Method for coking tar residue in coal blending manner

Abstract

The invention relates to a method for coking tar residue in a coal blending manner. According to the technical scheme, the method comprises the steps of selecting a coal blending ratio, carrying out the coking experiment for blending the tar residue by utilizing a 20kg small coke oven and analyzing the quality of coke. The raw material consists of gas coal, fat coal, coking coal, 1 / 3 coke coal, lean coal and tar residue, wherein the gas coal accounts for 35 to 40 percent by mass, the fat coal accounts for 15 percent by weight, the coking coal accounts for 10 to 20 percent by weight, the 1 / 3 coke coal accounts for 19 to 25 percent by weight, the lean coal accounts for 10 percent by weight, the tar residue accounts for 3 to 6 percent by weight, and the tar residue is firstly independently crushed and then blended with the raw material to be coked. The method is used for coking the coal, so that not only is the environmental pollution problem caused by the tar of a coking plant be solved, but also the coal source is saved, the secondary utilization of the energy is realized; and moreover, by adding the tar residue, the lump coke rate of the coke can be obviously increased, and a novel way for reducing the cost and improving the efficiency can be provided for the coking plant.

Description

technical field [0001] The invention relates to a milling cutter used in mechanical processing, in particular to an elastic milling cutter. Background technique [0002] In the machining process, milling can obtain planes, mesa, grooves, etc., and the methods and tools used are different according to the structure of the workpiece. However, these knives have one thing in common, that is, the shank is rigid. During the cutting process, the high-speed rotating rigid workpiece and the rigid tool directly cut into it, which will generate a large force in an instant, causing the workpiece and the turning tool to vibrate, and the phenomenon of "knife sticking" will also occur when processing threads and worms. In order to overcome this phenomenon, the prior art adopts various improvement measures in the process, such as using a steady rest to enhance the strength of the workpiece, increasing the size of the tool holder, and choosing a reasonable cutting depth. However, the above...

AI Technical Summary

Problems solved by technology

However, the above-mentioned methods can only alleviate the phenomenon of "knives" but cannot fundamentally eliminate this phenomenon. Especially when processing threads and worms with large leads, the phenomenon of "sharps" has been difficult to overcome, which directly affects the processing progress and products. quality

Images