation, it is very important to develop high-efficiency and low-cost heteropolar reagents for realizing high-quality utilization of low-rank coal slime

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