| 摘要 |
<p>A processing technique of pulverized lignite comprises the following steps: 1) heating pulverized lignite to 100°C-1000°C, and keeping the temperature for 1h~5h; 2) cooling the lignite obtained in Step 1) to be below 100°C; 3) adding a binder, mixing evenly, and forming; 4) heating the formed lignite to 100°C~1000°C, and keeping the temperature for 1h~5h.For the final product obtained through the processing technique of pulverized lignite according to the present invention, the low calorific value is greatly increased when compared with that of raw coal, and is increased to be more than 2 times as that of the raw coal not modified. Dehydration is almost completely performed, the volatile matter is dramatically reduced, the content of fixed carbon is increased dramatically, and the yield of condensed water is high. Compared with the prior art, the processing technique of the present invention has lower cost, and obtains the product not only easy to transport but also having the high calorific value.</p> |
